Hostname: page-component-586b7cd67f-2plfb Total loading time: 0 Render date: 2024-11-24T14:45:38.687Z Has data issue: false hasContentIssue false
  • English
  • Français

Effects of rapeseed-meal and fish-meal supplementation of maize silage-based diets upon the tissue growth and body composition of store lambs

Published online by Cambridge University Press:  02 September 2010

M. A. Kossaibati  and
M. J. Bryant
M. A. Kossaibati
Affiliation:
Department of Agriculture, University of Reading, Earley Gate, Reading RG6 2 AT
M. J. Bryant
Affiliation:
Department of Agriculture, University of Reading, Earley Gate, Reading RG6 2 AT
Get access

Abstract

Thirty-six individually penned lambs (mean live weight 32·4 (s.d. 2·27) kg) were offered maize silage ad libitum and one of three concentrate mixes, two of which contained extracted rapeseed meal (control and HR) and the other fish meal (FM). The concentrates were given according to live weight and in sufficient quantities to provide proportionately about 0·4 of the dry matter (DM) intake of the lambs. The dietary concentrations of the nitrogen (N) g/kg DM were 22·4, 27·4 and 27·5 and of the rumen undegradable N 6·6, 7·3 and 11·6 for the control, HR and FM diets, respectively. All lambs were slaughtered at 45 kg live weight and chemical composition of the empty body and some of the component parts determined. A further 12 lambs were slaughtered at the beginning of the experiment to establish body composition before the dietary treatments were imposed.

The HR lambs had lower fleece.free empty body (FFEB) gains than either control or FM lambs (P < 0·05). This reduced gain of HR lambs was particularly associated with a reduction in fat deposition (P < 0·01) such that the FFEBs contained less fat than control and FM lambs (P < 0·01). The efficiency of conversion of metabolizable energy for growth (kg) was worse than both the control (P < 0·01) and the FM (P < 0·001) diets. The FFEBs of HR lambs also contained more ash (P < 0·05) than the lambs receiving the other diets.

The FM diet was associated with greater gains of fat and energy in the guts compared with the control diet (P < 0·05) and FM lambs had a better kg, value than control lambs (P < 0·05). There was no evidence that FM lambs had better N retention than lambs on the other two treatments.

Keywords

body compositionfish meallambsmaize silagerapeseed oilmeal
Type
Research Article
Information
Animal Production , Volume 58 , Issue 1 , February 1994 , pp. 57 - 63
Copyright
Copyright © British Society of Animal Science 1994

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

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. Supplement no. 1. Commonwealth Agricultural Bureaux, Slough.Google Scholar
Beermann, D. H., Hogue, D. E., Fishell, V. K., Dalrymple, R. H. and Ricks, C. A. 1986. Effects of cimaterol and fish meal on performance, carcass characteristics and skeletal muscle growth in lambs. journal of Animal Science 62: 370–380.CrossRefGoogle Scholar
Chernausek, S. D., Underwood, L. E., Utiger, R. D. and Van Wyk, J. J. 1983. Growth hormone secretion and plasma somatomedin-C in primary hypothyroidism. Clinical Endocrinology 19: 337–344.CrossRefGoogle ScholarPubMed
Cottrill, B. R., Beever, D. E., Austin, A. R. and Osbourn, D. F. 1982. The effect of protein nitrogen and non-protein nitrogen supplements to maize silage on total amino acid supply in young cattle. British Journal of Nutrition 48: 527–541.CrossRefGoogle ScholarPubMed
Dayton, W. R. and Hathaway, M. R. 1991. Control of animal growth by glucocorticoids, thyroid hormones, autocrine and/or paracrine growth factors. In Growth regulation in farm animals (ed. Pearson, A. M. and Dutson, T. R.), pp. 17–45. Elsevier Science, London.Google Scholar
Hassan, S. A. and Bryant, M. J. 1986. The response of store lambs to protein supplementation of a roughage-based diet. Animal Production 42: 73–79.Google Scholar
Hill, R., Vincent, I. C. and Thompson, J. 1990. The voluntary feed intake and weight gain of lambs given a range of glucosinolate contents. Animal Production 50: 587A (abstr.).Google Scholar
Hovell, F. D. DeB. and Ørskov, E. R. 1989. The rôle of fish meal in rations for sheep. International Association of Fish Meal Manufacturers, report no. 23.Google Scholar
Kossaibati, M. A. 1987. The effects of nitrogen source on the growth rate and feed intake of store lambs fed maize silage diets. M.Sc. Thesis, University of Reading.Google Scholar
Kossaibati, M. A. and Bryant, M. J. 1994. Effects of rapeseed-meal and fish-meal supplementation of maize silage-based diets upon voluntary intake, live-weight gain and wool growth of store lambs. Animal Production. 58: 49–56.Google Scholar
Legrand, J. 1986. Thyroid hormone effects on growth and development. In Thyroid hormone metabolism (ed. Hennemann, G.), pp. 503–534. Marcel Dekker, New York.Google Scholar
MacRae, J. C. and Lobley, G. E. 1982. Some factors which influence thermal energy losses during the metabolism of ruminants. Livestock Production Science 9: 447–456.CrossRefGoogle Scholar
Ørskov, E. R., McDonald, I., Grubb, D. A. and Pennie, K. 1976. The nutrition of the early weaned lambs. The effect 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.CrossRefGoogle Scholar
Pusztai, A. 1989. Antinutrients in rapeseeds. Nutrition Abstracts and Reviews Series, B. Livestock Feeds and Feeding 59: 427–433.Google Scholar
Yilala, K. and Bryant, M. J. 1985. The effects upon the intake and performance of store lambs of supplementing grass silage with barley, fish meal and rapeseed meal. Animal Production 40: 111–121.Google Scholar