The efficiency of Stavropol breed ewes crossing with crossbred rams(? Kalmyk fat-tailed+ ? Dorper)

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

doi:10.28983/asj.y2021i1pp60-64

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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).…”

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%