N. A. Radzhabov, P. M. Klenovitskiy, B. S. Iolchiev
Federal Scientific Center of Animal Husbandry –Ernst All-Russian Research Institute of Animal Husbandry, pos. Dubrovitsy, 60, Podol’skii r-n, Moskovskaya obl., 142132, Russian Federation
Abstract. The studies analyzed the influence of crossbreeding of native Tajikistan sheep breeds with a hybrid of argali and Romanov sheep, carrying 3/4 of Romanov sheep’s blood and 1/4 of argali’s blood (APF2) on the wool cut, ratio and thickness of wool fibres of different types. The work was performed in 2016–2018. Hissar (H), Tajik mutton-fat-wool (TMFW) and Pamir fine-fleece (PFF) ewes were inseminated with APF2 ram sperm. We obtained and investigated 7, 11, and 5 hybrid haggerels, respectively. As a control, we used 10 purebred peers of each breed. The wool was sampled from one-year-old haggerels and was analyzed in accordance with GOST 17514-93. The similarity of coat characteristics was evaluated using the SSPS software by the Euclidean distance between characters. The largest wool cut (2.67 kg) was registered for TMFW x APF2 hybrids; the smallest amount of wool (1.67 kg) was registered for purebred Hissar sheep. The share of downy fibres and their thickness in PFF haggerels was (98.53 ± 0.06)% and (20.81 ± 0.23) um, respectively; in TMFW haggerels, it was (65.10 ± 0.55)% and (28.11 ± 0.42) um, respectively; in H haggerels, it was (49.05 ± 0.41)% and (27.63 ± 0.14) um, respectively. The values of these indicators for PFF hybrids were (92.31 ± 0.13)% and (21.90 ± 0.24) um; for TMFW hybrids, they were (64.86 ± 0.56)% and (26.46 ± 0.27) um, respectively; for H hybrids, they were (49.76 ± 0.40)% and (24.97 ± 0.15) um, respectively. Differences between purebred animals, between hybrids, as well as between hybrids and APF2 ram were significant. Purebred and hybrid sheep, having a common maternal basis, formed independent clusters by the wool fineness: H-ARH, PFF-ARPFF and TMFW-ARTMFW. This indicates a greater influence of maternal forms on the value of this indicator.
Keywords: argali (Ovis ammon); hybrids; cluster analysis; wool cut; sheep; types of wool fibers.
Author Details: N. A. Radzhabov, Cand. Sc. (Agr.), doctoral student; P. M. Klenovitskiy, D. Sc. (Biol.), leading research fellow (e-mail: Этот адрес электронной почты защищён от спам-ботов. У вас должен быть включен JavaScript для просмотра.); B. S. Iolchiev, D. Sc. (Biol.), leading research fellow.
For citation: Radzhabov NA, Klenovitskiy PM, Iolchiev BS. [Features of the coat of native Tajik sheep and their descendants from the argali and Romanov sheep hybrid]. 2020;34(3):57-61. Russian. doi: 10.24411/0235-2451-2020-10311.