【摘要】 本试验估测了48小时母仔分离(Doe-LitterSeparation,DLS)对不同哺育方式(自由或控制)的母兔进行同期发情的效果。结果表明:控制哺育相对于自由哺育来说,可提高哺育母兔繁殖率(68.62%和46.00%,P<0.01),降低1～9日龄期间仔兔死亡率(8.00%和10.74%,P<0.05),同时也提高了母兔淘汰率(67.92%和56.41%,P<0.05)和乳房炎的发病率(15.09%和11.11%,P<0.05)。当母仔分离的方法使用在自由哺育方式中时,母兔的发情率和繁殖率均能得到极显著的改善(74.18%和53.72%,P<0.01;69.23%和46.00%,P<0.01)。然而,当母仔分离的方法使用在控制哺育方式中时,母兔的发情率和繁殖率的改善不及自由哺育中的应用效果(73.35%和58.47%,P<0.05;77.77%和69.62%,P>0.05)。48小时母仔分离对自由或控制两种哺育方式来说,均能显著降低哺乳期间仔兔的死亡率(18.69%和22.35%,P<0.05;15.47%和19.52%,P<0.05),尤其是9～42日龄期间仔兔的死亡率(8.15%和14.29%,P<0.01;8.57%和11.98%,P<0.01)。哺育方式和母仔分离对哺乳母兔窝产仔数、窝产活仔数、断奶个体重和断奶前日增重均无明显影响。更多还原

【Abstract】 The effectiveness of oestrus synchronization by 48-hour doe-litter separation(DLS) was evaluated in relation to the nursing system,free(FN)or controlled(CN).The results were as follows: 1.CN does showed a higher fertility in comparison with FN does(68 62% vs 46 00%,P<0 01).CN reduced young losses from birth to day 9(8.00% vs 10.74%,P<0 05),but it increased the doe replacement rate(67.92% vs 56.41%,P<0 05)and the rate of mastitis(15.09% vs 11.11%,P<0 05). 2.DLS applied on FN does improved receptivity(74.18% vs 53.72%,P<0 01)and fertility(69.23% vs 46.00%,P<0 01),which was more pronounced than that on CN(73.35% vs 58.47%,P<0 05;77.77% vs 68.62% P>0 05). 3.DLS applied on FN or CN signicantly reduced rabbit losses from birth to weaning (18.69% vs 22.35%,P<0 05;15.47% vs 19.52%,P<0 05),especially from day 9 to day 42 (8.15% vs 14.29%,P<0 01;8.57% vs 11.98% P<0 01). 4.Nursing system and DLS have no significant effect on litter size,live litter size,average body-weight at weaning and daily -gain from birth to weaning.更多还原