Features of the Growth of Half-blooded Young Animals With Reciprocal Crosses of Kalmyk and Mondolong Breeds Cattle
Year: 2022
Type: article
Abstract: The purpose of the research is to improve the fattening and meat qualities of Kalmyk cattle by reproductive crossing with the Mandolong breed. The objectives of the research are to study the effect of reciprocal crossing of animals of the Kalmyk and Mandolong breeds on the intensity of weight growth of crossbred young animals of the first genera-tion. The Kalmyk breed has a number of valuable economic and useful features. At the same time, the breed does not fully meet modern market requirements. Increased ability to fat deposition at an early age, low milk production of cows, a relatively short period of intensive growth and insufficient muscularity of the posterior third of the trunk reduc-es fattening and meat qualities. To improve these characteristics, in 2010 the Mandolong breed was imported from Australia, which is characterized by large size, precocity, high growth rate, excellent meat qualities. The problem with crossing breeds is that the Mandolong breed surpasses the Kalmyk breed in live weight of cows by 177 kg (37.8%), producing bulls by 250-300 kg (33.3-41.2%). Studies have shown that at birth, crossbred bulls from Mandolong cows outperformed their peers from the Kalmyk cows by 3.6 kg (10.1%), heifers, respectively, by 3.9 kg (12.9%). In the process of growing, the situation changed and at the age of 18 months, on the contrary, bulls from mothers of the Kalmyk breed outperformed their peers of group III by 25.6 kg (4.7%), heifers, respectively, by 16.1 kg (3.7%). Thus, for further breeding, it is preferable to use a variant of crossing Kalmyk cows with Mandolong bulls.
Institution: Samara State Agrarian University
Language: English
Subfield: Genetics
Domain: Life Sciences
SDG: Zero hunger
Open Access status: hybrid
OpenAlex ID: W4313229366