Effect of doses of direct-fed microbials plus exogenous fibrolytic enzymes supplementation on growth, feed efficiency ratio and fecal consistency index of brown swiss and holstein Friesian Calves

DOI: 10.5958/0976-0555.2015.00014.X    | Article Id: B-239 | Page : 63-69
Citation :- Effect of doses of direct-fed microbials plus exogenous fibrolytic enzymes supplementation on growth, feed efficiency ratio and fecal consistency index of brown swiss and holstein Friesian Calves.Indian Journal of Animal Research.2015.(49):63-69
R. Kocyigit, R. Aydin, M. Yanar*, O. Guler, A. Diler, N. Tuzemen, M. Avci, S. Ozyurek, E. Hirik and D. Kabakci mtyanar@gmail.com
Address : Department of Animal Science, College of Agriculture, Ataturk University, Erzurum, 25240, Turkey.


The objectives of this study were to compare the effect of different doses of direct-fed microbials (DFM) plus exogenous fibrolytic enzymes (EFE) additives on the growth performance, feed efficiency ratio and fecal consistency index of Brown Swiss and Holstein Friesian calves. Twenty six calves were assigned to three groups (control, 10 g and 20 g per head/day of DFM plus EFE) according to breeds. Calves in 10 g per head/day of DFM plus EFE group in pre- and post-weaning periods had 20.0 % and 6.3 % higher total weight gains than calves in the control group respectively. However, the effects of breeds and dosages of the supplement on the weights, weight gains and feed efficiency ratios were not significant. Average fecal consistency score of the calves fed a diet supplemented with 10 g head/day of DFM plus EFE had the lowest score (P


Calves Diarrhea Direct fed microbials Fibrolytic enzymes Weight gains.


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