Effects of Dietary Manganese Level on Cashmere Performance and Related Serum Hormone Contents in Liaoning Cashmere Ewes

LI Wenting; CONG Yuyan; CAO Yang; LI Fengtian

doi:10.3969/j.issn.1006-267x.2013.09.015

2013 , Vol. 25 >Issue 9: 2028 - 2035

DOI: https://doi.org/10.3969/j.issn.1006-267x.2013.09.015

Ruminant Nutrition

Effects of Dietary Manganese Level on Cashmere Performance and Related Serum Hormone Contents in Liaoning Cashmere Ewes

LI Wenting ,
CONG Yuyan ,
CAO Yang ,
LI Fengtian

Expand

1. College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China;
2. Institute of Animal Husbandry of Liaoning Province, Liaoyang 111000, China

Received date: 2013-03-12

Online published: 2013-08-18

Fold

Abstract

This study was conducted to investigate the effects of dietary manganese level on cashmere performance and related serum hormone contents in Liaoning cashmere ewes. Sixty healthy 2.5-year-old Liaoning cashmere ewes with a similar body weight[(34.16±0.90)d]were chosen, and randomly divided into four groups. The goats were fed a basal diet supplemented with manganese at 0, 20, 40 and 60 mg/kg, respectively. The serum sample was collected to determine PRL and MT contents, and the cashmere sample was collected to analyze growth rate, fineness and strength of cashmere during non-pregnant period and the 1st and 4th month of pregnancy. The results showed as follows: 1) manganese supplementation had no significant effect on feed intake (P>0.05), but significantly increased average daily gain when supplemental level was 20 mg/kg (P<0.05). 2) During non-pregnant period, the serum PRL content was significantly increased, but the serum MT content was significantly decreased with 20 mg/kg manganese supplementation (P<0.05); the serum PRL and MT contents of ewes with 20 mg/kg manganese supplementation were not significantly different from those with 40 or 60 mg/kg manganese supplementation. During the 1st month of pregnancy, the serum PRL content was all significantly decreased (P<0.05), while the serum MT content was all significantly increased with manganese supplementation (P<0.05). 3) Manganese supplementation increased cashmere growth speed, especially the manganese supplementation at 20 mg/kg during the 1st and 4th month of pregnancy; cashmere fineness was also improved with manganese supplementation, but no significant change was found in cashmere relative strength (P>0.05) although its absolute strength was decreased. In conclusion, the manganese supplementation at 20 mg/kg (dietary manganese level is 60 mg/kg) is optimum to promote cashmere production performance of Liaoning cashmere ewes.

Key words： manganese; hormone; cashmere production performance; Liaoning cashmere ewes

Cite this article

LI Wenting , CONG Yuyan , CAO Yang , LI Fengtian . Effects of Dietary Manganese Level on Cashmere Performance and Related Serum Hormone Contents in Liaoning Cashmere Ewes[J]. Chinese Journal of Animal Nutrition, 2013 , 25(9) : 2028 -2035 . DOI: 10.3969/j.issn.1006-267x.2013.09.015

References

[1] 孙伟丽,李光玉,王夕国,等.锰营养及其在毛皮动物中应用的研究进展[J].中国畜牧兽医,2011,38(3);39-41.

[2] 孙昱,丛玉艳,邓宏炜,等.日粮锰水平对辽宁绒山羊与蛋白质代谢相关的血液指标的影响[J].黑龙江畜牧兽医,2012,69(3):69-70.

[3] 王林枫,杨改青,杨耀胜,等.光照和褪黑激素对非生绒期绒山羊激素分泌和绒毛生长的影响[J].中国畜牧兽医,2008(12):29-32.

[4] 徐文军,杨博辉,魏云霞,等.河西绒山羊血清中催乳素浓度季节性变化及其与山羊绒生长的相关性分析[J].中国食草动物,2008,28(3):21-22.

[5] 孟轲音,姚忠军,段铭,等.日粮锰水平对生长獭兔生产性能和生化指标的影响[J].吉林农业大学学报,26(3):313-316.

[6] 付云超,李善文,薛琳琳,等.微量元素对奶牛繁殖性能的影响[J].河南畜牧兽医,2007,28(4):13-14.

[7] 张志群,韩正康.用活体取样研究山羊分娩前后乳腺的发育及分泌[J].南京农业大学学报,1988,11(2):104-108.

[8] CHOY V J,NIXON A J,PEARON A J.Distribution of prolactin receptor immunoreactivity in ovine skin and changes during the wool follicle growth cycle[J].Journal of Endocrinology,1997,155(2):265-275.

[9] CHOY V J,NIXON A J,PEARSON A J.Localisation of receptors for prolactin in ovine skin[J].Journal of Endocrinology,1995,144(1):143-151.

[10] KLOREN W R L,NORTON B W,WATERS M J.Fleece growth in Australian cashmere goats.1.The effects of nutrition and age on fleece growth,prolactin and thyroxine concentration[J].Australian Journal of Agricultural Research,1993,44(5):1003-1021.

[11] DICKS P,RUSSAL A J F,LINCOLN G A.The role of prolactin in the reactivation of hair follicles in relation to moulting in cashmere goats[J].Journal of Endocrinology,1994,143(3):441-448.

[12] LITHERLAND A J.The role of plasma prolactin concentration in seasonal fiber growth cycles in down-producing goats and Wiltshire sheep[J].Physiological Reviews,1996,80(4):1523-1631.

[13] EMESIH G C,NEWTON G R,TET T H,et al.Effects of Photoperiod and continuous administration of melatonin on plasma concentrations of prolactin in cashmere goats[J].Small Ruminant Research,1993,11(3):247-256.

[14] WULILI T,LITHERLAND A,GOETSCH A L,et al.Evaluation of melatonin and bromocryptine administration in Spanish goats:Ⅱ.Effect on seasonal cashmere growth,yield and fiber characteristics of does[J].Small Ruminant Research,2003,49(1):41-49.

[15] 岳春旺,张微,孔祥浩,等.褪黑激素对内蒙古白绒山羊产绒性能的影响[J].中国畜牧杂志,2007,43(7):32-34.

[16] 柳建昌,尹协镇,方天祺.褪黑素对中国绒山羊在非生绒期促绒生长与绒产量的影响[J].动物学杂志,1998,33(3):8-12.

[17] 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.

[18] NIXON A J,FORD C A,WILDERMOTH J E,et al.Regulation of prolactin receptor expression in ovine skin in relation to circulating prolactin and wool follicle growth status[J].Journal of Endocrinology,2002,172(3):605-614.

[19] NIXON A J,CHOY V J,PARRY A L,et a1.Fiber growth initiation in hair follicles of goats treated with melatonin[J].Journal of Experimental Zoology,1993,267(1):47-56.

[20] PEARSON A J,PARRY A L,ASHBY M G,et a1.Inhibitory effect of increased photoperiod on wool follicle growth[J].Journal of Endocrinology,1996,148(1):157-166.

[21] CONG Y Y,DENG H W,FENG Y L,et al.Melatonin implantation from winter solstice could extend the cashmere growth phase effectively[J].Small Ruminant Research,2011,99(1):48-53.

[22] O''NEILL K,LITHERLAND A J,HAMILTON G.Melatonin for cashmere production in breeding does[J].Journal of Pineal Research,1992,52:161-164.

[23] 朱玉成.影响山羊绒细度的因素及控制羊绒细度的研究现状[J].中国草食动物,2004,24(2):35-37.

[24] 贾志海,蔡青和.山羊绒生长机制及其营养研究进展[J].动物营养学报,1999,11(增刊):97-102.

[25] 赵凤立,郭维春,刘胜华,等.辽宁绒山羊绒毛纤维理化性状的研究[J].内蒙古畜牧科,1993(4):36-39.

[26] 张永升,张微,朱晓萍,等.日粮铜钼水平对绒山羊产绒性能和血液相关激素的影响[J].中国农业大学学报,2009,14(6):68-72.

[27] BROWN D J,CROOK B J,PURVIS I W.Differences in fibre diameter profile characteristics in wool staples from Merino sheep and their relationship with staple strength between years,environments,and bloodlines[J].Australian Journal of Agricultural Research,2002,53(4):481-491.

Options

Outlines

模态框（Modal）标题

Abstract

Cite this article

References