Estimation of correlations between ewe litter size and maternal effects on lamb weights in Merino sheep

Genetics Selection Evolution

Volumn 30, Issue 5, 1998, Pages 493-501

  Analla, Mohamed ^a   Serradill, Juan Manuel ^b  

^a ABDELMALEK ESSAADI UNIVERSITY   (Morocco)

^b UNIVERSITY OF CÓRDOBA   (Spain)

Author keywords

Correlations; Litter size; Maternal effects; Sheep; Weight

Indexed keywords

AGRICULTURE; ARTICLE; BODY WEIGHT; BREEDING; CONTROLLED STUDY; CORRELATION FUNCTION; ENVIRONMENTAL FACTOR; FEMALE; LAMB; MALE; MEAT; MOTHER; NONHUMAN;

OVIS; OVIS ARIES;

EID: 0031743195     PISSN: 0999193X     EISSN: None     Source Type: Journal    
DOI: 10.1051/gse:19980506     Document Type: Article

References (28)

1. Analla M., Muñoz-Serrano A., Cruz J.M., Serradilla J.M., Estimation of genetic parameters of growth traits in Segureña lambs, J. Anim. Breed. Genet. 112 (1995) 183-190.
2. Analla M., Muñoz-Serrano A., Serradilla J.M., Analysis of the genetic relationship between litter size and weight traits in Segureña sheep, Can. J. Anim, Sci. 77 (1997) 17-21.
3. Black J.L., Growth and development of lambs, in: Haresign W. (Ed.), Sheep Production, Butterworths, London, 1983, pp. 21-58.
4. Bradford G.E., The role of maternal effects in animal breeding: VII - Maternal effects in sheep, J. Anim. Sci. 35 (1972) 1324-1334.
5. Brukner C.M., Slanger W.D., Symmetric differences squared and analysis of variance procedures for estimating genetic and environmental variances and covariances for beef cattle weaning weight: II -Estimates from a data set, J. Anim. Sci. 63 (1986) 1794-1803.
6. Cantet R.J.C., Kress D.D., Anderson D.C., Doornobs D.E., Burfening P.J., Blackwell R.L., Direct and maternal variances and covariances and maternal phenotypic effects on preweaning growth of beef cattle, J. Anim. Sci. 66 (1988) 648-660.
7. Davis G.P., Kinghorn B.P., Genetic and phenotypic parameters for growth, wool production and reproduction traits in a line of Merino sheep, in: Dickerson G.E., Johnson R.K. (Eds.), Proceedings of the 3rd World Congress on Genetics Applied to Livestock Production. Lincoln, vol. 11, 1986, pp. 145-150.
8. Dickerson G.E., Composition of hog carcasses as influenced by heritable differences in rate and economy of gain. Iowa State College of Agriculture Res. Bull. 354 (1947) 489-524.
9. Foulley J.L., Manfredi E., Approches statistiques de l'évaluation génétique des reproducteurs pour des caractères binaires à seuils. Genet. Sel. Evol. 23 (1991) 309-338.
10. Gabiña D., Improvement of reproductive performance of Rasa Aragonesa flocks in frequent lambing systems. II - Repeatability and heritability of sexual precocity, fertility and litter size. Selection strategies, Livest. Prod. Sci. 22 (1989) 87-98.
11. Hohenbocken W.D., Brinks J.S., Relationship between direct and maternal effects on growth in Herefords: II - Partition of covariance between relatives, J. Anim. Sci. 32 (1971) 26-34.
12. Jensen J., Sire evaluation for type traits using linear and nonlinear procedures, Livest. Prod. Sci. 15 (1986) 165-171.
13. Jurado J.J., Alonso A., Alenda R., Selection for growth in a Spanish Merino flock, J. Anim. Sci. 72 (1994) 1433-1440.
14. Mäntysaari E.A., Quaas R.L., Gröhn Y.T., Simulation study on covariance components estimation for two binary traits in an underlying continuous scale, J. Dairy Sci. 75 (1991) 580-591.
15. Maria G.A., Boldman K.G., Van Vleck L.D., Estimates of variances due to direct and maternal effects for growth traits of Romanov sheep, J. Anim. Sci. 71 (1993) 845-849.
16. Matos C.A.P., Thomas D.L., Gianola D., Templman J., Young L.D., Genetic analysis of discrete reproductive traits in sheep using linear and non linear models: I - Estimation of genetic parameters, J. Anim. Sci. 75 (1997) 76-87.
17. Matos C.A.P., Thomas D.L., Gianola D., Pérez-Enciso M., Young L.D., Genetic analysis of discrete reproductive traits in sheep using linear and non linear models. II - Goodness of fit and predictive ability, J. Anim. Sci. 75 (1997) 88-94.
18. Meijering A., Gianola D., Linear versus nonlinear methods of sire evaluation for categorical traits: a simulation study, Genet. Sel. Evol. 17 (1985) 115-132.
19. Meyer K., DFREML version 2.1 user's notes, Animal Genetics and Breeding Unit, University of New England, Armidale, Australia, 1993.
20. Olesen I., Pérez-Enciso M., Gianola D., Thomas D.L., A comparison of normal and nonnormal mixed models for number of lambs born in Norwegian sheep, J. Anim. Sci. 72 (1994) 1166-1173.
21. Patterson H.D., Thompson R., Recovery of interblock information when block sizes are unequal, Biometrika 58 (1971) 545-558.
22. Quaas R.L., Computing the diagonal elements and inverse of a large numerator relationship matrix, Biometrics 32 (1976) 949-953.
23. Renand G., Janss L.L.G., Gaillard J., Sire evaluation for direct effects on dystocia by linear and threshold models, in: Hill W.G., Thompson R., Wolliams J.A. (Eds.). Proceedings of the 4th World Congress on Genetics Applied to Livestock Production, Edinburgh, vol. 13, 1990, pp. 465-467.
24. Snell E.J., A scaling procedure for ordered categorical data, Biometrics 20 (1964) 594-607.
25. Weller J.I., Misztal I., Gianola D., Genetic analysis of dystocia and calf mortality in Israeli-Holstein by threshold and linear models, J. Dairy Sci. 71 (1988) 2491-2501.
26. Willham R.L., The covariance between relatives for characters composed of components contributed by related individuals, Biometrics 19 (1963) 18-27.
27. Willham R.L., Problems in estimating maternal effects, Livest. Prod. Sci. 7 (1980) 18-27.
28. Wright S., Coefficients of inbreeding and relationship, Am. Nat. 56 (1922) 330-338.