Genetic parameters of udder traits, somatic cell score, and milk yield in Latxa sheep

Journal of Dairy Science

Volumn 88, Issue 6, 2005, Pages 2238-2245

  Legarra, A ^a   Ugarte, E ^a  

^a NEIKER and a Vaccine producing Commercial Company CZVSL   (Spain)

Author keywords

Conformation; Dairy sheep; Mastitis; Udder

Indexed keywords

OVIS ARIES;

EID: 26444528394     PISSN: 00220302     EISSN: None     Source Type: Journal    
DOI: 10.3168/jds.S0022-0302(05)72899-X     Document Type: Article

References (34)

1. Ali, A. K. A., and G. E. Shook. 1980. An optimum transformation for somatic cell count in milk. J. Dairy Sci. 63:487-490.
2. Barillet, F., R. Rupp, S. Mignon-Grasteau, J. M. Astruc, and M. Jacquin. 2001. Genetic analysis for mastitis resistance and milk somatic cell score in French Lacaune dairy shep. Genet. Sel. Evol. 33:397-415.
3. Bergonier, D., R. De Crémoux, R. Rupp, G. Lagriffoul, and X. Berthelot. 2003. Mastitis of dairy small ruminants. Vet. Res. 34:689-716.
4. Boettcher, P. J., J. C. M. Dekkers, and B. W. Kolstad. 1998. Development of an udder health index for sire selection based on somatic cell score, udder conformation, and milking speed. J. Dairy Sci. 81:1157-1168.
5. Bruckmaier, R. M., G. Paul, H. Mayer, and D. Schams. 1997. Machine milking of Ostfriesian and Lacaune dairy sheep: Udder anatomy, milk ejection and milking characteristics. J. Dairy Res. 64:163-172.
6. Casu, S., P. Fresi, and A. Carta. 2002. Estimation of the genetic parameters of udder traits in Sarda dairy sheep using a sire model with random contemporary groups. Proc. 7th World Congr. Genet. Appl. Livest. Prod., Montpellier, France. CD-ROM communication 09-04.
7. Charon, K. M. 1987. Genetic parameters of the morphological traits of sheep's udder. Pages 1-6 in Proc. 38th Annu. Mtg. EAAP, Lisboa, Portugal. Wageningen Pers., Wageningen, The Netherlands.
8. De la Fuente, L. F., G. Fernández, and F. San Primitivo. 1996. A linear evaluation system for udder traits of dairy ewes. Livest. Prod. Sci. 45:171-178.
9. Dodenhoff, J., L. D. Van Vleck, S. D. Kachman, and R. M. Koch. 1998. Parameter estimates for direct, maternal, and grandmaternal genetic effects for birth weight and weaning weight in Hereford cattle. J. Anim. Sci. 76:2521-2527.
10. El-Saied, U. M., J. A. Carriedo, L. F. De la Fuente, and F. San Primitivo. 1999. Genetic parameters of lactation cell counts and milk and protein yields in dairy ewes. J. Dairy Sci. 82:639-644.
11. Essl, A. 1998. Longevity in dairy cattle breeding: A review. Livest. Prod. Sci. 57:79-89.
12. Jensen, J., E. A. Mäntysaari, P. Madsen, and R. Thompson. 1997. Residual maximum likelihood estimation of (co)variance components in multivariate mixed linear models using average information. J. Ind. Soc. Agric. Stat. 49:215-236.
13. Fernández, G., J. A. Baró, L. F. De la Fuente, and F. San Primitivo. 1997. Genetic parameters for linear udder traits of dairy ewes. J. Dairy Sci. 80:601-605.
14. Gianola, D., and D. Sorensen. 2004. Quantitative genetic models for describing simultaneous and recursive relationships between phenotypes. Genetics 167:1407-1424.
15. International Committee for Animal Recording. 2003. International agreement of recording practices. Online. Available http://www.icar.org. Accessed Mar. 2, 2005.
16. Labussière, J. 1988. Review of physiological and anatomical factors influencing the milking ability of ewes and the organization of milking. Livest. Prod. Sci. 18:253-274.
17. Legarra, A., and E. Ugarte. 2004. A rationale for the inclusion of more traits in the Latxa breeding program. Page 237 in Proc. 55th Annu. Mtg. European Association for Animal Production, Bled, Slovenia. Wageningen Pers., Wageningen, The Netherlands.
18. Legarra, A., E. Ugarte, I. Beltrán de Heredia, and J. Arranz. 2001. Parámetros genéticos y respuesta a diferentes índices de selección de caracteres de morfología mamaria en la raza Latxa. Información Técnica Económica Agraria 22:24-26.
19. Marie, C., M. Jacquin, M. R. Aurel, F. Paille, D. Porte, P. Autran, and F. Barillet. 1998. Déterminisme génétique de la cinétique d'emission du lait selon le potential laitier en race ovine de Lacaune et relations phénotypiques avec la morphologie de la mamelle. Pages 381-388 in Milking and milk production of dairy sheep and goats. Proc. 6th Int. Symp. on the Milking of Small Ruminants. F. Barillet and N. P. Zerras, ed. Athens, Greece. Wageningen Press, Wageningen, The Netherlands.
20. Marie-Etancelin, C., S. Casu, R. Rupp, A. Carta, and F. Barillet. 2001. New objectives of selection related to udder health, morphology, and milkability in dairy sheep. Page 272 in Proc. 52nd Annu. Mtg. of the European Association for Animal Production, Budapest, Hungary. Wageningen Pers., Wageningen, The Netherlands.
21. Mavrogenis, A. P., C. Papachristoforou, P. Lysandrides, and A. Roushias. 1988. Environmental and genetic factors affecting udder characteristics and milk production in Chios sheep. Genet. Sel. Evol. 20:477-488.
22. Meyer, K., S. Brotherstone, and W. G. Hill. 1987. Inheritance of linear type traits in dairy cattle and correlations with milk production. Anim. Prod. 44:1-10.
23. Misztal, I., S. Tsuruta, T. Strabel, B. Auvray, T. Druet, and D. H. Lee. 2002. BLUPF90 and related programs (BGF90). Proc. 7th World Congr. Genet. Appl. Livest. Prod., Montpellier, France. CD-ROM Communication 28-07.
24. Rogers, G. W., G. L. Hargrove, T. J. Lawlor, and J. L. Ebersole. 1991. Correlations among linear type traits and somatic cell counts. J. Dairy Sci. 74:1087-1091.
25. Rupp, R., and D. Boichard. 1999. Genetic parameters for clinical mastitis, somatic cell score, production, udder type traits, and milking ease in first-lactation Holsteins. J. Dairy Sci. 82:2198-2204.
26. Rupp, R., D. Boichard, A. Barbat, J. M. Astruc, G. Lagriffoul, and F. Barillet. 2002. Selection for mastitis resistance in French dairy sheep. Proc. 7th World Congr. Genet. Appl. Livest. Prod., Montpellier, France. CD-ROM communication 09-28.
27. Rupp, R., G. Lagriffoul, J. M. Astruc, and F. Barillet. 2003. Genetic parameters for milk somatic cell scores and relationships with production traits in French Lacaune dairy sheep. J. Dairy Sci. 86:1476-1481.
28. SAS Institute. 2000. SAS OnlineDoc, Version 8. SAS Institute Inc., Cary, NC.
29. Serrano, M., M. D. Pérez-Guzmán, V. Montoro, and J. J. Jurado. 2002. Genetic analysis of udder traits in Manchega ewes. Livest. Prod. Sci. 77:355-361.
30. Serrano, M., M. D. Pérez-Guzmán, V. Montoro, and J. J. Jurado. 2003. Genetic analysis of somatic cell count and milk traits in Manchega ewes: Mean lactation and test-day approaches. Livest. Prod. Sci. 84:1-10.
31. Snowder, G. D., L. D. Van Vleck, A. D. Knight, T. R. Kellom, and C. M. Bromley. 2001. Usefulness of subjective ovine milk scores: II. Genetic parameter estimates. J. Anim. Sci. 79:869-876.
32. Ugarte, E., and A. Legarra. 2003. Scientific background of the selection program in the Latxa breed. Options Méditerranéennes Ser. A. 55:91-98.
33. Wickham, B. W. 1979. Genetic parameters and economic values of traits other than production for dairy cattle. Proc. N.Z. Soc. Anim. Prod. 39:180-193.
34. Wiggans, G. R., and G. E. Shook. 1987. A lactation measure of somatic cell count. J. Dairy Sci. 70:2666-2672.