Productive effect of sorghum Sudangrass silage in fattening calves
2007
Petkova, M., Institute of Animal Science, Kostinbrod (Bulgaria) | Zhelev, K., Executive Agency for Selection and Reproduction in Animal Breeding, Sofia (Bulgaria)
This study was conducted to assess the effect of the type of the main ration energetic compound (silage) in fattening male calves rations on productivity and some blood biochemical parameters. Twelve Holstein calves were allocated to two treatments for 90 days. In control group calves were fed a basal diet with ad libitum corn silage. Experimental colves were fed the same as control groups basal diet with ad libitum sorghum Sudan grass silage. The comparison of the productive results from feeding of two kind of silage shows that the average daily gain obtained for experimental period from 90 days is higher with 4.5% in the corn silage group. The silage kind has influenced more significantly the feed conversion ratio in the experimental group. No differences in blood metabolites (content of protein, amino-N and glucose) and GPT and GOT activities were observed due to treatment, except that ATP-ase had a significant lower activity in sorghum Sudan grass group. This experiment demonstrated and confirmed suitable nutritive value and good productive results of the sorghum Sudan grass silage and that was way possibility to use successfully as a component of rations for fattening calves.
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