NUTRITIONAL FEEDING ASSESSMENT OF HOLSTEIN DAIRY COWS RATIONS IN LLP “DAIRY FARM "AYNA" OF AKMOLA REGION

Abstract

Dairy cattle of foreign selection with a milk production level of more than 7,000 kg of milk per lactation require an appropriate level of feeding. In this regard, there is a need to revise the feeding standards for dairy cows in accordance with modern
achievements in nutritional science, such as the NRC-Nutrient requirements of dairy cattle, compiled under the guidance of the Dairy Cattle Nutrition Subcommittee of the Animal Nutrition Committee of the Board of the agriculture and national resources of the United States have developed. These standards use the latest advances in the feeding of high productive lactating and dry cows, young cattle, the use of which in the United States of America has now made it possible to achieve more than 10,000 kg per cow. The goal of the research was to study the nutritional value of dairy cows rationsmin the LLP “Dairy Farm “Ayna” and adjust them in accordance with NRC standards. In the rations of high productive cows LLP “Dairy Farm “Ayna”, before adjusting according to NRC standards, there was a situation typical of dairy farms in the Northern region of the Republic of Kazakhstan, namely: low content of crude protein (12-15% DM) and excess of crude fiber (25-40% CB), which was manifested in the incomplete milk productivity of a dairy herd. Increasing the nutritional value of rations for feeding dairy cows according to NRC standards, namely, the content of crude protein from 15.3% DM to 16.6% DM, starch from 19.2% DM to 33% DM, and metabolic energy from 9.83 MJ/kg DM to 10.6 MJ/kg DM, allowed to increase daily milk yield from 19.21 kg/head/day in September 2022 to 28.8 kg/head/day in March 2023. This indicates that adequate provision of dairy cows with basic nutrients during lactation allows the genetic potential of the Holstein breed in available forage and climatic conditions of the northern region of our republic.