Kinati Chala, Ameha Nagasi, Girma Meseret, Nurfeta Ajebu
Department of Animal Sciences, Ambo University, P O Box 19, Ambo, Ethiopia.
School of Animal and Range Sciences, Haramaya University, P O Box 138, Dire-Dawa, Ethiopia.
Heliyon. 2022 Jun 1;8(6):e09568. doi: 10.1016/j.heliyon.2022.e09568. eCollection 2022 Jun.
The effects of effective microorganisms (EM), turmeric powder (TP), and their combination (EM-TP) on broiler performance, carcass characteristics, and economic benefit were studied in broilers fed a concentrate-based diet. A total of 192 chicks were assigned to four dietary treatments having CTL = control, EM = CTL+1 ml/lit effective microorganisms, TP = CTL+1%TP, EM-TP = CTL+0.5 ml/litEM+0.5%TP following a completely randomized design of 3 replications for each treatment. Concentrate was fed ad-libitum to all treatment groups. The feeding experiment lasted 42 days, 21 days for the starter and finisher phases each. The highest (P < 0.001) feed intake was observed when EM was fed as the sole additive and EM-TP during the starter period while the lowest (P > 0.05) value was for TP alone. There was no significant difference in feed intake during the finisher and the entire experimental period. The average daily gain for EM was higher (P < 0.05) than that of CTL and TP during the starter phase. However, during the finisher phase the average daily gain for EM-TP was greater (P < 0.05) than for TP and CTL. The greatest (P < 0.05) average daily gain was for EM-TP and EM during the entire period. The feed conversion ratio, performance index, mortality, and carcass characteristics were similar (P > 0.05) among treatments. The highest (P < 0.05) abdominal fat was observed in the control group. The finding indicates that a greater net return was earned from EM-TP while a lower net return was observed for TP. In conclusion, supplementation of EM (1 ml/lit) and the combination (EM-TP) at 0.5% each are better in terms of average body weight gain, the net return, and in decreasing abdominal fat.
在以浓缩饲料为基础日粮的肉鸡中，研究了有效微生物（EM）、姜黄粉（TP）及其组合（EM-TP）对肉鸡生产性能、胴体特性和经济效益的影响。总共192只雏鸡被分配到四种日粮处理组，分别为CTL=对照组、EM=CTL+1毫升/升有效微生物、TP=CTL+1%TP、EM-TP=CTL+0.5毫升/升EM+0.5%TP，每个处理组进行3次重复的完全随机设计。所有处理组的浓缩饲料均自由采食。饲养实验持续42天，育雏期和育肥期各21天。在育雏期，当单独添加EM以及添加EM-TP时，采食量最高（P<0.001），而单独添加TP时采食量最低（P>0.05）。在育肥期和整个实验期，采食量没有显著差异。在育雏期，EM组的平均日增重高于CTL组和TP组（P<0.05）。然而，在育肥期，EM-TP组的平均日增重高于TP组和CTL组（P<0.05）。在整个实验期，EM-TP组和EM组的平均日增重最大（P<0.05）。各处理组之间的饲料转化率、生产性能指数、死亡率和胴体特性相似（P>0.05）。对照组的腹脂含量最高（P<0.05）。结果表明，EM-TP组的净收益更高，而TP组的净收益较低。总之，添加1毫升/升的EM以及各添加0.5%的组合（EM-TP）在平均体重增加、净收益和减少腹脂方面效果更好。
