The little rabbit was born without hair and began to grow on the fourth day. Hair grows fast. The hair development of the whole ear of the young rabbit was normal. At the age of one month, the length of the hair was up to 4.2 cm; the length of the fine hair was up to 2.8 cm, and the milk hair was all formed; at 60 days, the coarse hair was up to 7.5 cm, and the fine hair was up to 4.5 cm. At the age of 90 days, the growth rate of hair fiber was the same as that of adult rabbits, and the average growth rate of day and night hair was 0.6-0.7 mm. It takes about 75 to 90 days for the coat to grow back to its optimum length after shearing. Therefore, the hairy rabbit can be cut 4-5 times a year. The experiment shows that the wool yield per unit weight of wool rabbit is 2 - 3 times that of sheep, and the nutrition requirement is 1 / 3 of that of sheep.

　　兔毛的生長(zhǎng)受到許多因素的制約

　　The growth of rabbit hair is restricted by many factors

　　一是品種的影響，兔毛的產(chǎn)量和質(zhì)量隨品種或品種的不同而不同。

　　One is the influence of variety. The output and quality of rabbit hair vary with variety or variety.

　　第二，受個(gè)體影響，體重與毛發(fā)的產(chǎn)生是成比例的，個(gè)體越大，身體越大，表皮面積越大，毛發(fā)的產(chǎn)生越高。

　　Secondly, affected by individuals, the weight is proportional to the production of hair. The larger the individual, the larger the body, the larger the skin area, and the higher the production of hair.

　　第三，受性別影響，母兔的毛發(fā)量高于公兔。母兔在妊娠期和哺乳期毛發(fā)生長(zhǎng)緩慢。

　　Thirdly, influenced by gender, the hair quantity of female rabbit is higher than that of male rabbit. The hair growth of female rabbits was slow during pregnancy and lactation.

　　四是受年齡影響。幼兔毛發(fā)少，質(zhì)量差。頭發(fā)在2-3歲時(shí)更多。3年后品質(zhì)更好，毛產(chǎn)量逐漸下降，品質(zhì)也下降。毛發(fā)的生長(zhǎng)規(guī)律是，從幼兔到成年兔，兔毛由細(xì)到厚;老兔子的毛比小兔子的毛短。

　　Fourth, affected by age. Young rabbits have less hair and poor quality. The hair is most at the age of 2-3. Three years later, the quality was the best, the gross output decreased gradually, and the quality also decreased. The growth rule of hair is that from young rabbit to adult rabbit, the hair of rabbit is from thin to thick; the hair of old rabbit is shorter than that of small rabbit.

　　五是受生理?xiàng)l件和生理因素的影響。身體虛弱或疾病會(huì)抑制兔毛的生長(zhǎng);兔毛的生長(zhǎng)是由神經(jīng)系統(tǒng)控制的。性腺和垂體的內(nèi)分泌活動(dòng)直接影響兔毛的產(chǎn)量和質(zhì)量。例如，去勢(shì)的雄兔兔毛生長(zhǎng)快，密而細(xì)，產(chǎn)量高。

　　Fifth, it is affected by physiological conditions and factors. Weakness or disease can inhibit the growth of rabbit hair, which is controlled by the nervous system. The endocrine activities of gonad and hypophysis directly affect the output and quality of rabbit hair. For example, the hair of castrated male rabbit grows fast, dense and fine, and its output is high.

　　此外，化學(xué)因素也會(huì)影響毛發(fā)的生長(zhǎng)量，紫外線照射可加速兔毛的生長(zhǎng)，但毛發(fā)纖維變粗。

　　In addition, chemical factors can also affect the growth of hair. Ultraviolet irradiation can accelerate the growth of rabbit hair, but the hair fiber becomes thick.

　　以上就是蒙陰長(zhǎng)毛兔對(duì)影響兔毛產(chǎn)量的影響因素的詳細(xì)介紹，歡迎訪問(wèn)官網(wǎng)http://www.whxfy.cn

　　The above is a detailed introduction of the influence factors of Mengyin long hair rabbit on rabbit hair production. Welcome to the official website http://www.whxfy.cn