CAJ | 학술논문

本试验旨在研究饲粮中添加发酵酒糟对舍饲牦牛生产性能、养分表观消化率、瘤胃发酵和血清生化指标的影响. 选取20只(208.30±3.31) kg年龄为3周岁的麦洼公牦牛,采用完全随机试验设计,将牦牛随机分为2组( A和B组) ,每组10个重复,每个重复1头牦牛. A组饲喂玉米-豆粕型饲粮,B组饲粮中添加9.25%的发酵酒糟,设计成与A组等氮的玉米-发酵酒糟型饲粮. 试验期60 d. 结果表明:与 A 组相比,1) B 组的干物质采食量和日增重显著提高( P<0.05) ,料重比则显著降低( P<0.05);2) B组的总能、有机物、中性洗涤纤维和酸性洗涤纤维的表观消化率显著提高(P<0.05),而粗蛋白质的表观消化率无显著变化(P=0.471);3)B组显著提高了瘤胃液氨态氮、总挥发性脂肪酸、乙酸和丙酸含量及纤维素酶活性(P<0.05),但乙酸/丙酸无显著变化( P>0.05);4) B组显著提高了血清总蛋白和高密度脂蛋白的含量( P<0.05) ,且有提高球蛋白含量的趋势(P=0.097),而血清谷丙转氨酶、谷草转氨酶活性和白蛋白、尿素氮、胆固醇、甘油三酯和低密度脂蛋白含量无显著变化( P>0.05). 由此可见,饲粮中添加9.25%的发酵酒糟可提高牦牛的生产性能和对营养物质的消化率,但不改变瘤胃发酵类型,且对血清生化指标无不良影响.
본시험지재연구사량중첨가발효주조대사사모우생산성능、양분표관소화솔、류위발효화혈청생화지표적영향. 선취20지(208.30±3.31) kg년령위3주세적맥와공모우,채용완전수궤시험설계,장모우수궤분위2조( A화B조) ,매조10개중복,매개중복1두모우. A조사위옥미-두박형사량,B조사량중첨가9.25%적발효주조,설계성여A조등담적옥미-발효주조형사량. 시험기60 d. 결과표명:여 A 조상비,1) B 조적간물질채식량화일증중현저제고( P<0.05) ,료중비칙현저강저( P<0.05);2) B조적총능、유궤물、중성세조섬유화산성세조섬유적표관소화솔현저제고(P<0.05),이조단백질적표관소화솔무현저변화(P=0.471);3)B조현저제고료류위액안태담、총휘발성지방산、을산화병산함량급섬유소매활성(P<0.05),단을산/병산무현저변화( P>0.05);4) B조현저제고료혈청총단백화고밀도지단백적함량( P<0.05) ,차유제고구단백함량적추세(P=0.097),이혈청곡병전안매、곡초전안매활성화백단백、뇨소담、담고순、감유삼지화저밀도지단백함량무현저변화( P>0.05). 유차가견,사량중첨가9.25%적발효주조가제고모우적생산성능화대영양물질적소화솔,단불개변류위발효류형,차대혈청생화지표무불량영향.
The objective of this study was to determine the effects of fermented distillers' grains supplemented in diets on performance, apparent nutrient digestibility, ruminal fermentation and serum biochemical indices in house-fed yaks. A complete randomized design was adopted in this study, and twenty 3-year-old Maiwa male yaks weighted (208.30±3.31) kg were randomly divided into 2 (A and B) groups with 10 replicates of 1 yak in each group. Yaks in A group were fed corn-soybean diet, and yaks in B group were fed the corn-fermented distillers' grains diet which contain 9. 25% fermented distillers' grains and equal nitrogen content compared with the diet of A group. The experiment lasted for 60 d. The results showed as follows: compared with A group, 1) dry matter intake and daily gain in B group were significantly increased ( P<0.05) , and feed/gain were significantly decreased ( P<0.05);2) the apparent digestibility of gross energy, organic matter, acid de-tergent fiber and neutral detergent fiber in B group were significantly increased ( P<0.05) , but no significantly change was found in that of crude protein ( P=0.471);3) the contents of ammina nitrogen, total volatile fatty acid, acetate and propionate, and total cellulase activity in rumen fluid in B group were significantly increased ( P<0.05) , but no significant difference was found in rumen fluid acetate/propionate ( P>0.05);4) serum to-tal protein and high-density lipoprotein contents in group B were significantly increased (P<0.05), and there was a trend that serum globulin content in B group was increased (P=0.097), but no significant difference was found in serum alanine transarninase and alanine transarninase activities, and albumin, urinary nitrogen, cholesterin, cholesterin and low-density lipoprotein contents (P>0.05). Consequently, the diet that contain 9.25% fermented distillers' grains can improve performance and nutrients digestibility in yaks, but does not change the type of rumen fermentation, and has no adverse effects on serum biochemical indices.