不同料型对育肥后期公驴生产性能和经济效益的影响

为了研究粉状饲料和颗粒饲料对育肥后期公驴生产性能的影响，选取了体重与年龄相近的育肥公驴30头，随机分成2组，每组3个重复，每个重复5头驴，分别饲喂粉状饲料和颗粒饲料，饲喂时间为30 d。试验结束时计算育肥后期公驴平均日增重，并根据当前价格计算经济效益。此外，试验末期进行3 d的消化试验。结果表明：与粉状饲料相比，饲喂颗粒饲料显著（P〈0.05）提高了育肥后期公驴的平均日增重，提高幅度达到4.61%；粗蛋白消化率提高了8.40%，差异显著（P〈0.05）；饲喂颗粒饲料组的经济效益比粉状饲料组减少了12.12元/头。由该试验结果可以得出，对于育肥后期公驴，饲喂粉状饲料的经济效益优于饲喂颗粒饲料。

Effects of Different Feed Types on Productive Performance and Economic Benefits of Late Fattening Donkeys

In order to study the effect of powder feed and pellet feed on the productive performance of late fattening donkey, a total of 30 late fattening male donkeys with similar weight and age were chosen and randomly divided into two groups. There were three replicates for each group and five donkeys for each replicate. One of the two groups was fed with powder feed and the other group was fed with pellet feed. The feeding experiment lasted for 30 days. At the end of the experiment, the average daily gain of the late fattening donkeys in both groups during the whole period were determined and statistically assessed, and the economic benefits of the two groups were measured according to the current price and were compared. Furthermore, a 3-day-long digestion test was carried out at the end of the experiment. The results showed that the average daily gain and crude protein digestibility of the pellet feed group were increased by 4.61% （P〈0.05） and 8.40% （P〈0.05） compared to the powder feed group, respectively; the feeding economic benefit of the pellet feed group was 12.12 Yuan per donkey less than that of the powder feed group. It can be concluded from the results that the power feed performed better in economic benefit than pellet feed for late fattening male donkeys.