Liu, Kai

Luo, Hailing

Xu, Yongfeng

Zhang, Xiaohong

Zhang, Yingjun

English

University of Kentucky

University of Kentucky UKnowledge International Grassland Congress Proceedings 21st International Grassland Congress / 8th International Rangeland Congress Effect of Different Feeding Methods on Fatty Acids Composition in Muscle of Nanjiang Yellow Goat Hailing Luo China Agricultural University, China Yongfeng Xu China Agricultural University, China Yingjun Zhang China Agricultural University, China Xiaohong Zhang China Agricultural University, China Kai Liu China Agricultural University, 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/21/9-2/48 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. 　 Multifunctional Grasslands in a Changing World 　 Volume Ⅱ 　 瞯 ]115　 瞯Grasslands/Rangelands Production Systems——— Livestock Production SystemsEffect of different feeding methods on fatty acids composition in muscle of Nanjiang Yellow GoatLuo H ailing ,X u Yong f eng ,Zhang Y ing j un ,Zhang X iaohong ,and L iu K aiCollege o f A nimal Science and Technology ,China A gricultural University ,Bei j ing 100094 ,ChinaKew words :Nanjiang Yellow Goat ,kids ,feeding method ,fatty acidsIntroduction Nanjiang Yellow Goat is a new and unique goat bred for mutton through selected‐breeding for ４０ years in China .Itis well known for its high mutton quality .The feeding methods could affect mutton quality ,including mutton taste ( Arsenos etal . ,２００２) .This study was aimed to investigate the effect of different feeding methods on fatty acids composition in muscle ofNanjiang Yellow Goat .Materials and methods Nanjiang Yellow Goat Stud is in a semi‐tropical climate region at the altitude of １３００‐２０００ m in Nanjiangcounty ,Sichuan province ,China .It is cold and humid in early spring ,hot and short in summer and cold and long in winter .Theannual averaged temperature ,precipitation , relative humidity and evaporation are １６ .２ ℃ ,１１９９ mm ,７２％ and １３９１ mm ,respectively .In this study ,３２ two‐month old weaning Nanjiang Yellow Goat hedlthy male kids with similar body weight ( BW) were selectedand randomly divided into two groups as control ( grazing all day) and the treatment ( grazing with supplement feeding ) .Threegoat kids from each group were slaughtered to collect longissimous muscle samples at ２ ,４ and ６ months for the fatty acidcomposition measurement .The data were subjected to one‐way analysis of variance using GLM procedure in SAS (１９８９) .Results and discussion The fatty acid composition of longissimous muscle and gluteus of Nanjiang Yellow Goat kids was shownin Table １ .The content of Saturated Fatty Acids ( SFA) has decisive influence on nutrition value of the mutton ( Callow ,１９５８) .Higher SFA could induce the amount of human blood cholesterol increasing ( Grundy et al . ,１９８２) .In this study ,the contents ofSFA increased gradually as the age increases .However ,compared with the control ,the content of SFA was lower at ４ and ６months .The results implied that the content of SFA in muscle was reduced by grazing with supplement feeding .The short‐chainfatty acids ( SCFA ) are the metabolism production of the rumen microbe fermenting forage grass .The contents of SCFAbetween the two groups at the same age were not significantly difference .Table 1 Fatty acid composition o f longissimous muscle and gluteus o f Nanj iang Yellow Goat kids .M uscle Item２‐month old ４‐month old ６‐month oldT reatment Cont rol T reatment Cont rol T reatment Cont rolLongissimousmuscleSFA ４７ 篌.７４ ± ３ .３５ ４７ X.１８ ± ３ .７９ ４４ 揪.６０ ± ２ .０２ ４８ #.９９ ± ５ .２３ ４６ 墘.８６ ± １ .９３ ５３  .６５ ± ７ .６６SCFA ( C６‐C１２ ) ０ 行.２８ ± ０ .０７b ０ 6.３６ ± ０ .０７b ０ 洓.３０ ± ０ .０１ b ０  .３６ ± ０ .０４b １ ].１２ ± ０ .４１ ab １ 腚.９２ ± １ .３８aGluteusSFA ４９ 邋.９４ ± ３ .２６a ４３ I.３９ ± ４ .１５b ５４ 哪.４９ ± ４ .３ a ５５  .４０ ± １ .１０a ５６ {.１９ ± ３ .０７a ５８ .０３ ± ４ .３aSCFA ( C６‐C１２ ) ０ 行.３２ ± ０ .０１b ０ 6.３３ ± ０ .０１b ０ 洓.３６ ± ０ .１１ b ０  .４５ ± ０ .０８b ２ h.３７ ± ０ .９４ a ２ 腚.２４ ± ０ .７５aMeans with different upper case letters within the same row differ P ＜ ０ .０１ .Means with different lower case letters within the same row differ at P ＜ ０ .０５ .Conclusion Grazing with supplement feeding can increase the content of Unsaturated Fatty Acids ( UFA ) in Nanjiang YellowGoat kids muscle ,decrease the content of short‐chain fatty acids .ReferencesArsenos ,G . ,Banos ,G . ,Fortomaris ,P . ,Katsaounis ,N . ,Stamataris ,C . ,Tsaras ,L . ,Zygoiannis ,D .２００２ .Eating quality of lambmeat : effects of breed ,sex ,degree of maturity and nutritional management .Meat Sci , ６０ : ３７９‐３８７ .Callow E H .１９５８ .Comparative studies of meat .VI .Factors affecting the idine number of fat from the fatty andmuscular tissueof lambs .J .A gr .Sci . ( Camb .) ５１ : ３６１ .Grundy S M ,Bilheiman D ,Blackburn ,H ,Brown W V ,Kwiterovich P O ,Mattson F ,Schonfeld G ,Weidman W H .１９８２ .Rationalof the diet‐heart statement of the American heartassociatioa : Report o f Nutrition committee . Circulation ６５ : ８３９‐８５４ .

Effect of Different Feeding Methods on Fatty Acids Composition in Muscle of Nanjiang Yellow Goat

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Effect of Different Feeding Methods on Fatty Acids Composition in Muscle of Nanjiang Yellow Goat

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