养殖方式及品种对绒山羊瘤胃发酵特性的影响  

Effects of Different Feeding Patterns and Varieties on Rumen Fermentation Characteristics of Cashmere Goat

作　　者：杨硕[1] 王志新[1] 娜仁花[1] 温琦 李金泉[1] YANG Shuo;WANG Zhixin;NA Renhua;WEN Qi;LI Jinquan(College of Animal Science,Inner Mongolia Agricultural University,Hohhot Inner Mongolia 010018,China)

机构地区：[1]内蒙古农业大学动物科学院,内蒙古呼和浩特010018

出　　处：《家畜生态学报》2018年第8期36-40,共5页Journal of Domestic Animal Ecology

基　　金：现代农业产业技术体系建设专项资金(CARS-40-05);公益性行业(农业)科研专项经费资助(201303059;201003019)

摘　　要：为研究不同养殖方式及品种对绒山羊瘤胃发酵特性的影响,本试验采用自然放牧和放牧补饲2种养殖方式,以阿尔巴斯型绒山羊和大青山型绒山羊为试验动物,测定了瘤胃液pH、氨态氮(NH3-N)浓度和挥发性脂肪酸(VFA)浓度的变化。结果显示,不同养殖方式下,补饲组(II组)瘤胃液pH低于自然放牧组(I组),差异不显著(P>0.05);同在放牧条件下,大青山型(I组)瘤胃液pH高于阿尔巴斯型(III组)。补饲组(II组)瘤胃液中的NH3-N和VFA浓度均高于放牧组(I组),且差异极显著(P<0.01),但2组间的乙酸/丙酸差异不显著(P>0.05);I组和III组间的NH3-N和VFA浓度差异不显著(P>0.05)。由于精料的添加,补饲组绒山羊瘤胃发酵特性受到影响,瘤胃微生物促进了对日粮中氮源的利用,而且不同品种类型间的瘤胃发酵特性也存在一定的差异性。To research the effects of different feeding patterns and varieties on rumen fermentation characteristics of cashmere goat,two feeding methods were used,natural grazing and grazing feeding,to raise Alpas-type cashmere goat and Daqingshan-type cashmere goat to determine the changes of pH,ammonia nitrogen(NH 3-N)and volatile fatty acid(VFA)in rumen.The results showed that the pH of the rumen fluid in the feeding group(group II)was significantly lower than that in the natural grazing group(group I)(P=0.05);under the same grazing conditions,the pH value of the rumen fluid in the Daqingshan type(group I)was significantly higher than that in the Alba group(group III).The concentration of NH 3-N and VFA in the rumen fluid of the feeding group(group II)was higher than that of the grazing group(group I),and the difference was significant(P<0.01),but the difference of acetic acid/propionic acid between the two groups was not significant(P>0.05).and there was no significant difference in NH3-N and VFA concentrations between group I and III(P>0.05).As a result of the addition of concentrate,the rumen fermentation characteristics of the cashmere goats were affected.Rumen microbes promoted the use of nitrogen sources in diets,and there were also some differences in rumen fermentation characteristics among different varieties.

关 键 词：养殖方式 品种 瘤胃发酵 绒山羊 

分 类 号：S811.5[农业科学—畜牧学]