[Lecithin essay in the diet of young Penaeus vannamei (Crustacea: Decapoda)].
The effect of different lecithin sources and presentations on growth, food conversion ratio and survival of P. vannamei (290 mg +/- 0.02) was studied. The bioassay was designed in order to compare different dietary levels and different quality of lecithin. Squid lecithin, crude soybean (7%), deoiled soybean lecithin (3.48%) in combination with fish oil or squid neutral lipids, in a partially dilapidate formula. The isoenergetic diets were fed ad libitum to four replicate groups (tanks) of 15 shrimps each (5 x 4 x 15), during 28 days. The result of the bioassay with the partially dilapidate formulas was; the best growth rate (191%) and FCR (1.69 +/- 0.041) were obtained with the diet containing 7% of soybean crude lecithin as the unique lipid source. Followed by the diet countering 3.94% deoiled lecithin and 2.42% Menhaden oil (172% and 2.03 +/- 0.054 respectively). As expected, the worst results were obtained without the dietary lecithin 121% and 2.42 +/- 0.129). Crude soybean lecithin alone covered the phospholipid and neutral lipids requirements as well as the combination of deoiled soybean lecithin with fish or squid oil.
Re-Araujo
Ana Denisse
AD
Departamento de Acuicultura, Centro de Investigación Científica y de Educación Superior e Ensenada (C.I.C.E.S.E.), Kilómetro, 107 Carretera, Tijuana-Ensenada, México. denisre@cicese.mx
Acosta Ruiz
M de Jesús
Mde J
D000821:Animal Feed; D000818:Animals; D004032:Diet; D004041:Dietary Fats / Q000008:administration & dosage; D005395:Fish Oils / Q000008:administration & dosage; D033561:Penaeidae / Q000254:growth & development*; D010713:Phosphatidylcholines / Q000008:administration & dosage*; D013024:Soybean Oil / Q000008:administration & dosage; D015430:Weight Gain
D004041:Dietary Fats; D005395:Fish Oils; D010713:Phosphatidylcholines; D013024:Soybean Oil