Improvement of Meat Qualities of Kazakh Meat-Wool Semi-Fine Sheep by Using the Romney-Marsh Breed

Islamov, E.; Kulmanova, Gulzhan; Kulataev, B.; Bekbaeva, D.; Darkenbayuly, D.; Kulemetova, P.

doi:10.31588/2413-4201-1883-248-4-78-81

Cited by 2 publications

(7 citation statements)

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“…Violation of these conditions causes a change in the ratio of these processes, which ultimately negatively affects the growth of wool and its quality. The latter, as is known, depends on many factors, which, according to the nature of their impact, can be divided into selection and technological [7,8].…”

Section: Resultsmentioning

confidence: 99%

“…At the present stage of livestock farming, directed selection, based on knowledge of the patterns of inheritance and variability of quantitative traits under different methods of breeding selection, is of decisive importance [1,2]. The study of the inheritance of traits makes it possible to predict with a high degree of accuracy the effectiveness of certain breeding techniques and create optimal programs for individual herds and entire breeds [3,4].…”

Section: Introductionmentioning

confidence: 99%

“…The market conditions for sheep products dictate the need for scientific support for the production of lamb, wool and sheepskin. And they are determined by methods of breeding work, technological methods and organizational and economic measures aimed at the effective, rational and sustainable development of the industry [5,6].…”

Section: Introductionmentioning

confidence: 99%

“…Of significant importance in breeding work is the study of the relationship between individual selection traits, which make it possible to assess in what direction other productive traits associated with them will change [7,8].…”

Section: Introductionmentioning

confidence: 99%

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Features of Wool Qualities and Formation of Skin Cover of Young Sheep of the South Kazakh Merino Breed in Zhambyl Region Conditions

Islamov,

Kulmanova,

Kulatayev

et al. 2023

Izdenister natigeler

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Until 2030, 17 key areas were selected, the implementation of which could potentially lead the country to the sustainable development of all major spheres of life and the solution of global problems affecting every person in this world. The article reflects and presents scientific research data, objective characteristics of wool qualities and age-related changes signs of the structure of the skin of young South Kazakh merino sheep, as well as studies of the morphological parameters of the skin tissue in the age aspect (from birth to 18 months), and an analysis of their connection with the commercial properties and quality of the semi-finished product obtained from sheep of this breed is given. Productive qualities were studied in a flock of sheep of the South Kazakh Merino breed in “Batay-Shu” LLP. Sheep have a high live weight, shearing and yield of pure wool; rams have a fairly high live weight for the breed; component depending on age from 100-106 kg, and high wool productivity both in physical weight and in washed fiber - 10.3-6.6 kg, with an average output of washed wool of 64.5% thickness, with corresponding development epidermis (0.97-1.3% of the total skin thickness), a well-developed pilar layer (up to 67.7% of the total skin thickness) and relatively weak development of the reticular layer (about 33% of the total skin thickness). The density of hair follicles per 1 mm2 at 18 months of age is 52-60 units, and the secondary follicles/ primary follicles ratio is 12.17-12.77. After weaning and up to 7.5 months, buck lambs experience a noticeable increase in skin within 200 μm. During the same period, a slight increase in skin tissue occurs in ewe hoggs.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Features of Wool Qualities and Formation of Skin Cover of Young Sheep of the South Kazakh Merino Breed in Zhambyl Region Conditions

Islamov,

Kulmanova,

Kulatayev

et al. 2023

Izdenister natigeler

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“…In bulls from a heterogeneous selection of parents with r as up to 0.267, there is 7.2% more adipose tissue in the body, including 7.8% more internal tissue, and the relative weight of bones is 0.8 points higher. For sheep of the Kazakh meatwool semi-fine-fleeced breed, the erythrocyte antigen Ab is informative, which correlates with a large shearing of wool (Islamov et. al., 2020).…”

Section: Introductionmentioning

confidence: 99%

Growth and meat productivity of bulls depending on the similarity of their blood group B antigens with mothers

Ugnivenko¹,

Natalych²

2023

Animal Science and Food Technology

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Various molecular genetic markers are used to comprehensively assess the breeding value of animals based on genetic information. Therefore, an important place in the qualitative improvement of beef cattle breeds is occupied by the improvement of methods of animal selection using the immunogenetic characteristics of their blood. The purpose of the study is to determine the dependence of weight growth and meat productivity of animals of the Ukrainian beef breed on the number of similar antigenic factors of the B blood group system in them and their mothers. After weaning, the first group contained bulls (n = 12) who had similar antigens from 2 to 6 inclusive. The second group (n = 15) – from 7 to 13. When studying the features of weight gain and meat productivity of bulls, it was proved that the similarity in the B system of cattle blood groups between mother and offspring is informative regarding the homo- or heterozygosity of the latter. It was found that animals with a lower amount of antigens similar to the mother outperformed (by 9.3%) homozygous peers in the test from 8 to 18 months of age in terms of average daily weight gain and had a higher live weight (by 8.0%) at 18 months, indicating their better early maturity. With lower antigenic similarity between mother and offspring, the expression of meat forms is 7.8% and 6.0% higher, respectively, at 15 and 18 months of age.After slaughter, there is no significant difference between homozygous and heterozygous bulls in terms of meat productivity, including pre-slaughter live and slaughter weight. When selecting offsprings with fewer antigens similar to their mother, they tend to reduce the slaughter yield (by 0.5 points) and the muscle content in carcasses (by 3.2%). The selection of bulls of Ukrainian beef breed with a smaller number of antigens of the B blood group system, similar to mothers, will help to improve their weight growth and the expression of meat forms, and will allow predicting future meat productivity

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Improvement of Meat Qualities of Kazakh Meat-Wool Semi-Fine Sheep by Using the Romney-Marsh Breed

Cited by 2 publications

References 0 publications

Features of Wool Qualities and Formation of Skin Cover of Young Sheep of the South Kazakh Merino Breed in Zhambyl Region Conditions

Features of Wool Qualities and Formation of Skin Cover of Young Sheep of the South Kazakh Merino Breed in Zhambyl Region Conditions

Growth and meat productivity of bulls depending on the similarity of their blood group B antigens with mothers

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