Serdar DURU, Salahattin KUMLU, Erdoğan TUNCEL

Estimation of variance components and genetic parameters for type traits and milk yield in Holstein cattle

This research was conducted to estimate variance components and genetic parameters for type traits and milk yield in Holstein-Friesian cattle. In this study, 597 daughters of 158 sires in 128 herds were classified. In the data analysis, type scores for 354 daughters bred within 70 herds sired by 46 sires that had at least 3 daughters, and 304 lactation records for 206 daughters within 56 herds sired by 37 sires, were considered. For estimation of variance components and correlations among the traits, the MTDFREML package program was used. The mean stature was 145.56 cm. Means for linear traits varied from 4.47 for fore teat placement to 6.42 for body depth. Heritability for fore udder attachment and front teat placement were both 0.00. Heritability for linear traits estimated for lowest and highest dairy character values and for body capacity were 0.06 and 0.62, respectively. Values for heritability and repeatability of milk yield were 0.20 and 0.20, respectively.

Anahtar Kelimeler:

Key words: Holstein-Friesian, type traits, variance components, animal model

Estimation of variance components and genetic parameters for type traits and milk yield in Holstein cattle

Keywords:

Key words: Holstein-Friesian, type traits, variance components, animal model,

PDF

___

Bertrand, J.A., Berger, P.J., Freeman, A.E., Kelley, D.H.: Profi tability in daughters of high versus average Holstein sires selected for milk yield of daughters. J. Dairy Sci., 1985; 68: 2287–2294. 2. Rogers, G.W., McDaniel, B.T.: Th e usefulness of selection for yield and functional type traits. J. Dairy Sci., 1989; 72: 187–193.
Klassen, D.J., Monardes, H.G., Jairath, L., Cue, R.I., Hayes, J.F.: Genetic correlations between lifetime production and linearized type in Canadian Holsteins. J. Dairy Sci., 1992; 75: 2272–2282. 8. Visscher, P.M., Goddard, M.E.: Genetic parameters for milk yield, survival, workability, and type traits for Australian dairy cattle. J. Dairy Sci., 1995; 78: 205–220. 9. Gengler, N., Wiggans, G.R., Wright, J.R., Norman, H.D., Wolfe, C.W.: Estimation of (co)variance components for Jersey type traits using a repeatability model. J. Dairy Sci., 1997; 80: 1801– 1806.
Gengler, N., Wiggans, G.R., Wright, J.R.: Animal model genetic evaluation of type traits for fi ve dairy cattle breeds. J. Dairy Sci., 1999; 82: 1350.
Uribe, H., Schaeff er, L.R., Jamrozik, J., Lawlor, T.J.: Genetic evaluation of dairy cattle for conformation traits using random regression models. J. Anim. Breed. Genet., 2000; 117: 247–259.
DeGroot, B.J., Keown, J.F., Van Vleck, L.D., Marotz, E.L.: Genetic parameters and responses of linear type, yield traits, and somatic cell scores to divergent selection for predicted transmitting ability for type in Holsteins. J. Dairy Sci., 2002; 85: 1578–1585.
Pérez-Cabal, M.A., Alenda, R.: Genetic relationships between lifetime profi t and type traits in Spanish Holstein cows. J. Dairy Sci., 2002; 85: 3480–3491.
SAS Institute: JMP 3.2 Statistics Made Visual. SAS, Cary, North Carolina. 1995.
International Committee for Animal Recording: Guidelines. Section 5: ICAR Standard Methods of Genetic Evaluation. ICAR, Rome. 2002.
World Holstein–Friesian Federation: International Type Evaluation of Dairy Cattle. WHFF, [place unknown]. 2002.
Minitab, Inc.: Minitab Release 12.1 Version for Windows. Minitab, State College, Pennsylvania. 1998.
Harvey, R.W.: LSMLMW with PARMCARD. PC Version. Ohio State University, Columbus, Ohio. 1986.
Boldman, K.G., Kriese, L.A., Van Vleck, L.D., Van Tassell, C.P., Kachman S.D.: A Manual for Use of MTDFREML. A Set of Programs to Obtain Estimates of Variances and Covariances [Draft ]. U.S. Department of Agriculture, Agricultural Research Service, Washington, DC. 1995.
Mrode, R.A.: Linear Models for the Prediction of Animal Breeding Values. CAB International, Wallingford, UK, 1996.
Kumlu, S., Akman, N.: Milk yield and reproductive traits of Holstein Friesian breeding herds in Turkey. J. Lalahan Anim. Res. Inst., 1999; 39: 1–16 (in Turkish with English abstract).
Özcan, K., Terlemez, T.: Soykütüğü İstatistikleri. Damızlık Sığır Yetiştiricileri Dergisi Vol. 6. Türkiye Damızlık Sığır Yetiştiricileri Merkez Birliği, Ankara. 2004 (in Turkish).
Mrode, R.A., Swanson, G.J.T., Lindberg, C.M.: Genetic correlations of somatic cell count and conformation traits with herd life in dairy breeds, with an application to national genetic evaluations for herd life in the United Kingdom. Livest. Prod. Sci., 2000; 65: 119–130.
Pryce, J.E., Coff ey, M.P., Brotherstone, S.: Th e genetic relationship between calving interval, body condition score and linear type and management traits in registered Holsteins. J. Dairy Sci., 2000; 83: 2664–2671.
Royal, M.D., Pryce, J.E., Woolliams, J.A., Flint, A.P.F.: Th e genetic relationship between commencement of luteal activity and calving interval, body condition score, production, and linear type traits in Holstein-Friesian dairy cattle. J. Dairy Sci., 2002; 85: 3071–3080.
Veerkamp, R.F., Gerritsen, C.L.M., Koenen, E.P.C., Hamoen, A., De Jong, G.: Evaluation of classifi ers that score linear type traits and body condition score using common sires. J. Dairy Sci., 2002; 85: 976–983.
Vereinigte Informationssysteme Tierhaltung. Estimation of Breeding Values for Milk Production Traits, Somatic Cell Score, Conformation, Productive Life and Reproduction Traits in German Dairy Cattle. VIT, Verden, Germany. 2003.
Coöperatie Rundvee Verbetering. Breeding Value Estimation for Conformation Traits. NRS Handbook Chapter E8. CRV, Arnhem, Netherlands. 2003.
International Bull Evaluation Service. Interbull Routine Genetic Evaluation for Conformation Traits, August 2003. Interbull, Uppsala, Sweden. Available at http://www-interbull. slu.se/conform/framesida-conf.htm.
Rogers, G.W.: Index selection using milk yield, somatic cell score, udder depth, teat placement, and foot angle. J. Dairy Sci., 1993; 76: 664–670.