【作者】 梁晓帅； 岳远西； 辉芳； 张婧； 佟满满； 李丽； 郭晓宇； 赵艳丽； 郭咏梅； 史彬林； 闫素梅；

【Author】 LIANG Xiaoshuai;YUE Yuanxi;HUI Fang;ZHANG Jing;TONG Manman;LI Li;GUO Xiaoyu;ZHAO Yanli;GUO Yongmei;SHI Binlin;YAN Sumei;College of Animal Science,Key Laboratory of Animal Nutrition and Feed Science at Universities of Inner Mongolia Autonomous Region,Inner Mongolia Agricultural University;

【机构】 内蒙古农业大学动物科学学院内蒙古自治区高校动物营养与饲料科学重点实验室；

【摘要】 试验旨在研究饲粮中性洗涤纤维/非纤维性碳水化合物(NDF/NFC)对泌乳驴产乳性能、泌乳期失重和营养物质消化的影响,为泌乳期母驴饲粮的合理配制提供理论依据。采用单因素完全随机试验设计,将16头年龄(6.73±1.16)岁、体重(250.84±27.21)kg、胎次(3.25±1.12)胎和泌乳天数(40±4)d的德州驴分为对照组(CON)和试验组(TRM),CON组饲粮精粗比30:70(NDF/NFC为1.65),TRM组饲粮精粗比为40:60(NDF/NFC为1.48),试验期8周。结果表明:整个试验期,CON组挤奶量、估计产奶量、产乳效率、乳蛋白合成率、乳蛋白产量、非脂固形物产量以及总固形物产量显著高于TRM组(P<0.05);CON组在试验全期干物质(DM)和总能(GE)表观消化率、第4周酸性洗涤纤维(ADF)表观消化率以及第8周NDF和钙(Ca)表观消化率显著高于TRM组(P<0.05)。因此,等能等蛋白条件下,饲粮精粗比由30:70增加到40:60,NDF/NFC由1.65降至1.48,不利于泌乳驴产乳性能的发挥和营养物质的消化。更多还原

【Abstract】 This experiment was conducted to study the effects of dietary neutral detergent fiber/nonfibrous carbohydrate(NDF/NFC) on lactating performance,body weight loss and nutrient apparent digesti on of lactation donkeys,and to provide a theoretical basis for rational diet formulation of female donkeys during lactation.Sixteen Dezhou donkeys with similar age of(6.73±1.16) years,body weight of(250.84±27.21) kg,parity of(3.25±1.12)parity and days in milk of(40±4) d were divided into CON group(conce ntrate to forage ratio was 30:70,NDF/NFC was 1.65) and TRM group(concentrate to forage ratio 40:60,NDF/NFC was 1.48) with 8 donkeys in each group.The experiment lasted for 8 weeks.The results show ed that the milking yield,estimated milk yield,milk production efficiency,milk protein production efficie ncy,milk protein production,non-fat solid production and total solid production in CON group were sign ificantly higher than those in TRM group(P<0.05).The apparent digestibility of dry matter(DM) and gr oss energy(GE),the apparent digestibility of acid detergent fiber(ADF) at week 4 and the apparent digesti bility of NDF and calcium(Ca) at week 8 were significantly higher than those in TRM group(P<0.05).I n conclusion,under the same dietary energy and protein conditions,increasing the dietary concentrate to fo rage ratio from 30:70 to 40:60,decreasing the NDF/NFC from 1.65 to 1.48,is not conducive to the dev elopment of lactating performance and nutrient digestion of lactating donkeys.更多还原