Mud Crab Fattening in Ponds

Triño, Avelino T.; Rodriguez, Eduard M.

doi:10.33997/j.afs.2001.14.2.011

Cited by 4 publications

(12 citation statements)

References 4 publications

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“…Amongst mud crabs, males grow significantly heavier than females, while "roed-up" females achieve a market premium (Trino, Rodriguez, 2001). Monosex culture also apparently alleviates cannibalism when fattening "lean" male and female Scylla serrata (Cholik, Hanafi, 1992;Trino, Rodriguez, 2001). This finding deserves closer attention as it apparently contradicts the outcome expected from normal male "mate guarding" behaviour-crucially, the survival of each sex in the mixed-sex treatment was not reported.…”

Section: Growout and Feedingmentioning

confidence: 97%

“…For example, taking low-value "lean" market-sized mud crab and feeding it for a short period to harden the shell and restore the flesh content (Dat, 1999). But taken more loosely, "fattening" also encompasses other practices such as maturation of females for sale, as well as a kind of proto-aquaculture-the growth of sub-commercial sized mud crabs through a single moult to improve their marketability (Trino, Rodriguez, 2001). As such, fattening practices can vary in their intensity, from labour intensive housing and maintenance of crabs in baskets or enclosures through to pond practices similar to longer term pond culture, (Khatun, Kamal, Yi, 2009;Shelley, 2008).…”

Section: Crab Fatteningmentioning

confidence: 99%

Section: Growout and Feedingmentioning

confidence: 99%

“…Regular harvesting and grading of crabs is out of the question. Partial harvesting is a simple "high-end" approach to grading, targeting "shooters" as they moult through to harvest size (Trino, Rodriguez, 2001). This regular "fishing mortality" has the double advantage of removing dominant individuals and steadily reduces the population density.…”

Section: Addressing Aggression and Cannibalismmentioning

confidence: 99%

“…Understanding the social behaviour of crabs in ponds is probably the key to mitigating cannibalism. What we know about the role of body size, sex or moult stage (Marshall, Warburton, Paterson, Mann, 2005;Trino, Rodriguez, 2001), must be weighed against the recognition that observations in clear water laboratory conditions are unusual-vision can play no role in the real night-time encounters between crabs in the depths of a turbid pond.…”

Section: Addressing Aggression and Cannibalismmentioning

confidence: 99%

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Mud Crab Aquaculture

Paterson¹

2011

Recent Advances and New Species in Aquaculture

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Section: Growout and Feedingmentioning

confidence: 97%

Section: Crab Fatteningmentioning

confidence: 99%

Section: Growout and Feedingmentioning

confidence: 99%

Section: Addressing Aggression and Cannibalismmentioning

confidence: 99%

Section: Addressing Aggression and Cannibalismmentioning

confidence: 99%

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Mud Crab Aquaculture

Paterson¹

2011

Recent Advances and New Species in Aquaculture

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Efficacy of different wet feeds on the growth performance of mud crab Scylla serrata during fattening in cages

2023

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Mud crab culture/ fattening is a lucrative business with high profit margin since they have high economic and export value. Compared to shrimp culture, crab fattening has many advantages such as short production cycle, high tolerance to water quality, rapid growth rates in captivity etc. Currently there is a non‐availability of cheap commercial feed for crabs so that raw feeds such as low value fishes have been used for rearing mud crabs. The current study is done to determine the growth performance of Scylla serrata (Forskal, 1775) fed with different processed wet feeds. The crabs weighing 250‐300g were stocked in individual cages and experiment is conducted with three different feed treatments including processed chicken intestine, processed shrimp head waste, oyster meat and control feed is processed small sized low value fish. Of all the feeds, mud crabs which were fed with chicken intestine showed better performance followed by oyster meat, shrimp head waste and low value fish. The present study concludes that fattening mud crabs with chicken intestine as feed showed better growth and economic performance.

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Comparisons of growth and economic performance among monosex and mixed-sex culture of red mud crab (Scylla olivaceaHerbst, 1796) in bamboo pens in the tidal flats of mangrove forests, Bangladesh

Khatun

Kamal

Ikejima

et al. 2009

Aquaculture Research

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An experiment was conducted in a randomized block design to compare growth and economic performance between monosex and mixed-sex culture of red mud crab (Scylla olivacea Herbst, 1796) fed with trash ¢sh at 5^10% body weight per day in the mangrove tidal £at at Burigoaliny Union of Satkhira District, Bangladesh. The experiment had three treatments in triplicate each: (a) all-male culture, (b) all-female culture and (c) mixed-sex culture. Crabs of 80^120 g in size were stocked at a density of 0.5 crab m À 2 and cultured for 100 days. Speci¢c growth rates (SGRs) by weight and internal carapace width (ICW) in the all-male culture were signi¢cantly higher than those in the all-female culture (Po0.05), while SGRs in the mixed-sex culture showed no signi¢cant di¡erences from those in the all-male and all-female culture (P40.05). No sig-ni¢cant di¡erences in ¢nal mean body weight, ICW, daily weight gain, survival rate, gross and net yields were found among all the treatments (P40.05). The area of high water level with mangroves gave signi¢cantly better results in terms of feed conversion ratio, survival rate, gross and net yields than the area of low water level (P40.05). The experiment suggests that the all-female culture in the area of high water level with mangroves could be suitable in developing commercial pen culture of red mud crabs in Bangladesh.Mean values with di¡erent superscript letters in the same row were signi¢cantly di¡erent (Po0.05).Aquaculture Research, 2009, 40, 473^485 Growth and economic performance of Scylla olivacea Mst. M. Khatun et al. r 2008 The Authors Journal Compilation r 2008 Blackwell Publishing Ltd, Aquaculture Research, 40, 473^485 Ã Depend on size and sex: F 1 (female) 200 g^5 USD kg À 1 , D2 (egg bearing female) 120 g^1.14 USD kg À 1 , SM (small male) 200 g^0.86 USD kg À 1 , M (male) 250 g^1.43 USD kg À 1 , L (large male)2 USD kg À 1 . Mean values with di¡erent superscript letters in the same row were signi¢cantly di¡erent (Po0.05). Aquaculture Research, 2009, 40, 473^485 Growth and economic performance of Scylla olivacea Mst. M. Khatun et al.

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Mud Crab Fattening in Ponds

Cited by 4 publications

References 4 publications

Mud Crab Aquaculture

Mud Crab Aquaculture

Efficacy of different wet feeds on the growth performance of mud crab Scylla serrata during fattening in cages

Comparisons of growth and economic performance among monosex and mixed-sex culture of red mud crab (Scylla olivaceaHerbst, 1796) in bamboo pens in the tidal flats of mangrove forests, Bangladesh

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