UDC 636.32/.38
DOI 10.36461/NP.2023.66.2.018
LIVE WEIGHT AND EXTERIOR FEATURES OF CROSSBRED YOUNG ANIMALS OF THE KALMYK FAT-TAILED BREED WITH THE CHAROLLAIS STUD RAMS
I.S. Rubtsova1, Postgraduate; S.O. Chylbak-ool1, Candidate of Biological Sciences; E.V. Pakhomova1, Candidate of Agricultural Sciences; A.N. Arilov2, Doctor of Agricultural Sciences
1Federal State Budgetary Educational Institution of Higher Education "Russian State Agrarian University - Moscow Timiryazev Agricultural Academy", Moscow, Russia, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
2Kalmyk Research Institute named after M.B. Narmaev – branch of "Caspian Agrarian Federal Scientific Center of Russian Academy of Sciences", Elista, Russia
The article analyzes the data on the results of crossing of Kalmyk fat-tailed ewes with stud rams of the Charollais breed in the conditions of the Yashkulsky District of the Republic of Kalmykia. The exterior measurements were evaluated and the body conformation indices of the crossbred young animals were calculated. The work was carried out under the conditions of the experimental farm "ARL" of the Kalmyk Research Institute of Agriculture named after M.B. Narmaev of the Republic of Kalmykia. The animals were kept under the same housing and feeding conditions. The data obtained indicate that the young animals resulting from the crossing of the Kalmyk fat-tailed breed with the Charolais rams are characterized by a harmonious conformation: the ewes were superior to the rams in the indices of long legs, metacarpal circumference, forehead width and hook bone width by 3.0; 0.6; 10.1; 2.3 % respectively. The body indices of the rams were 10.6, 25.2, 2.5, 0.6, and 2.8 % higher for the other indicators, namely chest, pelvis-chest, massiveness, overgrowth and large head, respectively. In terms of live weight, absolute and average daily gain, the rams outperformed the sheep by 4.5 kg or 12.4 % and 38 g or 12.6 % respectively. As far as the growth intensity of the crossbreed young animals of the two groups is concerned, the indicators were approximately at the same level with 157.3-159.5 %, but the rams were 2.2 % higher. The work was carried out within the framework of the topic "Biotechnological methods of reproduction and genomic technologies in the selection of farm animals and the preservation of the gene pool of small breeds" as part of the project "Scientific and Technological Frontiers" under the "Priority 2030" program.
Keywords: sheep farming, Kalmyk fat-tailed breed, exterior, live weight, Charollais.
