Haley C S, Av alos E, Smith C. Selection for litter size in the pig. Anim Br eed Abstr, 1988, 56: 317~ 332
[2]
Tartar M, Bo let G. Application de la th?orie des indices de s?l ection ? des caract?rs r?p?t?s. Exemple delas?lection sur la prolificit?chez le proc Gen Sel Evol, 1984, 16: 319~ 334
[3]
Gomez E. La selecti?n del tama?n o de camada en el conejo de carne. Influencia de los efectos maternos y de la hetero geneidad gen?t ica entre partos:1PhD Thesis2. UP Valencia, 1994
[4]
Estimates of genetic parameters for litter size at differ ent parities in pigs. Livest Prod Sci, 1997, 47: 149~156
[5]
Vangen O. Genetic control of reproduction in Pig: Form parturition to puberty. In: Proc 3th World Congr on Gene Appl Livest Prod. Nebraska, 1986, 11: 168~ 179