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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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| Elbakidze, Levan. |
| One of the options to prepare for a potential outbreak of an infectious livestock disease is to initiate an animal tracking system, which would provide information on animal movements and facilitate disease management. This study examines the benefits of implementing an animal tracking system in the context of a simulated cattle disease outbreak with and without animal tracking. Estimates are provided for some of the losses that would be avoided with an animal tracking system if an infectious animal disease were introduced. The results show that the economic efficiency of an animal tracking system depends on such factors as inter-herd contact rates, effectiveness of animal disease response actions, and the extent to which an animal tracking system... |
| Tipo: Journal Article |
Palavras-chave: Animal tracing; Cost minimization; Infectious disease spread mitigation; Livestock Production/Industries. |
| Ano: 2007 |
URL: http://purl.umn.edu/8597 |
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| Elbakidze, Levan. |
| This study presents a conceptual model for the analysis of avian influenza mitigation options within the small poultry farm sector (backyard flocks). The proposed model incorporates epidemiological susceptible-infected-recovered (SIR) methodology into an economic cost-minimization framework. The model is used to investigate the implications and interdependencies of mitigation options that influence inter-flock contact rates of asymptomatic and symptomatic flocks, and reduce the duration of symptomatic and asymptomatic periods. The results indicates that for shorter asymptomatic periods the efforts to control inter-flock contract rates should concentrate on symptomatic flocks, while for longer asymptomatic periods the control of inter-flock contacts should... |
| Tipo: Journal Article |
Palavras-chave: Asymptomatic and symptomatic periods; Avian influenza; Contact rates; Cost minimization; Livestock Production/Industries. |
| Ano: 2008 |
URL: http://purl.umn.edu/42463 |
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