Dietary inclusion of a partially defatted black soldier fly(Hermetia illucens)larva meal in low fishmeal-based diets for rainbow trout(Oncorhynchus mykiss)  

作　　者：Christian Caimi Ilaria Biasato Giulia Chemello Sara Bellezza Oddon Carola Lussiana Vanda Maria Malfatto Maria Teresa Capucchio Elena Colombino Achille Schiavone Francesco Gai Angela Trocino Alberto Brugiapaglia Manuela Renna Laura Gasco 

机构地区：[1]Department of Agricultural,Forest and Food Sciences,University of Turin,Largo P.Braccini 2,10095 Grugliasco,TO,Italy [2]Department of Veterinary Sciences,University of Turin,Largo P.Braccini 2,10095 Grugliasco,TO,Italy [3]Institute of Science of Food Production,National Research Council,Largo P.Braccini 2,10095 Grugliasco,TO,Italy [4]Department of Comparative Biomedicine and Food Science,University of Padua,Viale dell’Università16,35020 Legnaro,PD,Italy

出　　处：《Journal of Animal Science and Biotechnology》2021年第4期1399-1413,共15页畜牧与生物技术杂志（英文版）

基　　金：This research was funded by AGER project“Fine Feed for Fish(4F)”;lRif.nr.2016-01-01.Dr.Giulia Chemello was supported by a research grant of the University of Turin.

摘　　要：Background:Recent investigations highlighted that Hermetia illucens(BSF)larva meal can be a valuable alternative protein source for aquafeed production.In this study,in substitution of fishmeal,we used increasing inclusion levels of a partially defatted BSF larva meal in low fishmeal-based diets for rainbow trout(Oncorhynchus mykiss Walbaum)and we evaluated the related implications in terms of growth performance,physical characteristics,proximate and fatty acid(FA)compositions of the fillets,gut and liver histology,and diet digestibility.In a 131-day trial,576 fish(100.1±9.29 g)were randomly allotted to 24 tanks(24 fish/tank,4 replicates/treatment).Six experimental diets were produced to have partial replacement of fishmeal(0,10%,20%,30%,40%and 50%)by increasing levels of BSF meal(0%[BSF0],3%[BSF3],6%[BSF6],9%[BSF9],12%[BSF12]and 15%[BSF15]on as fed basis,respectively).Results:No differences were observed among the treatments for all the considered growth performance parameters.The viscero and hepato-somatic indexes showed significant differences among the treatments,with the highest values observed in the BSF15 group.No differences were recorded in terms of fillet’s physical characteristics,dry matter(DM),crude protein(CP)and ether extract(EE)contents.Total saturated and monounsaturated FA increased,while polyunsaturated FA(particularly n-3 FA)decreased while increasing the HI meal inclusion in the diet.Histopathology of liver and gut was not affected,whereas,in posterior gut,villi were higher in BSF6 and BSF9 compared to BSF3 fish.The apparent digestibility of DM,CP,EE and gross energy did not vary among the treatments.Conclusions:These results suggest that a partially defatted BSF meal could be included up to 15%in low fishmeal-based diets for rainbow trout with no adverse effects on growth performance,fillet’s physical characteristics,gut and liver health,and diet digestibility.On the contrary,the fillet FA composition worsened while increasing the level of BSF meal in the diet.

关 键 词：Apparent digestibility coefficient Chemical and physical characteristics of fillets Fatty acid profile Fishmeal substitution Hermetia illucens meal HISTOPATHOLOGY Performance 

分 类 号：S965.122[农业科学—水产养殖]