RESULTS: Genomic DNA of 132 sheep was investigated for the Fec-B, FecXG, and Fec-GH mutations by Restriction Fragment Length Polymorphism, Single-Stranded Conformation Polymorphism and DNA sequencing. The results revealed that all breeds did not carry Fec-B mutation. On the other side, the mutations of FecXG, and Fec-GH were detected in Rahmani, and Rahmani X Barki cross which is associated with the high twinning rate/litter size of Rahmani (1.28) and Rahmani X Barki cross (1.22). While, the average litter size for other breeds had almost a constant values rate over six parities, ranging between 1.00 and 1.04.
结果:对132只绵羊的基因组DNA进行了Fec-B研究,FecXG,和Fec-GH通过限制性片段长度多态性突变,单链构象多态性和DNA测序。结果表明,所有品种均未携带Fec-B突变。在另一边,FecXG的突变,在Rahmani中检测到Fec-GH,和RahmaniXBarki杂交,这与Rahmani(1.28)和RahmaniXBarki杂交(1.22)的高孪生率/产仔数有关。同时,其他品种的平均产仔数在六个对位上几乎是恒定的,范围在1.00和1.04之间。