Author:
Kot A N,Tsai V P,Radchikov V F,Slozhenkina M I,Mosolov A A,Knyazhechenko O A
Abstract
Abstract
Indicators of rumen digestion of young cattle has been studied when fed with concentrates with high level of degradable protein and non-structural carbohydrates subjected to barothermal treatment. Extrusion of concentrated feed decreases degradability of concentrates protein by 26-28%. Correlation of indicators of rumen digestion in steers with the method of preparation for feeding with concentrates with high level of degradable protein and non-structural carbohydrates has been determined. So, in animals receiving feed subjected to barothermal treatment, the number of ciliates in rumen fluid increases by 5.4%, total nitrogen – by 2.9%, and concentration of ammonia and volatile fatty acids decreases by 8.1 and 3.4% Thus, processing of concentrates stimulates development of microflora of proventriculus and reduces the rumen protein loss. Barothermal treatment of concentrates with a high protein degradability and high level of non-structural carbohydrates increases productivity of animals and efficiency of feed. The average daily weight gain in animals of experimental group increases by 4.8-6.0%. As a result, the feed cost is reduced by 2.7-6.9%, and protein – by 2.6-5.7%.
Reference18 articles.
1. The significance of rapeseed and rapeseed products for animal nutrition and the quality of animal products;Jeroch;Zemesukiomokslai,2008
2. Protein sources in supplements for bulls in the dry-rainy transition season: nutritional characteristics;Acedo;Arq. Brasil. Med. Veter. Zootecn.,2011
3. The effect of concentrate level and concentrate composition on the performance of growing dairy heifers reared and finished for beef production;Huuskonen;ActaAgr. Scand. Sect. A.,2009
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