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| Ponce-Marban, Donny; Hernandez, Juan; Gasca-Leyva, Eucario. |
| Tilapia culture in rural communities of the state of Yucatan, Mexico, has been increasing in recent decades. Polyculture of tilapia with other more commercially valuable species is an opportunity to substantially improve the economic yields of rural producers. The economic viability of implementing a Nile tilapia with Australian redclaw crayfish polyculture was analyzed using profitability indicators such as internal rate of return (IRR) and net present value of the investment (NPV). A bioeconomic model was developed to simulate three production densities (33/0, 33/20, tilapia and crayfish, respectively), accounting for investment recuperation in time horizons of 5, 10 and 15 years. The model includes a biological sub-model describing the growth of... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Economic Viability; Polyculture; Nile Tilapia; Australian Redclaw Crayfish; Yucatan; Mexico; Livestock Production/Industries; O13; Q22. |
| Ano: 2005 |
URL: http://purl.umn.edu/56080 |
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| Poot-Lope, Gaspar Roman; Gasca-Leyva, Eucario. |
| In Mexico, the culture of tilapia has developed in rural areas, where the main problem is low producer income. The state of Yucatan also experiences this situation, and scarcity of money needed to purchase inputs results in complementary feeding with chaya (Cnidoscolus chayamansa), whose leaves are edible for humans and animals. In this situation, CINVESTAV conducted experiments to determine the optimal level of substitution of balanced feed with ray chaya leaves. The test with 25% and 50% reduced balanced feed complemented with chaya (ad libitum) did not show significant differences (P>0.05) in growth compared to fishes fed with a complete ration of balanced feed (100% feed table). A bioeconomic model was developed, including a submodel of growth... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Bioeconomic model; Cost minimization; Tilapia; Livestock Production/Industries; O13; Q22. |
| Ano: 2005 |
URL: http://purl.umn.edu/55999 |
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