Channel catfish (Ictalurus punctatus) were stocked in earthen ponds at 11,000 and 14,000 fish/ha. Continual, nightly (from 00:00 to 06:00) and emergency aeration with vertical pump aerators were operated nightly (from 23:00 to 07:00) and compared to emergency aeration with vertical pumps. Fish were fed to satisfaction daily. Selected water quality variables were monitored.
Mean production in 1988 from the emergency aerated treatment (3,100 kg/ha) was significantly less (P < 0.05) than from continuous aeration (4,400 kg/ha) and nightly aeration (4,300 kg/ha) and nightly aeration (4,300 kg/ha). Feed efficiency (gain/feed input) under nightly aeration (0.82) was significantly better (P<0.05) than under emergency aeration (0.66). Production in 1989 was higher
(5,100•6,500 kg/ha) because greater feeding rates were attained, but there were no significant differences among treatments. In 1988, survival under nightly aeration (98%) was significantly better (P<0.05) than under emergency aeration (81%). Survival in 1989 was 92% to 98%, with no significant differences among treatments.
Member of
Contributors
Publisher
Society of Israeli Aquaculture and Marine Biotechnology
Date Issued
1991
Note
Language
Type
Genre
Form
Extent
14 p.
Subject (Topical)
Identifier
FA00007214
Additional Information
Channel catfish (Ictalurus punctatus) were stocked in earthen ponds at 11,000 and 14,000 fish/ha. Continual, nightly (from 00:00 to 06:00) and emergency aeration with vertical pump aerators were operated nightly (from 23:00 to 07:00) and compared to emergency aeration with vertical pumps. Fish were fed to satisfaction daily. Selected water quality variables were monitored.
Mean production in 1988 from the emergency aerated treatment (3,100 kg/ha) was significantly less (P < 0.05) than from continuous aeration (4,400 kg/ha) and nightly aeration (4,300 kg/ha) and nightly aeration (4,300 kg/ha). Feed efficiency (gain/feed input) under nightly aeration (0.82) was significantly better (P<0.05) than under emergency aeration (0.66). Production in 1989 was higher
(5,100•6,500 kg/ha) because greater feeding rates were attained, but there were no significant differences among treatments. In 1988, survival under nightly aeration (98%) was significantly better (P<0.05) than under emergency aeration (81%). Survival in 1989 was 92% to 98%, with no significant differences among treatments.
Mean production in 1988 from the emergency aerated treatment (3,100 kg/ha) was significantly less (P < 0.05) than from continuous aeration (4,400 kg/ha) and nightly aeration (4,300 kg/ha) and nightly aeration (4,300 kg/ha). Feed efficiency (gain/feed input) under nightly aeration (0.82) was significantly better (P<0.05) than under emergency aeration (0.66). Production in 1989 was higher
(5,100•6,500 kg/ha) because greater feeding rates were attained, but there were no significant differences among treatments. In 1988, survival under nightly aeration (98%) was significantly better (P<0.05) than under emergency aeration (81%). Survival in 1989 was 92% to 98%, with no significant differences among treatments.
Florida Atlantic University. Harbor Branch Oceanographic Institute contribution 860
This manuscript is an author
version with the final publication available and may be cited as: Thomforde, H. W., & Boyd, C. E.
(1991). Effects of aeration on water quality and channel catfish production. The Israeli Journal of
Aquaculture - Bamidgeh, 43(1), 3-26.
version with the final publication available and may be cited as: Thomforde, H. W., & Boyd, C. E.
(1991). Effects of aeration on water quality and channel catfish production. The Israeli Journal of
Aquaculture - Bamidgeh, 43(1), 3-26.
Date Backup
1991
Date Text
1991
Date Issued (EDTF)
1991
Extension
FAU
IID
FA00007214
Organizations
Attributed name: Harbor Branch Oceanographic Institute
Person Preferred Name
Thomforde, H. W.
Physical Description
14 p.
Title Plain
Effects of aeration on water quality and channel catfish production
Origin Information
1991
Society of Israeli Aquaculture and Marine Biotechnology
Israel
Place
Israel
Title
Effects of aeration on water quality and channel catfish production
Other Title Info
Effects of aeration on water quality and channel catfish production