QUALITY INDICATORS OF WOOL CROSSBREDS BRIGHT AKZHAIK MEAT-WOOL BREED DEPENDING FROM THE SELECTION OF PARENTAL PAIRS

2016 ◽  
Vol 1 (2) ◽  
pp. 78-82
Author(s):  
Селионова ◽  
Marina Selionova ◽  
Траисов ◽  
Baluash Traisov ◽  
Баймишев ◽  
...  
Keyword(s):  
Textile Industry ◽  
Live Weight ◽  
Class I ◽  
Wool Production ◽  
Local Type ◽  
Meat Content ◽  
Technical Properties ◽  
One Year ◽  
Age And Sex ◽  
Selection Of

The purpose of the study is improving the wool productivity of sheep of Akzhaik meat-wool breed at the expense of different selections of parents. For research used two variants of selection of parental pairs: Akzhaik meat-wool sheep producing meat-tion type (weight not less than 110 kg, wool production in the original 9.5 kg, wool length of 15.0 cm, fineness of wool 50 quality) were paired with ewes class I and II at the age of 2.5 years is not a local type of herd age and sex depending on the class ewes were divided into two groups of 200 animals each. The same principle was formed the second option of selection of parental pairs. Only were used for mating with avamat-kami class I and II rams-manufacturers of custom herd (live weight 102 kg, wool production in the original 8.24 kg, wool length 15.5 cm, wool fineness 50 quality). The study of wool production and physico-technical properties of the wool yearling bright were carried out using established techniques in research laboratories of wool VNIIOK Stavropol. As a result of the conducted researches it is established that the increase in meat content of Akzhaik meat-wool sheep has no adverse effects on wool productivity bright. So the hair is bright at one year of age was typical for crossbreeding in fineness and the staple well-adjusted. Significant differences in physico-technical properties between the compared groups was not available and the wool meet the requirements of the textile industry for a homogenous semi-fine wool.

scholarly journals Effect of age and sex on meat quality and quantity of Black Bengal goat

2016 ◽  
Vol 45 (1) ◽  
pp. 19-24
Author(s):  
S Mehjabin ◽  
MR Amin ◽  
MO Faruque ◽  
MB Sarker
Keyword(s):  
Meat Quality ◽  
Live Weight ◽  
Carcass Weight ◽  
Age Group ◽  
Extract Content ◽  
Significant Difference ◽  
Dressing Percentage ◽  
One Year ◽  
Black Bengal Goat ◽  
Age And Sex

The present research was conducted to investigate the effect of sex and age of goats on live weight, hot carcass weight, dressing percentage, chemical composition and pH of meat obtained from Black Bengal goat. Fifty goats of different age (up to 3 years) and sex groups (buck, castrated male, doe and kids) were slaughtered. After pre-slaughter weighing goats were sacrificed using the approved “Halal” method. The average live weight of doe up to one, two and three years of age were 12.51, 14.35 and 16.35 kg and of buck were 10.57, 19.29 and 37.05 kg, respectively. There were significant differences between the live weight of doe and buck at different age group. Hot carcass weight of doe and buck differ significantly among the different age group also differ significantly between the different sex group’s goat. The mean hot carcass weight of castrated male at one year of age was 7.82 kg and was observed highest in castrated male than doe and buck. The average dressing percentage of doe, buck and castrated male at one year of age was 42.02, 39.01 and 43.56%, respectively but the values did not differ significantly. There were no significant differences of DM, moisture and CP content between doe and buck at different age group but significant differences were observed among the different age group of doe and buck. Fat content was significantly different among the different age group of doe and buck. There was significant difference of ash among the different age group of doe and buck. The pH values of goat meat did not differ significantly among the different age and sex of goats. From this study, it was concluded that the meat quantity in terms of hot carcass weight and dressing percentage were higher when castrated male slaughter within one year whereas maximum hot carcass weight was obtained when buck slaughter at the age 2-3 years and meat quality in terms of crude protein content was higher in meat obtained from buck and ether extract content was lower in buck meat when slaughter within one year.Bang. J. Anim. Sci. 2016. 45 (1): 19-24

SHAPING THE MEAT PRODUCTIVITY OF MEAT AND WOOL SHEEP OF DIFFERENT GENOTYPES

2021 ◽  
Vol 1 (1) ◽  
pp. 66-71
Keyword(s):  
Muscle Tissue ◽  
Live Weight ◽  
Chemical Components ◽  
Feeding Period ◽  
Meat Content ◽  
Quantitative And Qualitative Traits ◽  
Calcium And Phosphorus ◽  
Meat Productivity ◽  
Selection Of

The article presents the results of the control slaughter of 8 months. rams after feeding with feeding, obtained from the selection of semi-fine-fleece queens of Akzhaik meat and wool sheep with producers of Akzhaik and Kuibyshev breeds. Studies have shown that the KB x AKMSh crosses before feeding with feeding had a better live weight than purebred peers. During the feeding period with feeding in terms of the rate of gain in live weight, the Kuibyshev rams' hybrids retained their superiority. Feeding qualities of crossbred animals in the variant of selection of KB x AKMSh in comparison with purebred AKMSh x AKMSh indicates their better use of feed and better live weight. Consideration of the quantitative and qualitative traits of meat productivity in the studied genotypes revealed the superiority of the KB x AKMSh genotype over the AKMSh x AKMSh genotype in terms of fresh carcass weight, slaughter weight, slaughter yield, muscle tissue content in the carcass and meat content coefficient. For all groups, the slaughter yield was 47.8 -48.7%. The meat content coefficient at the control slaughter of young animals at 8 months indicates the influence of producers of all groups, with somewhat better meat and wool rams in Kuibyshev, on improving the meat quality of carcasses. Analysis of the results of studies of the chemical composition of muscle tissue indicates certain differences in the amount of its chemical components in the studied animals, depending on the genotype. The muscle tissue of the KB x AKMSh genotype contained less moisture, but more protein and fat in comparison with the meat of akzhaik purebred animals. There were no significant changes in the amount of ash, calcium and phosphorus in the muscle tissue of young animals of different genotypes. In general, the carcasses of all the rams were well formed and characterized the sheep of the meat and wool direction of productivity with the best slaughter indicators from the producers of the Kuibyshev breed.

scholarly journals Vergleichsuntersuchungen zur Verwendbarkeit des PIGLOG-Ultraschall- Gerätes für die Vorausbestimmung des Muskelfleisch-anteiles bei Sauen im Rahmen der Eigenleistungsprüfung

2000 ◽  
Vol 43 (5) ◽  
pp. 499-506
Author(s):  
F. Rosner ◽  
S. Polten ◽  
M. Wicke
Keyword(s):  
Live Weight ◽  
Ultrasound Measurement ◽  
Calculation Algorithm ◽  
Large White ◽  
Lean Meat ◽  
Meat Content ◽  
Growing Age ◽  
Selection Of

Abstract. Title of the paper: Comparative investigations about the application of ultrasound measurement (PIGLOG) for prediction ofthe lean meat content in gilts Ultrasound based Systems for in vivo estimation of lean meat content were comparatively investigated in 100 gilts (German Landrace, German Large White, Leicoma and F1). Rank correlations increased between ultrasound based estimations of lean meat and carcass Classification with growing age and live weight, respectively. Lean meat content was estimated with the PIGLOG System and the B-mode device with repeatabilites of R2 = 0.40 and R2 = 0.63, respectively. We can not recommend the use of PIGLOG derived estimates of lean meat content in selection of gilts without prior correction of the calculation algorithm in the investigated populations. Our investigations furthermore demonstrated the importance of sufficient training of the persona conducting the measurements.

MODERN CONDITION AND PROSPECTS OF DEVELOPMENT OF THE UKRAINIAN WHITEHEAD BREED

2016 ◽  
Vol 52 ◽  
pp. 194-202
Author(s):  
S. L. Voitenko ◽  
L. V. Vishnevsky
Keyword(s):  
Milk Yield ◽  
Milk Fat ◽  
Objective Assessment ◽  
Live Weight ◽  
Fat Content ◽  
Early Age ◽  
Average Value ◽  
The Future ◽  
Efficiency Of Selection ◽  
Selection Of

The article shows the state of Ukrainian Whiteheaded cattle, which includes distribution of cattle, the number of animals belonging to respective bloodlines, evaluation of young animals with live weight in the process of growing and milk production of cows during the first lactation. It reflects the historic development of the breed when it was colonism whiteheaded cattle, which turned into the original breed, undergone a significant expansion in livestock and increase of productivity, decreased in the number, was as basis for creation of Ukrainian Black-and-White dairy breed and now bred only in one breeding farm. Visual estimation of animal exterior showed good development of cows and calves and their belonging to the dairy type. In the vast majority the cows of the herd have a black suit, a white head with " glasses" around the eyes, white belly, udder, lower legs and brush of the tail. The youngsters aren’t consolidated by the exterior, and among them there are animals which are not typical for Ukrainian Whiteheaded breed. The young animals have some lag in live weight behind the breed standard [12] to 7 months’ age with exceeding of this trait in certain periods quite significantly in the future. It was established that selection of heifers on live weight will be effective at the early age (1-5 months), given the coefficient of variation of live weight – 22,63-30,21% and will not have a significant influence in the future. Milk yields of first-calf heifers vary considerably depending on the origin. The milk yield of first-calf heifers in the herd was 4238,5 kg on average, the heifers belonging to Mart 171 and Ozon 417 bloodlines had the best milk performance – 4483,1 and 4254,9 kg accordingly. The most aligned milk yield during the first lactation was in the cows belonging to Ozon 417 bloodline, the limits of the trait are 4128,5-4327,4 kg with the average value by the line 4254,9 kg. In contrast, the first-calf heifers of Ryezvyi 33 bloodline with average milk yield 4048,9 kg had limits of the trait 2199,3-4736,1 kg. Even greater range in cows’ milk yield during the first lactation R= 4939 kg (limits 1687 – 6626 kg) is characterized for the herd in general, it shows, on the one hand, the possibility of qualitative improvement of cows’ productivity due to selection on the investigated trait and lack of selection in the herd on the other hand. It was established that daughters of bull Chardash belonging to Ryezvyi 33 bloodline produced 4736,1 kg of milk for 305 days of the first lactation with fat content 3,6%, whereas Zlak’s descendants of the same line were characterized by the lowest milk yield for the first completed lactation – 2199,3 kg with fat content 3,7% and the average value by the line – 4048,9 kg of milk, fat content 3,6%. Similar variability of first-calf heifers’ milk yields, depending on the origin, is typical for other bloodlines of Ukrainian Whiteheaded breed. To increase milk productivity of Ukrainian Whiteheaded cows is recommended to repeat successful combinations of parental forms, and to preserve the breed – to carry out an objective assessment of animals by a range of traits, given the efficiency of selection of heifers on live weight at early age.

Peculiarities of the juvenile period of the native Chechen genotypes of willow leaf pear (Pyrus salicifolia Pall.)

2020 ◽  
Vol 62 ◽  
pp. 32-38
Author(s):  
E. A. Dolmatov ◽  
R. B. Borzayev ◽  
A. N. Shaipov
Keyword(s):  
Chestnut Soil ◽  
Crop Breeding ◽  
Juvenile Period ◽  
Period 2 ◽  
Russian Research Institute ◽  
The Common ◽  
One Year ◽  
First Time ◽  
Selection Of ◽  
Creative Cooperation

The results of the study of the duration of the juvenile period of indigenous Chechen willow leaf pear genotypes (Pyrus salicifolia Pall.) are given in connection with the acceleration of the breeding process and the use of selected forms in pear breeding for high precocity. The studies were carried out in 2016-2019 at OOO “Orchards of Chechnya” in accordance with the Agreement on creative cooperation with the Russian Research Institute of Fruit Crop Breeding. The work was carried out in accordance with generally accepted programs and methods. The objects of the study were one-year and two-year-old pear seedlings obtained from sowing seeds of selected dwarf and low-growing local Chechen forms of willow pear (P. salicifolia Pall.), laying fruit buds on annual growths and seedlings of Caucasian pear (P. caucasica Fed.), 20 500 pcs. of each specie. The aim of the research was to study the potential of precocity of willow pear seedlings and to reveal of selected forms with the greatest degree of this trait. Stratified seeds were sown in the sowing department of the OOO “Orchards of Chechnya” production nursery in April, 2017. The seedlings were grown according to the common technology in dryland conditions on the plot with chestnut soil. The first fl owering of plants was noted in the spring, 2019. As a result of the research, for the first time on a large number of the experimental material it was found that in the off spring of the indigenous Chechen willow leaf pear genotypes, the selection of a little more than 2% of seedlings with a very short juvenile period (2 years) was possible. They are of great interest in accelerating the breeding process and in the selection of new pear varieties with high precocity. 20 willow leaf pear genotypes were selected for the further use in breeding for high precocity and as sources of the trait of short juvenile period.

СОВЕРШЕНСТВОВАНИЕ СТАД СКОТА СИММЕНТАЛЬСКОЙ ПОРОДЫ ПО МОЛОЧНОЙ И МЯСНОЙ ПРОДУКТИВНОСТИ

2020 ◽  
Author(s):  
N.V. SIVKIN ◽  
N.V. STREKOZOV ◽  
V.I. CHINAROV
Keyword(s):  
Milk Yield ◽  
Live Weight ◽  
Breeding Value ◽  
Early Age ◽  
Group I ◽  
Breeding Herd ◽  
Simmental Cattle ◽  
Meat Productivity ◽  
Selection Of ◽  
Meat Type

В симментальской породе предусматривается разведение скота, сбалансировано сочетающего молочную и мясную продуктивность. Однако в практике совершенствования племенных стад в подборах быков доминируют улучшатели удоя, что во многом предопределяет результаты селекции и продуктивный тип животных. Объектом нашего исследования стало стадо чистопородного симментальского скота в условиях стойловой системы беспривязного и привязного содержания коров. Для изучения эффективности использования быков-производителей разного племенного достоинства сформировали 2 опытные группы: I состояла из бычков, полученных от отцов с племенной ценностью (ПЦ) по удою 100 кг и более, а во II с ПЦ от 0 до 100 кг молока. Симментальские бычки, отобранные для контрольного убоя, достигали весовых кондиций 500 кг и более в 17,5 мес при среднесуточном приросте 911 г. При использовании на маточном поголовье быков-производителей с улучшающим эффектом по удою 100 кг и более, их сыновья (I группа), на фоне более высоких суточных приростов (на 30 г) и раннем возрасте достижения живой массы 500 кг (на 18 дней) имели массу и выход туши на 21,4 кг и 2,7 ниже, чем у бычков II группы. При формировании молочно-мясного типа быки-производители с умеренной племенной ценностью по удою обеспечивали получение потомства, сочетающего молочную и мясную продуктивность в экономически значимых пропорциях.The Simmental breed provides for the breeding of cattle that combines milk and meat productivity in a balanced proportion. However, in the practice of improving breeding herds, the selection of bulls is dominated by milk yield improvers, which largely determines the results of selection and the productive type of animals. The object of our research was a breeding herd of purebred Simmental cattle in variety feeding and housing practices. To study the effectiveness of using bulls-producers of different breeding values, 2 experimental groups were formed: I consisted of bulls received from fathers with a breeding value (BV) of milk yield 100 kg or more, and II with a BV from 0 to 100 kg of milk. Simmental bulls selected for control slaughter reached weight standards of 500 kg or more in 17.5 months with an average daily increase of 911 g. When used on breeding of bulls with an improving effect on the yield of 100 kg or more, their sons (group I), against the background of higher daily gains (30 g) and an early age of reaching a live weight of 500 kg (18 days), had a mass and carcass yield of 21.4 kg and 2.7 lower than that of group II bulls. When forming a dairy-meat type, producing bulls with a moderate breeding value for milk yield provided for the production of offspring that combined dairy and meat productivity in economically significant proportions.

Diet selection of sheep: sodium bicarbonate, but not the offering of hay, modifies the effect of urea on diet selection

2002 ◽  
Vol 74 (2) ◽  
pp. 357-367 ◽  
Author(s):  
S. M. James ◽  
I. Kyriazakis ◽  
G. C. Emmans ◽  
B. J. Tolkamp
Keyword(s):  
Sodium Bicarbonate ◽  
Live Weight ◽  
Diet Selection ◽  
Metabolizable Energy ◽  
Fresh Matter ◽  
Total Food Intake ◽  
Period 2 ◽  
Control Food ◽  
Selection Of

AbstractThe hypotheses tested were that the expected preference of sheep for a food with adequate rumen degradable protein (RDP) supplemented with urea would be reduced both by the addition of a buffer (sodium bicarbonate (SB)) and by offering ad libitum access to hay. A control food (C), calculated to be adequate in its ratio of effective RDP to fermentable metabolizable energy (fME), was formulated. Other foods were made by adding 12·5 (U1) or 25 (U2) g urea per kg fresh matter (FM) to C and 20 g SB per kg FM to C, U1and U2. The acid buffering capacity (ABC) of each food was measured in vitro. The experiment consisted of two successive periods, each of 4 weeks. Ninety-eight female, Texel ✕ Greyface sheep were randomly allocated to 14 groups each with seven animals. Groups 1 to 6 were offered one of: C, U2, C + SB, U2+ SB, C with hay or U2with hay throughout the experiment. Groups 7 to 10 were offered the choices of C v. U1or C v. U2, either with or without hay in a change-over design; animals that received hay during period 1 (groups 8 and 10) did not do so during period 2 and vice versa (groups 7 and 9). Groups 11 to 14 (no. = 7) were offered the choices of C v. U1or C v. U2, either with or without SB supplemented to both foods, in a change-over design. Adding either urea, or SB, or both to C had no effects on intake or live-weight gain when offered alone. Both supplements significantly (P 0·001) increased the ABC of food C. Throughout the experiment hay consumption was very low (overall mean: 23 (s.e. 2·5) g hay per sheep day). Offering hay caused no change in the preference for the urea-supplemented foods. Sheep offered the choices C v. U1or C v. U2, with neither hay nor SB, selected 0.466 (s.e. 0·036) and 0.588 (s.e. 0·025) kg/kg total food intake (TFI) of U1and U2respectively. The proportions of the urea-supplemented foods were significantly reduced (P 0.01) by SB supplementation: to 0.348 (s.e.0·045) and 0·406 (s.e.0·059) kg/kg TFI of U1and U2respectively. The effect of SB addition on the diet selection of sheep could be due to its buffering properties. When SB is added to both foods the need for urea to be used as a buffer is reduced with a consequent decrease in the proportion selected as the urea-supplemented food. Effects of diet on buffering may override other diet selection objectives, such as the avoidance of an excess intake of RDP.

A simulation study of open nucleus and closed nucleus breeding systems in a sheep population

1995 ◽  
Vol 60 (1) ◽  
pp. 117-124 ◽  
Author(s):  
J. A. Roden
Keyword(s):  
Genetic Gain ◽  
Live Weight ◽  
Breeding Systems ◽  
Breeding Value ◽  
Linear Unbiased Prediction ◽  
Sheep Population ◽  
Best Linear Unbiased ◽  
Nucleus Breeding ◽  
Open Nucleus ◽  
Selection Of

AbstractStochastic simulation was used to compare the results of alternative breeding systems in a sheep population divided into 10 flocks of 120 ewes. The breeding systems compared were selection within closed flocks (CF), a closed nucleus system (CNS), an open nucleus system (ONS) and open nucleus systems with the selection of nucleus replacements being restricted to either nucleus born males (ONSRm) or nucleus born females (ONSRf). Selection was for a best linear unbiased prediction of breeding value for lamb live weight which had a heritability of 0·17. The open nucleus breeding systems (ONS, ONSRm, ONSRf) resulted in higher rates of genetic gain, more predictable selection responses and lower rates of inbreeding than either the closed nucleus system (CNS) or selection within closed flocks (CF). Initial genetic differences between flocks resulted in higher rates of genetic gain in the nucleus breeding systems due to the use of between flock genetic variance. In the ONS system up to 25% of nucleus sires and approximately 50% of nucleus dams were born in base flocks. Nevertheless if selection of either nucleus sires or dams was restricted to nucleus born animals there was very little change in genetic gain or rate of inbreeding.

A comparison of the Charolais, British Friesian and Hereford breeds as sires of crossbred singlesuckled calves for beef production

1973 ◽  
Vol 17 (3) ◽  
pp. 267-273 ◽  
Author(s):  
R. E. Haycock ◽  
D. A. Stewart
Keyword(s):  
Weight Gain ◽  
Birth Weight ◽  
Live Weight ◽  
The Other ◽  
Cattle Production ◽  
Significant Relationships ◽  
Grazing Period ◽  
Beef Cattle Production ◽  
Breed Crosses ◽  
Selection Of

SUMMARYIn three successive years cows from an Aberdeen Angus cross Shorthorn herd were mated to pedigree Charolais, British Friesian and Hereford bulls. A comparison of the progeny of the three breeds of sire under controlled conditions was therefore possible using a random selection of dams for mating, and identical rearing of the calves. Results for live-weight gain of the suckled progeny were analysed and showed superiority of the Charolais breed over the other two when used in this form of beef cattle production.For birth weights and daily live-weight gains, particularly during the grazing period, the Charolais cross progeny showed superiority over the other two. There was a consistent although not always statistically significant tendency for these differences between the breed crosses to occur in the male calves only, the females showing little difference between breeds. The data also showed highly significant relationships between gestation period and birth weight, both within and between breed crosses.

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