1 |
Juarez, H. C., P. A. Oltenaeu, R. W. Blake, C. E. McCullock and E. G. Cienfuegos-Rivas. 1998. Effect of herd environment level on the genetic and phenotypic relationship among milk yield, somatic cell score and fertility. J. Anim. Sci. 76, Suppl. 61.
|
2 |
Vleck, V. D. 1979. Summary of methods for estimating genetic parameters using simple statistical models. Dep. of Anim. Sci. Cornell Univ, USA.
|
3 |
Nawaz M., M. Anwar, M. A. Mirza and R. Nawaz. 1993. Study of comparative milk production and reproduction of Jersey cattle under USA and Pakistan conditions. Asian-Aus. J. Anim. Sci. 6:549-553.
|
4 |
Compos, C. J., M. S. Wilcox, C. M. Becerril and A. Diz. 1994. Genetic parameters for yield and reproductive traits of Holstein and Jersey cattle in Florida. J. Dairy Sci. 77:867-883.
DOI
ScienceOn
|
5 |
Meyn, K. 1991. The contribution of European cattle breeding to cattle production in the third world. Anim. Res. Dev. 34:89-99.
|
6 |
Pakistan Statistical Year Book 2000. Federal Bureau of Statistic, Statistic Division Government of Pakistan, April, 2000.
|
7 |
Strabel, T. and I. MisZtal. 1999. Genetic parameters for first and second lactation milk yield of Polish Black and White cattle with random regression test-day models J. Dairy Sci. 82:2805-2810.
DOI
PUBMED
ScienceOn
|
8 |
Lee, J. K., P. M. Van Raden, H. D. Norman, G. R. Wiggans and T. R. Meinert. 1977. Relationship of yield during early lactation and days open during current lactation with 305-day yield. J. Dairy Sci. 80:771-776.
DOI
ScienceOn
|
9 |
Madsen, O. 1976. Red Danish cattle in the tropics. Wld. Anim. Rev. 32:25-32.
|
10 |
Menzi, M., W. Kropt and W. V. Sieben Thal. 1982. An exotic population under a tropical environment. Wld. Anim. Rev. 44:24-29.
|
11 |
Dematawewa, C. M. B. and P. J. Berger. 1998. Genetic and phenotypic parameters for 305-day yield, fertility and survival in Holsteins. J. Dairy Sci. 81:2700-2709.
DOI
PUBMED
ScienceOn
|
12 |
Livestock Census 1996. Agricultural Census Organization, Statistic Division, Government of Pakistan, Gulberg, Lahore.
|
13 |
Sadana, D. K. and S. B. Basu. 1983. Reproductive performance of exotic breeds in India. Indian J. Dairy Sci. 36(2):121-124.
|