THE GROWTH OF BLACK-AND-WHITE BREED HEIFERS, DEPENDING ON THE METHOD OF CULTIVATION
DOI:
https://doi.org/10.52269/22266070_2023_2_156Keywords:
cultivation methods, live weight gains, preservation, black-and-white breed heifers, content methods, individual cellsAbstract
Studies have been conducted, the direction to study the growth of calves of a black-and-white breed, depending on the methods of cultivation. For the first time, individual cages were used on the farm to raise calves in a cold room. The calves were kept in individual cages from birth until the age of 3 months, then the calves were transferred to group maintenance. Raising calves in individual cages helps to increase the safety and growth of young animals. Allows to avoid to some extent contacts with conditionally pathogenic microflora, helps to increase the body's resistance to the effects of adverse environmental factors, reduce morbidity by 10%, increase the average daily gain by 22%, live weight by 6.1% in comparison with animals contained in the group method. With age, the difference in the indicators of the live weight of heifers became more and more distinct. Heifers of the individual method of cultivation at the age of 2 months outnumbered heifers of the group method of cultivation by 4.13 kg, or 5.3%, at the age of 6 months – by 9.95 kg, or 6.2%, and at the age of 12 months by 18.6 kg, or 6.4%. It is characteristic that heifers grown during the dairy period in individual cells retain an increased growth rate in subsequent age periods.
