Íslenskar landbúnaðarrannsóknir - 01.03.1977, Side 84

Íslenskar landbúnaðarrannsóknir - 01.03.1977, Side 84
82 ÍSLENZKAR LANDBÚNAÐARRANNSÓKNIR REFERENCES — HEIMILDIR Aðalsteinsson, Stefán, 1977. Maximum likelihood estimation of sire-induced embryonic mortality in Icelandic sheep. J. Agr. Res. Icel. 9. 1: 72— 75. Bishop, M. W. H., 1964. Paternal contribution to embryonic death. J. Reprod. Fert. 7: 383—396. Bradford, G. E., 1972. Genetic control of litter size in sheep J. Reprod. Fert. suppl. 15: 23— 41. Bruére, A. N., 1974a. The segregation patterns and fertility of sheep heterozygons and homo- zygons for three different Robertsonian trans- location. J. Reprod. Fert. 41: 453—464. Bruére, A. N. 1974b. The discovery and biological consequences of some important chromosome in domestic animals. Ist World Congr. on Genet. Appl. to Livestock Production. Madrid 1974. Vol. I: 151—175. Bruére, A. N., 1975. Further evidence of normal fertility and the formation of balanced gametes in sheep with one or more different Robert- sonian translocations. J. Reprod, Fert. 45: 323 —331. Chapman, H. M. and Bruére, A. N., 1975. The frequency of aneuploidy in the secondary sper- matocytes of normal and Robertsonian translo- cation-carrying rams. J. Reprod. Fert. 45: 333 —342. Parker, C. F., 1969. Ram influence on lambing rate, lamb crop percentage and quantity of lamb weaned of Columbia and Targhee ewes. Proc. 2nd Wld. Cont. Anim. Prod., College Park, Md, 1968: 437—438. Purser, A. F., 1965. Repatability and heritability of fertility in hill sheep. Anim. Prod. 7: 75— 82. Purner, H. N., 1969. Genetic improvement of reproductive rate in sheep. Anim. Breed. Abstr. 37: 545—563.

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