Apparent digestibility of lipid and fatty acids in fish oil, poultry fat and vegetable oil diets by Atlantic halibut, Hippoglossus hippoglossus L.

Par Conseil national de recherches du Canada

DOI	Trouver le DOI : https://doi.org/10.1016/j.aquaculture.2009.05.016
Auteur	Rechercher : Martins, Dulce Alves¹; Rechercher : Valente, Luisa M.P.; Rechercher : Lall, Santosh P.¹
Affiliation	Conseil national de recherches du Canada. Institut des biosciences marines du CNRC
Format	Texte, Article
Sujet	lipids; lipid; fatty acids; fatty acid; Atlantic halibut; apparent digestibility; cholestane; Hippoglossus hippoglossus L.
Résumé	An experiment was conducted to determine the apparent digestibility coefﬁcients (ADC) of lipid and fatty acids of 5 experimental diets containing 18% lipid from the following sources: herring oil (HO), poultry fat (PF), ﬂaxseed (FxO), canola (CO) and sunﬂower (SO) oils. Cholestane and chromic oxide were used as inert digestibility markers. Juvenile halibut (109.5 ±27.6 g) were held in tanks equipped with fecal collection columns and fed the experimental diets for 2 weeks. The average lipid ADC (%) of FxO, CO, and SO diets were 94.8 ±0.7, 93.4 ±0.5 and 93.3 ±0.2, respectively, and these values were higher than the ADC of HO (89.7 ± 0.1) and PF (89.8 ±1.5) diets. The apparent digestibility of saturated fatty acids was lower than that of unsaturated fatty acids. The ADC of monoenoic fatty acids was lowest in groups fed PF diet (88.0 ±1.3%) and highest with FxO diet (96.1 ±0.3%), followed by groups fed CO and SO diets. Polyunsaturated fatty acids were better digested from the FxO diet and the PF diet showed the lowest values. The FxO and SO diets, which contained higher amounts of n-6 fatty acids, also showed relatively high ADC values of these fatty acids. These results suggest that vegetable oils are well utilized by juvenile halibut, and particularly FxO shows good potential to replace HO in commercial halibut feeds.
Date de publication	2009-09
Dans	Aquaculture 294, nº 1-2 (septembre 2009) : 132–137.
Langue	anglais
Numéro du CNRC	NRCC 55517 1427
Numéro NPARC	3538355
Exporter la notice	Exporter en format RIS
Signaler une correction	Signaler une correction (s'ouvre dans un nouvel onglet)
Identificateur de l’enregistrement	11434d9d-c5f9-410d-bc4b-ec9ed82bd8e5
Enregistrement créé	2009-03-01
Enregistrement modifié	2020-04-16

Date de modification :: 2024-04-20