GROWTH OF INDIVIDUAL ORGANS AND TISSUES IN SIMMENTAL BULL CALVES WITH DIFFERENT FEEDING LEVELS
DOI:
https://doi.org/10.25930/2687-1254/010.4.15.2022Keywords:
cattle, Simmental breed, feeding level, meat production, production of meat, growth performance, pulp, bones, calorific value, skinAbstract
Due to the changing economic situation in the world and domestic market,
technologies that increase the effectiveness of cattle breeding and predetermine a more intensive and rational use of labor and feed resources are becoming more and more in demand. It is
known that the growth and development of young animals depends greatly on the feeding level, especially in cattle of combined breeds, including Simmental cattle. The purpose of the
research is to study the growth of individual organs and tissues and the intensity of growth in
Simmental bull calves with different feeding levels. The research was carried out in the agricultural production co-operative breeding farm “Zaria-1” in the Karachay-Cherkess Republic.
The study of meat productivity was carried out according to the accepted methodology of scientific research in animal husbandry. As a result of the analysis of the conducted work, it was
found that the growth rates and the development level of organs and tissues in young animals
of the control group (with an economic feeding level) at all age periods are less intense than
in the young animals of the experimental group (with an increased feeding level). The skins of
the young animals of the experimental group were heavier by 19 %. During the study of the
chemical composition, it was found that the average daily protein deposition in meat and fat
from birth to 18 months in bull calves of the second group was 8,8 % higher in protein and
64% higher in fat (Р <0,05). The yield of meat and fat per 100 kg of live weight in young animals of group I at 7 months of age was 30 % higher and at 18 months 14 % higher than in
young bullocks of group II. Thus, as a result of our research, we have established a positive
effect of an increased feeding level on the growth of individual organs and tissues; however,
the economic feeding level increases the compensatory properties of the body of bull calves at
the age from birth to six months.
