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Protein and energy metabolism of lactating Granadina goats

Published online by Cambridge University Press:  09 March 2007

J. F. Aguilera ,
C. Prieto  and
J. FonollÁ
J. F. Aguilera
Affiliation:
Estación Experimental del Zaidín (EEZ), 18008 Granada, Spain
C. Prieto
Affiliation:
Estación Experimental del Zaidín (EEZ), 18008 Granada, Spain
J. FonollÁ
Affiliation:
Estación Experimental del Zaidín (EEZ), 18008 Granada, Spain
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Abstract

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Twelve goats of the Granadina breed in mid- and late lactation were used in two consecutive years to determine their protein and energy requirements for lactation. The animals were individually fed on diets based on pelleted lucerne (Medicago sativa) hay and barley. A total of six balance experiments were carried out. Gas exchange was measured using open-circuit respiration chambers. Milk yield ranged widely from 0.649 to 1.742 kg/d in the first year and from 0.222 to 1.989 kg/d in the second year, a steady decline in milk output being observed as lactation progressed. Milk composition remained rather constant during the midstage of lactation, with an average content (/kg milk) for total solids, total nitrogen, fat and gross energy of 149.7 g, 5.39 g, 58.8 g and 3.59 MJ respectively. Total endogenous N, endogenous urinary N and maintenance requirement for N in lactating goats were estimated to be 244, 218 mg N/kg body-weight (W)0.75 per d and 478 mg total N/kg W0.75 per d respectively from regression equations. A constant efficiency of use of dietary N for milk N plus retained N of 51.0 % was found. By regressing milk energy plus apparent body energy retention or loss on metabolizable energy (ME) intake, the maintenance energy requirement was estimated to be 401 kJ ME/kg W0.79 per d. When estimating the corrected milk yield as milk energy +(0.84 x negative energy retention) +(1.05 x positive energy retention), regression analysis indicated that the overall efficiency of use of ME for lactation was 66.7%. Also, from a plot of apparent body energy retention v milk energy yield, both expressed as a percentage of ME intake above maintenance, the efficiency with which ME was used to promote energy retention in the body during lactation was calculated to be 0.907 times that for milk secretion.

Keywords

Energy metabolismProtein metabolismGoats
Type
Energy metabolism and Requirements
Information
British Journal of Nutrition , Volume 63 , Issue 2 , March 1990 , pp. 165 - 175
Copyright
Copyright © The Nutrition Society 1990

References

Agricultural Research Council (1980). The Nutrient Requirements of Ruminant Livestock. Slough: Commonwealth Agricultural Bureaux.Google Scholar
Aguilera, J. F., Guerrero, J. E., Molina, E. & Boza, J. (1984). Eficiencia de utilizatión energética para la lactación en ganado caprino. 9asJornadas Cientficas de la Sociedad Española de Ovinotecnia y Caprinotecnia, pp. 305–310. Granada y Málaga: Excmas. Diputaciones Provinciales.Google Scholar
Aguilera, J. F. & Prieto, C. (1986). Description and function of an open-circuit respiration plant for pigs and small ruminants and the techniques used to measure energy metabolism. Archives of Animal Nutrition Berlin 36, 1009–1018.Google Scholar
Akinsoyinu, A. O., Mba, A. U. & Olubayo, F. O. (1976). Crude protein requirement of West African Dwarf goats for maintenance and gain. Journal of the Association for the Advancement of Agricultural Sciences in Africa 3, 75–80.Google Scholar
Armstrong, D. G. & Blaxter, K. L. (1965). Effects of acetic and propionic acids on energy retention and milk secretion in goats. In Proceedings of the 3rd European Association for Animal Production Symposium on Energy Metabolism, Publication no. 11, pp. 59–70 [Blaxter, K. L., editor]. London: Academic Press.Google Scholar
Association of Official Analytical Chemists (1975). Official Methods of Analysis, 12th ed. Washington DC: AOAC.Google Scholar
Boekholt, H. A. (1972). Cited by Agricultural Research Council (1980).Google Scholar
Brouwer, E. (1965). Report of sub-committee on constants and factors. In Proceedings of 3rd European Association for Animal Production Symposium on Energy Metabolism, Publication no. 11, pp. 441–443 [Blaxter, K. L., editor]. London: Academic Press.Google Scholar
Brun-Bellut, J., Blanchart, G. & Vignon, B. (1984). Determination des besoins azotés de la chèvre en lactation. Annales de Zootecnie 33, 171–186.CrossRefGoogle Scholar
Ciszuk, P. & Lindberg, J. E. (1985). Total nitrogen retention in lactating goats in relation to digested nitrogen and estimated absorption of amino acids. Acta Agriculturae Scandinavica 25, Suppl., 163–176.Google Scholar
Devendra, C. (1982). The protein requirements for maintenance of indigenous Kambing Katjang goats in Malaysia. Nutrition Abstracts and Reviews 52, 281.Google Scholar
Guerrero, J. E. (1982). Estudio de la alimentación del ganado caprino. Utilizatión de subproductos y ensayos de lactacion en cabras de raza Granadina. PhD Thesis, University of Córdoba.Google Scholar
Itoh, M., Haryu, T., Tano, R. & Iwasaki, K. (1978). Maintenance requirement of energy and protein for castrated Japanese native goats. Bulletin of National Institute of Animal Industry no. 33, pp. 41–50. Nishigoshi, Kumamoto: Kyushu National Agricultural Experimental Station.Google Scholar
Khouri, S. (1974). Contribution à l'étude de l'évaluation de l'éfficacité nutritive des protéines tannées chez le ruminant (cas particulier de la chèvre laitière). PhD Thesis, University of Languedoc.Google Scholar
Majumdar, B. N. (1960). Studies on goat nutrition. I. Minimum protein requirements for maintenance, endogenous urinary nitrogen and metabolic faecal nitrogen excretion studies. Journal of Agricultural Science, Cambridge 54, 329–334.CrossRefGoogle Scholar
Moe, P. W., Tyrrell, H. F. & Flatt, W. P. (1970). Partial efficiency of energy use for maintenance, lactation, body gain and gestation in the dairy cow. In Proceedings of 5th European Association for Animal Production Symposium on Energy Metabolism of Farm Animals, Publication no. 13, pp. 65–68 [Schurch, A. and Wenk, C., editors]. Zurich: Juris Druck & Verlag.Google Scholar
Mollgaard, H. (1929). Futterungslehre des Milchviehs. Hannover: M.&H. Schaper.Google Scholar
Morand-Fehr, P., Sauvant, D. & Brun-Bellut, J. (1987). Recommendations alimentaires pour les caprins. Bulletin Technique C.R.Z.V. Theix, I.N.R.A. 70, 213–222.Google Scholar
National Research Council (1981). Nutrient Requirements of Domestic Animals, Publication no. 15. Washington, DC: National Academy Press.Google Scholar
Patle, B. R. & Mudgal, V. D. (1977). Utilization of dietary energy for maintenance, milk production and lipogenesis by lactating crossbred cows during their midstage of lactation. British Journal of Nutrition 37, 23–33.CrossRefGoogle ScholarPubMed
Prieto, C., Aguilera, J. F., Lara, L. & Fonollá, J. (1990). Protein and energy requirements for maintenance of indigenous Granadina goats. British Journal of Nutrition 63, 155–163.Google Scholar
Rajpoot, R. L., Sengar, O. P. S. & Singh, S. N. (1980). Goats: protein requirement for maintenance. International Goat and Sheep Research 1, 182–189.Google Scholar
Rajpoot, R. L., Sengar, O. P. S. & Singh, S. N. (1981). Energy and protein in goat nutrition. In Nutrition and Systems of Goat Feeding, Vol. 1, pp. 101–124 [Morand-Fehr, P., Bourbouze, A. and de Simiane, M., editors]. Tours: ITOVIC-INRA.Google Scholar
Reynolds, L. (1981). Nitrogen metabolism in indigenous Malawi goats. Journal of Agricultural Science, Cambridge 96, 347–351.Google Scholar
Sengar, O. P. S. (1980). Indian research on protein and energy requirements of goats. Journal of Dairy Science 63, 1655–1670.Google Scholar
Van der Honing, Y. & Van Es, A. J. H. (1974). Utilization of energy from pelleted roughages in dairy cattle rations. In Proceedings of 6th European Association for Animal Production Symposium on Energy Metabolism of Farm Animals, Publication no. 14, pp. 209–212 [Menke, K. H., Lantzsch, H. J. and Reichi, J. R., editors]. Hohenheim: Universitat Dokumentationsstelle.Google Scholar
Van Es, A. J. H., Nijkamp, H. J. & Vogt, J. E. (1970). Feed evaluation for dairy cows. In Proceedings of 5th European Association for Animal Production Symposium on Energy Metabolism of Farm Animals, Publication no. 13, pp. 61–64 [Schurch, A. and Wenk, C., editors]. Zurich: Juris Druck & Verlag.Google Scholar
Van Es, A. J. H. and Van der Honing, Y. (1979). Energy utilisation. In Feeding Strategy for the High Yielding Dairy Cow, pp. 68–69 [Broster, W. H. and Swan, H., editors]. St Allans: Granada Publishing.Google Scholar