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Melatonin implants in fur animal breeding industry in the application of
2009-05-13  Source :Unknown  Hit2862
Melatonin by the pineal gland located in the brain of animals secrete a hormone indole, also known as the pineal gland hormone. At present, melatonin animals in the international fur industry has been widely used. International brands (Kang Chia) dedicated animal fur melatonin implants in recent years by farmers farming enterprises welcomed by the Chinese people, the quality of the underwriting insurance companies.

Melatonin why there is such a magical effect? Animals the synthesis and release of pineal melatonin, with a clear circadian rhythm, and is mainly affected by the regulation of light outside. During the day, light by the retina into nerve signals into the pineal gland, melatonin inhibited the synthesis and release; night, optical signals weakened with activated pineal gland melatonin synthesis of the two enzymes, stimulate the synthesis of melatonin and release. Therefore, the mammalian blood concentrations of melatonin increase at night, lower during the day, the formation of circadian rhythm changes. This change affects the corresponding body organ or tissue, so that by the photoperiodic regulation of seasonal physiological cycles synchronized with the ambient light changes, so has the regulation of melatonin animal's ability to seasonal physical activities, but also to remove the body of oxygen free radicals and strengthen the immunity.

Application of exogenous melatonin fur animal breeding three benefits:

First, induction of early mature fur

Long-day period during the summer months the use of exogenous melatonin, by raising animals melatonin levels, can simulate the role of short day induction of animal fur in winter hair growth and maturity ahead of time, is economical and simple, has been in a variety of fur animals to obtain good results. Such as the mink in the 6 at the end of early July, implanted subcutaneously or 10 mg 5 mg of melatonin, which can be dressed in full maturity in October, under normal circumstances than six weeks in advance. Mink in the different color type 6 at the end of subcutaneous melatonin implants after the first week of August the first to discover the summer of light-colored mink hair began to fall, followed by darker color mink, the most dark-colored mid-September in the shed. Molt-type sequence of colors and the natural light of the same order, but its plush than that of melatonin have not been dealt with mature mink weeks in advance. General Health Mink was in mid-July in the implant, out of 5 at the end of the adult mink implanted early in June, better. Fur animal after implantation of melatonin increased appetite, increased feed intake, growth rate of pre-incubation markedly accelerated weight can reach maturity in advance.

Second is to improve the production of cashmere and rabbit

Cashmere goat cashmere growth of the new year began in September to stop the growth of the following year before and after the spring equinox and begin falling until after the beginning of September until the next hair growth cycle. In the spring to deal with melatonin cashmere goats can make the summer to stop the growth of hair growth to resume in the formation of the two year cycle of hair growth, hair production can increase 11% - 37%, and villous length and quality of no significant adverse impact. Spring 12% of hair follicles can not be long-haired, long-haired summer hair follicle can not reach 28% - 30%, therefore, throughout the year, the gross output of the summer minimum. To Angola in the summer of rabbit oral or subcutaneous melatonin implants, which can effectively prevent the summer decline in gross output. Yield the best processing time is around the summer solstice in July. According to foreign studies have shown that melatonin after 80 days interval, the output of the two shearing rabbits than untreated yield 17.7%, which increased the output of first-class hair 14.1%, 5.6% increase in hair length . In addition, melatonin deal a week later, the wool-rabbit feed intake and body weight increased significantly.

Third, extend the period of fur animal breeding to improve fertility and reduce mortality of animal fur

Fur animals are seasonal breeding animals, the gonad development, estrus and pregnancy breeding cycle regulation are subject to light. Mink Fox and raccoon fur animals, such as gonadal development must be carried out under short-day environment. Therefore, in the summer to the fur animals of exogenous melatonin treatment, can promote early gonadal development of animal fur and make it ahead of the breeding season. Such as the Silver Fox in early February to 8 or 12 mg implants of melatonin, the results of the public ahead of Fox testicular development, semen animals than the control group one month in advance, but their testes than degradation time of melatonin did not deal with the public Fox in advance. Silver Fox the normal breeding season in the beginning of acceptance of higher doses of melatonin continued to deal with, and in June, the testicular function is also essentially the same as with the breeding period, which provided for the production of silver fox skin a great convenience. Accepted in July to address melatonin Silver Fox of the home in mid-December while the starting conditions on the performance of the early symptoms, but only a small portion of the mother fox breeding season in the normal estrus and breeding normal pregnancy, the mother fox seed should not use melatonin hormone processing.

Studies have shown that melatonin antioxidant vitamin E than the strong 1 times, 5 times more than glutathione strong, able to block any part of the animals free radical damage. Thus, melatonin in the prevention of HIV Aleutian water body caused by injury (caused by oxygen free radicals through) such areas as especially meaningful. Melatonin also enhanced the response of the immune response showed the role of biological regulation, such as inhibiting tumor growth and alleviate the stress-induced decline in immune function. 6 - July melatonin implants can mink incubation period of 2 percent decline in mortality.
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