The nutrition of the early-weaned calf VI. The effect of supplemental lysine and methionine on the utilisation of groundnut protein
- 1 February 1964
- journal article
- research article
- Published by Cambridge University Press (CUP) in Animal Science
- Vol. 6 (1) , 17-24
- https://doi.org/10.1017/s0003356100037909
Abstract
SUMMARY 1. Nitrogen balance studies have been conducted on eight early-weaned calves receiving four diets containing, respectively, groundnut meal, groundnut+lysine, groundnut+lysine+methionine and white-fish meal as the major protein source. 2. There were no significant differences between groundnut meal diets i n any of the measurements examined. On the fish meal diet all measures of nitrogen retention tended to be higher than the corresponding values for groundnut meals. 3. Daily live-weight gains were significantly higher on the fish meal diet than on any of the groundnut diets (P<0·05). 4. It is suggested that the supplementary amino acids, being highly soluble, were rapidly deaminated by rumen micro-organisms.Keywords
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