Seasonal variations in chemical composition and dry matter degradability of the forage consumed by goats in a highly deteriorated rangeland of North Mexico

South African Journal of Animal Science

Volumn 34, Issue SUPPL. 1, 2004, Pages 68-71

  Juarez A S ^a   Montoya, R ^a   Nevarez, G ^a   Cerrillo, M A ^a  

^a UNIVERSIDAD JUÁREZ DEL ESTADO DE DURANGO   (Mexico)

Author keywords

Degradability; Grazing goats; In situ; Semi arid region

Indexed keywords

ANIMALIA; ARIDA; CAPRA HIRCUS; MEDICAGO SATIVA; OVIS ARIES;

EID: 21344473892     PISSN: 03751589     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Conference Paper

References (18)

1. AFRC, 1993. Energy and Protein Requirements of Ruminants. CAB International, Wallingford, Oxon OX10 8DE, UK.
2. Alvarez, G.R.A., 2003. Degradabilidad in situ de la materia seca del forraje consumido por caprinos en un matorral mediano subespinoso durante dos años consecutivos. Tesis de maestría. FMVZ-UJED. Durango, Dgo. México. 32 pp.
3. AOAC, 1985. Official methods of analysis (12th ed.). Association of Official Analytical Chemists, Inc., Washington, D.C. USA.
4. Aufrère, J., 1982. Prediction of forage digestibility by an enzymatic method. Ann. Zootech. 31, 111-119.
5. Devendra, C., 2001. Small ruminants: Imperatives for productivity enhancement improved livelihoods and rural growth. A review. Asian-Aust. J. Anim. Sci. 14, 1483-1496.
6. France, J. Theodorou, M.K., Lowman, R.S. & Beever, D.E., 2000. Feed evaluation for animal production. In: Feeding systems and feed evaluation models. Eds. Theodorou, M.K. & France, J., CABI Publishing. pp. 1-9.
7. Granados, S.D. & Castañeda, A.P., 1991. El nopal: Historia, Fisiología, genética e importancia frutícola. Ed. Trillas. Universidad Autónoma Chapingo. México.
8. Handl, W.P. & Rittenhouse, L.R., 1975. A comparison of three methods of estimating digestibility for determining intake of grazing cattle. J. Range Manage. 28, 414-416.
9. Khazaal, K., Dentino, M.T., Ribeiro, J.M. & Ørskov, E.R., 1995. Prediction of apparent digestibility and voluntary intake of hays fed to sheep: Comparison between using fibre components, in vitro digestibility or characteristics of gas production or nylon bag degradation. Anim. Sci. 61, 527-538.
10. Kearl, L.C., 1982. Nutrient requirements of ruminants in developing countries. International Feedstuffs Institute, Utah Agric. EXP. Station. Utah State University Logan 84 322, USA. 381 pp.
11. Molina, M.C. & Fresnillo, D.E, 1992. Atributos de la vegetación del matorral mediano subespinoso de dos sitios de agostadero en Cuencamé, Durango. In: memorias de la Reunión Nacional de Investigación pecuaria. Chihuahua, México, p. 3.
12. NRC, 1981. Nutrient requirements of goats. Angora, Dairy and Meat Goats in temperate and tropical countries. No 15. National Academy Press, Washington, D.C., USA.
13. Ørskov, E.R. & McDonald, L., 1979. The estimation of protein degradability in the rumen from incubation measurements weighted according to the rate of passage. J. Agric. Sci., Camb. 92, 499-503.
14. Preston, T.R. & Leng, R.A., 1989. Adecuando los sistemas de producción pecuaria a los recursos disponibles: Aspectos básicos y aplicados del nuevo enfoque sobre nutrición de rumiantes en el trópico. CONDRIT. Ltda. Cali, Colombia. 312 pp.
15. SAS, 1997. Applied Statistics and the SAS Programming Language. (4th ed.). Prentice Hall, Upper Saddle River, New Jersey 07458, USA.
16. Schacht, W.H., 1992. Shrub ecology, nutritive value, and palatability. In: Proc. International Conference on Meat Goat Production, Management and Marketing. Eds. Paschal, J.C. & Hanselka, C.W., Laredo, Texas. USA. pp. 92-102.
17. Stevens, E.J., Thomson, G.G. & O'Connor, K.F., 1985. A modified procedure for esophageal fistulation of sheep. J. Range Manage. 38, 88-89.
18. Van Soest, P.J., Robertson, J.B. & Lewis, B.A., 1991. Methods for dietary, neutral detergent fiber, and non starch polysaccharides in relation to animal nutrition. Symposium: carbohydrate methodology, metabolism, and nutritional implications in dairy cattle. J. Dairy Sci. 74, 3583-3597.