Gulim Abakanova,

Yuriy Balji.

yu.balji@kazatu.edu.kz

Sustainable safe fodder for livestock animals is essential for animal health and welfare. Currently, numerous research groups globally attempt to find efficient and environmentally safe feed components which would allow the complete realization of the genetic potential of the animals as well as reduce the negative impact of negative energy balance on the cow’s body. The use of extruded enriched feeds and feed additives in the diet of lactating cows might be an attractive option. Scientific and economic experiments to study efficiency of using extruded forages in feeding dairy cows were carried out in Akmola region in "Milk Product" LLP. In the study, 112 milking cows of Simmental breed were included. Animals were fed 4 kg of extruded barley and rape cake in the same proportion for 20 days. Milk sampling and productivity measurements were performed at the beginning and at the end of the study. The dynamics of average daily milk yield and quality indices of milk were recorded. The daily application of the extruded enriched feed increased the milk productivity by 7.2%, from 20.0±2.35 L, to 21.4±2.06 L per day. The content of fat fraction in milk at the end of the experiment increased by 43.3%, from 2.5±0.37% to 3.6±0.41%. It was noted that the ratio of protein to fat at the beginning of the experiment deviated from the norm, i.e. fat concentration was lower by 16.7% than protein. At the end of the experiment, the fat-to-protein ratio normalized. The number of somatic cells throughout the experiment remained within physiological norms and was 106.6±11.83 thousand in 1 ml at the beginning, and 114.5±26.19 thousand in 1 ml at the end. It was concluded that extruded barley and rape cake in the same proportion might be an attractive feed option to improve milk quality and productivity, but more studies are needed to find an optimal combination.

Keywords: extruded barley feed, milk productivity, milk quality.

Для цитирования: Gulim Abakanova, Yuriy Balji. Effect of extruded barley feed on cow milk quality. International scientific conference. Proceedings animal science: «Sustainable livestock production and animal welfare». NUBiP of Ukraine. 17-18 January 2023, Kyiv-Stockholm. P. 47.