Nutrition Management, Nitrogen Efficiency, and Income over Feed Cost on Dairy Farms in Costa Rica

Journal of Dairy Science

Volumn 81, Issue 3, 1998, Pages 801-806

  Baars, R M T ^a,b  

^a UNIVERSIDAD NACIONAL   (Costa Rica)

^b HARAMAYA UNIVERSITY   (Ethiopia)

Author keywords

Concentrates; Costa Rica; Income over feed cost; Nitrogen

Indexed keywords

NITROGEN;

ANIMAL; ANIMAL FOOD; ARTICLE; CATTLE; COST; COSTA RICA; DAIRYING; ECONOMICS; FEMALE; INCOME; LACTATION; METABOLISM; PHYSIOLOGY; PROTEIN INTAKE;

ANIMAL FEED; ANIMAL NUTRITION PHYSIOLOGY; ANIMALS; CATTLE; COSTA RICA; COSTS AND COST ANALYSIS; DAIRYING; DIETARY PROTEINS; FEMALE; INCOME; LACTATION; NITROGEN;

EID: 0032016283     PISSN: 00220302     EISSN: None     Source Type: Journal    
DOI: 10.3168/jds.S0022-0302(98)75637-1     Document Type: Article

References (20)

1. Aarts, H.F.M., E. E. Biewinga, and H. van Keulen. 1992. Dairy farming systems based on efficient nutrient management. Neth. J. Agric. Sci. 40:285-299.
2. Adkinson, R. W., W. S. Farmer, and B. F. Jenny. 1993. Feeding practices and income over feed cost on pasture-oriented dairy farms in Louisiana. J. Dairy Sci. 76:3547-3554.
3. Andrew, S. M., D. R. Waldo, and R. A. Erdman. 1994. Direct analysis of body composition of dairy cows at three physiological stages. J. Dairy Sci. 77:3022-3033.
4. Baars, R.M.T., T. de Graaf, and J. Murillo. 1995. La relación entre alimentación, composición de leche y enfermedades metabólicas: reporte de un caso. Page 12 in Proc. IX Congreso Nacional de Medicina Veterinaria/XI Congreso Centroamericano de Medicina Veterinaria y Zootecnia, Puntarenas, Costa Rica. Universidad Nacional, San José, Costa Rica.
5. Baars, R.M.T., C. Solano, M. T. Baayen, J. Rojas, and L. 't Mannetje. 1996. MIS support for pasture and nutrition management of dairy farms in tropical countries. Comp. Elect. Agric. 15:27-39.
6. Bath, D. L. 1985. Nutritional requirements and economics of lowering feed costs. J. Dairy Sci. 68:1579-1584.
7. Cox, C. P., A. S. Foot, Z. D. Hosking, C. Line, and S. J. Rowlani. 1956. The direct evaluation of pasture in terms of the milk production of individually grazed cows. J. Br. Grassl. Soc. 11: 107-118.
8. Dwinger, R. H., E. Cappella, E. Pérez, M. Baayen, and E. Müller. 1994. Application of a computerized herd management and production control program in Costa Rica. Trop. Agric. (Trin.) 71:74-76.
9. Hermans, C.M.L., and P. H. Vereijken. 1994. Grazing husbandry based on sustainable nutrient management. Pages 113-122 in Proc. 4th Zodiac Symp., Wageningen, The Netherlands. EAAP Publ. 67. Wageningen Pers, Wageningen, The Netherlands.
10. Hof, G., and, S. Tamminga. 1994. Feeding management to reduce nitrogen losses in dairy cows. Pages 149-153 in Proc. 4th Zodiac Symp., Wageningen, The Netherlands. EAAP Publ. 67. Wageningen Pers, Wageningen, The Netherlands.
11. Holding, A. J. 1982. Some priority research areas in nitrogen studies. Plant Soil 67:81-90.
12. Logan, V. S., and W. J. Pigden. 1969. Estimating herbage yield from energy intake of grazing ruminants. Pages 140-151 in Experimental Methods for Evaluating Herbage. Publ. 1315. J. B. Campbell, ed. Can. Dep. Agric., Ottawa, ON, Canada.
13. National Research Council. 1989. Nutrient Requirements of Dairy Cattle. 6th rev. ed. Natl. Acad. Sci., Washington, DC.
14. Nicholson, C. F., and W. A. Knoblauch. 1993. A comparison of New York and Ontario Dairy Farms. J. Dairy Sci. 76: 2050-2055.
15. Panacea User Guide. 1986. Pan Livestock Services Ltd., Reading, England.
16. Quirós, J., A. Meneses, W. Moreno, L. Cordero, and H. Cedeno. 1993. Diagnostico de la cetosis subclínica en hatos lecheros de alta producción en Costa Rica. Cienc. Vet. 15:15-25.
17. Schmidt, G. H., and D. E. Pritchard. 1987. Effect of increased production per cow on economic returns. J. Dairy Sci. 70: 2695-2789.
18. Stone, J. B., J. D. Burke, H. R. Ainslie, and L. D. Van Vleck. 1966. Changes in milk production in relation to changes in feeding and management practices in Dairy Herd Improvement Association herds. J. Dairy Sci. 49:277-291.
19. Van der Grinten, P., M. T. Baayen, L. Villalobos, R. H. Dwinger, and L. 't Mannetje. 1992. Utilisation of Kikuyu grass (Pennisetum clandestinum) pastures and dairy production in a high altitude region of Costa Rica. Trop. Grassl. 26:255-272.
20. Vargas, G. E. 1984. Tabla de Composición de Alimentos para Animales de Costa Rica. Univ. Costa Rica, San José.