褪黑素(MLT)对商品獭兔被毛品质和增重的影响

Effects of Melatonin on fur Quality and Growth Performance of Rex Rabbit

选用45￣50日龄的生长獭兔80只,随机分成4组,每组20只。分别皮下埋置MLT2.33mg(Ⅰ组)、3.5mg(Ⅱ组)、7mg(Ⅲ组)和0mg(Ⅳ组,即对照组)。试验期80d。结果表明,皮下埋植MLT可极显著提高断乳后獭兔的生长速度,加速毛囊的分化和增加被毛密度,促使皮肤增厚和成熟(p<0.01)。试验初步显示,每只皮下埋置3.5￣7mgMLT,使试兔130日龄的体重、被毛密度和皮肤厚度达到150日龄生长獭兔的相同指标,即可使商品獭兔育肥提前20d出栏。

80 rex rabbit （45-50 days old） were randomly divided into 4 groups of 20 rabbit each. The levels of hypodermic embedmenting MLT were 2.33, 3.5, 7 and 0 milligrams per animal. The trial last for 80 days. The result showed that the weight gain, hair-follicle differentiation and fur density of the embedmented MLT rabbits were increased and the skin maturing was promoted significantly （p〈0.01）; The live weight, fur density and skin thickness of 130 days old rabbits embedmented 3.5~ reached to that of 150 days old. In other words,the commercial rex rabbit embedmented to slaughter weight 20 days ahead of time.