Article (Scientific journals)
A Meta-Analysis of the Effects of Insects in Feed on Poultry Growth Performances
Moula, Nassim; Detilleux, Johann
2019In Animals, 9, p. 201
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Keywords :
insects in feed; alternative protein source; poultry growth; meta-analysis
Abstract :
[en] We investigated and summarized results from studies evaluating the e ects of feeding poultry with insects on their growth performances. After a systematic review of studies published since 2000, two independent reviewers assessed the eligibility of each one based on predefined inclusion criteria. We extracted information on the study design, insects, avian species, and growth performances, i.e., average daily gain, feed intake, and feed conversion ratio. Next, we estimated pooled di erences between performances of poultry fed a diet with vs. without insects through random-e ects meta-analysis models. Additionally, these models evaluated the e ects of potential sources of heterogeneity across studies. Of the 75 studies reviewed, 41 met the inclusion criteria and included 174 trials. With respect to diets without insects, pooled di erences in growth performances were statistically not di erent from the null, but heterogeneity was marked across studies. Average daily gain decreased with increasing inclusion rates of insects, going below the null for rates of 10% and more. Grasshoppers were negatively associated with the average daily gain and positively associated with feed intake. The country of publication was another source of heterogeneity across publications. Overall, our results show insects should substitute only partially conventional protein sources and not be grasshoppers to guarantee the appropriate growth of birds.
Disciplines :
Animal production & animal husbandry
Author, co-author :
Moula, Nassim  ;  Université de Liège - ULiège > Dpt. de gestion vétérinaire des Ressources Animales (DRA) > Génétique quantitative
Detilleux, Johann ;  Université de Liège - ULiège > Dpt. de gestion vétérinaire des Ressources Animales (DRA) > Génétique quantitative
Language :
English
Title :
A Meta-Analysis of the Effects of Insects in Feed on Poultry Growth Performances
Publication date :
28 April 2019
Journal title :
Animals
eISSN :
2076-2615
Publisher :
MDPI AG, Switzerland
Volume :
9
Pages :
201
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 11 June 2019

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