草业学报Issue(3)：205-214,10.DOI:10.11686/cyxb20140324
向日葵秆和向日葵盘对绵羊营养价值的评定
Nutritional evaluation of sunflower straw and plate in sheep
摘要
Abstract
Six Gansu alpine sheep with 28 kg in average weight and fitted with permanent rumen fistula were chosen to investigate the nutritional evaluation of sunflower straw and plate on sheep in a 3×3 Latin square de-sign.1)On an air dry basis,dry matter,crude protein,ether extract,crude fiber,neutral detergent fiber, acid detergent fiber,calcium,phosphorus were 90.73%,5.72%,0.89%,30.15%,53.09%,39.40%, 11.61%,0.84%,0.13% respectively in sunflower straw and 89.63%,11.84%,2.13%,12.48%,23.51%, 15.41%,14.04%,0.97%,0.29% in sunflower plate.2)The digestibility of dry matter ,nitrogen,organic matter,neutral detergent fiber,acid detergent fiber,calcium,phosphorus were 61.61%,65.37%,65.19%, 48.18%,44.89%,29.10%,26.07% respectively in sunflower straw and 70.96%,69.57%,76.26%, 60.87%,58.60%,37.98%,44.75% in sunflower plate.The nitrogen retention rate and digestive energy were 34.72%,8.75 MJ/kg respectively in the straw and 41.40%,9.97 MJ/kg in the plate.3)When feeding sun-flower straw to sheep,there were significant (P<0.05)differences in molar ratios of acetic acid and ammoni-um nitrogen in rumen fluid.There were no differences in pH,total volatile fatty acids,molar ratio of propio-nate acid,butyrate,other acids and total nitrogen,urea nitrogen,protein nitrogen in rumen fluid (P>0.05). When feeding sunflower plate to sheep,there were significant (P<0.05)differences in molar ratios of acetic acid,propionate acid,and the ratios of acetic acid to propionate in rumen fluid.There were no differences in pH,total volatile fatty acids,in molar ratios of butyrate,other acids and nitrogen in rumen fluid.关键词
向日葵秆/向日葵盘/绵羊/营养价值/评定Key words
sunflower straw(Helianthus annuus)/sunflower plate/sheep/nutritional value/evaluation分类
农业科技引用本文复制引用
钟方寅,郑琛,李发弟,刘婷..向日葵秆和向日葵盘对绵羊营养价值的评定[J].草业学报,2014,(3):205-214,10.基金项目
甘肃陇原中天生物工程股份有限公司研发项目（ZTSW-2009-002）和现代农业产业技术体系建设专项资金（CARS-39）资助。 （）
