Research output

Article in Journal ()

An experimental analysis of the effects of dietary lipid sources and feeding ration on the reproductive performance, egg and larval quality of Nile tilapia, Oreochromis niloticus (L.)

Citation
Hajizadeh A & Shinn A (2016) An experimental analysis of the effects of dietary lipid sources and feeding ration on the reproductive performance, egg and larval quality of Nile tilapia, Oreochromis niloticus (L.), Iranian Journal of Fisheries Sciences, 15 (3), pp. 1187-1201.

Abstract
This study investigates the effects of dietary lipid sources on the growth and reproductive performance of Nile tilapia over three consecutive spawnings. Fish were reared using three experimental diets, with the goal of replacing dietary fish oil with palm oil. Three experimental diets and a commercial trout diet was used as the control. The effect of dietary lipid on the growth performance, spawning interval, fecundity, relative fecundity (number of eggs per unit weight), egg size, egg fertilization and hatching rate in addition to an assessment of larval quality was investigated. Growth was significantly (p<0.05) influenced by the source of dietary lipid used. The source of the dietary lipid, however, had no significant effect on the diameter of the eggs, as well as their volume or dry weight. Despite this, relative fecundity was found to be significantly different between fish fed experimental diets and those fed the control diet; there was no difference between those fed the PO and mixed PO:CO diets (p>0.05). Similar results were observed for the egg to body weight ratio (EW: BW) and the inter-spawning interval (ISI) for the fish fed control diet (diet 4). The total fecundity (number of eggs produced per fish) obtained from the fish fed the mixed oil diet (PO:CO) was significantly higher (p<0.05) than from those fed the palm oil and control diets. This study suggests that palm oil can replace fish oil in diets fed toO. niloticuswith no subsequent negative effects on the eggs and larval quality

Keywords
Nile tilapia; Oreochromis niloticus; Diet; Growth; Lipid; Reproduction; Egg; Larval quality

StatusPublished
AuthorsHajizadeh Ali, Shinn Andrew
Publication date07/2016
Publication date online09/08/2016
Date accepted by journal09/08/2016
URLhttp://www.jifro.ir/…=en&sid=1&ftxt=1
PublisherIranian Fisheries Science Research Institute
ISSN 1562-2916
LanguageEnglish

Journal
Iranian Journal of Fisheries Sciences: Volume 15, Issue 3 (2016)

© University of Stirling FK9 4LA Scotland UK • Telephone +44 1786 473171 • Scottish Charity No SC011159
My Portal