动物营养学报2018，Vol.30Issue(4)：1555-1565,11.DOI:10.3969/j.issn.1006-267x.2018.04.041
不同葡萄籽酿酒残渣水平全混合日粮在育肥羊瘤胃内的有效降解率
Effective Degradability of Total Mixed Ration with Different Levels ofBrewing Residue of Grape Seed in Rumen of Fattening Sheep
摘要
Abstract
The purpose of this experiment was to evaluate the effective degradability of total mixed ration (TMR)with different levels of brewing residue of grape seed(GSBR)in rumen of fattening sheep. Three Ka?zakh wethers weighed(35.0±3.7)kg with permanent rumen cannulas were used as experimental animals. The test consists of five periods, rumen perfusion tests were conducted using TMRs with different GSBR levels[0 (TMR1),4.17%(TMR2),8.33%(TMR3),12.50%(TMR4)and 16.67%(TMR5)],respectively. The tests were carried out from low to high GSBR levels. Each period lasted for 15 d, day 1 to 7 was for pre?test period, day 8 to 12 was for continuous perfusion period, and day 13 to 15 was for sampling period. At the same time, the nylon bag test was carried out on day 13 to 15 of each period. Ytterbium?acetate(Yb?ac)was used as the marker for digesta,and its decay curve was mapped to calculate outflow rate(Kp)using nonlinear regression; degradation kinetic parameters of dry matter(DM), organic matter(OM)and crude protein (CP)were evaluated,and ruminal effective degradability was calculated. The results showed as follows:rumi?nal digesta Kp had significantly linearly positive relationship with GSBR level(r=0.607 0, P<0.05); effec?tive degradability of DM, OM and CP showed then tendency of firstly decrease and then stable or slightly in?crease with the increase of GSBR level in TMR,TMR4 and TMR5 groups were significantly lower than TMR1 group(P<0.05); the five TMRs were all ruminal energy and nitrogen negative balance type,and ruminal en?ergy nitrogen balance value was linearly decreased with the increase of the GSBR level(P=0.005 5). In con?clusion, the optimal level of GSBR in TMR for fattening sheep is 8.33% to 12.50%.关键词
外流速度/瘤胃降解率/有效降解率/瘤胃能氮平衡/育肥羊Key words
outflow rate/ruminal degradability/effective degradability/ruminal energy and nitrogen balance/fattening sheep分类
农业科技引用本文复制引用
高新梅,张帆,唐福,贾春云,杨振华,高巍..不同葡萄籽酿酒残渣水平全混合日粮在育肥羊瘤胃内的有效降解率[J].动物营养学报,2018,30(4):1555-1565,11.基金项目
国家自然基金项目(31260557) （31260557）
兵团博士资金专项(2013BB018) （2013BB018）
