影响长毛兔种兔繁殖力的5大主要因素

　　The 5 main factors affecting the reproductive capacity of long haired rabbit breeds

　　温度

　　temperature

　　环境温度对家兔的繁殖性能影响较为明显，超过30℃即引起食欲下降，性欲降低。持续高温可使睾丸产生精子减少，甚不产生精子。高温可影响性欲，但高温过后能很快恢复，而精液品质的恢复则需要2个月左右的时间，因为精子的发生、发育到成熟排出，要一个半月左右的时间。这可能就是秋季天气已凉爽但配种受胎率仍然不高的原因。这种影响，对长毛兔尤其是德系安哥拉兔更为明显，对皮肉兔的影响相对较小。

　　The environmental temperature has a significant impact on the reproductive performance of rabbits, with a decrease in appetite and sexual desire when it exceeds 30 ℃. Continuous high temperatures can reduce or even prevent the production of sperm in the testicles. High temperature can affect sexual desire, but it can quickly recover after high temperature, while the recovery of semen quality takes about 2 months because the occurrence, development, maturity, and ejaculation of sperm take about one and a half months. This may be the reason why the autumn weather is cool but the breeding and conception rate is still not high. This effect is more pronounced on long haired rabbits, especially German Angora rabbits, and relatively less on skin meat rabbits.

　　低温对家兔繁殖力也有一定影响，环境温度低于5℃，性欲减退。当然，寒冷季节繁殖力低的原因，除低温的影响外，还有营养因素、冬季青饲料缺乏引起的维生素不足等。

　　Low temperature also has a certain impact on the reproductive ability of rabbits, with a decrease in sexual desire when the ambient temperature is below 5 ℃. Of course, the reasons for low reproductive capacity in cold seasons include not only the impact of low temperatures, but also nutritional factors and vitamin deficiencies caused by a lack of winter green feed.

　　营养

　　nutrition

　　据国外研究指出，高营养水平往往影响卵泡发育和排卵率降低。在交配后第9天观察受精卵着床数，高营养水平的胚胎死亡率为44％，而低营养水平仅18％，前者活胎儿数平均仅3．8只，后者为6只。

　　According to foreign research, high nutritional levels often affect follicular development and reduce ovulation rates. On the 9th day after mating, the number of fertilized eggs implanted was observed. The mortality rate of embryos with high nutrient levels was 44%, while those with low nutrient levels were only 18%. The average number of live fetuses in the former was only 3.8, while in the latter it was 6.

　　营养水平过低或营养不，对家兔繁殖力也有不利影响。因为繁殖性能很大程度上受脑垂体机能的影响，营养贫乏直接影响到脑垂体的机能。

　　Low or incomplete nutritional levels can also have adverse effects on the reproductive capacity of rabbits. Because reproductive performance is largely influenced by the function of the pituitary gland, malnutrition directly affects the function of the pituitary gland.

　　隐睾或单睾

　　Cryptorchidism or Monorchidism

　　公兔隐睾或单睾是一种生理缺陷，配种不能使母兔受胎或受胎率不高。因为隐睾或单睾公兔不能产生精子或产生精子能力较差。

　　Male rabbit cryptorchidism or monorchidism is a physiological defect that prevents female rabbits from conceiving or results in a low conception rate during mating. Because male rabbits with cryptorchidism or monorchidism cannot produce sperm or have poor sperm production ability.

　　使用不当

　　improper use

　　公兔休闲期后可能出现暂时性不育，但在次配种后即消失。公兔长期不配种，配种要进行复配，如果人工授精，采的精液弃去不用。母兔长期空怀或初配过迟，卵巢机能减退，往往使母兔妊娠困难。

　　After the leisure period, male rabbits may experience temporary infertility, but it disappears after the first mating. If male rabbits do not breed for a long time, they need to be mixed for the first breeding. If artificial insemination is performed, the semen collected for the first time should be discarded and not used. Long term empty pregnancy or delayed initial mating of female rabbits, coupled with decreased ovarian function, often make it difficult for them to conceive.

　　种兔年龄

　　Rabbit breeding age

　　种兔的年龄明显地影响其繁殖性能，1岁～2岁的种兔随着年龄的增长，繁殖性能提高。2岁以后繁殖性能逐渐下降。一般种兔使用3年左右，3岁以上除个别者外，不宜再作种用。

　　The age of breeding rabbits significantly affects their reproductive performance, and the reproductive performance of breeding rabbits aged 1-2 years increases with age. After the age of 2, reproductive performance gradually declines. Generally, breeding rabbits should be used for about 3 years, and those over 3 years old should not be used for breeding except for a few excellent ones.

　　本文由 长毛兔  友情奉献.更多有关的知识请点击  http://www.myxinhua.com/  真诚的态度.为您提供为的服务.更多有关的知识我们将会陆续向大家奉献.敬请期待.

　　This article is a friendly contribution from Long haired Rabbit For more related knowledge, please click http://www.myxinhua.com/ Sincere attitude To provide you with comprehensive services We will gradually contribute more relevant knowledge to everyone Stay tuned