Effect of level of intake during the milk-feeding period on post-weaning growth in lambs
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Estación Agrícola Experimental, CSIC Apdo 788, 24080 León, Spain
Publication date: 1996-09-13
J. Anim. Feed Sci. 1996;5(4):317–325
Twenty four Churra lambs from multiple births were assigned to a 3x2 factorial design, with three levels of milk intake (837-L, 1046-M and 1255-H kJ gross energy per kg metabolic body weight per day) and two sexes (males and females). The effects of these factors on growth rate during the milk-feeding period (0 to 30 days), weaning period (31 to 37 days) and post-weaning period (38 to 77 days) were studied. The live weight gain during the milk-feeding period was statistically different (P < 0.001) for the three levels of milk intake (66, 109 and 127 g/day). Dry matter, crude protein and gross energy digestibilities of the milk substitute were lower (P < 0.05) for the H level of intake than the L and M levels. Weight losses during the weaning period were inversely related to the pre-weaning levels of milk intake. The live weight gains were not statistically different between male and female lambs during either the pre- or post-weaning periods. Post-weaning daily live weight gains were 34.4, 31.1 and 27.1 g/kg0.75 for L, M and H levels of milk intake respectively (P < 0.001)
Influence of live weight, sex and type of birth on growth and slaughter characteristics in early weaned lambs
Miroslav Simeonov, Nikolai Todorov, Krym Nedelkov, Atanas Kirilov, David L. Harmon
Small Ruminant Research