热应激对奶山羊瘤胃发酵指标的影响及有机铬对其的调控作用

许啸; 刘君地; 李燕; 王超; 余婕; 齐智利

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

动物营养学报 >

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

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

反刍动物营养 Ruminant Nutrition

热应激对奶山羊瘤胃发酵指标的影响及有机铬对其的调控作用

许啸 ,
刘君地 ,
李燕 ,
王超 ,
余婕 ,
齐智利

展开

华中农业大学动物科技学院动物医学院,武汉 430070

收稿日期: 2012-07-31

网络出版日期: 2013-01-04

基金资助

动物营养学国家重点实验室开放项目(2004DA125184F1213);华中农业大学自主科技创新基金项目(2011QC049;2011PY019)

收起

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

摘要

本试验旨在研究热应激对奶山羊瘤胃内pH、氨态氮(NH₃-N)和挥发性脂肪酸(VFA)浓度的影响,以及添加吡啶羧酸铬对其的调控作用。选用体重相近[(20.75±1.88) kg]的波尔山羊4只,采用自身对照,分3期试验,分别为对照组、热应激组和加铬组:对照组山羊在空调房中饲喂,温湿指数(THI)在70以下,处于非热应激状态;热应激组和加铬组山羊在室温动物房中饲喂,2组THI无显著差异(P>0.05),达79以上,处在相似的热应激状态。加铬组饲粮为基础饲粮中添加吡啶羧酸铬(铬含量为0.2 mg/kg饲粮)。每期试验14 d,在试验的第13天采集瘤胃液,测定pH、NH₃-N和VFA浓度。结果表明:热应激可以显著降低奶山羊瘤胃内pH(P<0.05),显著提高瘤胃内NH₃-N、总挥发性脂肪酸(TVFA)、乙酸、丙酸浓度(P<0.05),显著降低乙酸/丙酸(P<0.05)。饲粮中添加吡啶羧酸铬后可以显著提高热应激奶山羊瘤胃乙酸、丁酸浓度和乙酸/丙酸(P<0.05),显著降低瘤胃丙酸浓度(P<0.05),对瘤胃pH、NH₃-N浓度影响不显著(P>0.05)。由此可见,热应激使瘤胃pH显著降低,显著增加了VFA浓度,改变了瘤胃发酵模式;饲粮添加吡啶羧酸铬可调节瘤胃VFA浓度,对热应激造成的影响有一定的调节作用。

关键词： 热应激; 奶山羊; 瘤胃发酵; 有机铬

本文引用格式

许啸 , 刘君地 , 李燕 , 王超 , 余婕 , 齐智利 . 热应激对奶山羊瘤胃发酵指标的影响及有机铬对其的调控作用[J]. 动物营养学报, 2013 , 25(1) : 100 -106 . DOI: 10.3969/j.issn.1006-267x.2013.01.013

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

参考文献

[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

文章导航

摘要

本文引用格式

Abstract

参考文献

关于本刊

在线期刊

作者中心

相关单位

联系我们

模态框（Modal）标题

摘要

本文引用格式

Abstract

参考文献

关于本刊

在线期刊

作者中心

相关单位

联系我们