The effects of different feeding times and diets on the whole body fatty acid composition of goldfish (Carassius auratus) larvae

Abstract

On this study, the effects on whole body fatty acid levels of goldfish larvae (Carassius auratus) caused by different feeding times T (1-4) and diets D (1-3) were investigated during the early larval stages which is the first 15 days' of feeding. Fatty acid levels for all experimental groups were found to be: 1.54 to 3.45% for myristic acid, 17.57 to 22.68% for palmitic acid, 28.81 to 41.16% for total saturated fatty acids-∑SFA, 2.37 to 4.04% for palmitoleic acid, 13.79 to 39.21% for oleic acid, 22.60 to 47.59% for total monounsaturated fatty acids-∑MUFA, 3.62 to 7.69% for linolenic acid-ALA, 0.35 to 1.11% for arachidonic acid-ARA, 7.50 to 9.76% for total n-6 fatty acids-∑ n-6, 1.04 to 2.28% for linoleic acid-LA, 0.81 to 2.52% for eicosapentaenoic acid-EPA and 5.56 to 10.28% for docosahexaenoic acid-DHA. The total n-3 acids-∑ n-3, total polyunsaturated fatty acids-∑PUFA, PUFA/SFA ratio, ∑ n-6/∑ n-3 and DHA/EPA ratio of the experimental groups were determined to be 7.24 to 14.83%, 14.73 to 23.46%, 0.47 to 0.73, 0.58 to 1.04 and 3.21 to 8.7, respectively. On conclusion, the whole body fatty acid levels of goldfish larvae (Carassius auratus) determined in this study revealed the significant effects of different feeding times (T 1-4) and different diets (D 1-3) using (P < 0.05).

The Effect of Feeding with Chironomid and Artemia on Fatty Acids and Amino Acids Profiles in Persian Sturgeon (Acipenser persicus) Larvae

“…The nutritional performance of fish larvae in utilizing live food is influenced by several factors, including the biochemical composition of the live food [25,26]. The FA composition of larval body, when exposed to different live food sources, depends on both the profile of the live food and the fish's ability to digest and absorb these nutrients [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27].…”

“…The FA composition of the body serves as an indicator of the FA required by the larvae [15,16]. In general, the EFAs profile of fish carcasses is deemed a reliable indicator for fulfilling the nutritional requirements of larvae [17,18].…”