控制光照对内蒙古白绒山羊褪黑激素含量的影响
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摘要
为研究非长绒期控制光照对内蒙古白绒山羊褪黑激素(MLT)含量的影响,随机选取12只年龄、产绒量和体重基本一致的内蒙古白绒山羊母羊,分为控制光照组(试验组)和对照组,每组各6只,采集血液样品进行褪黑激素含量测定,利用SAS 9.0软件进行显著性检验和相关性分析。结果表明,控制光照(试验组)使白绒山羊血液中的MLT含量在20:00、21:40、6:40时高于对照组,20:00、6:40时两组白绒山羊MLT含量差异显著(P<0.05),试验组白绒山羊血液中MLT含量的高峰期维持时间显著长于对照组。10月,试验组与对照组MLT含量变化基本一致,差异均不显著(P>0.05);对照组中10月白绒山羊血液中的MLT含量明显高于6月,但控制光照的白绒山羊血液中的MLT含量最高,说明控制光照可改变皮肤毛囊发育及绒毛生长周期,最终使内蒙古白绒山羊在非长绒期绒毛提前生长。
In order to investigate the effect of photoperiod control on blood concentration of melatonin(MLT) in Inner Mongolia white cashmere goat during cashmere non-growing period, a total of 12 female Inner Mongolia white cashmere goats with similar age, cashmere production and body weight were selected and allocated to experimental group(short photoperiod, n =6) and control group(normal photoperiod, n=6). The blood samples were collected from the ewes to determine the MLT concentration,and the differences in blood MLT concentration between experimental group and control group were statistically assessed. The results showed that the higher blood MLT concentration were observed in experimental group at 20:00(P<0.05), 21:40, and 6:40(P<0.05) compared to control group, and the duration of the peak concentration of blood MLT was longer in experimental group compared to control group. In October, the variation of blood MLT concentration in experimental group was similar to that in control group, and no significant differences in blood MLT concentration between experimental group and control group were observed(P>0.05); for control group, the blood MLT concentration was obviously higher in October compared to June, but the highest value of blood MLT concentration was observed in the ewes receiving short photoperiod treatment. Collectively, these data reveal that the photoperiod regulates the hair follicle development and cashmere growth cycle, and the short photoperiod treatment stimulates the early cashmere growth in the non-growing period in Inner Mongolia white cashmere goat.
In order to investigate the effect of photoperiod control on blood concentration of melatonin(MLT) in Inner Mongolia white cashmere goat during cashmere non-growing period, a total of 12 female Inner Mongolia white cashmere goats with similar age, cashmere production and body weight were selected and allocated to experimental group(short photoperiod, n =6) and control group(normal photoperiod, n=6). The blood samples were collected from the ewes to determine the MLT concentration,and the differences in blood MLT concentration between experimental group and control group were statistically assessed. The results showed that the higher blood MLT concentration were observed in experimental group at 20:00(P<0.05), 21:40, and 6:40(P<0.05) compared to control group, and the duration of the peak concentration of blood MLT was longer in experimental group compared to control group. In October, the variation of blood MLT concentration in experimental group was similar to that in control group, and no significant differences in blood MLT concentration between experimental group and control group were observed(P>0.05); for control group, the blood MLT concentration was obviously higher in October compared to June, but the highest value of blood MLT concentration was observed in the ewes receiving short photoperiod treatment. Collectively, these data reveal that the photoperiod regulates the hair follicle development and cashmere growth cycle, and the short photoperiod treatment stimulates the early cashmere growth in the non-growing period in Inner Mongolia white cashmere goat.
引文
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[13]索朗达,益西多吉,吴玉江,等.非产绒期控制光照和埋植褪黑激素对藏西北绒山羊增绒效果的影响[J].中国草食动物科学,2015,35(2):15-17.
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[15]初文生,刘影,段春辉,等.内蒙古绒山羊非生绒期内褪黑激素埋植时间对山羊绒生产性能的影响[J].中国农业大学学报,2015,20(3):121-125.
[16]王林枫,卢德勋,孙海洲,等.光照和褪黑激素对内蒙古绒山羊氮分配和产绒性能的影响[J].中国农业科学,2006,39(5):1004-1010.
[2]ROH C,TAO Q,LYLE S.Dermal papilla-induced hair differentiation of adult epithelial stem cells from human skin[J].Physiol Genomics,2004,19(2):207-217.
[3]赵艳红,王琳,张铁佳,等.褪黑激素促进绒山羊绒毛生长及其作用机制的研究进展[J].中国畜牧兽医,2014,41(4):215-219.
[4]BETTERIDGE K,WELCH R A S,POMROY W E,et al.Out of season cashmere growth in feral goats[C]//Proceedings of the Second International Cashmere Conference.New Zealand:Lincoln College,1987:137-142.
[5]MOELLMANN G,LERNER A B,HENDEE J R Jr.The mechanism of frog skin lightening by acetylcholine[J].Gen Comp Endocrinol,1974,23(1):45-51.
[6]FISCHER T W,SLOMINSKI A,TOBIN D J,et al.Melatonin and the hair follicle[J].J Pineal Res,2008,44(1):1-15.
[7]贾志海.不同光周期和褪黑激素对绒山羊生产性能影响[J].中国畜牧杂志,1995,31(4):8-10.
[8]李金泉,尹俊,周欢敏.绒山羊绒毛生长调控机理研究进展[J].中国草食动物,2001,3(3):41-44.
[9]PLIKUS M V,MAYER J A,De la CRUZ D,et al.Cyclic dermal BMP signalling regulates stem cell activation during hair regeneration[J].Nature,2008,451(7176):340-344.
[10]张春兰.内蒙古阿尔巴斯白绒山羊毛囊生长周期性变化与KAP6 c DNA的特征分析[D].呼和浩特:内蒙古农业大学,2003.
[11]李长青.绒山羊毛囊周期性变化与兴盛期毛囊KAP13-1基因的表达[D].呼和浩特:内蒙古农业大学,2005.
[12]吴静.褪黑激素对内蒙古绒山羊产绒性能及皮肤毛囊中RORa表达的影响[D].呼和浩特:内蒙古农业大学,2016.
[13]索朗达,益西多吉,吴玉江,等.非产绒期控制光照和埋植褪黑激素对藏西北绒山羊增绒效果的影响[J].中国草食动物科学,2015,35(2):15-17.
[14]初文生,李丰田,赵凤立,等.埋植和饲喂褪黑激素对常年长绒型辽宁绒山羊生产性能的影响[J].中国畜牧杂志,2015,51(1):70-72.
[15]初文生,刘影,段春辉,等.内蒙古绒山羊非生绒期内褪黑激素埋植时间对山羊绒生产性能的影响[J].中国农业大学学报,2015,20(3):121-125.
[16]王林枫,卢德勋,孙海洲,等.光照和褪黑激素对内蒙古绒山羊氮分配和产绒性能的影响[J].中国农业科学,2006,39(5):1004-1010.