Genetic Parameters for Linear Udder Traits of Dairy Ewes

Journal of Dairy Science

Volumn 80, Issue 3, 1997, Pages 601-605

  Fernandez G ^a,b   Baro, J A ^a   De La Fuente, L F ^a   San Primitivo, F ^a  

^a UNIVERSITY OF LEÓN   (Spain)

^b UNIVERSIDAD DE LA REPÚBLICA   (Uruguay)

Author keywords

Ewes; Genetic parameters; Milkability; Udder traits

Indexed keywords

ANIMALIA; BOS TAURUS; OVIS;

ANIMAL; ARTICLE; BIOLOGICAL MODEL; CATTLE; CELL COUNT; CYTOLOGY; DAIRYING; FEMALE; GENETICS; HISTOLOGY; LACTATION; MILK; PHENOTYPE; SHEEP; UDDER;

ANIMALS; CATTLE; CELL COUNT; DAIRYING; FEMALE; LACTATION; MAMMARY GLANDS, ANIMAL; MILK; MODELS, GENETIC; PHENOTYPE; SHEEP;

EID: 0031085745     PISSN: 00220302     EISSN: None     Source Type: Journal    
DOI: 10.3168/jds.S0022-0302(97)75976-9     Document Type: Article

References (30)

1. Arranz, J., J. M. López de Munain, and J. Lara. 1989. Evolución de las características morfológicas de la ubre de ovejas de raza Latxa a lo largo del período de ordeño. Page 80 in Proc. 4th Int. Symp. Machine Milking Small Ruminants. Int. Com., Tel Aviv, Israel.
2. Baro, J. A., J. A. Carriedo, and F. San Primitivo. 1994. Genetic parameters of test day measures for somatic cell count, milk yield, and protein percentage of milking ewes. J. Dairy Sci 77: 2658.
3. Brotherstone, S. 1994. Genetic and phenotypic correlations between linear type traits and production traits in Holstein-Friesian dairy cattle. Anim. Prod. 59:183.
4. Carriedo, J. A., J. A. Baro, L. F. de la Fuente, and F. San Primitivo. 1994. Genetic parameters for milk yield in dairy sheep. J. Anim. Breed. Genet. 112:59.
5. Casu, S., F. Barillet, R. Carta, and S. Sanna. 1989. Amelioration genetique de la forme de la mamelle de la brebis Sarde en vue de la traite mécanique: résultats préliminaires. Page 104 in Proc. 4th Int. Symp. Machine Milking Small Ruminants. Int. Com., Tel Aviv, Israel.
6. Casu, S., R. Carta, and G. Ruda. 1983. Morphologie de la mamelle et aptitude a la traite mécanique de la brebis Sarde. Page 592 in Proc. 3th Int. Symp. Machine Milking Ruminants. Com. Español, Valladolid, Spain.
7. Charon, K. M. 1990. Genetic parameters of the morphological traits of sheep udder. World Rev. Anim. Prod. 25:73.
8. Charon, K. M., and W. Skolasinski. 1988. The genetic variability of the resistance of sheep to mastitis and the possibility of its application in breeding. Page 640 in Proc. 3rd World Congr. Sheep Cattle Breeding. Int. Com., Paris, France.
9. de la Fuente, L. F., J. A. Baro, and F. San Primitivo. 1996. Breeding programme for the Spanish Churra sheep breed. Cahiers Options Méditerranéennes 11:165.
10. 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.
11. Fernández, G., P. Alvarez, F. San Primitivo, and L. F. de la Fuente. 1995. Factors affecting variation of udder traits of dairy ewes. J. Dairy Sci. 78:842.
12. Fernández, G., L. F. de la Fuente, F. San Primitivo, and C. Gonzalo. 1995. Linear udder traits and somatic cell count in dairy sheep. Page 99 in Abstracts of Lectures and Posters Sem. Production and Utilization of Ewes' and Goats' Milk. Int. Dairy Fed., Brussels, Belgium.
13. Foster, W. W., A. E. Freeman, P. J. Berger, and A. Kuck. 1988. Linear type trait analysis with genetic parameter estimation. J. Dairy Sci. 71:223.
14. Gootwine, E., B. Alef, and S. Gadeesh. 1980. Udder conformation and its heritability in the Assaf (Awassi × East Friesian) cross of dairy sheep in Israel. Ann. Génét. Sél. Anim. 12:9.
15. Jatsch, O., and R. Sagi. 1979. Machine milkability as related to dairy yield and its fractions in dairy ewes. Ann. Zootech. (Paris) 28:251.
16. Klassen, D. J., H. G. Monardes, L. Jairath, R. Y. Cue, and J. F. Hayes. 1992. Genetic correlations between lifetime production and linearized type in Canadian Holsteins. J. Dairy Sci. 75: 2272.
17. Kukovics, S., A. Nagy, A. Molnar, and M. Abraham. 1993. Relationships among udder types and relative udder size and milk production as well as their changes during the succesives lactations. Page 40 in Proc. 5th Int. Symp. Machine Milking Small Ruminants. S. Kukovics Publ., Budapest, Hungary.
18. 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.
19. Labussière, J., D. Dotchewski, and J. F. Combaud. 1981. Caractéristiques morphologiques de la mamelle des brebis Lacaune. Méthodologie pour l'obtention des données. Relations avec l'aptitude à la traite. Ann. Zootech. (Paris). 30:115.
20. Marco, J. C. 1994. Mastitis en la oveja Latxa: epidemiología, diagnóstico y control. Ph.D. Diss., Univ. Zaragoza, Zaragoza, Spain.
21. Mavrogenis, A. P., C. Papachristoforou, P. Lysandrides, and A. Roushias. 1988. Environmental and genetics factors affecting udder characters and milk production in Chios sheep. Génét. Sel. Evol. 20:477.
22. Meyer, K. 1991. Derivate-free restricted maximum likelihood (DFREML). Computer programs user guide. Univ. New England, Armidale, New South Wales, Australia.
23. Meyer, K., S. Brotherstone, W. G. Hill, and M. Edwards. 1987. Inheritance of linear type traits in dairy cattle and correlations with milk production. Anim. Prod. 44:1.
24. Mikus, M. 1978. Study of the mutual relationships between dimension of the udder with regard to improvement of the sheep for machine milking. Page 102 in Proc. 2nd Int. Symp. Machine Milking Small Ruminants. Inst. Nat. Rech. Agron., Alghero, Italy.
25. Misztal, I., T. J. Lawlor, T. H. Short, and P. M. VanRaden. 1992. Multiple-trait estimation of variance components of yield and type traits using an animal model. J. Dairy Sci. 75:544.
26. Rogers, G. W., G. L. Hargrove, T. J. Lawlor, Jr., and J. L. Ebersole. 1991. Correlations among linear type traits and somatic cell counts. J. Dairy Sci. 74:1087.
27. Sagi, R., and M. Morag. 1974. Udder conformation, milk yield and milk fractionation in the dairy ewe. Ann. Zootech. (Paris) 23:185.
28. Schaeffer, G. B., W. E. Vinson, R. E. Pearson, and R. G. Long. 1985. Genetic and phenotypic relationships among type traits scored linearly in Holstein. J. Dairy Sci. 68:2984.
29. Short, T. H., and T. J. Lawlor. 1992. Genetics parameters of conformation traits, milk yield, and herd life in Holsteins. J. Dairy Sci. 75:1987.
30. Thompson, J. R., K. L. Lee, A. E. Freeman, and L. P. Johnson. 1983. Evaluation of linearized type appraisal system for Holstein cattle. J. Dairy Sci. 66:325.