TY - JOUR
T1 - Dietary lipid requirements for optimal egg quality of redclaw crayfish, cherax quadricarinatus
AU - Rodríguez-González, Hervey
AU - Villarreal, Humberto
AU - García-Ulloa, Manuel
AU - Hernández-llamas, Alfredo
PY - 2009
Y1 - 2009
N2 - The effect of three crude dietary lipid levels (4, 8, and 12%) on egg quality of the female redclaw crayfish, Cherax quadricarinatus, was evaluated. Three replicate groups of 40 crayfish (mean initial weight ± SD, 23.0 ± 3.0 g) per diet treatment were stocked in 15,000 -L tanks, at 28 C. After 75 d of culture, there were significant differences (P < 0.001) in egg area (3.52-3.90 mm2), volume (34.0-39.3 mm3), weight (4.81-5.36 mg), and diameter (2.15-2.27 mm) in response to dietary lipids in the diet. Using the quadratic equation, the maximum responses of these parameters corresponded to lipid levels from 8.60-8.84%. There were no significant differences (P > 0.05) in survival (82.1-86.9%), final weight (41.0-43.7 g), number of spawning females (18.12-27.38%), and fecundity (9.07-10.31 eggs/g female). Additionally, there were no significant differences (P > 0.05) in egg mean protein (2306.87 ± 440.08 μg/egg), lipid (441.95 ± 83.23 μg/egg) and carbohydrate (74.81 ± 10.12 μg/egg) contents, and energy (13.49 ± 2.25 kcal/egg). The optimum overall response was obtained for dietary lipid content of 8.7%, which we recommend to optimize egg quality of this freshwater crayfish.
AB - The effect of three crude dietary lipid levels (4, 8, and 12%) on egg quality of the female redclaw crayfish, Cherax quadricarinatus, was evaluated. Three replicate groups of 40 crayfish (mean initial weight ± SD, 23.0 ± 3.0 g) per diet treatment were stocked in 15,000 -L tanks, at 28 C. After 75 d of culture, there were significant differences (P < 0.001) in egg area (3.52-3.90 mm2), volume (34.0-39.3 mm3), weight (4.81-5.36 mg), and diameter (2.15-2.27 mm) in response to dietary lipids in the diet. Using the quadratic equation, the maximum responses of these parameters corresponded to lipid levels from 8.60-8.84%. There were no significant differences (P > 0.05) in survival (82.1-86.9%), final weight (41.0-43.7 g), number of spawning females (18.12-27.38%), and fecundity (9.07-10.31 eggs/g female). Additionally, there were no significant differences (P > 0.05) in egg mean protein (2306.87 ± 440.08 μg/egg), lipid (441.95 ± 83.23 μg/egg) and carbohydrate (74.81 ± 10.12 μg/egg) contents, and energy (13.49 ± 2.25 kcal/egg). The optimum overall response was obtained for dietary lipid content of 8.7%, which we recommend to optimize egg quality of this freshwater crayfish.
UR - http://www.scopus.com/inward/record.url?scp=68349144479&partnerID=8YFLogxK
U2 - 10.1111/j.1749-7345.2009.00267.x
DO - 10.1111/j.1749-7345.2009.00267.x
M3 - Artículo
SN - 0893-8849
VL - 40
SP - 531
EP - 539
JO - Journal of the World Aquaculture Society
JF - Journal of the World Aquaculture Society
IS - 4
ER -