Fisheries by-catch and processing waste meals as ingredients in diets for Nile tilapia, Oreochromis niloticus

Abstract

Digestibility, feeding and growth studies were conducted with Nile tilapia using diets containing ¢shery by-catch and processing waste meals. Three meals manufactured from sorted ¢sheries by-catch (MBM, from mixed benthic species, SPM, from small pelagic species, CAM, from mixed cat¢sh species) one from tuna cannery waste (TCW) and one commercial anchovy meal (COM) were tested. By-catch and processing waste meals had lower protein, lower lipid and higher ash contents than anchovy meal. The meals were all highly digestible and no signi¢cant di¡erences (P ! 0.05) were observed between apparent protein digestibility measurements. Five feeds, containing ¢sh meal as the major protein ingredient, were formulated and fed to triplicate groups of 30 juvenile tilapias for 9 weeks. Survival, weight gain, spe-ci¢c growth rate (SGR), feed conversion ratio, protein e⁄ciency ratio, phosphorus retention and whole body proximate composition were compared. Weight gain and SGRs were similar for each treatment group and compared favourably with the results obtained from juvenile tilapia elsewhere. Growth was the highest for CAM (P 0.05), which contained both the highest essential amino acid levels and the highest ash content. Phosphorus retention was signi¢cantly lower in ¢sh fed with high ash meals, MBM, CAM and TCW (P 0.05) than in ¢sh fed with the lower ash meals COM and SPM. Overall, the ¢sheries by-catch and processing waste meals evaluated in this study are suitable protein ingredients for juvenile tilapia feeds.Ã Values are mean (standard deviation) of triplicate measurements.Aquaculture Research, 2008, 39, 518^525 Fisheries by-catch meals in tilapia diets S Goddard et al.

Use of shrimp protein hydrolysate in Nile tilapia (Oreochromis niloticus, L.) feeds

“…Growth performance of fish fed diets with different marine protein sources as fish meal replacement Shrimp protein hydrolysate: present study b Shrimp head silage: as fish meal replacement in Nile tilapia diet(Plascencia-Jatomea et al 2002) c Shrimp head silage: as fish meal replacement in Clarias gariepinus diet(Nwanna et al 2004) d Fishery by-catch and processing waste meals in Nile tilapia diet(Goddard et al 2008) …”

Mathematical modeling for digestible energy in animal feeds for tilapia

“…( BOSCOLO et al, 2004;BOSCOLO et al, 2008;GODDARD et al, 2008;GUIMARÃES et al, 2008;KÖPRÜCÜ;ÖZDEMIR, 2005;MAINA et al, 2002;SKLAN et al, 2004).…”

“…Differences (p < 0.05) were observed for the ADC of crude protein of feeds. Thus, as the composition of the reference diet may influence the results, feed processing, fecal collecting method, and nutrient levels used for determining the feed ADC are important factors in determining the biological value of each feed, which may present differences with regard to each methodology (GONÇALVES et al, 2009).…”

Perspectives on the Utilization of Aquaculture Coproduct in Europe and Asia: Prospects for Value Addition and Improved Resource Efficiency

“…EU regulations (which will be covered in more detail in Chapter 2) allow for aquaculture by-products to be used in the diets of other species since 2011 (EC 2009a). By-products from capture fisheries have been used in trials for aquafeeds for other fin fish species by Goddard et al (2008), Whiteman and Gatlin (2005) and Seoka et al (2008) amongst others. The results for these studies were mixed, with various by-product and by-catch meals performing well in Nile tilapia diets (Goddard et al 2008) but less so in red drum (Whiteman and Gatlin 2005).…”

“…By-products from capture fisheries have been used in trials for aquafeeds for other fin fish species by Goddard et al (2008), Whiteman and Gatlin (2005) and Seoka et al (2008) amongst others. The results for these studies were mixed, with various by-product and by-catch meals performing well in Nile tilapia diets (Goddard et al 2008) but less so in red drum (Whiteman and Gatlin 2005). Seoka et al (2008) showed that pacific salmon roe phospholipids performed well in blue-fin tuna (Thunnus oreintalis) larval diets.…”