TY - JOUR
T1 - Stocking Density for Nursery Production of Redclaw Crayfish, Cherax quadricarinatus, in a Recirculating System
AU - García-Ulloa, G. M.
AU - Pérez-Moreno, M. R.
AU - Rodríguez-González, D.
AU - Gallo-García, M. C.
AU - Ponce-Palafox, J. T.
AU - Rodríguez-González, H.
AU - Góngora-Gómez, A. M.
PY - 2012/1
Y1 - 2012/1
N2 - Redclaw crayfish, Cherax quadricarinatus, early juveniles were reared at different stocking densities in a closed recirculation system using 12-L plastic containers as rearing tanks. Initial stocking densities were 1.0, 1.5, 2.0, 2.5, and 3.0 per liter (66, 89, 111, 133, and 156 crayfish/m 2, respectively). Rearing period was 42 days. Each density was tested with five replicates. Shelter (0.112 m 2) was added to double the surface area of rearing tanks. Animals were fed ad libitum twice a day with a commercial diet containing 35% crude protein. There were no significant differences (P < 0.05) in length and specific growth rate (SGR) among stocking densities. Final weight and daily weight gain, however, were significantly higher at the density of 66 per m 2 (1.0 per liter). Total biomass at harvest increased with density. Survival was affected by stocking density from day 28 onward, decreasing with density from 62.7 ± 7.6% obtained at 66 crayfish/m 2 to 44.85 ± 8.18% at 156 crayfish/m 2.
AB - Redclaw crayfish, Cherax quadricarinatus, early juveniles were reared at different stocking densities in a closed recirculation system using 12-L plastic containers as rearing tanks. Initial stocking densities were 1.0, 1.5, 2.0, 2.5, and 3.0 per liter (66, 89, 111, 133, and 156 crayfish/m 2, respectively). Rearing period was 42 days. Each density was tested with five replicates. Shelter (0.112 m 2) was added to double the surface area of rearing tanks. Animals were fed ad libitum twice a day with a commercial diet containing 35% crude protein. There were no significant differences (P < 0.05) in length and specific growth rate (SGR) among stocking densities. Final weight and daily weight gain, however, were significantly higher at the density of 66 per m 2 (1.0 per liter). Total biomass at harvest increased with density. Survival was affected by stocking density from day 28 onward, decreasing with density from 62.7 ± 7.6% obtained at 66 crayfish/m 2 to 44.85 ± 8.18% at 156 crayfish/m 2.
KW - Cherax quadricarinatus
KW - Density
KW - juvenile
KW - seed production
UR - http://www.scopus.com/inward/record.url?scp=84858610838&partnerID=8YFLogxK
U2 - 10.1080/10454438.2012.650599
DO - 10.1080/10454438.2012.650599
M3 - Artículo
SN - 1045-4438
VL - 24
SP - 8
EP - 15
JO - Journal of Applied Aquaculture
JF - Journal of Applied Aquaculture
IS - 1
ER -