【作者】 尹国琳； 吴玮琪； 梁晓帅； 赵艳丽； 郭晓宇； 张勇伟； 史彬林； 闫素梅；

【Author】 Guolin Yin;Weiqi Wu;Xiaoshuai Liang;Yanli Zhao;Xiaoyu Guo;Yongwei Zhang;Binlin Shi;Sumei Yan;College of Animal Sciences, Inner Mongolia Agricultural University, Inner Mongolia Key Laboratory of Animal Nutrition and Feed Science;Inner Mongolia Grassland YuLu Science and Technology Farming Co., Ltd.;

【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； 内蒙古草原御驴科技牧业有限公司；

【摘要】 本试验主要研究了日粮能量水平对妊娠后期母驴日增重和营养物质消化率的影响。试验选取24只年龄、体重和预产日期相近的三粉驴,分为高能量日粮组(H)、中能量日粮组(M)和低能量日粮组(L)3个处理组,每个处理8个重复,每个重复1头驴,分别饲喂日粮消化能水平为10.95 MJ/kg(H)、10.53 MJ/kg(M)和9.98 MJ/kg(L)的日粮,试验期为60天。结果表明:H组的妊娠后期母驴采食量和日增重显著高于M组和L组(P=0.043,P=0.014);H组和M组DM和EE的消化率显著高于L组(P=0.001,P<0.0001),M组CP、P、NDF、NDF消化率显著高于H组和L组(P=0.001,P<0.0001,P=0.002,P=0.041),H组Ca的消化率较其他两组显著升高(P=0.0002)。综合本试验结果得出,DE为10.53MJ/kg的中能量组日粮可促进妊娠后期母驴对营养物质的消化,并获得较高的日增重;低能量水平不利于营养物质的消化与母驴的增重.更多还原

【Abstract】 This experiment mainly studied the effects of different dietary energy levels on daily weight gain and nutrient digestibility of female donkeys in late pregnancy.In the experiment, twenty-four donkeys with similar age, weight and expected delivery date were selected and divided into three treatment groups:high-energy diet group(H), medium-energy diet group(M) and low-energy diet group(L).There are 8 replicates for each treatment,and 1 donkey for each replicate.They are fed diets with digestible energy levels of 10.95 MJ/kg(H), 10.53 MJ/kg(M) and 9.98 MJ/kg(L).The trial period is 60 days.The results showed that the average daily feed intake and daily weight gain of the female donkeys in the late pregnancy in the H group were significantly higher than those in the M and L groups(P=0.043, P=0.014);the digestibility of DM and EE in H and M groups was significantly higher than that in L group(P=0.001, P<0.0001).The digestibility of CP, P, NDF, and NDF in group M was significantly higher than that in groups H and L(P=0.001, P<0.0001, P=0.002, P=0.041).The digestibility of Ca in group H was significantly higher than that of the other two groups(P=0.0002).Based on the results of this experiment, it can be concluded that medium energy diet(DE 10.53 mJ/kg) could promote the digestion of nutrients and obtain higher daily weight gain in female donkeys in late pregnancy.Low energy levels of diet decreased nutrient digestion and weight gain in Female donkeys.更多还原