Microstructure of muscle tissue and its connection with slaughter and meat qualities of young rams of different genotype

Pogodaev, V. A.; Aduchiev, Bator; Сергеева, Н. В.

doi:10.1088/1755-1315/403/1/012111

Cited by 5 publications

(3 citation statements)

References 7 publications

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“…In the Republic of Kalmykia, there are pedigree farms of fine-fleece sheep known in Russia and abroad, and sheep breeding for meat is also well developed (Pogodaev et al, 2017a). The quality of sheep breeding products of these sheep has not been studied enough, and research at the microstructural level is practically completely absent, although sheep breeding in this direction plays a decisive role in providing the population of certain regions with good quality lamb and can provide valuable raw materials for the fur-coat industry in the form of sheepskins, from which high-quality fur semi-finished products (Pogodaev et al, 2019). The issues of expanding the range of semi-finished fur products of a higher quality level must be addressed in conjunction with the problems of improving the quality of raw materials (Dmitrik et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

The Dorper breed as a stage in the sustainable development of the agroindustry

Pogodaev,

Parzhanov,

Azhimetov

et al. 2023

Braz. J. Biol.

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The economic condition, national economic significance and prospects for the development of sheep breeding in our country directly depend on the meat productivity of sheep. The purpose of our research was to study the qualitative indicators of sheepskins and the histological structure of the skin of Kalmyk fat-tailed rams and crossbreeds obtained on the basis of crossing of Kalmyk fat-tailed ewes with Dorper rams. The work was carried out in LLC “Agrofirma Aduchi”, Republic of Kalmykia. It was found that the coarser wool of the rams of group I was 4.7 microns or 12.9%, in contrast to the peers of group II. The control animals have 40 quality wool, and the experimental ones - 36, that is, the wool of hybrid young animals is thinner by two whole qualities, which is a very good indicator for the textile industry. The fineness of the awn was thicker in purebred rams by 8.5%, the fineness of transitional hair and fluff by 17.8%, in contrast to hybrid young. In the study of the histological parameters of the skin, it was revealed that the rams of group I had 352.57 µm thicker skin (14.52%) in comparison with their peers in group II. In this case, the thickness of the layers of the total thickness of the skin in animals of group I is: epidermis - 0.8%, pilar - 69.8%, reticular - 29.4%; Group II - epidermis - 1.2%, pilar - 60.5%, reticular - 38.3%. The densest epidermis was found in crossbred young animals of group II. Their superiority in this indicator over their peers in the control group was 6.12 microns or 27.7%. This is due to the fact that in animals of the meat direction, the epidermal part (flesh) is thicker. Crossbred rams have a larger area of sheepskins, the skin is more elastic, durable and less thick, such sheepskins are first-class raw materials for the industrial production of fur products. The density of the coat (the ratio of WF / PF) in crossbred rams is greater than that of purebred peers.

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Section: Introductionmentioning

confidence: 99%

The Dorper breed as a stage in the sustainable development of the agroindustry

Pogodaev,

Parzhanov,

Azhimetov

et al. 2023

Braz. J. Biol.

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“…The use of new methods based on DNA technology, along with other innovations allows to make sheep farming modern industry competitive and cost-effective [7][8].…”

Section: Introductionmentioning

confidence: 99%

Features of polymorphism of calpastatin and somatotropin genes in young sheep, obtained from crossing ewes of Kalmyk fat-rumped sheeps and dorper rams

et al. 2020

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The article presents the study of polymorphism of the CAST and GH genes, which determine the features of the manifestation of the productive and biological characteristics of sheep with ½ Kalmyk + ½ Dorper blood system. Calpastatin gene polymorphism represented by alleles M and N, whose frequency was 0,65 and 0,35; genotypes MM, MN – 30 and 70% accordingly. The desired NN genotype has not been identified. A relatively uniform incidence of allele N (0,35) CAST gene and B (0,40) GH was established, what contributed to an almost equal distribution of allele frequencies М (0,65) and А (0,60) genes of calpastatin and somatotropin accordingly. The frequency of heterozygous genotypes occurrence by CAST gene composed 0,7. By GH gene the following distribution of genotype frequencies is observed. Frequency of occurrence homozygous АА and heterozygous AB genotypes was equal to and is 0,4, wherein the frequency of occurrence advised homozygous ВВ genotype was 0,2. Among the animals studied, sheep with a complex genotype are most common CASTMN GHAB (40 %). The amount of percent CASTMM GHAA and CASTMN GHAA is in 22,2%. 10% is for genotypes CASTMM GHBB and CASTMN GHBB.

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“…From literary sources, most authors believe that only with optimal feeding the reproductive qualities of sheep-producers are maximally manifested [13][14][15][16]. When overfeeding, underfeeding or feeding defective diets for energy, protein, mineral and vitamin nutrition, all physiological and reproductive processes in the animal organism decrease [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Influence of feed additive from secondary raw materials of starch-treacle production on sheep-producers productivity

et al. 2020

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Introduction to the diets of sheep-producers of wool (Jalgin merino) and meat-wool directions (Russian meat merino) productivity in the non-breeding and breeding period of the feed additive «corn Gluten» in the amount of 28 and 56 and 28 and 66 g per unit per day contributes to an increase in crude and digestible protein by 5,0 and 10,0 %, lysine by 1,52 and 3,0 %, methionine with cystine – by 5,2 and 12,7 %. In addition, the digestibility of dry matter of the diet (in the non-breeding period) is significantly increased by 3,85-6,74%, by 13,4-15,11% – raw protein, by 3,19-5,03% – raw fat, by 5,92-7,21% – raw fiber, as well as nitrogen-free extractive fraction – by 1,90-3,52%. Feed additive «corn Gluten» promotes a significant increase in the volume of ejaculate in breeding period by 2,45,7% and 2,8-7,0%, sperm activity and an indicator of resistance to 0,3-0,6 and 0,5-0,6 points and 450-800 units, sperm concentration – by 1,7-3,0 and 1,7-3,5 %, ewes’ fertility – by 3,0-5,0 and 2,0-3,0 %. The additional income from the sale of sperm products with an increase in the protein level in the diets of sheep-producers Jalgin merino and Russian meat merino by 5% is 3,63-4,32, and by 10 % – 8,20-10,26 thousand rubles.

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Microstructure of muscle tissue and its connection with slaughter and meat qualities of young rams of different genotype

Cited by 5 publications

References 7 publications

The Dorper breed as a stage in the sustainable development of the agroindustry

The Dorper breed as a stage in the sustainable development of the agroindustry

Features of polymorphism of calpastatin and somatotropin genes in young sheep, obtained from crossing ewes of Kalmyk fat-rumped sheeps and dorper rams

Influence of feed additive from secondary raw materials of starch-treacle production on sheep-producers productivity

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