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首页> 外文期刊>Italian journal of animal science >Reproductive activity and welfare of rabbit does
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Reproductive activity and welfare of rabbit does

机译:兔子的生殖活动和福利

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Abstract This paper reviews the relationships between reproductive performance and welfare of the rabbit does. In the last 10 years the profitability of rabbit farms has increased mainly due to improvements in management and genetic selection but several problems mainly related to animal welfare have also occurred. The mortality and rates of female replacement per year are very high and the replaced females often show poor body condition and low performance. The effect of kindling order, litter size, genetic strain, weaning age and reproduction rhythm on the reproductive performance and welfare of females and some mechanisms implicated in these effects are discussed. Modern rabbit does produce a lot of milk which have a high energetic value which leads to a mobilization of body fat which results in an energy deficit. In the current reproductive rhythms, there is an extensive overlap between lactation and gestation. The resulting energetic and hormonal antagonism reduces the fertility rate and lifespan of the doe. Strategies to improve the fertility, lifespan and welfare of does are discussed. An approach which combines various strategies seems to be required to meet these objectives. Since the factors involved in this productive system are fixed (genetic strain, environment) the most powerful way to improve doe welfare is to choose a reproductive rhythm that is adapted to the physiology of the does.
机译:摘要本文综述了兔子的生殖性能与福利之间的关系。在过去的十年中,养兔场的盈利能力增加主要是由于管理和基因选择的改善,但也出现了一些主要与动物福利有关的问题。每年女性更换的死亡率和比率都很高,而被更换的女性通常身体状况较差,表现低下。讨论了种序,产仔数,遗传压力,断奶年龄和生殖节律对雌性繁殖性能和福利的影响,并探讨了与这些影响有关的一些机制。现代的兔子的确会产生大量具有高能量价值的牛奶,从而导致体内脂肪的动员,从而导致能量不足。在当前的生殖节律中,哺乳和妊娠之间存在广泛的重叠。由此产生的精力旺盛和激素拮抗作用降低了母鹿的受精率和寿命。讨论了提高家禽的生育率,寿命和福利的策略。为了实现这些目标,似乎需要一种结合各种策略的方法。由于该生产系统中涉及的因素是固定的(遗传应变,环境),因此提高母鹿福利的最有效方法是选择适合其生理的生殖节律。

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