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《Acta Prataculturae Sinica》 2011-06
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Nutritional evaluation of Helianthus tuberosus meal on lactating dairy cows

ZHAO Fang-fang1,ZHENG Chen1,LI Fa-di1,2,HAN Xiang-min1,HAO Zheng-li1(1.Faculty of Animal Science and Technology,Gansu Agricultural University,Lanzhou 730070,China; 2.Gansu Feed Engineering Technology Research Center,Lanzhou 730000,China)  
A 3×3 latin square design was used to determine the nutritive value of Helianthus tuberosus meal with six lactating Holstein dairy cows.1) On an air dry basis,dry matter,crude protein,ether extract,crude fiber,nitrogen-free extract,neutral detergent fiber,acid detergent fiber,calcium,phosphorus,and milking energy of H.tuberosus meal were 92.43%,2.98%,0.81%,12.67%,25.93%,21.44%,3.92%,0.27%,0.20% and 5.18 MJ/kg respectively.H.tuberosus meal was a poor energy feed for dairy cows.2) The digestibility of dry matter,crude protein,neutral detergent fiber and acid detergent fiber of H.tuberosus meal(on an air dry basis),were 61.78%,73.21%,51.65% and 61.14% respectively.The digestible energy and net energy were 10.13 and 5.18 MJ/kg.In three treatments the digestibility of compendium nutritive matters tended to decrease.H.tuberosus meal was higher in feed digestibility than the common meal and had no influence on dairy cows.3) The addition of H.tuberosus meal to the dairy ration did not affect the production performance.
【Fund】: “十一五”奶业国家科技支撑计划(2006BAD04A03)专项经费资助
【CateGory Index】: S823.5
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