Protein Exchange and Localization in the Organism of Fattened Bull-Calves after the Introduction of Various Dosages of Vitamin A into the Diets with Bagasse Pellets
Andrey Vladimirovich Valoshin

Andrey Vladimirovich Valoshin, Ogarev Mordovia State University, Saransk, Russian Federation.
Manuscript received on 05 May 2019 | Revised Manuscript received on 12 May 2019 | Manuscript published on 30 May 2019 | PP: 659-662 | Volume-8 Issue-7, May 2019 | Retrieval Number: G5503058719/19©BEIESP
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Abstract: Research data are provided about the effect of various dosages of vitamin A (retinol acetate) on the metabolism and localization of the protein in the organism of experimental animals (fattened bull-calves), that is, conversion of proteins in the diet into the main nutrients of the edible portion of the carcass (cuts) of bull-calves fed on diets with bagasse pellets. It has been found that vitamin A preparations are to be introduced into such diets; in the experiment, the authors used retinol acetate with the biological activity of 1 mln IU in 1 g, so as to make their content in the diets about 25 – 27 thous. IU per 100 kg of live weight (the optimal dosage, depending on the body weight of the animal during the experiment). This helps improve the average daily live weight gain of bull-calves by 11.7 %, of the carcass weight – by 9.2 %, including flesh – by 11.1 %. In the flesh of the carcass, the content of protein increased by 15.4 %, of fat – by 15.2 %, and of energy – by 8.2 %. The conversion ratio of feed protein to food protein in the meat part of the carcass increased by 1.33 %, of feed energy – by 1.2 %. Index Terms: 
Keyword: Bull-calves, Fattening, Bagasse Pellets, Meat Yield, Conversion, and Localization of feed Protein and Energy. 
Scope of the Article: Bio-Science and Bio-Technology