Commercially important traits of blue and channel catfish as related to second summer, winter, and third summer growth

Grant, John C.; Robinette, H. Randall

doi:10.1016/0044-8486(92)90159-i

Cited by 14 publications

(22 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Grant and Robinette (1992) reported similar high survival rates for market-sized blue catfish and channel catfish (98% and 99%, respectively) that were fed over the winter. Kim and Lovell (1995) and Nanninga et al (2011) also reported high survival (>90%) and no difference in survival between winter-fed and unfed channel catfish.…”

Section: Resultssupporting

confidence: 60%

“…However, the poor growth of winter-fed blue catfish suggests that those fish would have had poorer FCRs than fed channel catfish or hybrids. Grant and Robinette (1992) reported FCRs of 11.59 and 5.89 for winter-fed blue catfish and channel catfish, respectively, supporting the idea that blue catfish will have poorer FCRs than channel catfish during winter feeding. Therefore, I recommend either (1) withholding feed from blue catfish during winter or (2) applying a lower winter feeding rate for blue catfish than for channel catfish or hybrid catfish.…”

Section: Resultssupporting

confidence: 57%

“…Females had higher carcass yields than males, but a significant genetic group × gender interaction was present at both the start and end of the study because the effect of gender on carcass yield was greater for channel catfish than for blue catfish or hybrid catfish. Higher carcass yields for hybrids and blue catfish in comparison with channel catfish have been reported in other studies (Grant and Robinette 1992;Argue et al 2003;Bosworth et al 2004;Li et al 2004;Jiang et al 2008). The smaller head size in hybrids and blue catfish relative to channel catfish appears to be the main factor influencing the higher carcass yields for hybrids and blue catfish in comparison with channel catfish.…”

Section: Resultsmentioning

confidence: 49%

See 2 more Smart Citations

Effects of Winter Feeding on Growth, Body Composition, and Processing Traits of Co‐Cultured Blue Catfish, Channel Catfish, and Channel Catfish×Blue Catfish Hybrids

Bosworth

2012

N American J Aquac

View full text Add to dashboard Cite

The effects of winter feeding on growth, body composition, and processing yield were compared for co‐cultured blue catfish Ictalurus furcatus, channel catfish I. punctatus, and channel catfish×blue catfish hybrids. Fish (∼0.4–0.7 kg) from each genetic group were stocked communally at 5,625 fish/ha in ten 0.04‐ha ponds during mid‐November. Fish in five ponds were fed at 2% of initial body weight twice per week; fish in the other five ponds were not fed. The study was terminated after 14 weeks, and fish were weighed and processed. Analyzed traits were weight change (%), survival, and yields (%) of carcass, shank fillet, nugget, head, viscera, skin, intraperitoneal fat, liver, and ovary. Among fed fish, hybrids gained the most weight, channel catfish had intermediate weight gain, and blue catfish gained the least weight. Unfed blue catfish lost more weight than unfed channel catfish and hybrids. Survival was not different among genetic groups or between feeding regimes. Interactions among main effects for processing and body composition traits made generalizations difficult, but carcass yield was consistently higher for blue catfish and hybrids than for channel catfish, higher for females than for males, and higher for fed fish than for unfed fish. Shank fillet yield was higher for hybrids than for blue catfish and channel catfish, higher for females than for males, and higher for fed fish than for unfed fish. Nugget yield was higher for blue catfish than for channel catfish and hybrids and was higher for fed fish than for unfed fish. Blue catfish and hybrids had higher intraperitoneal fat yield and lower liver and ovary yield than channel catfish. Fed fish had higher intraperitoneal fat and liver yield than unfed fish. Winter feeding improved growth and fillet yield in all groups, but the benefits of winter feeding were lower for blue catfish than for channel catfish and hybrid catfish.

show abstract

Section: Resultssupporting

confidence: 60%

Section: Resultssupporting

confidence: 57%

Section: Resultsmentioning

confidence: 49%

See 1 more Smart Citation

Effects of Winter Feeding on Growth, Body Composition, and Processing Traits of Co‐Cultured Blue Catfish, Channel Catfish, and Channel Catfish×Blue Catfish Hybrids

Bosworth

2012

N American J Aquac

View full text Add to dashboard Cite

show abstract

“…1992El-Ibiary and Joyce 1978Wcb5ter et al 1993Dunharn et al 1985Li and Lovell 1992Li and Lovell 1992Wolters et al 199 1 Clement and Lovell 1994Grant and Kobinette 1992Manthey er al. 1988Grant and Robinette 1992Li and Lovell 1992Wehstcr et al 1993Dunham et al 1983Manthcy et al 1988Hoffman et al 199338 Manthey et al 198834-43 Proteau 1993 Phenotypic variability in body conformation of catfish has been observed and thought to be related to genetic origin (Dunham et al, 1983, Grober andVan der Bank, 1994). There are large differences between strains of Channel catfish in dress out percentage .…”

Section: Guyane Siluridsmentioning

confidence: 99%

“…One alternative is to breed another species with high dress out pcrcentages such as blue catfish (Grant and Robinette, 1992), white catfish or their hybrids . In these different populations the genetic variability in dress out percentage at harvest could be predicted partially by the variability in somc early body traits (head width and depth and caudal width) .…”

Section: Guyane Siluridsmentioning

confidence: 99%