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Evaluation the suitable level of standard concentrated ration for fattening growing Sharabi calves

Author(s): N. M. Abdullah | A. K. Nasser | N. Y. Abou

Journal: Iraqi Journal of Veterinary Sciences
ISSN 1607-3894

Volume: 24 (Arabic);
Issue: 1;
Start page: 53;
Date: 2010;
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Three groups of growing Sharabi calves were used in this study to evaluate the best suitable level of concentrate ration. Each group consisted of four calves between 8-12 months of age, with an average live body weight around 145 kg. They were fed for 90 days on concentrated standard ration according to NRC, 1984, at three different levels of 2, 3, 4 % of live body weight, respectively, consisted of 80:20 concentrate to roughage contained 14% crude protein, 72% TDN and 2.4 Mkcal/kg. ME. The total gain and amount of consumed ration were measured. At the end of the trial, samples of rumen fluid were collected from all calves in order to estimate the activity of bacteria and micro organism. Results showed that the average amount of the daily ration consumed by the three groups of calves were 3.68, 6.91 and 8.12 kg/calves, respectively. There were significant differences (P

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