Department of Animal Science, School of Animal and Veterinary Sciences, Fiji National University, P.O. Box 7222, Nasinu, Fiji.
School of Environmental and Rural Sciences, University of New England, Armidale, NSW, 2351, Australia.
Trop Anim Health Prod. 2022 Sep 12;54(5):290. doi: 10.1007/s11250-022-03287-4.
The effects of leaf meals on growth performance of broiler chickens have been evaluated in different studies. However, no consensus has been obtained due to the variability of the results. The present study, therefore, aimed to provide a meta-analysis of randomized controlled trials examining the effects of feeding leaf meals on growth performance of broiler chickens. Literature was searched using Google Scholar, Science Direct, Scopus, and CAB Abstracts. References from eligible studies were also thoroughly reviewed to identify additional studies. Keywords used for searching the articles were leaf meals, broilers, growing, finishing, and performance. The response measures extracted from individual studies for analysis were average daily feed intake (ADFI), average daily gain (ADG), feed conversion ratio (FCR), sample size, and standard error of the mean. Eighteen studies were included in the meta-analysis. Average daily feed intake, ADG, and FCR responses to leaf meal-based diets average - 4.82 g, - 5.44 g, and 0.40, respectively. Combining the effect size estimates, our data were highly heterogeneous for ADFI (98.57%) and FCR (81%), and a moderate heterogeneity for ADG (65.11%). Evidence of publication bias was visually confirmed for ADFI, ADG, and FCR from the funnel plots. However, using the weight-function model did not show any evidence of publication bias for ADG (P > 0.05). The meta-analysis study has indicated that leaf meals can positively influence growth performance in chickens.
不同研究已评估了叶粉对肉鸡生长性能的影响。然而，由于结果的可变性，尚未得出共识。因此，本研究旨在对评估叶粉喂养对肉鸡生长性能影响的随机对照试验进行荟萃分析。使用 Google Scholar、Science Direct、Scopus 和 CAB Abstracts 搜索文献。还仔细审查了合格研究的参考文献，以确定其他研究。用于搜索文章的关键词是叶粉、肉鸡、生长、育肥和性能。从个体研究中提取用于分析的反应措施是平均日采食量（ADFI）、平均日增重（ADG）、饲料转化率（FCR）、样本量和均数的标准误差。共有 18 项研究纳入荟萃分析。基于叶粉的日粮对平均日采食量、ADG 和 FCR 的影响分别为-4.82g、-5.44g 和 0.40。综合效应量估计值，我们的数据在 ADFI（98.57%）和 FCR（81%）方面高度异质，在 ADG（65.11%）方面中度异质。从漏斗图中可以直观地确认 ADFI、ADG 和 FCR 存在发表偏倚的证据。然而，使用权重函数模型并未显示 ADG 存在发表偏倚的证据（P>0.05）。荟萃分析研究表明，叶粉可以积极影响鸡的生长性能。
