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Performance of British Saanen, Boer × British Saanen and Anglo-Nubian castrated male kids from 8 weeks to slaughter at 28, 33 or 38 kg live weight

Published online by Cambridge University Press:  02 September 2010

M. J. Gibb ,
J. E. Cook  and
T. T. Treacher
M. J. Gibb
Affiliation:
AFRC Institute of Grassland and Environmental Research, Hurley, Maidenhead SL6 5LR
J. E. Cook
Affiliation:
AFRC Institute of Grassland and Environmental Research, Hurley, Maidenhead SL6 5LR
T. T. Treacher
Affiliation:
AFRC Institute of Grassland and Environmental Research, Hurley, Maidenhead SL6 5LR
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Abstract

The performance of British Saanen, Boer × British Saanen and Anglo-Nubian kids from weaning to slaughter at 28, 33 or 38 kg live weight (LW) was examined in a 3 × 3 factorial experiment. Kids were reared on a concentrate and hay ration, after weaning at 8 weeks of age. Intakes were measured individually. At slaughter, carcasses and body fractions were weighed, left half-carcasses were dissected into muscle, fat and bone, and the carcass and non-carcass fractions were analysed chemically. There ivas no significant effect of breed type on mean daily intakes, but there was a significant breed-type effect on mean daily LW gains in the order British Saanen > Boer × British Saanen > Anglo-Nubian kids. Compared with the pure British Saanen kids, the Anglo-Nubian kids produced heavier carcasses yielding more muscle and less subcutaneous and intermuscular fat at each slaughter weight. By contrast, the Boer × British Saanen carcasses contained proportionately more fat, mainly intermuscular fat, than the British Saanen when slaughtered at 28 or 33 kg LW. When taken on to slaughter at 38 kg LW, the Boer × British Saanen kids showed little further increase in fat deposition at the internal and intermuscular sites compared with the British Saanens, resulting in carcasses with slightly more subcutaneous fat but lower overall carcass fat content.

Keywords

body compositioncarcass compositiongoats and goat breeds
Type
Research Article
Information
Animal Production , Volume 57 , Issue 2 , October 1993 , pp. 263 - 271
Copyright
Copyright © British Society of Animal Science 1993

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References

Bartocci, S., Terzano, G. M. and Borghese, A. 1986. La produzione del capretto negli allevamenti intensivi. 2. Dati in vita e al macello in soggetti Saanen di 35 e 48 giorni di eta. Annali delt'Istituto Sperimentale per la Zootecnia 19: 109–121.Google Scholar
Berg, R. T. and Butterfield, R. M. 1974. Growth of meat animals. In Meat (ed. Cole, D. J. A. and Lawrie, R. A.), pp 9–14. Butterworths, London.Google Scholar
Borghese, A., Terzano, G. M. and Bartocci, S. 1990. La produzione del capretto negli allevamenti intensivi. 6. Caratteristiche della carcassa e della carne in soggetti Saanen e Camosciata delle Alpi di 35 e 50 giorni di eta. Zootecnica e Nutrizione Animale 16: 167–178.Google Scholar
Bradstreet, R. B. 1969. The Kjeldahl method for inorganic nitrogen. Academic Press, New York.Google Scholar
Chilliard, Y., Sauvant, D., Bas, P., Pascal, G. and MorandFehr, P. 1981. Importance relative et activités métaboliques des différents tissus adipeux de la chèvre laitière. In Nutrition and systems of goat feeding (ed. Morand-Fehr, P., Bourbouze, A. and de Simiane, M.), pp. 81–87. ITOVIC-INRA, Paris.Google Scholar
Colomer-Rocher, F. and Kirton, A. H. 1989. Carcass composition of New Zealand Saanen goats. Proceedings of the New Zealand Society of Animal Production 49: 147–151.Google Scholar
Everitt, G. C. and Jury, K. E. 1966a. Effect of sex and gonadectomy on the growth and development of South Down × Romney cross lambs. 1. Effect on live-weight growth and components of live weight. Journal of Agricultural Science, Cambridge 66:1–14.CrossRefGoogle Scholar
Everitt, G. C. and Jury, K. E. 1966b. Effect of sex and gonadectomy on the growth and development of South Down × Romney cross lambs. 2. Effects on carcass grades, measurements and chemical composition. Journal of Agricultural Science, Cambridge 66:15–27.CrossRefGoogle Scholar
Food and Agriculture Organization. 1991. FAO production yearbook, volume 45. Food and Agriculture Organization, Rome, Italy.Google Scholar
Gall, C. 1981. In Goat production (ed Gall, C.), p. 103. Academic Press, London.Google Scholar
Hogg, B. W., Catcheside, L. M., Mercer, G. J. K. and Duganzich, D. M. 1989. Meat yields and chemical composition of muscle in New Zealand goats. Proceedings of the New Zealand Society of Animal Production 49: 153–156.Google Scholar
Kempster, A. J. and Cuthbertson, A. 1977. A survey of the carcass characteristics of the main types of British lamb. Animal Production 25:165–179.Google Scholar
Louca, A., Economides, S. and Hancock, J. 1977. Effects of castration on growth rate, feed conversion efficiency and carcass quality in Damascus goats. Animal Production 24: 387–391.Google Scholar
Lu, C. D. and Potchoiba, M. J. 1988. Milk feeding and weaning of goat kids — a review. Small Ruminant Research 1: 105–112.CrossRefGoogle Scholar
Mohammed, H. H. 1982. Energy requirements for maintenance and growth; comparison of goats and sheep. Ph.D. thesis, University of Reading.Google Scholar
Morand-Fehr, P., Bas, P., Rouzeau, A. and Hervieu, J. 1985. Development and characteristics of adipose deposits in male kids during growth from birth to weaning. Animal Production 41: 349–357.Google Scholar
Morand-Fehr, P., Bas, P., Schmidely, P. and Hervieu, J. 1986. Facteurs influenqant la qualité des carcasses de chevreaux et en particulier son état d'engraissement. Hes Journées de la Recherche Ovine et Caprine. Qualité des produits chez les ovines et les caprins, Paris, pp. 236–252.Google Scholar
Mowlem, A. 1988. In Goat farming, pp. 155–156. Farming Press, Ipswich.Google Scholar
Mtenga, L. A. 1979. Meat production from Saanen goats. Ph.D. thesis, University of Reading.Google Scholar
Niekerk, W. A. van and Casey, N. H. 1988. The Boer goat. 2. Growth, nutrient requirements, carcass and meat quality. Small Ruminant Research 1: 355–368.CrossRefGoogle Scholar
Owen, E. 1980. Nutrition and feeding. British Goat Society Monthly Journal 73: 355–360.Google Scholar
Penning, P. D., Bradfield, P. G. E. and Treacher, T. T. 1971. A note on the performance of artificially reared lambs fed cold milk substitute from birth to slaughter. Animal Production 13: 365–368.Google Scholar
Pettinati, J. D. and Swift, C. E. 1975. Rapid determination of fat in meat and meat products by Foss-Let solvent extraction and density measurement. Journal of the Association of Official Analytical Chemists 58: 1182–1187.Google Scholar
Pettinati, J. D. and Swift, C. E. 1977. Collaborative study of accuracy and precision of rapid determination of fat in meat and meat products by Foss-Let method. Journal of the Association of Official Analytical Chemists 60: 853–858.Google Scholar
Potchoiba, M. J., Lu, C. D., Pinkerton, F. and Sahlu, T. 1990. Effects of all-milk diet on weight gain, organ development, carcass characteristics and tissue composition, including fatty acids and cholesterol contents, of growing male goats. Small Ruminant Research 3: 583–592.CrossRefGoogle Scholar
Sanz Sampelayo, M. R., Ruiz, I., Gil, F. and Boza, J. 1990. Body composition of goat kids during sucking. Voluntary feed intake. British journal of Nutrition 64: 611–617.CrossRefGoogle ScholarPubMed
Smith, G. C., Carpenter, Z. L. and Shelton, M. 1978. Effect of age and quality level on the palatability of goat meat. Journal of Animal Science 46: 1229–1235.CrossRefGoogle Scholar
Stark, B. A. and Wilkinson, J. M. 1985. The growth of goats given contrasting supplements to hay. Animal Production 40: 572 (abstr.).Google Scholar
Terzano, G. M., Bartocci, S. and Borghese, A. 1987. La produzione del capretto negli allevamenti intensivi. 3. Caatteristiche delle carcasse in soggetti Saanen di 35 e 48 giorni di eta. Annali dell'lstituto Sperimentale per la Zootecnia 20: 37–57.Google Scholar
Terzano, G. M., Bartocci, S. and Borghese, A. 1988. La produzione del capretto negli allevamenti intensivi. 4. Dati in vita e al macello in soggetti Saanen e Camosciata delle Alpi di 35 e 50 giorni di eta. Zootecnica e Nutrizione Animale 14:495–501.Google Scholar
Treacher, T. T., Mowlem, A., Wilde, R. M. and Butler-Hogg, B. 1987. Growth, efficiency of conversion and carcass composition of castrate male Saanen and Saanen × Angora kids on a concentrate diet. Annales de Zootechnie 36: 341–342.CrossRefGoogle Scholar
Wilson, P. N. 1960. The effect of plane of nutrition on the growth and development of the East African dwarf goats. 3. The effect of plane of nutrition and sex on the carcass composition of the kids at two stages of growth, 16 lb weight and 30 lb weight. Journal of Agricultural Research, Cambridge 54: 105–130.CrossRefGoogle Scholar