scholarly journals Dependence of productive longevity of cows on their index of origin

2017 ◽  
Vol 19 (79) ◽  
Author(s):  
Y. V. Poslavska ◽  
Y. I. Fedorovych ◽  
P. V. Bodnar
Keyword(s):  
Life Expectancy ◽  
Time Use ◽  
Milk Fat ◽  
Correlation Coefficients ◽  
Life Time ◽  
Dispersion Analysis ◽  
Average Lifetime ◽  
Average Value ◽  
Probable Effect ◽  
Economic Use

The data on the duration and effectiveness of lifetime use of Ukrainian Black-Spotted breeds of dairy cows and their influence on these indices of the index of origin are given. The research was conducted at the Ltd «Milk Rivers» in the Sokalj district, Lviv region. Retrospective analysis of productive longevity of cows was carried out on materials of zootechnical records. The index of the origin of cows was defined as the average value for the best lactation of their female ancestors (mothers, mothers of mothers and parents' mothers). It was established that cows with different index of origin differed in duration and efficiency of life-long use. The longest life expectancy, productive use and lactation, the highest life expectancy, the lifetime of milk fat, the greater number of lactation per life and the coefficient of economic use were animals with an index of origin of up to 4500 kg of milk, and the average lifetime fat in milk- individuals who have these indices were in the range 5500–6000 kg of milk. Better for milk yield for one day of life, productive use and lactation and the amount of milk fat for one day of life and productive use were cows with an index of origin of over 7000 kg of milk, and in the amount of milk fat for one day of lactation – individuals with a magnitude of this index of 6500–7000 kg of milk. Of particular interest for breeding of dairy cattle is the clarification of the links between the indicators of the duration and effectiveness of life-time use of cows with the milk productivity of their female ancestors, in particular with an index of origin. The correlation coefficients between the investigated indicators ranged from low negative (-0.003) to moderate positive values (+0.279). By the level of connection, the greatest predicted value was yields and the amount of milk fat for one day of life, productive use and lactation. One-factor dispersion analysis has established a different degree of influence of the index of origin of cows on the indicators of their productive longevity. The lowest influence of this indicator was observed on life expectancy, productive use and lactation, life expectancy, average lifetime fat content in milk and the lifetime of milk fat, yields and the amount of milk fat per day of life, the number of lactation per life and the coefficient of economic use of cows. At the same time, it should be noted that this influence on the average lifetime content of fat in milk, yields and the amount of milk fat per day of life was reliable (P < 0.05–0.01). The highest and most probable effect of the index of origin was on yields and the amount of milk fat per day of productive use and lactation (ηx2=23.41–30.17%).

scholarly journals Duration and effectiveness of lifelong use of cows according to their milk yield for first and better lactation

2017 ◽  
Vol 19 (74) ◽  
Author(s):  
Y. V. Poslavska ◽  
Y. I. Fedorovych ◽  
P. V. Bodnar
Keyword(s):  
Life Expectancy ◽  
Correlation Analysis ◽  
Milk Yield ◽  
Milk Fat ◽  
Correlation Coefficients ◽  
Fat Content ◽  
The Impact ◽  
Economic Use ◽  
Dairy Breed ◽  
Different Levels

The aim of research was to study the duration the effectiveness and lifelong use of Ukrainian Black-Spotted dairy breed cows and the impact on these indicators of milk yield for the first and best of lactation. Research was carried out in Ltd. «Milk River» Sokal district, Lviv region. It is established, that the highly indices of life expectancy, productive use, lactation, number of lactations for life and the coefficient of economic use there were cows, milk yield for the first lactation of which was 3501–4000, for the best – 5001–5500 kg, but for the lifelong yields and the amount of milk fat – with the milk yield for the first lactation 4001–4500,  for better – more than 6000 kg. Better by yields and the number of butterfat on one day of life, productive use and lactation were cows with milk yield for the first lactation of over 5500 kg, and for better – more than 6000 kg. Thanks to the correlation analysis is set different levels and the direction of indicators duration communication and the efficiency and lifetime use of experimental cows with their milk yield for the first lactation. The highest positive and significant correlation coefficients have been established between the animals yields for the first lactation and their yields (0.426–0.812) and the amount of milk  fat  (0.445–0.811) for a day of life, productive use and lactation. Negative, but probable links were between milk yield of cows for the first lactation and the duration of their life, productive use, lactation, number of lactations in life, the coefficient economic use. The greatest influence of cows yield for the first lactation had their yield and the amount of milk fat for a day of productive use (61.89 and 62.47% respectively) and lactation (54.97 and 56.44%) and the lowest – in a lifelong yield (2.01%) and the lifelong number of milk fat (1.97%). The largest predicted value had the links between the yields for the best lactation of cows and their lifelong milk yield, lifelong number of milk fat, yields and the amount of milk fat for a day of life and productive use and lactation. These links in all cases were close, highly reliable and were in the range 0.598–0.911. The lowest correlation coefficient, in addition improbable and negative, was observed between milk yield of cows for the best lactation and average fat content in milk for all lactation (-0.008). Significant influence of better lactation on the above mentioned indicators are confirmed by our calculation the indicators of influence power, which ranged from 39.53 to 77.68%. The lowest power of influence of this factor was observed in the average fat content in milk for all investigated lactation (1.02%).

THE FORMATION OF FACTORY FAMILIES OF UKRAINIAN BROWN DAIRY BREED

2017 ◽  
Vol 54 ◽  
pp. 106-112
Author(s):  
Y. I. Sklyarenko ◽  
T. O. Chernyavska ◽  
L. V. Bondarchuk ◽  
I. P. Ivankova
Keyword(s):  
Milk Production ◽  
Milk Yield ◽  
Milk Fat ◽  
Statistical Processing ◽  
State Enterprise ◽  
Average Lifetime ◽  
Milk Productivity ◽  
Average Value ◽  
Economic Use ◽  
Dairy Breed

The aim of the research was to study milk production of many factory families of Ukrainian Brown dairy breed and study the influence of origin on the indices of milk yield, duration and effectiveness of lifetime use of cows. Method. For research allocated 9 factory families of Ukrainian Brown dairy breed of State Enterprise «Experimental Farm of Institute of Agriculture of Northern East of NAAS» (Valuty 413, Voli 8369, Laymy 8221, Miry 7209, Ryabuhy 9728, Sujety 6091, Tochky 8169, Chubarochky 7743, Shchepky 4344). Among the indicators of the duration and effectiveness of lifetime use of cows was determined the duration (days) of life, economic use of and of lactation, number of lactations for life, lifetime milk yield and yield of milk fat (kg) average lifetime content (%) fat in milk, milk yield (kg) per day of life, economic use and lactation. The coefficient of economic use was calculated (expression in percent) by the proposed method by Pelehaty M. S. et al. In addition were determined (also in percentage) coefficient of lactation and the coefficient of productive use offered by Polupan Y. P. Milk productivity of the animals was evaluated according to the materials of the primary zoo-technical account. Statistical processing of results of studies was conducted by methods of mathematical statistics using the PC. The results of the research. By analyzing the productivity of cows managed to identify a significant level of specificity and differentiation of families according to the indications. Of the 90 cows accounted for the highest productivity of lactation, 28, or 31%, had hopes of 5.0 thousand kg and above. Most of these cows had family, Miry 7209 (67%), Ryabuhy 9728 (57%), Valuty 413 (55%), Shchepky 4344 (50%), less-Sujety 6091 (36%), Chubarochky 7743 (33%), Tochky 8169 (25%), Laymy 8221 (16%), Voli 8369 (10%). Over a long period of economic use and lactation of animals of Valuty 413 family resulted higher in comparison with other families a lifelong yield. The influence of the origin of cows on the indices of milk productivity and effectiveness for lifelong use was discovered. The origin of the family significantly influenced on milk yield for better lactation and milk yield per 1 day of life. Other indicators were not significant according to the origin, although they had high values (from 5.4 to 26.7%). So we can consider it expedient to work with families to improve the duration and effectiveness of lifetime use of cows. Conclusions. The highest average yield for the first lactation animals is characterized by animals of Ryabuhy 9728 family, the content of fat in milk – by animals of Voli 8369 family. Long average duration and a better efficiency is in the life of the cows of Valuty 413 family. The highest average milk yield in one day life had animals of Valuty 413 family. Animals of Valuty 413 family are allocated at the average value of the coefficient of economic use. Optimal average lactation animals belong to the Voli 8369 and Shchepky 4344 families. In some families identified animals that have a lifetime yield of more than 50.0 thousand kg of milk. The influence of the origin of cows on the indices of milk productivity and effectiveness of lifetime use was installed. Between separate parameters of milk production and indicators of the duration and effectiveness of lifetime use of a set of reliable correlation, the magnitude and direction of which are different in animals of different families.

scholarly journals PRODUCTIVE LONGEVITY OF DIFFERENT LINES COWS OF PRYCARPATSKYY INTRA-BREED TYPE OF UKRAINIAN RED-AND-WHITE BREED

2018 ◽  
Vol 56 ◽  
pp. 32-40
Author(s):  
О. Yu. Ilnytskа ◽  
Ye. I. Fedorovych ◽  
N. P. Mazur ◽  
V. V. Fedorovych
Keyword(s):  
Time Use ◽  
Linear Dependence ◽  
Milk Fat ◽  
Reproductive Function ◽  
Life Time ◽  
High Productivity ◽  
Average Lifespan ◽  
Breed Type ◽  
White Breed ◽  
Economic Use

Duration of economic use of dairy cattle is one of the most important reserves for the further growth of the number of livestock, improvement of breeding and productive qualities of animals. Since the improvement of domestic dairy breeds is mainly due to the crossbreeding with the bulls of the Holstein breed, a continuous analysis of the breeding process in the breed and in its individual genealogical formations, in particular in the types and lines, in order to establish the best ways to conduct selective work with the breeds, is relevant. Detection and evaluation of lines, the descendants of which are capable of prolonged productive use, will allow for an optimizing selection for lengthening the life-time use of cows. In this regard, the purpose of our research was to study the duration and effectiveness of life-time use of cows of different lines of the Prycarpathian intra-breed type of Ukrainian Red-and-White breed and the reasons for their release from the herd. Research conducted on cows of inter-breed type of Prycarpathian Ukrainian Red-and-White dairy breed in the PAE "Mamayivske" Kytsman district based on the base of zootechnical register. The sample included 1075 animals, the first of which was at least eight years before the start of the study. Retrospective analysis of the duration and effectiveness of life-time use of cows was carried out according to Yu. P. Polupan's method. It was established that the duration of economic use of cows in the PAE Mamayevske, depending on the line, was within the range of 3.1–6.5 lactation. Life yield (3294 days), productive use (2454 days), lactation (1954 days), lifetime milk yield (37444 kg), lifetime number of fat (1394 kg), the number of lactations for life (6,5 lactation) and the rate of economic use (0.74) were the best animals that belonged to the P. Astronavt line 1458744. Approximate figures of productive longevity of cows were marked in Rigel line 352882. The descendants Valiant 1,650,414 were of the smallest used in herds and had the lowest performance line. The effect of the linear dependence of cows on the duration and effectiveness of their productive use, depending on the indicator, was within the range of 4.26–31.17%. It should be noted that the most significant impact of the line was on yield for one day of productive use (31.17%) and one day of lactation (30.43%). The least effect on the linear dependence of cows was on yield for one day of life (4.26%) and the average lifespan of fat in milk (4.79%). Strength of the line's influence on life yield, productive use and lactation of animals, the number of lactation per life and the rate of economic use, depending on the indicator, was within 12.11–16.45%. The coefficients of inheritance of life yields, productive use and lactation and the number of lactations calculated by the mother-daughter method were 15.8; 22.0; 21.4 and 19.1%. Life yields, the lifetime of milk fat and the average lifespan of fat in milk were the lowest level of inheritance – respectively 6.3; 7.5 and 10.1%. The highest coefficients of inheritance were noted for one day of productive use (39.4%) and lactation (46.8%). As a rule, daughters whose mothers have maintained high productivity for a long time and have long been exploited also have potential for prolonged productive use. We did not reveal any special differences between animals of different lines by the coefficients of inheritance of the above-mentioned indices. Disposal of animals from the herd was mainly due to reproductive function disorders (25.2–34.6%) and low productivity (13.4–27.1%). Among the studied lines due to the reproductive function impairment, the most abandoned animal lines of the P. Astronavt and Rigel were 34.6 and 31.7% respectively, while the least of those of the Valiant line was 25.2%. Due to its low productivity and disease, the largest number of cows (13.4–27.1%) fell out of the Valiant line. At the same time, the animals of the Valiant line were marked by the lowest percentage of rejection due to physiological aging (15.0%), and the highest was in animals P. Astronavt line (21.3%). Due to diseases of the limbs, from the herd dropped, depending on the line, 8.0–12.1% of cows, due to injuries and accidents - 3.2–5.7%, and for other reasons - 4.7–9.3%.

scholarly journals Influence of outbreeding and inbreeding on the productive longevity of dairy cows

2017 ◽  
Vol 19 (79) ◽  
Author(s):  
N. P. Babik ◽  
Ye. I. Fedorovych
Keyword(s):  
Life Expectancy ◽  
Dairy Cows ◽  
Milk Fat ◽  
Life Time ◽  
Significant Deterioration ◽  
Black And White ◽  
Holstein Breed ◽  
Lifetime Number ◽  
Economic Use ◽  
Close Inbreeding

The data on the indicators of the duration and effectiveness of life-time use of Holstein, Ukrainian Black and Red-and White dairy cows obtained from unrelated and different degrees of related mating are presented. The sample includes information on zootechnical records of 15 farms of different regions of Ukraine (Ivano-Frankivsk, Lviv, Volyn, Rivne, Ternopil, Vinnytsya, Kyiv, Cherkasy, Chernihiv and Kirovograd). To assess the productive longevity of cows for each cow were examined such indicators as life expectancy, economic use and lactation, life expectancy, life expectancy of fat in milk, life expectancy of milk fat, average yields for one day of life, one day of economic use and one day of lactation, lactation coefficient. It was established that among studied livestock of dairy breeds more cows was obtained by outbreeding (Holstein breed – 62.2, Ukrainian Black-and-White dairy – 75.5 and Ukrainian Red-and-White – 76.9%). Among the inbred animals, more cows were obtained from distant and moderate degrees of family ties. At the same time, inbred animals were characterized by higher rates of productive longevity compared with outbreeds. Among the inbred animal life expectancy, lasting productive use, duration of lactation, lifetime milk yield, lifetime number of milk fat and number of lactations for the life cows of all studied species obtained by close and moderate inbreeding were the best (exception – lifetime yield of Ukrainian Black- and Red-and-White and lifelong amount of milk fat of Red-and-White animals. According to inbreeding rate less than 0.78 and more than 12.5%, there was a significant deterioration in both the duration of productive use of cows and their lifelong yields. Inbred depression was detected only in Holstein breed animals, which were obtained by close inbreeding. This indicates a significant decline in most indicators of their productive longevity. Ukrainian Black and Red-and-White dairy breeds, which were obtained through close inbreeding, the indicators of life expectancy and life expectancy, on the contrary, increased compared with outbred animals.

scholarly journals DURABILITY AND EFFICIENCY OF LIFETIME USE OF RED-AND-WHITE DAIRY CATTLE

2020 ◽  
Vol 59 ◽  
pp. 78-91
Author(s):  
Yu. P. Polupan ◽  
Yu. F. Melnik ◽  
О. D. Biriukova ◽  
M. M. Peredriy
Keyword(s):  
Milk Fat ◽  
Phenotypic Variability ◽  
Dispersion Analysis ◽  
Breeding Value ◽  
Average Life Expectancy ◽  
Holstein Breed ◽  
Parent Groups ◽  
Related Group ◽  
High Level ◽  
Economic Use

The study was conducted on 325 cows of Ukrainian Red-and-White Dairy and Holstein breeds of the herd of the farm “Khristinovske”. These cows were descended from 28 bulls of 12 lines and related groups. A sufficiently high level of indicators of the duration and effectiveness of lifetime use of cows was established. The average life expectancy of the cows under control was 2750, economic use was 1711, and lactation was 1459 days. An average of 26221 kg of milk, 1097 kg of milk fat and 889 kg of protein were obtained from cows in lifetime (3.63 lactations). On average, 8.7 kg was milked per day of life from cows, on day of economic use – 14.6 kg, on day of lactation –17.2 kg. Received 657, 1030 and 122 g of milk fat and protein, respectively. On average, the coefficient of economic use rate was 58.5%, the lactation rate was 85.6%, and productive use was 49.9%. For most of the studied features of the duration and effectiveness of lifetime use, multidirectional and low interspecific differentiation were established. Holstein cows had the same cows of Ukrainian Red-and-White Dairy breeds as expectancy of life, economic use, and lactation. Cows of the Holstein breed were dominated by cows of Ukrainian Red-and-White Dairy for milk fat and protein yield for one day of life, economic use, lactation and lactation rate. In animals of Ukrainian Red-and-White Dairy breed with increasing conditional bloodiness by Holstein, duration and effectiveness of lifetime use varied curvilinearly. For the most part, the cows group with 87.5% conditional bloodiness by Holstein had the advantage. A certain level of intergroup differentiation is established by the genetic factors of cows' lineage or related group and father parentage. For the most signes of duration and effectiveness of lifetime use are characterized by the better indicators animals of the P. F. A. Chief 1427381 related group and the genealogical line of R. Citation 267150, and by the worse indicators – P. Astronaut 1458744 line. In some cases, the intergroup difference reaches a significant level (up to P < 0.05). Of the half-sisters by parent groups, the daughters of Tumpi 112367468, Vize 660013269, and Roman 660886883 had the highest prevalence and effectiveness of lifetime use, and the worst were the descendants of Y. J. Gladiator 5840283 and Voron 3206. A dispersion analysis confirmed the genetic predisposition of the phenotypic variability of the studied traits of the duration and effectiveness of economic use of cows. On average, by all counted signs, linear membership determines 6.0% of the total phenotypic variability, and parentage from father – 12.1%. Therefore, when selecting the sires, their linear identity should be taken into account with the unconditional priority of the breeding value of the bulls according to the complex breeding index.

PRODUCTIVE LONGEVITY DAUGHTERS OF SIRES UKRAINIAN BLACK-AND-WHITE DAIRY BREED

2016 ◽  
Vol 52 ◽  
pp. 134-144 ◽  
Author(s):  
L. M. Khmelnychyy ◽  
V. V. Vechorka
Keyword(s):  
Milk Yield ◽  
Negative Correlation ◽  
Milk Fat ◽  
Average Lifetime ◽  
High Positive Correlation ◽  
Black And White ◽  
Fat Yield ◽  
High Level ◽  
Economic Use ◽  
Domestic Breeding

In pedigree farm of Cherkasy region, in the modern highly mechanized technologies of milk production, research on studying influence of sires’ heredity on the duration of use and lifetime productivity of their daughters was conducted. The research materials were withdrawn livestock of daughters of Ukrainian Black-and-White and Holstein sires in the amount of 784 head. Duration of lactation, milk yield, content and yield of milk fat for the entire lactation were recorded for each lactation. The following indicators were studied: lifetime, duration of economic use, lifetime milk yield, lifetime milk fat yield, average lifetime fat content in milk, average milk yield per day, average milk yield for a day of economic use and the number of used lactations. On assessing lifetime, the best were daughters of Ukrainian Black-and-White Dairy sires with indicators 3589 and 3303 days. A reliable difference in their favor in comparison with the average for the herd was 1351 and 1065 days (P < 0.001). Comparison of progeny of native sires and Holstein sires also showed significant predominance in lifetime of daughters in their favor, which ranged from 373 to 1841 days (P < 0.001), and duration of productive use – from 438 to 1815 days (P < 0.001). Variability in the number of used lactations varied widely from 1.7 to 6.1 units. In the ranking on the ground of number of used lactations the first and second were sires of domestic breeding – Fajans (6.1lact.) and Avans (5.2 lact.). Most daughters of Holstein sires were used less than the average for the herd. Highly reliable negative correlation between milk yield during the first lactation and the use duration indicators, the lack of correlation between the first lactation yield and lifetime yield obtained in our studies on experimental livestock of 784 head, gives grounds to assert that high milk yield during the first lactation leads to reduction in duration of use and does not always guarantee high figures of lifetime productivity. Milk yield for a day of economic use has a high positive correlation with yield in the first lactation (r = 0.438), lifetime milk yield (r = 0.325), lifetime milk fat yield (r = 0.283) and, especially, yield for a day of life (r = 0.701). With traits of lifetime, economic use duration and CEU, milk yield per day of life has slight negative correlation. Thus, according to figures of use duration and lifetime productivity for progeny of estimated sires of different origin, it is possible to make the generalization that improvement of Ukrainian dairy breeds should be based on the best genetic resources of sires of domestic breeding. When you use foreign breeding sires it is advisable to combine their breeding qualities with assessment of longevity. According to the research should make the following conclusions. The duration of use and lifetime productivity of Ukrainian Black-and-White Dairy cows in the breeding herd are determined by of sires’ individual heredity. High level of milk yield during the first lactation in estimated sires’ progeny does not guarantee an increase in traits of economic use and lifetime productivity. Progeny of domestic breeding bulls was better by traits of productive longevity than purebred progeny of Holstein sires.

scholarly journals The influence of live weight of holstein cows on the duration and effectiveness of their economic use during the period of breeding

2017 ◽  
Vol 19 (74) ◽  
pp. 71-75
Author(s):  
N. P. Babik ◽  
Ye. I. Fedorovych ◽  
V. V. Fedorovych
Keyword(s):  
Body Weight ◽  
Milk Yield ◽  
Milk Fat ◽  
Correlation Coefficients ◽  
Live Weight ◽  
The Body ◽  
Holstein Cows ◽  
Life Duration ◽  
The Impact ◽  
Economic Use

There are shown data on the impact of live weight of Holstein cows on the duration and effectiveness of their lifetime use during the period of breeding. It was established that the animals which are not reached to the body breed standard of their weight at some period of age had lower rates and duration of lifetime use and productivity. Animals with live weight at 6 months – 181–220, 12 months – 311–340, 18 months – 411–440, at the first insemination – 411–440 and at first calving – 511–540 kg had the longest life duration, productive use, quantity of lactations during all life and highest lifetime productivity. The highest positive correlation coefficients were established between body weight of cows at different periods of their growth (exception – live weight at first calving) and lifetime milk yield (r = 0.072–0.106), the average lifetime fat milk (r = 0.062–0.126), lifetime quantity of milk fat (r = 0.077–0.112), milk yield per day of life (r = 0.077–0.165) and productive use (r = 0.077–0.112). These links were much weaker between live weight and life duration in the studied ages of animals (r = -0.009 – +0.062), productive use (r=-0.125 – +0.094), lactation (r = -0.093 – +0.038) and the number of lactations during life (r = -0.134 – +0.029). The lowest correlation coefficients were between body weight at first calving of cows and the studied parameters of duration and effectiveness of their lifelong use. The impact of the live weight of animals during growing period on the duration of their economic use was the highest (23.34–31,30%), the number of lactations for life (13.79–28.08%), lifetime milk yield (11.89–15.68%) and lifetime amount of milk fat (11.42–15.16%).

scholarly journals USEFUL FEATURES OF DAIRY COWS AND THEIR CONNECTION WITH PRODUCTIVE LONGEVITY

2018 ◽  
Vol 56 ◽  
pp. 50-64 ◽  
Author(s):  
N. P. Mazur ◽  
Ye. I. Fedorovych ◽  
V. V. Fedorovych
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Milk Fat ◽  
Correlation Coefficients ◽  
Live Weight ◽  
Milk Productivity ◽  
Black And White ◽  
Holstein Breed ◽  
Economic Use ◽  
Selection Of

A fundamental genetic improvement of domestic dairy breeds is carried out by using the gene pool of the best foreign breeds, in particular Holstein. This approach has greatly improved the milk productivity of cows, but has led to a significant deterioration in reproduction, longevity, product quality, general animal health etc. Taking into account that the increase of the milk productivity of cows leads to a shortening of their use, this problem will only become aggravated over time. Therefore, it is now necessary to direct scientific research into a comprehensive assessment of animals taking into account the signs of lifelong productivity. In view of the above, the purpose of our research was to study the economic utility signs of dairy cows and their relationship with productive longevity. The research was conducted on cows of Holstein (n = 2902), Ukrainian Black- (n = 14876) and Red-and-White (n = 2176) dairy breeds. To characterize the economic useful signs of animals of the studied breeds based on the materials of the primary zootechnical and breeding records, weighed growth of animals, reproductive capacity, milk productivity and duration and efficiency of lifetime use were studied. It was established that heifers of investigated dairy breeds were characterized by a moderate intensity of growth of live weight, as evidenced by average daily increments from birth to 18 months of age: in animals of Holstein breed – 644, Ukrainian Black-and-White milk breed – 641 and Ukrainian Red-and-White dairy breed 692 g. The first fruitful insemination of heifers of the Holstein breed occurred on average at the age of 19.1, Ukrainian Black and Red-and-White dairy breeds - 20.4 and 20.8 months, while their live weight at that was 405.3; 414.3 and 438.5 kg respectively. The milk yield of the Holstein breed cows, depending on the lactation, was 4846–7920 kg, the fat content in milk was 3.63–3.74% and the amount of milk fat was 181.2–279.7 kg, the Ukrainian Black-and-White milk breed was 4008–6317 kg, 3.63–3.70% and 148.6–228.8 kg respectively, while Ukrainian Red-and-White milk is 4578–6592 kg, 3.74–3.87% and 177.2–245.9 kg. The cows of the given breeds were used in herds only 2.32–2.50 lactation. The highest life milk yield was noted in animals of the Holstein breed (18,669 kg), and the lowest (14,940 kg) in the cows of the Ukrainian Red-and-White breed. Correlation analysis of economic characteristics of dairy cows with indicators of their productive longevity confirms the possibility of conducting an indirect predictive selection of animals in order to form high-yielding herds with long-term economic use. Among the studied features, the greatest predictive value (P < 0.001) for the indicators of life expectancy, productive use, lactation, the number of lactation per life, life yield and lifetime of milk fat have yield of cows for the first (r = -0.217 – +0.205) and the best lactation (r = +0.061 – +0.609). An intermediary predictive selection of animals can also be carried out according to the duration of their first service period (r = -0.462 – +0.106) and live weight during growing season (r = -0.286 – +0.126). It was established that live weight at the first insemination and the first calving significantly influenced the indicators of life yields, economic use and lactation of animals, as evidenced mainly by higher and reliable values of correlation coefficients between these indices. It should also be noted that the correlation coefficients between the live weight of cows in the first calving and the duration of life, productive use, lactation and the number of lactations in life were somewhat higher but negative values (r = -0,130 – -0,070), compared with the between live weight at the time of first insemination and the above indicators of longevity of animals (r = -0,037 – +0,094). This suggests that the effect of live weight on the first calving of animals on their longevity was somewhat higher than the effect of live weight at the first insemination. Our data show that the selection of cows by the age of the first calving and the duration of the first lactation is not significant, since there is practically no link between these features and the indicators of productive longevity.

scholarly journals Dairy productivity of Simmental breed cows depending on their live weight during growing period

2017 ◽  
Vol 19 (79) ◽  
Author(s):  
V. V. Fedorovych
Keyword(s):  
Milk Fat ◽  
Animal Health ◽  
Correlation Coefficients ◽  
Live Weight ◽  
Fat Content ◽  
Young Age ◽  
Milk Productivity ◽  
Growing Period ◽  
Farming Industry ◽  
Economic Use

One of the main factors for effective breeding is the level of growth of repair young animals, which at all ages has a significant impact on animal health and their future productivity, duration of economic use and largely determines the efficiency of the dairy farming industry. It is important to know the potential capabilities of each animal's body since its birth, since the genetically programmed productivity of cows can only be realized if they are favorably grown at different ages at a young age. Therefore, the purpose of the research was to study the dependence of the milk productivity of the Simmental breed cows on their live weight during the period of growing. The research was carried out at LCC «Litinske», Drohobych district of Lviv region. The live weight of cows was studied at the age of 6, 12, 18 months, at the first insemination and after the first calving, and the assessment of milk productivity was carried out on the basis of diet, the fat content of milk and the amount of milk fat for the first, second, third and best lactation on the materials of the primary zootechnical accounting. It was established that the milk yield of cows, depending on lactation, were within the range of 3026.4–3685.8 kg, the fat content of milk – within 3.76–3.80% and the amount of milk fat – within the range of 113.6–139.8 kg. The live weight of the experimental animals at birth was 32.5, at 6 months – 185.9, in 12 months – 302.3, in 18 months – 405.2, at the first insemination – 396.9 and in the first calving – 514.7 kg It should be noted that the first fertile insemination of Simmental heifers occurred at the age of 19.7 months, and their first calving – at the age of 29.0 months. The highest diet and the amount of milk fat in cows were observed for their live weight at birth 33–34 kg, at 6 months of age – 171–190, in 12 months – 291–300, in 18 months – 401–415, at the first insemination – 416–430 and in the first calving – 501–530 kg. The correlation coefficients of the live weight of animals at young age and their subsequent milk productivity, depending on the age and lactation of the animals, were within the range of 0.18–0.24, and the influence of live weight of heifers on their subsequent milk productivity – within 12.3–20.1%.

scholarly journals FEATURES OF HEREDITARY INFLUENCE OF HOLSTEIN BLOOD SHARE ON INDICATORS OF LONGEVITY OF COWS OF UKRAINIAN RED-AND-WHITE DAIRY BREED

2018 ◽  
Vol 51 ◽  
pp. 170-177 ◽  
Author(s):  
L. M. Khmelnychyi ◽  
V. V. Vechorka
Keyword(s):  
Life Expectancy ◽  
Milk Yield ◽  
Milk Fat ◽  
Positive Influence ◽  
Milk Productivity ◽  
Significant Difference ◽  
Two Generations ◽  
The Impact ◽  
Economic Use ◽  
Dairy Breed

At the base of a breeding farm in Cherkassy region, with the modern highly mechanized technologies of milk production, five groups of cows – the crossbred genotypes of Ukrainian Red-and-White Dairy breed with a gradation of 12,5% blood share of Holstein (I – 37,5-50,0; II – 50,1-62,5; III – 62,6-75,0; IV – 75,1-87,5; V – 87,6-100,0) were studied. The aim of this study was to explore the impact of Holstein heredity on indicators of life expectancy, economic use and lifetime productivity of cows. The results of retrospective analysis proved significant effect of Holstein conditional heredity on indicators of life expectancy, economic use and lifetime productivity of the Ukrainian Red-and-White Dairy cows of the experimental farm. The best among all five groups by indicators of life expectancy, economic use, number of lactations, lifetime milk yield and yield of milk fat, and milk yield for one day were the crossbred genotypes of the second group with conditional heredity of Holsteins 50,1-62,5 %. The advantage of the second group of animals with Holstein heredity from 50,1 to 62,5 % differed significantly in life expectancy and economic use exceeding other groups of animals by these traits by 451-1449 and 465-1472 days respectively with a significant difference at P<0,001, except their comparison with the first group. The animals of this group were used the longest in the herd, during five lactations and characterized by the highest coefficient of economic use and it is higher by 1,2-3,1 lactation and by 6,0-20,7 coefficient of economic use respectively, with degree of reliability at P<0,01-0,001 compared with all the groups of crossbred genotypes. For lifetime milk productivity advantage was also in favor of crossbred animals with Holstein heredity from 50,1 to 62,5%. If milk yields of crossbred genotypes of the first and third groups were less than the yield of animals of the second group only by 5571 and 5848 kg (P<0,05 and 0,01), then for high-blood genotypes of the fourth and fifth groups they were less by 11813 and 14021 kg at P<0,001 or in 1,7 and 2,0 times. In general, cows with the highest share of Holstein blood (87,6-100,0%), and this is genotype which will have a dominant distribution in the array of Ukrainian Red-and-White Dairy breed at least for one or maximum for two generations, with 305-day milk yield of first-calf heifers of 5677 kg and for one day of economic use 14,0 kg of milk exceeded other groups of crossbred genotypes with degree of reliability by 455-806 (P<0,001) and 0,8-2,5 (P<0,01-0,001) kg of milk respectively; it unconditionally testifies to positive influence of Holstein heredity on these traits. The best crossbred genotypes by indicators of life expectancy, economic use, number of lactations and lifetime productivity were with 50,1-62,5% share of Holstein blood in the herd of Ukrainian Red-and-White Dairy cattle. Productivity of crossbred cows per lactation increased with growing share of Holstein blood, but indicators of longevity and lifetime productivity decreased significantly, especially at high-blood animals with heredity of improving breed higher than 75,1%.

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