小兔子出生时没有毛，第四天开始长毛。头发长得很快。经测定，幼兔全耳毛发发育正常，1月龄，毛发长度可达4.2 cm;细毛长度可达2.8厘米，乳毛已全部形成;在60天时，粗毛达到7.5厘米，细毛达到4.5厘米。90日龄时，毛发纤维生长速度与成年家兔相同，日、夜毛发平均生长速度为0.6-0.7 mm。剪掉毛后，大约需要75到90天的时间才能使被毛长回最佳长度。因此，长毛兔一年可以剪4-5次。实验表明，毛兔每单位体重产毛量是绵羊的2 - 3倍，所需营养是绵羊的1/3。
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.
The growth of rabbit hair is restricted by many factors
One is the influence of variety. The output and quality of rabbit hair vary with variety or variety.
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.
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.
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.
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.
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.
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.myxinhua.com