Formation of quality indexes in beef during using in young cattle rations new feed additives in organic form

Abstract

The study has shewn a positive effect of the feed supplements Yoddar-Zn and Glimalask- Vet on the quality indicators of meat of young cattle, with the feed supplements to be most efficiently used in an integrated manner. So, the carcasses of the calves, which consumed both Yoddar-Zn and Glimalask-Vet (Group I), contained more meat of the highest grade than their analogues in control group by 6,48 kg; compared with the calves in Group II (consumed only Yoddar-Zn) by 3,50 kg; as for meat of the first grade by 15,19 and 7,86 kg, respectively. The meat of young animals, which consumed feed supplements in their diet, contained more essential amino acids. The protein quality index of their meat was higher than in the control group by 0,73 and 0,28; the amino acid index by 0,17 and 0,04. Meat of the young cattle in the experimental groups had higher culinary and technological properties. The indices of water-holding capacity of the eye muscle of the calves in test Groups I and II were higher than of their analogues in the control Group by 0,8 and 0,5 %; the ability to be shrinked in cooking was less by 1,4 and 0,7 %. The culinary and technology index of their meat was higher by 0,13 and 0,05, respectively. The effect of the feed supplements studied on the fractional composition of muscle protein has been established. The ratio of highly digestible and not easily assimilable protein fractions was most optimal in the meat of the calves in the test groups. Higher content of triglycerides in adipose tissue of the calves was registered in the control group; higher content of cholesterol and cholesterol esters was marked in the test groups. The study of the quality indicators of meat has not found a negative impact of the feed supplements Yoddar-Zn and Glimalask-Vet on the sensory evaluation of meat products.