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The effect of pattern of nutrien supply on the carcass composition of lambs of different genotypes

AutorIason, G. R.; Mantecón, Ángel R. ; Milne, J. A.; Smith, A. D. M.; White, I. R.; Sim, D. A.
Palabras claveLambs
Fecha de publicación1989
EditorMacaulay Land Use Research Institute
ResumenFor each of the Welsh Mountain and Beulah genotypes, 78 wether lambs were offered either continuous ad libitum feed or a period of food supply restricted to maintenance (84 days) followed by ad libitum feeding. Lambs of the larger Beulah genotype had a greater proportion of carcase in their liveweight (P<0.001), greater rate of liveweight gain (g/day P<0.05) but a greater intake (g/kg LW/day P<0.001). Rates of liveweight gain and efficiency of food conversion were significantly greater during the post-restriction growth phase as compared to continuous ad libitum growth (P<0.001). These effects of dietary treatment were consistent in the two breeds.
DescripciónWork in Progress MLURI, 1988, 229-231.--3 pages, 2 tables.-- Research Objetive 040274.
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