Jones, Randall

Lei, Zhaomin

Liu, Zhe

Michalk, David L.

Wu, Jianping

Yang, Lian

Zhang, Liping

English

University of Kentucky

University of Kentucky UKnowledge International Grassland Congress Proceedings 21st International Grassland Congress / 8th International Rangeland Congress Fattening Sheep in a Warm Shed to Compensate for Energy Deficiency in Winter in North‐west China Jianping Wu Gansu Agricultural University, China Zhe Liu Gansu Agricultural University, China Lian Yang Gansu Agricultural University, China David L. Michalk Department of Primary Industries, Australia Liping Zhang Gansu Agricultural University, China See next page for additional authors 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/21/9-3/25 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. Presenter Information Jianping Wu, Zhe Liu, Lian Yang, David L. Michalk, Liping Zhang, Randall Jones, and Zhaomin Lei This event is available at UKnowledge: https://uknowledge.uky.edu/igc/21/9-3/25 瞯 ]142　 瞯 　 Multifunctional Grasslands in a Changing World 　 Volume Ⅱ 　Grasslands/Rangelands Production Systems——— Livestock Production SystemsFattening sheep in a warm shed to compensate for energy deficiency in winter in north‐westChinaWu Jianp ing 倡 ,L iu Zhe 倡 ,Y ang L ian 倡 ＠ ,Dav id Michalk ※ ,Zhang L ip ing 倡 ,Randall Jones ※ ,Lei Zhaomin 倡倡 Faculty o f A nimal Science and Technology ,Gansu A gricultural University ,L anz hou ,730070 ,＠ Corresponding author ,E‐mail : yangl＠ gsau .edu .cn ; ※ Orange A gricultural Institute ,NSW Department o f Primary Industries ,A ustraliaKey words : sheep ,warm shed ,fatty acid calcium salts ( FACS) ,Small Tail Han sheep ( STHS) ,finishing effectIntroduction Grasslands in north‐west of China can experience extremely cold weather conditions which can restrict foragequality and quantity . This leads to a situation of low sheep grow th rates and poor body condition . The main reason for lowsheep grow th rates is the additional energy requirements required to resist cold not being met by forage supply . In theory ,improving energy intake can have the same effect as increasing shed temperature . FACS is a kind of by‐pass rumen fat andenergy additive , and research has shown that feeding it can improve ruminant ADG ( Lai ,２００２ ; Zhao ,２００１ ) . In thisexperiment ,we added FACS to a sheep diet so as to test the effect on fattening sheep in both a warm and ordinary shed .Table 1 Ex perimental design .Shed type ( A ) Intake of FACS( g / sheep 爛 day )B１ ( ０g ) B２ ( ３０g ) B３ ( ６０g )A１ ( ordinary shed) A１ B１ ( １０ sheep) A １ B２ ( ５ sheep) A１ B３ ( ５ sheep)A２ ( w arm shed) A２ B１ ( １０ sheep) A ２ B２ ( ５ sheep) A２ B３ ( ５ sheep)Materials and methods This experiment was arranged in Huajia biotechnical corporation in Lintao County ,China ,where thealtitude was １９１５m ,average annual temperature is １０ .１ ℃ ,and January being the coldest month . An experiment from Nov ２０thto Jan １５th involved ４０ healthy ５ month old STHS ewes weighing on average ２３ kg body weight . The experimental design isgiven in Table １ . The nutritious level of basal diet accorded with the daily nutrient requirements of Xinjiang fine wool sheep( expected daily gain was ２００ g ) .Results and discussion The results ( Table ２ ) showed that in an ordinary shed ,the ADG of ３０g FACS trait and ６０g FACS traitwere １３ .３％ and ３３ .２％ higher than the control treatment ( A１B１ ) ,and ADG of ６０g FACS trait ( A１B３ ) was １７ .６％ higherthan ３０g FACS trait ( A１B２ ) ( P ＜ ０ .０５) . In a warm shed ,ADG and average feed intake ( AFI) among three traits was similar( P ＞ ０ .０５) ,indicating that the effect of adding FACS was correlated to feed condition . The ADG and feed conversion efficiencyof fattening sheep in a warm shed ( A２B１ ) was improved by ９ .４％ and ４ .４％ compared that that of an ordinary shed ( A１B１ ) .The highest profit was obtained for treatment A２B１ ( ￥ ２２ .２３ ) ,where no FACS was added to daily sheep intake in a warmshed . At higher levels of FACS intake ,profit declines due to the high price of FACS not being offset by larger gains in ADG .Table 2 Fattening sheep e f f ect o f adding FACS into dietary in both shed .T rait ADG( g / day )Average feed intake( kg )Concentrate Alfalfa Silage withoutears TotalFeed conversionefficiencyProfit( Yuan)B１ ^１４３ 眄.０８ ± ３３ .６４ ０ 枛.６５ ± ０ .００ ０ い.１７ ± ０ .０１ ０ 膊.２１ ± ０ .０４ １ 靠.０４ ± ０ .０４ １３ s.７９ ± ３ .０１ １８  .０３ ± １６ .９５A １ @B２ ^１６２ 眄.１４ ± ２０ .６４ ０ 枛.６７ ± ０ .０１ ０ い.１７ ± ０ .００ ０ 膊.１８ ± ０ .０２ １ 靠.０２ ± ０ .０３ １５ s.８８ ± ２ .１１ １７  .４２ ± １０ .８０B３ ^１９０ 葺.６３a ± ３７ .２１ ０ 枛.７０ ± ０ .０１ ０ い.１７ ± ０ .００ ０ 膊.１９ ± ０ .０７ １ 靠.０６ ± ０ .０８ １７ s.８０ ± ２ .７３ １８  .６５ ± １７ .５６B１ ^１５６ 眄.４７ ± ２１ .９３ ０ 枛.６５ ± ０ .０１ ０ い.１８ ± ０ .００ ０ 膊.２４ ± ０ .０３ １ 靠.０７ ± ０ .０６ １４ s.３９ ± １ .８９ ２２  .２３ ± １０ .３７A ２ @B２ ^１５７ 眄.８５ ± ３５ .４８ ０ 枛.６６ ± ０ .０３ ０ い.１８ ± ０ .００ ０ 膊.２３ ± ０ .０３ １ 靠.０７ ± ０ .０７ １４ s.８６ ± ３ .８０ １３  .５８ ± １９ .２７B３ ^１５８ 眄.２１ ± １５ .０２ ０ 枛.７０ ± ０ .０２ ０ い.１７ ± ０ .０１ ０ 膊.１９ ± ０ .０５ １ 靠.０７ ± ０ .０５ １４ s.８５ ± １ .０１ １  .１５０ ± ６ .１１Conclusions In this experiment the impact of combinations of adding FACS to daily sheep intake in both ordinary and warmsheds were evaluated . Maximum profit was obtained with a warm shed with no FACS . Adding FACS to sheep diets in a warmshed reduced profit whereas in an ordinary shed there was a slight positive effect for ６０g / day FACS in an ordinary shed .ReferencesLai Changhua ,Kun Lujun ,Zhang Yuqing ,Impact on lamb production performance and meat quality for feeding fatty acidcalcium salts in penfeed system .Chinese Journal o f A nimal Science ,２００２ ,３８(１) :２９‐３０ .Zhao Lifen ,Niu Jinlong ,Guo Cunzhu ,Effect on finishing performance of mutton sheep by feeding fatty acid calcium salts ,Chinese Journal o f A nimal Science ,２００１ ,３７(３ ) ３６‐３７ .

Fattening Sheep in a Warm Shed to Compensate for Energy Deficiency in Winter in North‐west China

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Fattening Sheep in a Warm Shed to Compensate for Energy Deficiency in Winter in North‐west China

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