Long S E
Vet Rec. 1978 May 6;102(18):399-401. doi: 10.1136/vr.102.18.399.
One hundred Scottish Blackface ewes were mated to New Zealand Romney rams heterozygous for the Massey I (t1) centric fusion (Robertsonian) translocation. The lambing percentage of ewes lambed was 131 and the segregation of normal to balanced heterozygous lambs was 1:1. No chromosomally unbalanced lambs were born. Nine heterozygous females were mated to a heterozygous male and produced two homozygous, three heterozygous and seven normal lambs. The homozygous male had hypoplastic testes. The results indicate that there is no significant reduced fertility with 53XYt1 rams but that fertility of 52XYt1t1 rams should be further investigated.
一百只苏格兰黑脸母羊与携带梅西I（t1）着丝粒融合（罗伯逊式）易位杂合子的新西兰罗姆尼公羊交配。产羔母羊的产羔率为131%，正常羔羊与平衡杂合子羔羊的分离比例为1:1。未出生染色体不平衡的羔羊。九只杂合子母羊与一只杂合子公羊交配，产下了两只纯合子、三只杂合子和七只正常羔羊。纯合子公羊睾丸发育不全。结果表明，53XYt1公羊的生育力没有显著降低，但52XYt1t1公羊的生育力有待进一步研究。
