The research explores the qualitative parameters of sheepskin and histological structure of Kalmyk lambs skin and cross breeds obtained when crossing Kalmyklambs and Dorper sheepskinned lambs. Scientific and production experience was conducted at “Agrofirma Aduciya” enterprise in the Republicof Kalmykiain 2018. The authors explored sheepskin commodity properties at the histological level was conducted on the lambs after fattening at the age of 6 months. According to the area of sheep skin, the crossbred lambs of the 2nd (experimental) group surpassed the lambs od the 1st (control) group by 11.08 dm2 (or 11.8%). This difference is explained by higher fattening qualities of the weighed young stock, which have shorter length and wider width of sheepskin. This is explained by the blackness of the animal’s body after fattening. The lambs of the control group had more developed epidermis, a reticular layer and a larger skin thickness, which is characteristic of rough-wool sheep breeds. The lambs of the experimental group have more developed pilar layer, which is typical for the cattle with semi-fine and thin woolen assortments. The density of wool follicles in the crossbred lambs was 3.3% higher in comparison with the control group lambs; the density index (the ratio of secondary to primary follicles) was 12.7% higher. The lambs of the control group have 44th quality wool (39.65 mkm), it has down, crossing hair, beard hair, i.e. rough wool; the crossing lambs of the experimental group have 56th quality wool (29.25 µm), i.e. semi-fine wool. The sheepskin products with softer pile will cost higher.
They have been studied the commercial properties of sheepskins and the histological structure of the Kalmyk breed young rams skin and crossbreds (1/2 Kalmyk fat-rumped breed × 1/2 Dorper). It was found out that the weight of fresh sheepskins in the sheep young of the 1st group was larger than that in herd mates of the 2nd group by 1.0 kg, or 34.5% (P> 0.999). A large live weight influenced the large area of the skin in the second group of young animals, and the length of the wool in the experimental group, which turned out to be shorter, influenced its smaller sheepskin weight. The crossed animals got on the basis of the crossing of the Kalmyk fat-rumped ewes with the Dorper breed rams have the best quality indices of sheepskins and the best histological structure of the skin. In hybrid animals, a more elastic, firmer and less thick skin is 14.52%, due to a greater epidermal thickness of 27.7% and a denser reticular layer of 13.7%. The wool cover (ratio SF / PF) in crossbred young rams is 10.47% thicker in comparison with herd mates, at white color of wool, which corresponds to the technological requirements for the production of high-quality sheepskins.
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