不同胎次西农萨能羊鲜乳中链和短链脂肪酸组成的初步研究  

Preliminary study on effect of parity on short- and medium-chain fatty acids composition in milk of Xinong Saanen goat

作　　者：罗军[1] 单翠燕[1] 刘拉平[1] 王海滨[1] 孙小琴[1] 王学清[1] 武会娟[1] 

机构地区：[1]西北农林科技大学动物科技学院,陕西杨凌712100

出　　处：《西北农林科技大学学报（自然科学版）》2005年第3期24-28,共5页Journal of Northwest A&F University(Natural Science Edition)

摘　　要：　以陕西省千阳县萨能羊种羊场的产奶羊群为研究对象,共采集5个胎次87只产奶羊的新鲜乳样,用气相色谱仪和乳成分测定仪分别测定了鲜乳的中、短链脂肪酸组成和乳成分含量。结果表明,不同胎次间丁酸(C4∶0)、己酸(C6∶0)、辛酸(C8∶0)和葵酸(C10∶0)的含量差异不显著(P>0.05);但胎次对月桂酸(C12∶0)和肉豆蔻酸(C14∶0)含量的影响作用达显著水平(P<0.05);长链脂肪酸中除亚油酸(C18∶2)含量在胎次间无显著差异(P>0.05)外,棕榈酸(C16∶0)、硬脂酸(C18∶0)和油酸(C18∶1)含量均存在显著差异(P<0.05)。乳成分中乳糖含量在不同胎次间差异不显著(P>0.05),而乳脂含量、乳蛋白含量、乳中干物质含量、乳中非脂固形物含量在不同胎次间均表现出显著差异(P<0.05)。From the dairy herd of the breeding Saanen goat farm in Qianyang county of Shaanxi province,eighty-seven milk samples from Saanen goats of 5 parities were collected to assay the short- and medium-chain fatty acids and milk composition by using gas chromatograph and infrared spectrometer respectively.The results indicated a similar contents of Butyric (C_(4∶0)),Caproic (C_(6∶0)),Caprylic(C_(8∶0)),and Capric (C_(10∶0)) acids among 5 parities (P>0.05);however,the parity had a significant effect on contents of Lauric (C_(12∶0)),Myristic (C_(14∶0)),Palmitic (C_(16∶0)),Stearic (C_(18∶0)),and Oleic (C_(18∶1)) acids (P<0.05) except for the non-significant effect on linoleic (C_(18∶2)) acid content (P>0.05);there was no significant difference in milk lactose content among parities,but the significant effects of parity on fat,protein,dry matter,and milk solid-non-fat contents in milk of Xinong Saanen goat were observed (P<0.05).

关 键 词：西农萨能山羊奶 脂肪酸组分 乳成分分析 胎次 

分 类 号：S879.1[农业科学—畜牧兽医] TS252.1[轻工技术与工程—农产品加工及贮藏工程]