scholarly journals FEATURES OF THE CONFORMATION TYPE OF DAIRY CATTLE OF DIFFERENT ORIGIN AND CORRELATIVE VARIABILITY OF LINEAR TYPE TRAITS WITH MILK YIELD COWS OF HOLSTEIN BREED

2018 ◽  
Vol 56 ◽  
pp. 77-83 ◽  
Author(s):  
L. M. Khmelnychyi ◽  
V. V. Vechorka ◽  
S. L. Khmelnychyi
Keyword(s):  
Milk Yield ◽  
Body Condition Score ◽  
Point System ◽  
Body Depth ◽  
Linear Type ◽  
Black And White ◽  
Holstein Breed ◽  
Significant Difference ◽  
The Difference ◽  
Reliable Correlation

Researches were carried out on estimation cows of Ukrainian Black-and-White dairy and Holstein breeds by the method of linear classification in the herd of pedigree farm LLC "Vladana" in Sumy region. When comparing cows of Ukrainian Black-and-White dairy with Holstein, the improving influence sires of Holstein breed on the development of conformation of cows in the herd according to indicators of the linear assessment by 100-point system was found. The difference was based on the group traits of dairy type 1,1 score, legs – 1,3, udder – 1,6 and final score – 1,2. In all comparisons, the difference was highly reliable at P < 0.001. By descriptive traits improvement with a significant difference were observed in height (by 0,3 scores; P < 0,05), body depth (by 0,3 scores; P < 0,05), rump width (by 0,6 scores; P < 0,001), angle of pelvic limbs (by 0,4 scores, P < 0,001), foot angle (by 0,9 scores, P < 0,001), front udder attachment (by 0,4 scores, P < 0,001), central ligament (by 0,8 scores; P < 0,001), udder depth (by 0,9 scores; P < 0,001) and teats length (by 0,3 scores; P < 0.01). Animals of Holstein breed compared to Ukrainian Black-and-White dairy became more narrow-chested (by 0,7 scores; P < 0,001). The identified relationships between linear traits and value of milk yield of first-born cows in the controlled herd were determined the existence of a reliable correlation between estimation both for individual complexes of conformation traits and overall assessment by 100-point classification system (r = 0,198–0,464; P < 0,001). Positive and reliable correlation with milk yield was observed by a number of descriptive traits: height (r = 0,359), body depth (r = 0,384), angularity (r = 0,474), rump width (r = 0,311), posture of pelvic limbs (r = 0,361), foot angle (r = 0,273), front (r = 0,355) and rear udder attachment (r = 0,330), central ligament (r = 0,311), locomotion (r = 0,305). Body condition score was correlated negatively (r = -0,168). Thus, the determined correlations between linear traits of the conformation and milk yield for lactation have been indicated the reliability of selection of cows by conformation type, simultaneously improving milk production. The using sires of Holstein breed during absorbed crossing with Ukrainian Black-and-White dairy breed have been improved linear traits of the conformation type in their offspring. Positive relationship between group and main descriptive linear traits characterizing conformation, and value of milk yield would be facilitated by efficient indirect selection based on the type and productivity.

Milk productivity of cows depending on their origin on genealogical line

2021 ◽  
pp. 21-30
Author(s):  
M. V. Voronov ◽  
N. A. Fedoseeva ◽  
T. N. Pimkina ◽  
O. V. Gorelik
Keyword(s):  
Milk Yield ◽  
Mass Fraction ◽  
Positive Association ◽  
Specific Weight ◽  
Milk Productivity ◽  
Black And White ◽  
Holstein Breed ◽  
Significant Difference ◽  
White Breed ◽  
The Difference

The improvement of cattle of Black-and-White breed by mating of maternal stock with the sires of Holstein breed continues at the present time. Therefore, breeding in pedigree farms for the production of milk is carried out including the use of Holstein lines. The purpose of the work was to assess the milk productivity of cows of Black-and-White breed, with a high proportion of blood in Holstein breed, depending on their linear origin. In the herd of the breeding farm where the research has been carried out, the lines Reflection Sovereign 198998 and Wes Ideal 933122 occupy the dominant position in terms of the specific weight of cattle, followed by the line Montwick Chieftain 95679. The difference in milk yield between groups of cows of different lines was from 3,0 to 354 kg or 0,04 to 4,6 %. The highest milk yield was shown by the first-calf heifers of the line Wes Ideal 933122 – 7787±123,21 kg. In the milk of the first-calf heifers of the line Pabst Governor 882933 compared with herdmates of other lines the increased content of fat and protein has been noted,. The difference in the mass fraction of fat in milk was significant in favor of Pabst Governor 882933 cows (P ≤ 0,01–0,001). There was also the significant difference in the mass fraction of fat in milk between the groups of cows of the lines Montwick Chieftain 95679, Reflection Sovereign 198998 and Wes Ideal 933122 in favor of the latter at P ≤ 0,05–0,01. A definite association between milk yield and the mass fraction of fat in milk has not been established. There is a pattern of the positive association between the mass fraction of fat and the mass fraction of protein in milk and it is clearly seen that with the increase in the mass fraction of fat in milk, there is the increase in the mass fraction of protein.

Linear type trait evaluation of firstborns of Ukrainian Black-and-White Dairy breed depending on the body build

2019 ◽  
pp. 24-34
Author(s):  
R. Stavetska ◽  
Y. Dynko ◽  
M. Bushtruk ◽  
I. Starostenko ◽  
O. Babenko ◽  
...  
Keyword(s):  
Body Condition Score ◽  
High Capacity ◽  
The Body ◽  
Body Depth ◽  
Linear Type ◽  
Body Build ◽  
Black And White ◽  
Condition Score ◽  
Type Traits ◽  
Dairy Breed

It has been experimentally proven that the strength and direction of the connection between the linear type traits evaluation of the Ukrainian black-and-white dairy breed cows and their body build depends on the type of the build and the sign of the exterior. The study was conducted in 2018 on a breeding plant of the Ukrainian Black-and-White Dairy breed SPC named Shchorsa in Kiev region (n=89). Differentiation of cows on types of their body build was conducted by the method proposed by Chernenko (low-capacity, mid-capacity and high-capacity types) and Kolesnik (by the massiveness index – on the friable and dense, the bone index – delicate and rough, the wide-breast and wide-rump indices – on narrow-body and wide-body types). It was found that the cow-heiferswere well-developed, had intermediate stature and optimum body condition score, deep body, and wide, slight slope rump. They alsohad desirable rear legs, set and foot angle but some toe-out, the udder was well-balanced. Under the good total score of the exterior of studied cows there were some animals with short stature (134– 136 cm), very wide rump, straight rear legs side view and toe-out, extremely steep foot angle, loose fore udder attachment, deep udder below hocks and front teat placement inside of quarter. The degree of development of the studied linear traits of cow-heifers confirms their in-herd variability. The variability of the exterior traits varies from 10,7 % (body depth) to 38,6 % (stature). In addition to the stature of a significant variability was characterized of angularity (22,4 %), rear legs set (22,5 %), body condition score (21,8 %), as well as traits that describe udder: rear udder attachment (31,4 %), udder depth (32,6 %) and front and rear teat position (31,3 % and 25,1 %, respectively). The high variability of linear traits indicates the possibility of effective their selection. As a result of the research, it has been established that the strength and direction of the correlations between the linear type traits evaluation of Ukrainian Black-and-White Dairy breed cows and the type of their body build depends on the type of the body build and the linear trait. The low-, mid- and high-capacity bodies build types (according to Chernenko) reliably correlate with chest width (r=0,58) and body depth (r=0,48), rear legs rear view (r=0,30), the central ligament (r=0,28), udder depth (r =-0,22) and teat length (r=0,25), P˂0,01–0,001. Friable and dense bodies build (according to Kolesnik) were most strongly associated with stature (r=-0,28), chest width (r =-0,70), and body depth (r=-0,38), as well as with rear legs rear view (r=-0,23), P˂0,05...0,001; delicate and rough bodies build – with stature (r=-0,51), angularity (r=-0,22),rump width (r=-0,35), udder depth (r=-0,27) and rear udder attachment (r =0,20), P ˂ 0,05–0,001; narrow-body and wide-body types – with chest width (r=0,30) and rump width (r=0,23), P˂0,05–0,01. Linear type trait evaluation of cows depends on the body build. The strength and direction of the correlations between types of body build and linear traits showed that the most informative is the classification of the body build by low-, mid- and high-capacity according to Chernenko – on the average η2x=17,5 %. The less informative – by narrow-body and wide-body types according to Kolesnik – η2x=7,6 %. The classification of cows on delicate-rough, narrow-body and wide-body types (according to Kolesnik) according to informativeness and reliability can have the intermediate position – η2x=10,0–11,5 %. The strongest influence on the body build has the cows’ height (η2x=27,9 % on average for all studied types of body build), chest width (η2x=33,5 %), body depth (η2x=21,8 %), rump width (η2x=24,1 %) and rear legs (η2x=18,7 %). Key words: cows, linear type trait evaluation, body build, correlation, power of influence.

scholarly journals ESTIMATION OF HOLSTEIN BREED BULLS BY DAIRY PRODUCTIVITY OF THEIR DAUGHTERS

2020 ◽  
Vol 59 ◽  
pp. 26-34
Author(s):  
S. L. Voitenko ◽  
O. V. Sydorenko
Keyword(s):  
Milk Yield ◽  
Phenotypic Variability ◽  
Milk Productivity ◽  
Paternal Origin ◽  
Black And White ◽  
Holstein Breed ◽  
The Third ◽  
Holstein Bulls ◽  
The Difference ◽  
Dairy Breed

The scientific community has shown that the genetic improvement of dairy cattle depends on many genotypic factors, including paternal ancestry and lineage. With this in mind, the purpose of our research was to evaluate the Holstein bulls of black-and-white and red-and-white suits of different lines for the milk productivity of their daughters. The research was carried out on the basis of primary breeding records of 10 breeding herds of Ukrainian Black-and-White Dairy breed, 3 – Ukrainian Red-and-White Dairy breed and one – Ukrainian Red Dairy breed, which are subordinated to NAAS. Cows of the studied breeds has divided into groups according to lineage and paternal origin. Studies have revealed a significant differentiation of milk yield of cows of the first and highest lactation not only of one breed, but also of linear affiliation and paternal origin. It was found that the yield of the first lactation in cows of the Ukrainian Black-and-White Dairy breed varied from 3211 kg (Damir 7100354042) to 7884 kg (Dzhokus 113080315) of milk. Noteworthy are the daughters of Dzhokus 113080315, from which 9143 kg of milk were obtained for higher lactation, Polyarsten 342347941 and Manteno 344222859 – 8248 kg and 8290 kg of milk, respectively. The significant influence of paternal origin on the yield of Ukrainian Black-and-White Dairy breed cows of the first and higher lactation (31.0%; P > 0.999) and 37.3% has been proved; P > 0.999). The influence of genealogical formation on the milk productivity of cows was significant and amounted to 10.8% for the first lactation, higher – 10.2%. Some of the first-born Ukrainian Black-and-White Dairy breed has characterized by high milk productivity, which steadily increased until the third and higher lactation. The yield of cows of the Ukrainian Red-and-White Dairy breed of the first lactation varied from 5414 kg (Dialog 2009) to 6689 kg (Larets 6177), testifying to better homogeneity of herds in terms of milk productivity compared to the Ukrainian Black-and-White dairy breed. The highest yield of the third and highest lactation – 7626 kg, had cows-daughters of the bull Roman 660886883 Starbuck line 352790. The variability of milking cows of Ukrainian Red-and-White Dairy breed of the first and highest lactation by 25.0% and 15.2%, respectively, was due to the influence of the father offspring and to a lesser extent – belonging to the line. A very high (6517–8013 kg) realization potential of milking cows of the Ukrainian Red Dairy breed was established, but it also depended on the paternal origin and linear affiliation. The highest yield of the first lactation were shown by the daughters of the bull Belisar 365235897, Dzhorin 114414759 and Tumpi 112367468, who produced 8013 kg, 7323 kg and 7170 kg of milk, respectively. In cows of this breed it was found that yield increased with increasing serial number of lactation, with the third and higher lactation cows produced more than 8000 kg of milk per lactation, and the daughters of bull Dzhorin 114414759 – more than 9000 kg. The influence of the bull on the milk productivity of the first-born cows of the Ukrainian Red Dairy breed (16.7%; P > 0.999) is almost three times higher than this linear affiliation. Significant phenotypic variability of milk productivity of cows of different breeds of half-sisters by the father is established. The advantage of the daughters of the bull Belisar 365235897 of the Ukrainian Red Dairy breed on milking of the first lactation over the representatives of the Ukrainian Red-and-White Dairy breed was 1932 kg (p < 0.001). The difference in milk yield of the first lactation of the half-sisters by the father, the bull Konbeo 579810507 was 1007 kg (p < 0.01), and Roman 660886883 – 717 kg. Thus, a significant phenotypic variability of milk productivity of cows of different breeds of half-sisters by father was established. At the same time, regardless of the breeder, the cows of the Ukrainian Red Dairy breed were characterized by higher milk yield of the first lactation in comparison with the Ukrainian Red-and-White Dairy breed.

scholarly journals EXTERIOR FEATURES OF COWS FIRSTBORN OF SUMY INTRABREED TYPE OF UKRAINIAN BLACK-AND-WHITE DAIRY CATTLE, ESTIMATED BY THE METHOD OF LINEAR CLASSIFICATION

2019 ◽  
Vol 57 ◽  
pp. 87-94
Author(s):  
A. V. Loboda ◽  
D. A. Bardash
Keyword(s):  
Dairy Cattle ◽  
Milk Yield ◽  
Milk Fat ◽  
Selection Process ◽  
Linear Classification ◽  
Body Depth ◽  
Black And White ◽  
Body Development ◽  
The Difference ◽  
Efficiency Of Selection

To study the traits of exterior type of firstborn cows of Sumy intrabreed type of Ukrainian Black-and-White milk breed, a research was carried out in the breeding flock in Sumy region. The first-calf cows were estimated by the method of linear classification according to the age of 2–4 months after calving in two systems – 9-score, with a linear description of 18 conformation traits, and a 100-point classification system, taking into account four sets of breeding traits that characterize: dairy type, body development, condition of legs and feet, and udder morphological qualities. Results of linear estimation cows firstborn in the experimental herd on a 100-point scale indicated that traits within the group average final score was in the range of "good plus." Cows-firstborn were characterized by good development of group traits defining their dairy type (82.9 score), body trait development (84.1 score), condition of legs and feet (82.3 score), udder (82.6 score) and final type score (82.9 score). The development level of 18 conformation traits of cows showed their significant variability inside a controlled herd. In general, estimated animals in the breeding flock of PE "Burynske" of Pidlisnivskoy branch were characterized by well-defined height, body depth, angularity, rump angle, rump width, fore udder attachment, central ligament and udder depth. The results of linear classification showed that body structure of the first-born cows of Sumy intrabreed type of Ukrainian Black-and-White dairy breed at the present stage of selection had a rather good characteristic of descriptive traits that determined their dairy type. According to results of research, first-born cows with estimation "very good" exceeded peers with score "good plus" by milk yield with highly reliable difference of 583 kg (P < 0.001), and with score "good" – at 1884 kg, the difference was also highly reliable at Р ˂ 0,001 With unreliable reducing the fat content in milk from cows with score "good plus" and "good", milk fat gain at firstborn with the assessment "very good" was compared in animals with score "good plus" 20.8, and "good" – at 68.8 kg (R ˂ 0,001). Use in dairy cattle selection process of linear classification method was very effective objective definition of pedigree cows exterior features and a link between the group of linear traits and milk yield – guarantee the efficiency of selection of animals by type.

scholarly journals PHENOTYPIC CONSOLIDATION OF GENEALOGICAL FORMS OF THE SUMSKY INNER TYPE OF UKRAINIAN BLACK-AND-WHITE DAIRY BARK BASED ON THE EVIDENCE OF THE LINEAR ESTIMATION OF THE EXTERIORS

2019 ◽  
Vol 58 ◽  
pp. 72-79
Author(s):  
L. M. Hmelnychyi ◽  
S. L. Hmelnychyi ◽  
A. V. Loboda ◽  
O. I. Klуmenko
Keyword(s):  
Dairy Cattle ◽  
Point System ◽  
Body Structure ◽  
Breeding Method ◽  
Genetic Progress ◽  
Linear Type ◽  
Black And White ◽  
Holstein Breed ◽  
Group Type ◽  
Breeding Groups

Taking into account the importance of evaluation of structural breeding units of created breeds and types of dairy cattle, in the aspect of studying the genetic progress and the desired level of their phenotypic consolidation, the study was carried out to determine the coefficients of phenotypic consolidation of the leading genealogical formations of Sumy intrabreed type of Ukrainian Black-and-White dairy breed by linear traits that characterize the conformation type of animals. In studying of phenotypic consolidation of first-calf cows of different genealogical formations in the experimental group included the offspring of sires lines Valiant 1650414, Starbuck 352790 and Matt 1392858. Breeding groups, depending on the conditional part of heredity improving breed were as follows: I – 62.5–74.9; II – 75.0–87.4; III – 87.5 and >. According to the 100-point system of linear classification, which includes the assessment four groups of body structure traits characterizing dairy type, body development, condition of legs and morphological qualities of the udder, for some of them, depending on the estimated line, observed a desired direction of phenotypic consolidation within the progeny of genealogical formations and evaluated conformation complexes. At the same time, the interlinear differentiation was found on the indicators of consolidation coefficients when comparing conformation complexes. Regardless of the line's representation, a sufficient degree of phenotypic consolidation in the first-calf cows was revealed after a set of traits characterizing dairy type with variability of coefficients – 0.130–0.253 (K1) and 0.125–0.261 (K2), udder morphological qualities – 0.064–207 (K1) and 0.067–213 (K2); a final score of type 0.104–228 (K1) and 0.101–0.234 (K2). Higher coefficients of the phenotypic consolidation of the Valiant's offspring line indicate about their respective level of consolidation by group type traits. The offspring of Matt's line by the level of consolidation coefficients significantly inferior to peers of the Valiant and Starbuck lines. Unconsolidated by conformation type can include the number of animals with conditional heredity Holstein breed 62.5–74.9%. The vast majority of phenotypic consolidation coefficients of estimated traits in this group have been obtained with a negative sign, and if positive then the low level. Cows with a conditional blood of Holstein breed at the level of 75.0–87.4% occupy an intermediate position between low-and high blood hybrids. The proposed coefficients proved to be sufficiently reliable, convenient and easy to use in practical breeding method for assessing the phenotypic consolidation of breeding group’s animals of different structural units and genotypes by the conformation type. The existence of genetic influence on the degree of phenotypic consolidation of most linear traits indicates about the possibility of effective selection of dairy cattle by body structure and morphological udder traits with intensive use of purebred Holstein sires with a high score for linear type classification. In the process of using linear methods of classification, determining coefficients of phenotypic consolidation can sufficiently distinguish different by origin breeding groups of animals. According to the linear traits of conformation with development on the basis of established breeding situation of effective measures to improve the unconsolidated traits in the direction of desired type.

scholarly journals UDDER MORPHOLOGICAL CHARACTERISTICS OF UKRAINIAN BLACK-AND-WHITE DAIRY BREED UNDER ABSORBING CROSSBREEDING

2018 ◽  
Vol 51 ◽  
pp. 153-160
Author(s):  
R. Stavetska ◽  
N. Klopenko
Keyword(s):  
Milk Yield ◽  
Positive Impact ◽  
Relative Size ◽  
Morphological Characteristics ◽  
Black And White ◽  
Holstein Breed ◽  
Relative Value ◽  
Length Width ◽  
The Difference ◽  
Dairy Breed

The aim of the research was to study morphological characteristics of udder, polymastia and polythelia frequency of Ukrainian Black-and-White Dairy first-calf heifers under absorbing crossbreeding and detection of correlation between milk yield per day and morphological characteristics of cows’ udder. The study was conducted in the herds of Ukrainian Black-and-White Dairy breed in the breeding farms «Suholiske» LLC, AF «Matiushi» LLC and AF «Glushky» LLC, Bila Tserkva district, Kyiv region. To conduct analytical studies based on part of Holstein inheritance researched livestock were divided into three groups: 75,0−87,4 % 87,5−99,9 % and 100 %. According to the results of the own research it was found, that under absorbing crossbreeding and increasing of part of Holstein inheritance morphological characteristics of udder of cows in the researched herds have been improved. The highest level of most udder measurements and indexes had first-calf heifers with part of Holstein inheritance 100 %. On average, in the researched herds, cows with part of Holstein inheritance 100 % had the advantage in udder length by 1,4 cm, width – 0,6 cm, depth – 0,4 cm, girth − 1,2 cm, in the distance from the udder bottom to the floor – 0,3 cm, teat length – 0,3 cm, teat diameter – 0,12 cm compared with cows, which had part of Holstein inheritance 87,5–99,9 %, but the difference in performance was unreliable. The advantage over udder measurements of cows with part of Holstein inheritance 75,0–87,4 % in udder length was 3,2 cm, width – 1,7 cm, depth – 1,4 cm, girth – 6,0 cm, distance from the udder bottom to the floor – 1,0 cm, teat length – 0,3 cm, teat diameter – 0,18 cm. In the herd of AF «Glushky» LLC, cows with part of Holstein inheritance 100 % weren’t significantly inferior in udder format index (by 0,1 %) and had the advantage in relative value udder index (by 5,9 %), relative size udder index (by 2,3 %, Р < 0,001) and conditional udder value index (by 214 conditional units) compared with analogical characteristics of cows with part of Holstein inheritance 75,0–87,4 %. In the herd of AF «Matiushi» LLC, cows with part of Holstein inheritance 100 % were characterized by typical reducing of udder format index (by 0,5 %) and the advantage in form index (by 0,08), relative value udder index (by 8,2 %), relative size udder index (by 2,3 %) and conditional udder value index (by 262 conditional units, Р < 0,01) compared with the udder indexes of cows with part of Holstein inheritance 75,0–87,4 %. Advantage in value of udder indexes of cows with Holstein inheritance 100 % compared with cows with part of Holstein inheritance 87,5−99,9 % was: in form index – 0,06, relative value udder index – 4,3 %, relative size udder index – 1,4 % and conditional udder value index – 56 conditional units. In the herd of «Suholiske» LLC, cows with part of Holstein inheritance 100 % also had lower performance of udder format index (by 0,5 %) and dominated by form index – 0,07, relative value udder index (6,4 %, Р <0,05), relative size udder index (1,9 %, Р < 0,05) and conditional udder value index (by 308 conventional units) compared with same indexes of cows with part of Holstein inheritance 75,0–87,4 %. Therefore, absorbing crossbreeding and increasing of part of Holstein inheritance were accompanied with increasing of udder length, width, depth and girth as well as a gradual increasing of udder indexes at first-calf heifers. In the own research, differences were found in the direction, strength and probability of correlations between milk yield and morphological characteristics of first-calf heifers’ udder. In most cases, the correlations between milk yield and udder measurements were positive and weak in strength. Cows with part of Holstein inheritance 75,0–87,4 % had strong positive probable correlations between milk yield per day and udder length (r = + 0,68, Р < 0,05), milk yield per day and teat length (r = + 0,64, Р < 0,05). Cows with part of Holstein inheritance 87,5−99,9 % had moderate in strength probable correlation between milk yield per day and udder length (r = + 0,45, Р < 0,001). It should be noted that in this group of cows, correlations between milk yield per day and udder morphological characteristics had high probability (Р < 0,001) in all cases. Cows with part of Holstein inheritance 100 % had these correlations different in direction. Weak positive probable correlation between milk yield per day and udder length (r = + 0,14, Р < 0,01), moderate in strength, negative correlation – between milk yield per day and teat length (r = − 0,06, Р < 0,05) and moderate in strength, probable correlation between milk yield per day and distance from the udder bottom to the floor (r = − 0,35, Р < 0,001) were found.  It was found, that absorbing crossbreeding led to decreasing of the frequency of extra teats in cows. The less frequency of extra teats had cows with part of Holstein inheritance 100 %. In the breeding farm AF «Glushky» LLC, the frequency of cows with extra teats under increasing of part of Holstein inheritance from 75,0−87,4 % to 100 % declined from 9,0 to 6,9 %, in AF «Matiushi» LLC − from 16,0 to 5,7 %, in «Suholiske» LLC − from 14,6 to 8,3 %, on average in these herds – from 11,8 to 6,7 %. This is an evidence of positive impact of Holstein breed on extra teats frequency and udder improvement of Ukrainian Black-and-White Dairy cows. In the frequency of udder parts atrophy there was observed the opposite trend: under absorbing crossbreeding the frequency of cows with udder parts atrophy had increased.

scholarly journals FORMATION OF ECONOMIC UTILITIES OF DAIRY CATCH DEPENDING ON ORIGIN OF THE FATHER, LINE AND RELATED GROUP

2017 ◽  
Vol 53 ◽  
pp. 69-78 ◽  
Author(s):  
I. V. Bazyshina
Keyword(s):  
Phenotypic Variability ◽  
Reproductive Capacity ◽  
Milk Productivity ◽  
Black And White ◽  
Holstein Breed ◽  
Significant Difference ◽  
The Matrix ◽  
Bay Window ◽  
Related Group ◽  
The Difference

Material and methods of research. The study was carried out based on the materials of the primary pedigree registration in the herd of the leading breeding plants for breeding Ukrainian red and black-and-white dairy breeds of cattle, OOO "Agrofirma "Svitanok" in the Donetsk region. The number of the firstborns we analyzed amounted to 515. In general, the matrix of observations was compiled containing information on 1271 animals for 448 variables (signs). Results. In order to assess the effectiveness of the use of these selection groups in the herd, a comparative analysis of group averages for the main breeding characteristics was carried out. The significant difference in the number of bulls used in the herd of the bull breeding farm was taken into account, taking into account the characteristics of the daughters. Through the age of the first calving, the difference between the best and worst groups of half-sisters reached 159 ± 0.1 days or 20.3% (P <0.001), the reproductive capacity - 0,109 ± 0,017 or 11,3% (P <0,001), I milk for 305 days of the first lactation - 1616 ± 169.2 kg or 24.8% (P <0.001), the second - 1229 ± 57.2 kg or 18, 0% (P <0.001), the third - 1899 ± 426, 8 kg or 27.9% (P <0.001). On the content of fat in milk, the intergroup difference reached 0.41 ± 0.039% (P <0.001) of the first, 0.18 ± 0.053% (P <0.001) - for the second and 0.09 ± 0.020% (P <0.05) - (P <0.001), 0.11 ± 0.050% (P <0.001), and 0.11 ± 0.039% (P <0.1), respectively. The most abundant is Offspring used in recent years by the bulls Jupiter 27640964506 (64 daughters), Campino 112825601 (84 daughters) and Kadisko 579904182 (65 daughters). It is noteworthy that in comparison with the above the milk production for 305 days of the first lactation was in the daughters of the bulls Erik 348025783 (6508 ± 259.7 kg) and Jansker 345199616 (6497 ± 184.6 kg). The daughters of the bull S.S.Khoma 399264 KKG-1314 (4.06 ± 0.050%) differed in the high fat content of milk with comparatively low milk yields. Analysis of the exteriors of cows of daughters of different bulls attests to a certain degree of intergroup differentiation in these characters of the cows in question. The largest and tallest are the daughters of the bulls of the Holstein breed and the golshtinized type. According to some measurements, cows of golshtinized type do not even achieve standards for cows of fatty type, which are much lower. The daughters of the bull of the Holstein breed Erica 248025783, being large and tall among the cows of the groups under analysis, satisfied the standard Southern intra-pore type of the Ukrainian black-ripened milk breed only by measuring the breadth of the chest (42.5 ± 0.75 cm). The daughters of the bulls SSHouma 399264 KKG-1314 and Dragomir 113021400 almost satisfied the standard of the gholshtinized type of the Ukrainian red dairy breed only in the area of ​​the pastern (18.6 ± 0.17 and 18.5 ± 0.13 cm). Intergroup differentiation of half-sisters after the father, in many cases proved to be significant and highly reliable. Bulls that were used in the herd belong to the lines and related groups of Ukrainian red and black-and-white dairy breeds with the numerical advantage of breeding groups of golshtinized type. Among the compared groups, the largest number of daughters were the producers of the Validian 1650414 group (166 head), Starbuck 352790 (114 goals), Chifa 1427381 (92 votes) and Kevelye 1620273 (83 votes). The highest milk productivity for the first and subsequent lactation with uniform growth was found in the cows of related groups of Holstein-type Maple 1430145, Olivishna 1491007, Starbak 352790 and Kevelie 1620273. The cows of the related groups Eliveyshna 1491007 and Kevelie 1620273 are the fastest-growing among the cows of the registered lines and related groups. Low among the cows of the registered lines and related groups, the cows of the fat-milk type of the related group by bay window 17021 differed in milk productivity. Conclusion. The phenotypic variability of the selected economically useful traits of herd cows is largely determined by the influence of genetic factors, which makes it possible to expect a very significant effectiveness and efficiency of breeding in the herd. The origin of the father results in 7-61%, and belonging to the line or related group of 3-51% of the total phenotypic variability of the characteristics considered.

scholarly journals Productivity of fi rst-calf cows of different sire lines

2019 ◽  
Vol 49 (4) ◽  
pp. 58-64
Author(s):  
A. G. Kolchev
Keyword(s):  
Protein Content ◽  
Milk Yield ◽  
Lactation Period ◽  
Milk Productivity ◽  
Black And White ◽  
Holstein Breed ◽  
White Breed ◽  
High Level ◽  
Daily Milk Yield ◽  
Daily Milk

The results of the study of milk productivity and lactation rates of fi rst-calf cows are presented. The research into fi rst-calf cows of black-andwhite Holstein breed, belonging to sire lines of Wis Ideal 1013415 and Refl ection Sovereign 198998 was conducted in 2018 in Novosibirsk region. The number of cows under study was 64, the period of the study covered 305 days of lactation. Monitoring of milk production, milk fl ow intensity, fat and protein content was carried out monthly. The research materials were analyzed for groups of cows depending on their sire line and productivity for single and daily milk yield, fat and protein content, and dynamics of milk ejection for the fi rst 3 minutes of milking. The highest daily milk yield in both lines was observed in the second month of lactation. In the fourth and fi fth months of lactation, the average daily milk yield of Refl ection Sovereign cows was signifi cantly higher (р < 0.001) than that of their peers of the Vis Ideal line, by 1.3 kg. During the lactation period, the productivity of the Vis Ideal and Refl ection Sovereign cows was almost the same: milk yield – 8296 and 8220 kg, fat content – 4.02 and 4.06%, protein – 3.36 and 3.35% and milk fl ow intensity – 2.70 and 2.78 kg/min, respectively. In the second and third months of lactation, cows of both lines had a decrease in the content of fat, protein and intensity of milk fl ow with a gradual increase in these indices in the fourth and fi fth months of lactation. First-calf cows of the black-and-white breed of Canadian selection of different sire lines showed a high level of milk productivity and proved to be suitable for further breeding work.

scholarly journals Reproductive qualities and milk productivity of black-and-white cows depending on sire lineage

2020 ◽  
Vol 50 (5) ◽  
pp. 47-55
Author(s):  
S. L. Belozertseva ◽  
L. L. Petrukhina
Keyword(s):  
Milk Yield ◽  
Research Work ◽  
Live Weight ◽  
Reproductive Capacity ◽  
Calving Interval ◽  
Milk Productivity ◽  
Black And White ◽  
Service Period ◽  
Significant Difference

The paper presents the results of studying the effect of sire lineage on reproductive qualities and milk yield of cows. The study was carried out inIrkutskregion on a herd of Holsteinized black-andwhite cattle of Pribaikalsky type. The analysis of the main characteristics of reproductive capacity of herd cows on a farm was performed during 2013–2018. The material of the research work was based on the informational database of animals from the program of breeding register Selex. Cows were divided according to sire lineage and milk productivity into five groups by the level of milk yield: from 5000 to6500 kg, 6501-8000, 8001-9500, 9501-11000 and more than11001 kg. Successful insemination of heifers took place at the age of 15.7-16.6 months with the live weight of more than400 kg, which corresponds to zootechnical standards. The earliest (15.7 months) insemination was in heifers of Reflection Sovereign sire line, the age of first calving was 753 days with the live weight of561 kg. The latest (498 days) successful insemination was observed in heifers of Montvik Chieftain bull line with the live weight of498 kg. Cows of Sealing Trygen Rocket (8766 kg) and Reflection Sovereign (8704 kg) sire lines had the highest milk productivity with a significant difference (p ≥ 0.90). The cows of these lines had the longest service period (164 and 179 days), as well as the length of the calving interval (445 and 458 days), respectively. The coefficient of reproductive capacity of cows of different sire lines ranged from 0.80 to 0.88, which is a low indicator.

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