Characteristics of bull-dam herds

• Autorzy: Jagusiak W. , Zarnecki A.
• Języki publikacji: EN

Abstrakty

EN

The purpose of this paper was to characterise bull–dam herds by examining herd phenotypic and genetic averages and variances, and their relationships.

Słowa kluczowe

EN

cow; Poland; cattle; bull-dam herd; animal breeding; breeding programme; cattle population; dairy cattle

• Wydawca: -
• Czasopismo: Electronic Journal of Polish Agricultural Universities. Series Animal Husbandry
• Rocznik: 2002
• Tom: 05
• Numer: 1
• Opis fizyczny: http://www.ejpau.media.pl/series/volume5/issue1/animal/art-07.html

Twórcy

autor

Jagusiak W.

• Agricultural University of Krakow, A.Mickiewicza 24/28, 30-059 Krakow, Poland

autor

Zarnecki A.

Bibliografia

• Dong M. C., Mao I. L., 1990. Heterogeneity of (co) variance and heritability in different levels of intraherd milk production variance and of herd average. J. Dairy Sci., 73, 843–851.
• Hill C. R., Edwards M. R. , Ahmed M. K. A., Thomas R., 1983. Heritability of milk yield and composition at different levels of variability of production. Anim. Prod., 36, 59.
• Jagusiak W., Żarnecki A., 2000. The selection index and single– and multi–trait animal model evaluation of Polish Black–and–White cows. J. Appl. Genet., 41 (3), 171–179.
• Mao I. L., Dong M. C., Meadows C. E., 1991. Selection of bulls for progeny testing using pedigree indices and characteristics of potential bull–dams’ herds. J. Dairy Sci., 74, 2747–2756.
• Mao I. L., Wilhelm A. E., Dong M. C., Meadows C. E., 1991. Comparison of bull–dam herds, progeny testing herds, and other dairy herd improvement herds. J. Dairy Sci., 74, 1413–1419.
• SAS Institute Inc., Cary, NC, USA. 2001. Proprietary Software Release 8.2.
• Smothers C. D., Pearson R. E., Vinson W. E., 1991. Relationships among phenotypic standard deviations and herd level for type and their effect on selection response in United States Holstein. J. Dairy Sci., 74, 637–644.
• Vinson W. E., 1987. Potential bias in genetic evaluations from differences in variation within herds. J. Dary Sci., 70, 2450–2455.
• Westell, R. A., Quaas R. L., Van Vleck L. D., 1988. Genetic groups in an animal model. J. Dairy Sci., 71, 1310–1320.
• Wilhelm A. E. , Mao I. L., 1989. Relationships between characteristics of herd of bull–dams and predicting transmitting ability of young bulls. J. Dairy Sci., 72, 2395–2401.