摘要
This study investigated the weight gain performance and economic benefit of probiotic (Saccharomyces cerevisiae) supplementation in PKC based broiler diet. The ideal level of inclusion for optimum broiler productivity was also determined. A total of 140 broiler chicks were randomly distributed into seven groups of 20 birds each. Each group was subdivided into four replicates of five birds each. Groups 1-5 were placed on experimental diet made of 70% basal diet and 30% PKC. Groups 1-4 had probiotic (yeast) supplement at levels of 0.4 gm yeast/kg, 0.8 gm yeast/kg, 1.2 gm yeast/kg and 1.6 gm yeast/kg of feed respectively. Group 5 had no yeast (control 1). Group 6 had no PKC but had yeast (1.2 gm yeast/kg diet). Group 7 had no PKC and no yeast (control 2). All the groups were fed ad libitum. Daily feed intake and weekly weight gain were determined. The duration of the study was 10 weeks. There was no significant difference in feed intake. All the supplemented groups (groups 1-4 and 6) had higher weight gain and higher feed efficiency than the controls (groups 5 and 7). Group 2 had mean weight gain of 2.695±0.086 kg/bird which was significantly heavier (p<0.05) than the rest. Group 2 performed significantly better than others in weight gain and efficiency of feed utilization. The cost of feed to produce 1 kg live weight gain was cheapest in group 2 (N87.62/kg) and most costly in group 7 (N138.83/kg). Probiotic inclusion level of 0.8 gm yeast/kg diet was therefore recommended for optimum broiler production and maximum economic gain.
摘要译文
这项研究调查了PKC根据肉鸡日粮增重性能和益生菌（酿酒酵母）补充经济效益。还确定了包括最佳肉鸡生产力的理想水平。共有140肉鸡，随机分配到7组，每组20只。各组又分为4个重复的每个5鸟。基1-5被放置在实验饮食由70％基础饲料和30％的PKC。1-4组有益生菌（酵母）在补充0.4克酵母/公斤，0.8克酵母/公斤，1.2克酵母/公斤和1.6克酵母/公斤，分别进水平。第5组没有酵母（对照1）。第6组没有PKC，但有酵母（1.2克酵母/ kg饲料）。第7组没有PKC也没有酵母（控制2）。所有组随意喂食。日采食量和每周体重增加进行了测定。该研究的持续时间为10周。有在饲料摄取量没有显著差异。所有补充组（组1-4和6）具有较高的增重和更高的饲料转化效率比对照（组5和7）。第2组有平均2.695±0体重增加。086千克/鸟这是显著较重（P 0.05）比其他人。第2组的表现比其他人在增重和饲料利用效率显著为佳。饲料的成本，生产1公斤活体重增加是最便宜的第2组（N87.62 / kg）和最昂贵的组7（N138.83 /公斤）。 0益生菌添加水平。因此，8克酵母/ kg饲料被推荐为最佳的肉鸡生产和最大的经济利益。
C. Ezema ;D.C. Eze. Performance and Economic Benefit of Broilers Fed Palm Kernel Cake-Based Diet Supplemented with Probiotic[J]. International Journal of Poultry Science, 2009,8(10): 1003-1005