Genetic and environmental causes of variation in milk production traits of Sahiwal cattle in Pakistan

Animal Science

Volumn 66, Issue 2, 1998, Pages 307-318

  Dahlin, A ^a   Khan, U N ^b   Zafar, A H ^c   Saleem, M ^c   Chaudhry, M A ^c   Philipsson, J ^a  

^a SWEDISH UNIVERSITY OF AGRICULTURAL SCIENCES   (Sweden)

^b NATIONAL AGRICULTURAL RESEARCH CENTRE   (Pakistan)

^c Livestock Production Research Institute   (Pakistan)

Author keywords

Environmental factors; Genetic parameters; Milk production; Sahiwal

Indexed keywords

ANIMALIA; BOS TAURUS;

EID: 0032056179     PISSN: 13577298     EISSN: None     Source Type: Journal    
DOI: 10.1017/S1357729800009437     Document Type: Article

References (40)

1. Ahmad, Z., Ahmad, M. D. and Gill, R. A. 1974. Hereditary variation in reproductive traits of Sahiwal cattle. Pakistan Journal of Agricultural Sciences 11: 1-8.
2. Ahmad, Z., Ahmad, M. D., Qureshi, A. W., Gill, R. A. and Fahmy, S. K. 1978. Genetic progress through selection in performance traits of Sahiwal cattle. Agricultural Research Review, Egypt 56: 1-6.
3. Ahmad, Z., Ahmed, W., Ahmad, M. D. and Chaudhry, R. A. 1976. Inheritance of milk yield in Sahiwal cows. Pakistan Journal of Agricultural Sciences 13: 57-62.
4. Bagnato, A. and Oltenacu, P. A. 1993. Genetic study of fertility traits and production in different parities in Italian Friesian cattle. Journal of Animal Breeding and Genetics 110: 126-134.
5. Boldman, K. G. and Freeman, A. E. 1990. Adjustment for heterogeneity of variances by herd production level in dairy cow and sire evaluation. Journal of Dairy Science 73: 503-512.
6. Campos, M. S., Wilcox, C. J., Becerril, C. M. and Diz, A. 1994. Genetic parameters for yield and reproductive traits of Holstein and Jersey cattle in Florida. Journal of Dairy Science 77: 867-873.
7. Chaudhry, M. Z. 1988. Progeny testing of Sahiwal bulls. Journal of Animal Health and Production, Pakistan 8: 64-71.
8. Christensen, L. G., Madsen, P. and Petersen, J. 1982. The influence of incorrect sire identification on the estimates of genetic parameters and breeding values. Proceedings of the second world congress on genetics applied to livestock production, Madrid, vol. 7, pp. 200-208.
9. Dahlin, A., Khan, U. N., Zafar, A. H., Saleem, M., Chaudhry, M. A. and Philipsson, J. 1995. Population structure of the Sahiwal breed in Pakistan. Animal Science 60: 163-168.
10. Falconer, D. S. 1981. Introduction to quantitative genetics, second edition. Longman, Harlow.
11. Food and Agriculture Organization. 1992. The management of global animal genetic resources. FAO animal production and health paper, no. 104. Food and Agriculture Organization of the United Nations, Rome.
12. García-Cortés, L. A., Moreno, C., Varona, L., Rico, M. and Altarriba, J. 1995. (Co)variance component estimation of yield traits between different lactations using an animal model. Livestock Production Science 43: 111-117.
13. Groeneveld, E. and Kovac, M. 1990. A generalized computing procedure for setting up and solving mixed linear models. Journal of Dairy Science 73: 513-531.
14. Hill, W. G. 1984. On selection among groups with heterogeneous variance. Animal Production 39: 473-477.
15. Hill, W. G., Edwards, M. R., Ahmed, M.-K. A. and Thompson, R. 1983. Heritability of milk yield and composition at different levels and variability of production. Animal Production 36: 59-68.
16. Jensen, J. and Madsen, P. 1994. DMU: a package for the analysis of multivariate mixed models. Proceedings of the fifth world congress on genetics applied to livestock production, Guelph, vol. 22, pp. 45-46.
17. Jensen, J., Mäntysaari, E. A., Madsen, P. and Thompson, R. 1996-97. Residual maximum likelihood estimation of (co)variance components in multivariate mixed linear models using average information. Journal of the Indian Society of Agricultural Statistics 49: (Golden Jubileum No.) 215-236.
18. Kennedy, B. W., Schaeffer, L. R. and Sorensen, D. A. 1988. Genetic properties of animal models. Journal of Dairy Science 71: (suppl. 2) 17-26.
19. Lin, C. Y. and Lee, A. J. 1986. Sequential estimation of genetic and phenotypic parameters in multitrait mixed model analysis. Journal of Dairy Science 69: 2696-2703.
20. Madalena, F. E. 1988. A note on the effect of variation of lactation length on the efficiency of tropical cattle selection for milk yield. Theoretical and Applied Genetics 76: 830-834.
21. Maule, J. P. 1990. The cattle of the tropics. University of Edinburgh Centre for Tropical Veterinary Medicine, Edinburgh.
22. Meuwissen, T. H. E. and Werf, J. H. J. van der. 1993. Impact of heterogeneous within herd variances on dairy cattle breeding schemes: a simulation study. Livestock Production Science 33: 31-41.
23. Misztal, I. 1994. Comparison of computing properties of derivative and derivative-free algorithms in variance-component estimation by REML. Journal of Animal Breeding and Genetics 111: 346-355.
24. Morales, F., Blake, R. W., Stanton, T. L. and Hahn, M. V. 1989. Effects of age, parity, season of calving, and sire on milk yield of Carora cows in Venezuela. Journal of Dairy Science 72: 2161-2169.
25. Pösö, J. and Mäntysaari, E. A. 1996. Genetic relationships between reproductive disorders, operational days open and milk yield. Livestock Production Science 46: 41-48.
26. Ptak, E. and Schaeffer, L. R. 1993. Use of test day yields for genetic evaluation of dairy sires and cows. Livestock Production Science 34: 23-34.
27. Qureshi, M. R., Tahir, M. and Ahmed, W. 1979. Genetic factors influencing milk yield in Sahiwal cows. Journal of Animal Sciences, Pakistan 1: 45-48.
28. Reddy, K. M. and Nagarcenkar, R. 1989. Genetic studies among indigenous milch cattle. Indian Veterinary Journal 66: 825-829.
29. Rege, J. E. O., Lomole, M. A. and Wakhungu, J. W. 1992. 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. Journal of Animal Breeding and Genetics 109: 364-373.
30. Rege, J. E. O. and Wakhungu, J. W. 1992. An evaluation of a long-term breeding programme in a closed Sahiwal herd in Kenya. II. Genetic and phenotypic trends and levels of inbreeding. Journal of Animal Breeding and Genetics 109: 374-384.
31. Ribas, M. and Perez, B. 1990. Monthly test day milk records and yield at 244 days. II. Genetic parameters in first lactation. Cuban Journal of Agricultural Science 24: 139-144.
32. Schaar, J., Brännäng, E. and Meskel, L. B. 1981. Breeding activities of the Ethio-Swedish integrated rural development project. II. Milk production of zebu and crossbred cattle. World Animal Review 37: 31-36.
33. Shah, I. H. and Zafar, A. H. 1986. Inheritance of age at first calving and first lactation yield in Sahiwal cows. Pakistan Veterinary Journal 6: 60-62.
34. Short, T. H., Blake, R. W., Quaas, R. L. and Vleck, L. D. van. 1990. Heterogeneous within-herd variance. 1. Genetic parameters for first and second lactation milk yields of grade Holstein cows. Journal of Dairy Science 73: 3312-3320.
35. Sigurdsson, A., Banos, G. and Philipsson, J. 1992. Sire evaluation procedures for dairy production traits practised in various countries, 1992. INTERBULL bulletin no. 5. Swedish University of Agricultural Sciences, Uppsala.
36. Sorensen, D. A. and Kennedy, B. W. 1984. Estimation of genetic variances from unselected and selected populations. Journal of Animal Science 59: 1213-1223.
37. Strandberg, E. and Danell, B. 1989. Genetic and phenotypic parameters for production and days open in the first three lactations of Swedish dairy cattle. Acta Agricultural Scandinavica 39: 203-215.
38. Syrstad, O. 1993. Milk yield and lactation length in tropical cattle. World Animal Review 74/75: 68-72.
39. Visscher, P. M. and Thompson, R. 1992a. Univariate and multivariate parameter estimates for milk production traits using an animal model. I. Description and results of REML analyses. Genetics, Selection, Evolution 24: 415-430.
40. Visscher, P. M. and Thompson, R. 1992b. Comparisons between genetic variances estimated from different types of relatives in dairy cattle. Animal Production 55: 315-320.