Effects of Heat Stress on Rumen Fermentation Indexes of Dairy Goats and Regulation Function of Organic Chromium

XU Xiao; LIU Jundi; LI Yan; WANG Chao; YU Jie; QI Zhili

doi:10.3969/j.issn.1006-267x.2013.01.013

Chinese Journal of Animal Nutrition >

2013 , Vol. 25 >Issue 1: 100 - 106

DOI: https://doi.org/10.3969/j.issn.1006-267x.2013.01.013

Ruminant Nutrition

Effects of Heat Stress on Rumen Fermentation Indexes of Dairy Goats and Regulation Function of Organic Chromium

XU Xiao ,
LIU Jundi ,
LI Yan ,
WANG Chao ,
YU Jie ,
QI Zhili

Expand

College of Animal Sciences and Technology and Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China

Received date: 2012-07-31

Online published: 2013-01-04

Fold

Abstract

This experiment was conducted to investigate the effects of heat stress on rumen pH, NH₃-N and volatile fatty acids (VFA) of dairy goats and regulatory function of carboxylic acid pyridine chromium. Four Boer dairy goats with a similar weight of [(20.75?1.88) kg] were selected. This experiment was divided into 3 periods and each period contained control group, heat stress group and chromium group with self-control study. The goats of the control group were fed in air-conditioned room with temperature-humidity index (THI) below 70 (not under heat stress), and those of the other two groups were fed in normal animal room with a similar THI (P>0.05) above 79 (under similar heat stress). Carboxylic acid pyridine chromium was added to a basal diet as chromium group diet (the chromium content was 0.2 mg/kg diet). Each period lasted for 14 days. Gastric juice on the 13th day of experiment was collected to determinate pH and the concentrations of NH₃-N and VFA. The results showed as follows: heat stress significantly reduced pH (P<0.05), significantly increased the concentrations of NH₃-N, total VFA, acetate and butyrate (P<0.05), and significantly decreased acetate/propionate (A/P) (P<0.05). Supplementation of carboxylic acid pyridine chromium significantly increased the concentrations of acetate and butyrate and A/P of goats in heat stress (P<0.05), significantly reduced propionate concentration (P<0.05), while there were no significant effects on pH and NH₃-N concentration (P>0.05). It is conclude that heat stress can significantly decrease rumen pH and increase rumen VFA concentration, which change fermentation modes. Carboxylic acid pyridine chromium can adjust rumen VFA concentration and the effects of heat stress to some extent.

Key words： heat stress; dairy goat; rumen fermentation; organic chromium

Cite this article

XU Xiao , LIU Jundi , LI Yan , WANG Chao , YU Jie , QI Zhili . Effects of Heat Stress on Rumen Fermentation Indexes of Dairy Goats and Regulation Function of Organic Chromium[J]. Chinese Journal of Animal Nutrition, 2013 , 25(1) : 100 -106 . DOI: 10.3969/j.issn.1006-267x.2013.01.013

References

[1] 高民,杜瑞平,温雅俪.热应激对奶牛生产的影响及应对策略 //农业部科技教育司,中国农学会,农业部环境保护科研监测所.发展低碳农业应对气候变化——低碳农业研讨会论文集.北京:中国农业出版社,2010:127-132.
[2] 廖晓霞,叶均安.泌乳奶牛热应激研究进展[J].中国饲料,2005(19):21-23.
[3] 王建平,王加启,卜登攀,等.高温条件下高产和中产奶牛产奶性能及瘤胃发酵的研究[J].动物营养学报,2010,22(1):51-56.
[4] MERTZ W,TEPHER E V,ROGINSID E E,et al.Present knowledge of the role of chromium[J].Federation Proceedings,1974,33:2275-2280.
[5] BAHIJRI S M A,MUFTI A M B.Beneficial effects of chromium in people with type 2 diabetes,and urinary chromium response to glucose load as a possible indicator of status[J].Biological Trace Element Research,2002,85(2):97-109.

[6] 张敏红,张卫红.补铬对高温环境下猪的铬代谢、生理生化反应和生产性能的影响[J].畜牧兽医学报,2000,31(1):1-8.
[7] 李绍钰,魏凤仙.有机铬改善高温季节下奶牛生产性能的研究[J].中国奶牛,2000(5):18-19.
[8] EVANS G W.The effect of chromium picolinate on insulin controlled parameters in humans[J].International Journal of Biosocial and Medicine Research,1989,11:163-175.
[9] NRC.Nutrient requirements of goats:angora,dairy and meat goats in temperate and tropical countries[S].Washington,D.C.:National Academy Press,1981.
[10] 金公亮.奶山羊饲养标准[J].畜牧兽医杂志,1989(2):7-12.
[11] 冯宗慈,高民.通过比色测定瘤胃液氨氮含量方法的改进[J].畜牧与饲料科学,2010,31(6/7):37.
[12] 谭支良,卢德勋,胡明,等.绵羊日粮中不同碳水化合物比例对瘤胃内环境参数的影响[J].动物营养学报,2000,12(1):42-47.
[13] MISHRA M,MARTZ F A,STANLEY R W,et al.Effect of diet and ambient temperature-humidity on ruminal pH,oxidation reduction potential,ammonia and lactic acid in lactating cow[J].Journal of Animal Science,1970,30(6):1023-1028.
[14] 温雅俪,高民,何钦,等.热应激对不同泌乳阶段奶牛瘤胃内环境发酵指标的影响[J].中国畜牧杂志,2011,47(19):69-73.
[15] 丰伟悦,钱琴芳,丁文军,等.用同位素示踪技术研究大鼠体内铬的赋存状态[J].核化学与放射化学,1999,21(3):147-152.
[16] 鲁琳,许曾曾,赵凤茹,等.不同蛋白质饲料原料对瘤胃发酵参数和营养物质降解率的影响[J].中国奶牛,2007(5):10-13.
[17] OWENS F N,BERGEN W G.Nitrogen metabolism of ruminant animals:historical perspective,current understanding and future implications[J].Journal of Animal Science,1983,57:498-518.
[18] COLLIER R J,BEEDE D K,THATCHER W W,et al.Influences of environments and its modification on dairy animal health and production[J].Journal of Dairy Science,1982,65:2213-2227.
[19] 黎智峰.有机铬和苦丁茶提取物对热应激山羊的影响 .硕士学位论文.郑州:河南农业大学,2008:23-30.

Options

Outlines

模态框（Modal）标题

Abstract

Cite this article

References