Effect of microbial biofilm in the nursery phase of mrigal, Cirrhinus mrigala
The experiment was conducted for 35 days in nine cement tubs (1 x 1 x 1 m) having 15 cm sandy-loam soil base with three treatments in triplicate, viz., cow dung alone at the rate of 1 kg/tub (T sub(1)), cow dung at 1 kg/tub and feed at 10% body wt/d in two meals (T sub(2)), and cow dung at 1 kg and paddy straw at 200 g/tub (T sub(3)). Both manure and substrate were added on dry weight basis. All the tubs were stocked with 10 fry each mrigal (100,000/ha) of average weight of 0.09 g, seven days after the addition of manure and substrate. The total plate count of bacteria in water did not vary much between the treatments and the mean values were 5.13, 5.49 and 5.85 (CFU x 10 super(4)/ml) in T sub(1) T sub(2) and T sub(3) respectively. The number of phytoplankters and zooplankters in water differed significantly between the treatments. The average number of attached algae (no./cm³) and fish food organisms (no./cm³) recorded on the substrate were 145.28 and 70.67, respectively. The mean final weight of mrigal differed significantly (P < 0.05) between the treatments with T sub(3) registering the highest value of 6.93 g followed by T sub(2) (5.01 g) and T sub(1) (3.37 g). The specific growth rate and growth increment of fish also followed the same trend as that of weight recorded in the different treatments. Survival was higher in T sub(2) (83.33%), followed by T sub(3) (80.00%) and T sub(1) (76.67%). The study demonstrates that by the introduction of biodegradable substrates like paddy straw into the culture systems, significantly higher growth and survival can be obtained in the nursery rearing of mrigal.
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2006
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| Subjects: | Biology, microbial biofilm, nursery, Cirrhinus mrigala, |
| Online Access: | http://hdl.handle.net/1834/33321 |
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dig-aquadocs-1834-333212021-07-01T03:07:22Z Effect of microbial biofilm in the nursery phase of mrigal, Cirrhinus mrigala Mridula, R.M. Manissery, J.K. Rajesh, K.M. Keshavanath, P. Shankar, K.M. Nandeesha, M.C. Biology microbial biofilm nursery Cirrhinus mrigala The experiment was conducted for 35 days in nine cement tubs (1 x 1 x 1 m) having 15 cm sandy-loam soil base with three treatments in triplicate, viz., cow dung alone at the rate of 1 kg/tub (T sub(1)), cow dung at 1 kg/tub and feed at 10% body wt/d in two meals (T sub(2)), and cow dung at 1 kg and paddy straw at 200 g/tub (T sub(3)). Both manure and substrate were added on dry weight basis. All the tubs were stocked with 10 fry each mrigal (100,000/ha) of average weight of 0.09 g, seven days after the addition of manure and substrate. The total plate count of bacteria in water did not vary much between the treatments and the mean values were 5.13, 5.49 and 5.85 (CFU x 10 super(4)/ml) in T sub(1) T sub(2) and T sub(3) respectively. The number of phytoplankters and zooplankters in water differed significantly between the treatments. The average number of attached algae (no./cm³) and fish food organisms (no./cm³) recorded on the substrate were 145.28 and 70.67, respectively. The mean final weight of mrigal differed significantly (P < 0.05) between the treatments with T sub(3) registering the highest value of 6.93 g followed by T sub(2) (5.01 g) and T sub(1) (3.37 g). The specific growth rate and growth increment of fish also followed the same trend as that of weight recorded in the different treatments. Survival was higher in T sub(2) (83.33%), followed by T sub(3) (80.00%) and T sub(1) (76.67%). The study demonstrates that by the introduction of biodegradable substrates like paddy straw into the culture systems, significantly higher growth and survival can be obtained in the nursery rearing of mrigal. 2021-06-24T17:29:23Z 2021-06-24T17:29:23Z 2006 article http://hdl.handle.net/1834/33321 en application/pdf application/pdf 103-112 http://aquaticcommons.org/id/eprint/17882 12051 2015-09-21 06:55:36 17882 Indian Fisheries Association |
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Biology microbial biofilm nursery Cirrhinus mrigala Biology microbial biofilm nursery Cirrhinus mrigala |
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Biology microbial biofilm nursery Cirrhinus mrigala Biology microbial biofilm nursery Cirrhinus mrigala Mridula, R.M. Manissery, J.K. Rajesh, K.M. Keshavanath, P. Shankar, K.M. Nandeesha, M.C. Effect of microbial biofilm in the nursery phase of mrigal, Cirrhinus mrigala |
| description |
The experiment was conducted for 35 days in nine cement tubs (1 x 1 x 1 m) having 15 cm sandy-loam soil base with three treatments in triplicate, viz., cow dung alone at the rate of 1 kg/tub (T sub(1)), cow dung at 1 kg/tub and feed at 10% body wt/d in two meals (T sub(2)), and cow dung at 1 kg and paddy straw at 200 g/tub (T sub(3)). Both manure and substrate were added on dry weight basis. All the tubs were stocked with 10 fry each mrigal (100,000/ha) of average weight of 0.09 g, seven days after the addition of manure and substrate. The total plate count of bacteria in water did not vary much between the treatments and the mean values were 5.13, 5.49 and 5.85 (CFU x 10 super(4)/ml) in T sub(1) T sub(2) and T sub(3) respectively. The number of phytoplankters and zooplankters in water differed significantly between the treatments. The average number of attached algae (no./cm³) and fish food organisms (no./cm³) recorded on the substrate were 145.28 and 70.67, respectively. The mean final weight of mrigal differed significantly (P < 0.05) between the treatments with T sub(3) registering the highest value of 6.93 g followed by T sub(2) (5.01 g) and T sub(1) (3.37 g). The specific growth rate and growth increment of fish also followed the same trend as that of weight recorded in the different treatments. Survival was higher in T sub(2) (83.33%), followed by T sub(3) (80.00%) and T sub(1) (76.67%). The study demonstrates that by the introduction of biodegradable substrates like paddy straw into the culture systems, significantly higher growth and survival can be obtained in the nursery rearing of mrigal. |
| format |
article |
| topic_facet |
Biology microbial biofilm nursery Cirrhinus mrigala |
| author |
Mridula, R.M. Manissery, J.K. Rajesh, K.M. Keshavanath, P. Shankar, K.M. Nandeesha, M.C. |
| author_facet |
Mridula, R.M. Manissery, J.K. Rajesh, K.M. Keshavanath, P. Shankar, K.M. Nandeesha, M.C. |
| author_sort |
Mridula, R.M. |
| title |
Effect of microbial biofilm in the nursery phase of mrigal, Cirrhinus mrigala |
| title_short |
Effect of microbial biofilm in the nursery phase of mrigal, Cirrhinus mrigala |
| title_full |
Effect of microbial biofilm in the nursery phase of mrigal, Cirrhinus mrigala |
| title_fullStr |
Effect of microbial biofilm in the nursery phase of mrigal, Cirrhinus mrigala |
| title_full_unstemmed |
Effect of microbial biofilm in the nursery phase of mrigal, Cirrhinus mrigala |
| title_sort |
effect of microbial biofilm in the nursery phase of mrigal, cirrhinus mrigala |
| publishDate |
2006 |
| url |
http://hdl.handle.net/1834/33321 |
| work_keys_str_mv |
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