Abstract
Fifteen Boer goat bucks, (6–8 months old), were allocated into two groups and fed ad libitum for a period of 29 days. The WH group (winter hay; n = 8) received a chopped diet consisting of grass hay, predominantly Themeda trianda grass (cut during the winter) from a natural pasture (veld). The WH+S group (winter hay plus supplement; n = 7) received a chopped diet consisting of Themeda trianda veld hay, supplemented with maize meal, molasses meal and urea. Body weights and feed consumption were recorded. Animals were slaughtered and carcass characteristics (weight and percentages of selected carcass cuts) and the carcass chemical composition were determined. The WH+S animals showed a higher live weight and cumulated feed intake. Carcass cuts from WH animals represented a higher percentage of the total carcass, especially cuts where muscle depots are higher (legs, best end chops and prime cuts). There is an attempt by non-supplemented animals to preserve the body's nitrogen reserves under prolonged nutritional stress conditions, and there is consequently a necessity to supplement feeding of small ruminants fed winter veld hay, especially if the animals are to be used in subsequent breeding seasons.
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Abbreviations
- DM:
-
dry matter
- WH:
-
winter hay group
- WH+S:
-
winter hay plus supplement group
References
Abdalla, A.L., Louvandini, H., Bueno, I.C., Vitti, D.M., Meireles, C.F. and Gennari, S.M., 1999. Constraints to milk production in grazing dairy cows in Brazil and management strategies for improving their productivity. Preventive Veterinary Medicine, 38, 217–230
Belkhou, R., Cherel, Y., Heitz, A., Robin J.P. and Le Maho Y., 1991. Energy contribution of proteins and lipids during prolonged fasting in the rat. Nutrition Research, 11, 365–374
Bogaerts, D.F., Fiems, L.O., Cottyn, B.G., Uytterhaegen, L., Demeyer, D. and Boucqué, C.V., 1996. Effect of protein and energy level on performance, carcass and meat quality of finishing Belgian White-Blue double-muscled bulls. In: A.V. Portugal (ed.), Proceedings of the 7th International Symposium on Protein Metabolism and Nutrition, Vale de Santarém, Portugal, 1996, 467–471
Butterworth, M.H., 1984. Beef Cattle Nutrition and Tropical Pastures, (Longman Group, London)
Casey, N.H. and van Niekerk, W.A., 1988a. The Boer goat. I. Origin, adaptability, performance testing, reproduction and milk production. Small Ruminant Research, 1, 291–302
Casey, N.H. and van Niekerk, W.A., 1988b. The Boer goat, II, Growth, nutrient requirements, carcass and meat quality. Small Ruminant Research, 1, 355–368
Clariget, R.P., Forsberg, M. and Rodriguez-Martinez, H., 1998. Seasonal variation in live weight, testes size, testosterone, LH secretion, melatonin and thyroxine in Merino and Corriedale rams in subtropical climate. Acta Veterinaria Scandinavica, 39, 35–47
De Waal, H.O., 1979. Die voedingswaarde van veldweiding van die sentrale Oranje-Vrystaat vir skape met spesiale verwysing na die rol van proteïen- en fosforaanvullings, (University of Stellenbosch, Stellenbosch, South Africa)
De Waal, H.O., 1990. Animal production from native pasture (veld) in the Free State Region—a perspective of the grazing ruminant. South African Journal of Animal Science, 20, 1
De Waal, H.O. and Combrinck, W.J., 2000. The development of the Dorper, its nutrition and a perspective of the grazing ruminant on veld. Small Ruminant Research, 36, 103–117
Erasmus, J.A., 2000. Adaptation to various environments and resistance to disease of the improved Boer goat. Small Ruminant Research, 36, 179–187
Fattet, I., Hovell, F.D.D., Ørskov, E.R., Kyle, D.J., Pennie, K. and Smart, R.I., 1984. Undernutrition in sheep—The effect of supplementation with protein on protein accretion. British Journal of Nutrition, 52, 561–574
Fuller, M.F., Fowler, P.A., McNeil, G. and Foster, M.A., 1990. Body composition: the precision and accuracy of new methods and their suitability for longitudinal studies. Proceedings of the Nutrition Society, 49, 423
Greyling, J.P.C., 2000. Reproduction traits in the Boer goat doe. Small Ruminant Research, 36, 171–177
Kabbali, A., Johnson, W.L., Johnson, D.W., Goodrich, R.D. and Allen C.E., 1992. Effects of undernutrition and refeeding on weights of body parts and chemical components of growing Moroccan lambs. Journal of Animal Science, 70, 2859–2865
Kamalzadeh, A., van Bruchem, J., Koops, W.J., Tamminga, S. and Zwart, D., 1997. Feed quality restriction and compensatory growth in growing sheep: feed intake, digestion, nitrogen balance and modelling changes in feed efficiency. Livestock Production Science, 52, 209–217
Kock, S.W., van Ryssen, J.B.J. and Davies, D.G., 1995. Chemical composition of carcass sawdust residue as a predictor of the chemical composition of sheep carcasses. South African Journal of Animal Science, 25(2), 50–52
Lusweti, E.C., 2000. The performance of the Nguni, Afrikander and Bonsmara cattle breeds in developing areas of Southern Africa. South African Journal of Animal Science, 30(S1), 28–29
Malan, S.W., 2000. The improved Boer goat. Small Ruminant Research, 36, 165–170
Mmbengwa, V.M., Schwalbach, L.M., Greyling J.P.C. and Fair, M.D., 2000. Milk production potential of South African Boer and Nguni goats. In: J.P. Greyling (ed.), Proceedings of the 38th Congress of the South African Society of Animal Science, 163–164
Raats, J.G., 1988. The effect of supplementation on milk yield in Boer goat ewes. South African Journal of Animal Science, 18(3), 97–100
Raats, J.G., Wilke, P.I. and Du Toit, J.E.J., 1982. The effect of age and litter size on milk production in Boer goat ewes. South African Journal of Animal Science, 13(4), 240–243
Tainton, N.M., Hardy, M.B., Aucamp, A.J. and Danckwerts, J.E., 1993. The range environment. In: C. Maree and N.H. Casey (eds), Livestock Production Systems, Pretoria 1993 (Agridevelopment Foundation), 32–62
Thomson, B.C., Thomas, B.J., Ward, L.C. and Sillence, N.D., 1997. Evaluation of multifrequency bioelectrical impedance data for predicting lean tissue mass in beef cattle. Australian Journal of Experimental Agriculture, 37, 743–749
Wilson, R.T., 1987. Livestock production in Central Mali: factors influencing growth and liveweight in agro-pastoral cattle. Tropical Animal Health and Production, 19, 103–14
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Almeida, A.M., Schwalbach, L.M., Waal, H.O.d. et al. The effect of supplementation on productive performance of Boer goat bucks fed winter veld hay. Trop Anim Health Prod 38, 443–449 (2006). https://doi.org/10.1007/s11250-006-4368-6
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DOI: https://doi.org/10.1007/s11250-006-4368-6