Growth of
redclaw crayfish Cherax quadricarinatus (Von Martens 1868) (Decapoda:
Parastacidae) juveniles fed isoproteic diets with partial or total
substitution of fish meal by soya bean meal: preliminary study
G.M. García-Ulloa, H.M. López-Chavarín,
H. Rodríguez-González, H. Villarreal-Colmenares-2003
Aquaculture
Nutrition, 9(1): 25-32
Abstract:
Growth of juvenile redclaw Cherax
quadricarinatus fed 400 g kg
-1 crude protein isoproteic diets substituting fish meal with soya
bean meal at various levels (250, 500, 750 and 1000 g kg
-1) was evaluated under laboratory conditions. Juvenile crayfish were
reared individually in 1-L plastic containers for 56 days. Total
survival was recorded for all treatments at the end of the experiment. There
were no significant differences (P > 0.05) for the
specific growth rate among the treatments, although the animals fed with the
control diet (100% fish meal) obtained the highest mean daily weight gain
(0.055 g day
-1), individual final weight (4.12 g), molts per individual (0.04 molts day
-1) and molting frequency (23.57 days) values at the end of the
experiment. Dietary inclusion of soya bean meal at the tested levels
hampered the C. quadricarinatus juvenile growth.
(Laboratorio
de Ciencias Marinas, Universidad Autónoma de Guadalajara, Barra de Navidad,
Jalisco, México)