Effect of densities and culture systems on growth, survival, yield, and economic return of freshwater prawn, Macrobrachium rosenbergii, farming in the rice field in the Mekong Delta, Vietnam

Lam My Lan, Jean Claude Micha, Duong Nhut Long, Pham Truong Yen

Résultats de recherche: Contribution à un journal/une revueArticle

Résumé

Postlarvae of Macrobrachium rosenbergii (de Man 1879) were stocked at 2, 4, and 6 postlarvae (PL)/m2 into rice fields under two culture systems, the integrated and the rotational prawn-rice system. Prawn was fed pellet feed twice daily. The growth of Macrobrachium rosenbergii decreased at higher stocking densities. Prawns in the rotational system grew faster than those in the integrated system. The yields ranged from 286±32 to 516±51, 412±17, to 584±41 kg/ha in the integrated and the rotational prawn-rice system, respectively. The yield at density of 2 PL/m2 was significantly lowest (P <0.05) and was highest in the treatment. with 6 PL/m2. However, at higher density, the investment cost significantly increased (P <0.05), while profit significantly decreased (P <0.05). At a density of 2 PL/m2, cost benefit ratio and profit was the highest (P <0.05). The integrated rice-prawn system gives lower profits than the rotational system.

langue originaleAnglais
Pages (de - à)43-62
Nombre de pages20
journalJournal of Applied Aquaculture
Volume18
Numéro de publication1
Les DOIs
étatPublié - 2006

Empreinte digitale

Macrobrachium
Macrobrachium rosenbergii
postlarvae
paddy field
Vietnam
paddies
shrimp
rice
farming systems
profits and margins
economics
stocking density
pelleted feeds
stocking rate
cost
profit
effect

Citer ceci

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title = "Effect of densities and culture systems on growth, survival, yield, and economic return of freshwater prawn, Macrobrachium rosenbergii, farming in the rice field in the Mekong Delta, Vietnam",
abstract = "Postlarvae of Macrobrachium rosenbergii (de Man 1879) were stocked at 2, 4, and 6 postlarvae (PL)/m2 into rice fields under two culture systems, the integrated and the rotational prawn-rice system. Prawn was fed pellet feed twice daily. The growth of Macrobrachium rosenbergii decreased at higher stocking densities. Prawns in the rotational system grew faster than those in the integrated system. The yields ranged from 286±32 to 516±51, 412±17, to 584±41 kg/ha in the integrated and the rotational prawn-rice system, respectively. The yield at density of 2 PL/m2 was significantly lowest (P <0.05) and was highest in the treatment. with 6 PL/m2. However, at higher density, the investment cost significantly increased (P <0.05), while profit significantly decreased (P <0.05). At a density of 2 PL/m2, cost benefit ratio and profit was the highest (P <0.05). The integrated rice-prawn system gives lower profits than the rotational system.",
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author = "Lan, {Lam My} and Micha, {Jean Claude} and Long, {Duong Nhut} and Yen, {Pham Truong}",
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Effect of densities and culture systems on growth, survival, yield, and economic return of freshwater prawn, Macrobrachium rosenbergii, farming in the rice field in the Mekong Delta, Vietnam. / Lan, Lam My; Micha, Jean Claude; Long, Duong Nhut; Yen, Pham Truong.

Dans: Journal of Applied Aquaculture, Vol 18, Numéro 1, 2006, p. 43-62.

Résultats de recherche: Contribution à un journal/une revueArticle

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T1 - Effect of densities and culture systems on growth, survival, yield, and economic return of freshwater prawn, Macrobrachium rosenbergii, farming in the rice field in the Mekong Delta, Vietnam

AU - Lan, Lam My

AU - Micha, Jean Claude

AU - Long, Duong Nhut

AU - Yen, Pham Truong

PY - 2006

Y1 - 2006

N2 - Postlarvae of Macrobrachium rosenbergii (de Man 1879) were stocked at 2, 4, and 6 postlarvae (PL)/m2 into rice fields under two culture systems, the integrated and the rotational prawn-rice system. Prawn was fed pellet feed twice daily. The growth of Macrobrachium rosenbergii decreased at higher stocking densities. Prawns in the rotational system grew faster than those in the integrated system. The yields ranged from 286±32 to 516±51, 412±17, to 584±41 kg/ha in the integrated and the rotational prawn-rice system, respectively. The yield at density of 2 PL/m2 was significantly lowest (P <0.05) and was highest in the treatment. with 6 PL/m2. However, at higher density, the investment cost significantly increased (P <0.05), while profit significantly decreased (P <0.05). At a density of 2 PL/m2, cost benefit ratio and profit was the highest (P <0.05). The integrated rice-prawn system gives lower profits than the rotational system.

AB - Postlarvae of Macrobrachium rosenbergii (de Man 1879) were stocked at 2, 4, and 6 postlarvae (PL)/m2 into rice fields under two culture systems, the integrated and the rotational prawn-rice system. Prawn was fed pellet feed twice daily. The growth of Macrobrachium rosenbergii decreased at higher stocking densities. Prawns in the rotational system grew faster than those in the integrated system. The yields ranged from 286±32 to 516±51, 412±17, to 584±41 kg/ha in the integrated and the rotational prawn-rice system, respectively. The yield at density of 2 PL/m2 was significantly lowest (P <0.05) and was highest in the treatment. with 6 PL/m2. However, at higher density, the investment cost significantly increased (P <0.05), while profit significantly decreased (P <0.05). At a density of 2 PL/m2, cost benefit ratio and profit was the highest (P <0.05). The integrated rice-prawn system gives lower profits than the rotational system.

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