Shchepetilnikov Yu. The use of ferment preparations to increase the defensive functions and to decrease the stress influence on calves

UDC 636.2.084.1/.5:612.392

 

Shchepetilnikov Yu.

 

The research results concerning ferment preparations influence to increase viability, immunological reaction and to decrease stress influence on the calves in the conditions of admissible microclimate of the apartment are presented in the article. The research was conducted on the black – mixed breed; from birth till 60-days age, which were formed into three groups. Control group got base ration (BR), test group– 1 – base ration + preparation «Proksi» in the amount of 2 % of the mixed fodder, test group– 2 base ration + preparation «Respect» in the amount of 2 % of the mass of mixed fodder. The growth and development of calves from test groups were counted taking into account individual weighting out of average day`s growth and relative speed growing.

Control of physiological state of animals was made according to morphological and biochemical blood index. The level of humoral defence (bacteriological activity of blood serum – BABS, lysozyme activity of blood serum – LABS), cell defence (phagocytic activity of neutrophils – PHAN) were valued according to S.I. Plyashenko methods, the content of immunoglobulin class G,M,A according to G. Mansini et al., general protein and its fractions according to I.P. Kondrakhin methods. It is determined that the enrichment of the mixed fodder with the preparations «Proksi» and «Respect» led to haemoglobin increasing by 3,88 %, the amount of erythrocytes by 4,8 % in comparison with control and test group – 1. The increasing of level of general protein by 2,66 %, albumins by 10,49 %, globulins by 3,22 % were established. The calves from test group -2 in BABS surpassed the control group (52,37±0,89 -53,88±1,1 %) by 13,6 %, in LABS by 14,8 %. The control calves had lower PHAN (41,6 ±1,1 %) and phagocyte index. The calves from test groups to the ration of which ferment additions were added were less stressed to the conditions of МАTR than those from the control one. They surpassed the control group in live mass by 9,9 % and by 10,2 % of average daily growth of live mass by 10 – 10,2 % (p≤ 0,05), the intensity of growth by 6 – 6,4 %, and according to the gross increase –by 6,9.

Key words: calves, live mass, average daily growth, BABS, LABS, morphological indexes ,general protein, resistance.

 

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