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The response of store lambs to dietary supplements of fish meal 3. Effects of the preceding pattern of growth

Published online by Cambridge University Press:  02 September 2010

S. R. Tayer  and
M. J. Bryant
S. R. Tayer
Affiliation:
Department of Agriculture, University of Reading, Earley Gate, Reading RG6 2AT
M. J. Bryant
Affiliation:
Department of Agriculture, University of Reading, Earley Gate, Reading RG6 2AT
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Abstract

Three diets containing 0, 45 or 90 g fish meal dry matter (DM) per kg diet DM were given to lambs in sufficient quantities to provide energy for maintenance and 150 g daily gain. The lambs grew directly from 30 to 40 kg live weight (C) or were given a maintenance diet only such that they remained at 30 kg live weight for 12 weeks before being allowed to proceed to 40 kg (R). The 48 lambs were slaughtered at 40 kg. Preliminary slaughter groups provided data upon the fleece-free empty body weights for both C and R lambs at 30 kg live weight.

There were no significant diet × growth pattern interactions. R lambs ate more DM (P < 0·01) and had greater fleece-free empty body gains (P < 0·01) than C lambs. The inclusion of fish meal in the diet increased fleece and offal weights (P < 0·05) and fleece-free empty body gains (P < 0·01). Much of the response was confined to the first increment of fish meal. The preceding growth pattern had little effect upon the response of the lambs to dietary supplements of fish meal.

Type
Research Article
Information
Animal Production , Volume 47 , Issue 3 , December 1988 , pp. 393 - 399
Copyright
Copyright © British Society of Animal Science 1988

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References

REFERENCES

Agricultural Research Council. 1980. The Nutrient Requirements of Ruminant Livestock. Commonwealth Agricultural Bureaux, Slough.Google Scholar
Agricultural Research Council. 1984. The Nutrient Requirements of Ruminant Livestock. Suppl. No. 1. Commonwealth Agricultural Bureaux, Slough.Google Scholar
Butler-Hogg, B. W. and Tulloh, N. M. 1982. Growth patterns in sheep: the effects of weight losses on compensatory growth and feed intake in Corridale sheep. Journal of Agricultural Science, Cambridge 99: 641–649.Google Scholar
Graham, N. Mcc. and Searle, T. W. 1975. Studies of weaner sheep during and after a period of weight stasis. I. Energy and nitrogen utilization. Australian Journal of Agricultural Research 26: 343–353.Google Scholar
Graham, N. Mcc. and Searle, T. W. 1979. Studies of weaned lambs before, during and after a period of weight loss. I. Energy and nitrogen utilization. Australian Journal of Agricultural Research 30: 513–523.Google Scholar
Hassan, S. A. and Bryant, M. J. 1986a. The responses of store lambs to protein supplementation of a roughage-based diet. Animal Production 42: 73–79.Google Scholar
Hassan, S. A. and Bryant, M. J. 1986b. The response of store lambs to dietary supplements of fish meal. 1. Effects of forage-to-concentrate ratio. Animal Production 42: 223–232.Google Scholar
Hassan, S. A. and Bryant, M. J. 1986c. The response of store lambs to dietary supplements of fish meal. 2. Effects of level of feeding. Animal Production 42: 233–240.Google Scholar
Hovell, F. D. Deb., Ørskov, E. R., Grubb, D. A. and Macleod, N. A. 1983. Basal urinary nitrogen excretion and growth response to supplemental protein by lambs close to energy equilibrium. British Journal of Nutrition 50: 173–187.CrossRefGoogle ScholarPubMed
Keen An, D. M., Mcmanus, W. R. and Freer, M. 1970. Voluntary intake of food by mature sheep following restricted feeding. Journal of Agricultural Science, Cambridge 74: 477–485.CrossRefGoogle Scholar
Mcmanus, W. R., Reid, J. T. and Donaldson, L. E. 1972. Studies of compensatory growth in sheep. Journal of Agricultural Science, Cambridge 79: 1–12.Google Scholar
Mehrez, A. Z. and Ørskov, E. R. 1977. A study of the artificial fibre bag technique for determining the digestibility of feeds in the rumen. Journal of Agricultural Science, Cambridge 88: 645–650.Google Scholar
Ministry of Agriculture, Fisheries and Food, Department of Agriculture and Fisheries for Scotland and Department of Agriculture for Northern Ireland. 1984. Energy allowances and feeding systems for ruminants. Technical Bulletin. Her Majesty's Stationery Office, London.Google Scholar
Murray, D. M. and Slezacek, O. 1980. Growth pattern and its effect on feed utilization of sheep. Journal of Agricultural Science, Cambridge 95: 349–355.Google Scholar
Ørskov, E. R. and Mcdonald, I. 1979. The estimation of proton degradability in the rumen from incubation measurements weighted according to rate of passage. Journal of Agricultural Science, Cambridge 92: 499–503.CrossRefGoogle Scholar
Ørskov, E. R., Mcdonald, I., Grubb, D. A. and Pennie, K. 1976. The nutrition of the early weaned lamb. IV. Effects on growth rate, food utilization and body composition of changing from a low to a high protein diet. Journal of Agricultural Science, Cambridge 86: 411–423.Google Scholar
Storm, E. and Ørskov, E. R. 1982. Biological value and digestibility in the small intestine of rumen microbial protein in lambs. Proceedings of the Nutrition Society 41: 78A (Abstr.).Google Scholar
Winter, W. H., Tulloh, N. M. and Murray, D. M. 1976. The effect of compensatory growth in sheep on empty body weight, carcass weight and the weights of some offals. Journal of Agricultural Science, Cambridge 87: 433–441.Google Scholar