DEVELOPMENT OF BREEDING OBJECTIVES FOR PRODUCTION SYSTEMS UTILISING THE BORAN BREED IN KENYA
暂无分享,去创建一个
[1] W. B. Muhuyi,et al. Conservation and utilisation of the Sahiwal cattle in Kenya , 1999 .
[2] R. Ponzoni,et al. Developing breeding objectives for Australian cashmere goats. , 1990 .
[3] K. Gregory,et al. Sahiwal cattle: An evaluation of their potential contribution to milk and beef production in Africa , 1981 .
[4] D. Anindo,et al. The effects on production of milking crossbred suckler cows grazing a semi-arid area of Kenya , 1993 .
[5] M. Haile-Mariam,et al. Estimates of direct and maternal (co)variance components of growth traits in Boran cattle , 1995 .
[6] M. Herrero,et al. Economic values for production and functional traits in Holstein cattle of Costa Rica , 2002 .
[7] Jack C. M. Dekkers,et al. Estimation of economic values for dairy cattle breeding goals: Bias due to sub-optimal management policies , 1991 .
[8] F. Pirchner. Population genetics in animal breeding , 1969 .
[9] F. Neser,et al. VARIANCE COMPONENTS AND GENETIC PARAMETERS FOR EARLY GROWTH TRAITS IN A MIXED POPULATION OF PUREBRED BOS INDICUS AND CROSSBRED CATTLE , 2003 .
[10] A. Groen. Breeding goal definition. , 2000 .
[11] E. Cunningham,et al. Selection in dual purpose cattle populations: defining the breeding objective , 1974 .
[12] A. Groen. Cattle breeding goals and production circumstances , 1989 .
[13] J. Arendonk,et al. Derivation of economic values for veal, beef and milk production traits using profit equations. , 1993 .
[14] M. W. Tess,et al. Life cycle evaluation of five biological types of beef cattle in a cow-calf range production system: II. Biological and economic performance. , 1994, Journal of animal science.
[15] H. Wiktorsson,et al. Pre-weaning nutritional management and dry season nutritional supplementation on intake, growth and onset of puberty of improved Zebu heifers , 1996 .
[16] T. Cartwright,et al. Weaning and 18-month weights of Boran, East African Shorthorn Zebu and Sahiwal breeds or crosses in Kenya , 1988 .
[17] J. Gibson,et al. Effects of production and marketing circumstances on economic values for beef production traits , 1998 .
[18] I. Kosgey,et al. Economic values for traits of meat sheep in medium to high production potential areas of the tropics , 2003 .
[19] I. Kosgey,et al. Influence of production circumstances and economic evaluation criteria on economic comparison of breeds and breed crosses. , 1998, Journal of dairy science.
[20] The effect of inflation and form of investment on the estimated value of genetic improvement in farm livestock , 1978 .
[21] L. N. Hazel. The Genetic Basis for Constructing Selection Indexes. , 1943, Genetics.
[22] R. Ponzoni. A profit equation for the definition of the breeding objective of Australian merino sheep , 1986 .
[23] A. Groen,et al. Derivation of economic values of milk production traits: a literature review. , 1990 .
[24] C. R. Henderson. SIRE EVALUATION AND GENETIC TRENDS , 1973 .
[25] K. Meyer,et al. Genetic variation and covariation for growth, parasite resistance and heat tolerance in tropical cattle , 1991 .
[26] K. Gregory,et al. Crossbreeding cattle in beef production programmes in Kenya , 1984, Tropical Animal Health and Production.
[27] T. C. Cartwright. The Use of Systems Analysis in Animal Science with Emphasis on Animal Breeding , 1979 .
[28] J. Rege,et al. An evaluation of a long-term breeding programme in a closed Sahiwal herd in Kenya. I. Effects of non-genetic factors on performance and genetic parameter estimates , 1992 .
[29] J. F. Kluyts,et al. Development of breeding objectives for beef cattle breeding : derivation of economic values : review article , 2004 .
[30] J. Woolliams,et al. Proceedings of the 5th World Congress on Genetics Applied to Livestock Production , 1990 .
[31] S. Berry. Understanding agricultural policy in Africa: The contributions of Robert Bates , 1993 .
[32] M. Goddard,et al. Selection for carcass and feedlot traits considering alternative slaughter end points and optimized management. , 1996, Journal of animal science.
[33] G. Nitter,et al. Developing breeding schemes for pasture based dairy production systems in Kenya I. Derivation of economic values using profit functions , 2004 .
[34] H. Graser,et al. Economic evaluation of Hereford cattle breeding schemes incorporating direct and indirect measures of feed intake , 2003 .
[35] C. Schrooten,et al. Stochastic simulation of dairy cattle nucleus breeding schemes: Influence of breeding strategy and biased breeding values in the population. , 1993, Journal of animal breeding and genetics = Zeitschrift fur Tierzuchtung und Zuchtungsbiologie.
[36] A. Mellors,et al. Animal Nutrition , 1925, Nature.
[37] R. Simmen,et al. Divergent selection for blood serum insulin-like growth factor I concentration in beef cattle: I. Nongenetic effects. , 1995, Journal of animal science.
[38] H. Graser,et al. Indigenous Thai Beef Cattle Breeding Scheme Incorporating Indirect Measures of Adaptation: Sensitivity to Changes in Heritabilities of and Genetic Correlations between Adaptation Traits , 2004 .
[39] J. V. Wyk,et al. Genetic parameter estimates for body measurements and growth traits in South African Bonsmara cattle , 2002 .
[40] D. Falconer,et al. Introduction to Quantitative Genetics. , 1961 .
[41] B. Kennedy,et al. Selection on individual phenotype and best linear unbiased predictor of breeding value in a closed swine herd. , 1988, Journal of animal science.
[42] S. Newman,et al. Developing breeding objectives for australian beef cattle production , 1989 .
[43] G. Pollott,et al. The relationship between Holstein bull breeding values for milk yield derived in both the UK and Kenya , 2002 .
[44] A. Okeyo,et al. Effects of parity and previous parous status on reproductive and productive performance of Kenya Boran cows , 1998 .
[45] H. Burrow. Variances and covariances between productive and adaptive traits and temperament in a composite breed of tropical beef cattle , 2001 .
[46] J. Gibson. Economic weights and index selection of milk production traits when multiple production quotas apply , 1989 .
[47] R. Ponzoni. Genetic Improvement of Hair Sheep in the Tropics , 1992 .
[48] J. Urioste,et al. Breeding objectives for pasture-fed Uruguayan beef cattle , 1998 .
[49] A. Kahi. Genetic and economic aspects of breeding for dairy production in Kenya. , 2000 .
[50] O. Hanotte,et al. Zebu cattle of Kenya: Uses, performance, farmer preferences, measures of genetic diversity and options for improved use , 2001 .
[51] I. Franklin. Breeding ruminants for the tropics , 1986 .
[52] A. V. Zárate,et al. INTEGRATING GENETIC IMPROVEMENT INTO LIVESTOCK DEVELOPMENT IN MEDIUM- TO LOW-INPUT PRODUCTION SYSTEMS , 2002 .
[53] W. G. Hill. Investment appraisal for national breeding programmes , 1971 .
[54] Norbert Reinsch,et al. Economic values in dairy cattle breeding, with special reference to functional traits. Report of an EAAP-working group , 1996 .
[55] L. Aass. Variation in carcass and meat quality traits and their relations to growth in dual purpose cattle , 1996 .
[56] P. Bird,et al. The choice of discount rate in animal breeding investment appraisal. , 1980 .
[57] Charles Smith. [Genetic improvement of livestock, using nucleus breeding units] , 1988 .
[58] G. Nitter,et al. Developing breeding schemes for pasture based dairy production systems in Kenya , 2004 .
[59] C. Morris,et al. Genetic improvement of beef cattle in New Zealand: breeding objectives , 1992 .
[60] J. Rege,et al. Genetic resistance to diseases and other stresses in improvement of ruminant livestock in the tropics , 1994 .
[61] G. Davis. Genetic parameters for tropical beef cattle in northern Australia: a review , 1993 .