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Add To Calendar 24/02/2016 11:15:0024/02/2016 11:35:00America/ChicagoAquaculture 2016COMPARISON OF GROWTH RATE AMONG CHANNEL CATFISH I. punctatus ♀ × BLUE CATFISH I. furcatus HYBRID, CHANNEL CATFISH, AND TRANSGENIC CHANNEL CATFISH BY cDNA GROWTH HORMONE (GH) CHANNEL CATFISH   Vendome BThe World Aquaculture Societyjohnc@was.orgfalseanrl65yqlzh3g1q0dme13067DD/MM/YYYY

COMPARISON OF GROWTH RATE AMONG CHANNEL CATFISH I. punctatus ♀ × BLUE CATFISH I. furcatus HYBRID, CHANNEL CATFISH, AND TRANSGENIC CHANNEL CATFISH BY cDNA GROWTH HORMONE (GH) CHANNEL CATFISH  

Nermeen Y. Abass*, and Rex A. Dunham
 
School of Fisheries, Aquaculture and Aquatic Sciences, Auburn University, AL 36849, USA.
Department of Agricultural Botany, Faculty of Agriculture Saba-Basha, Alexandria University, Egypt.
nyy0001@auburn.edu  

Channel catfish, Ictalurus punctatus, is the most important catfish species raised in the US. The hybrid resulting from the mating of ♀ channel catfish × ♂ blue catfish, I. furcatus, is superior to channel catfish because of its faster growth, better feed conversion, tolerance of low oxygen, and increased resistance to many diseases.

 

This study was conducted in the Catfish Genetics Research Unit, School of Fisheries, Aquaculture and Aquatic Sciences, Auburn University, AL, USA to compare the growth rate among channel catfish ♀ × blue catfish ♂ hybrid, channel catfish, and transgenic channel catfish by cDNA growth hormone (GH) channel catfish, driven by the antifreeze protein promoter (AFP).

 

Hybrid catfish, channel catfish, and transgenic channel catfish fry with the same mean initial weight were stocked into a single trough. Fish were fed once or twice daily to apparent satiation. Growth rate was evaluated at 18 weeks. Mean body weight of hybrid catfish were slightly larger (14-65%) than channel catfish however, transgenic channel catfish were larger (10-57%) than hybrid and larger (79-82%) than their controls (Figure 1). Mean body length of hybrid catfish were slightly larger (7-10%) than channel catfish however, transgenic channel catfish were larger (15%) than hybrid and larger (8-23%) than their controls (Figure 2).  

 

 




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