Luo, X. L.

Ma, Y. H.

Ma, Z. J.

Tong, Z. B.

English

University of Kentucky

University of Kentucky UKnowledge International Grassland Congress Proceedings 21st International Grassland Congress / 8th International Rangeland Congress Study on the Characteristics of Yak Meat in Different Domestic Types and Semi‐Wild Yak in Qinghai Plateau X. L. Luo Sichuan Academy of Grassland Sciences, China Z. B. Tong Qinghai Academy of Animal & Veterinary Sciences, China Z. J. Ma Qinghai Academy of Animal & Veterinary Sciences, China Y. H. Ma Qinghai Academy of Animal & Veterinary Sciences, China Follow this and additional works at: https://uknowledge.uky.edu/igc  Part of the Plant Sciences Commons, and the Soil Science Commons This document is available at https://uknowledge.uky.edu/igc/21/9-3/39 The 21st International Grassland Congress / 8th International Rangeland Congress took place in Hohhot, China from June 29 through July 5, 2008. Proceedings edited by Organizing Committee of 2008 IGC/IRC Conference Published by Guangdong People's Publishing House This Event is brought to you for free and open access by the Plant and Soil Sciences at UKnowledge. It has been accepted for inclusion in International Grassland Congress Proceedings by an authorized administrator of UKnowledge. For more information, please contact UKnowledge@lsv.uky.edu. 瞯 ]156　 瞯 　 Multifunctional Grasslands in a Changing World 　 Volume Ⅱ 　Grasslands/Rangelands Production Systems——— Livestock Production SystemsStudy on the characteristics of yak meat in different domestic types and semi‐wild yak in QinghaiPlateuX .L .L uo1 Z .B .Tong2 Z .J . Ma2 and Y .H .Ma21 S ichuan A cademy o f G rassland Sciences ,X ipu ,Chengdu ,611731 ,P .R .China ,E‐mail :luox l2004＠ sina .com2 Qinghai A cademy o f A nimal & Veterinary Sciences ,X ining ,810016 ,P .R .ChinaKey words : amino acid ,heavy metal ,mineral element ,residual pesticide ,yak .Introduction Yaks are mainly distributed in the Qinghai Tibetan Plateau ,the so‐called �non‐pollution district�——— an area withan altitude higher than ３ ,０００m asl . There have been a relatively large amount of studies on the yak摧s conventional nutritionalcomposition ; however ,few studies have reported overall nutritional composition ,amino acid composition ,and level of residualheavy metal or mineral elements in yak meat ( Xie RQ et al ,２００４ ,Yan P et al ,１９８８) . Also there has been no report comparingthe nutritional value between the domestic and the semi‐wild yak .Materials and methods Nine domestic yaks over ６ years old ,comprising five culling male and four culling female ,were selectedfrom Heimahe Township ,Gonghe County near Qinghai lake (�Qinghai Lake" type) and Qumalai County (�Plateau" type) .They were all in good health condition . No supplementary feed was provided . Three male semi‐wild yaks aged ６ months oldwere obtained from DaTong Yak Farm ,and all were in good health condition with natural grazing and with no supplement .Af ter slaughtering ,０ .５ kg meat samples were taken from the front legs ,rear legs and eye muscle in １２‐１３ ribs . The sampleswere collected and frozen . All samples were analyzed at Sichuan Academy for Agriculture ,China .Results The results showed that there are significant differences in content of cystine between �Plateau" type and �QinghaiLake" type ,between �Plateau" type and semi‐wild yak ,but no difference between �Qinghai Lake" type and semi‐wild yak .There are obvious differences in content of histidine between�Plateau" type and�Qinghai Lake" type ,but no difference betweendomestic and semi‐wild yak . There are significant differences in content of magnesium between �Plateau" type and �QinghaiLake" type ,and between domestic and semi‐wild yak . There are significant differences for the contents of copper ,zinc ,ironbetween �Plateau" type and �Qinghai Lake" type ,between �Plateau" type and semi‐wild yak . The contents of zinc ,iron andsodium between domestic and semi‐wild yak are also significant different There are obvious difference for the content betweenplateau and around Qinghai lake type ,between plateau and semiwild yak ,significant difference between yak and semiwild yak .The residual heavy metals and residual pesticides are far below that allowed by the National Standard of China . Further ,thedata showed that cross‐breeding with wild yak has not changed the quality in domestic yak meat .Conclusions Yak meat from Qinghai Plateau has the characteristics of being non‐polluted and rich in amino acids compared withother local cattle meat . The residual heavy metal and pesticide levels in yak meat are far below the National Standard of China .ReferencesXie RQ ,Yang PG(２００４ ) Meat quality test and analysis for different‐age yak . In : Zhong JC ,Zi XD ,Han JL ,Chen ZH ( eds) .Proceedings o f the Fourth International Congress on Y ak ,３７‐４１ . Sichuan Publishing Group ,Chengdu .Yan P ,Guo G ,Li KL ( １９８８ ) Study on performance of beef production of offspring of half blood wild yak and domesticyak Journal o f China Y ak ３‐４ ,１７‐１９ . ( In chinese)

Study on the Characteristics of Yak Meat in Different Domestic Types and Semi‐Wild Yak in Qinghai Plateau

https://uknowledge.uky.edu/cgi/viewcontent.cgi?article=3121&amp;context=igc

Study on the Characteristics of Yak Meat in Different Domestic Types and Semi‐Wild Yak in Qinghai Plateau

Abstract

Similar works

Full text

Available Versions

University of Kentucky