Measuring the costs of African animal trypanosomosis, the potential benefits of control and returns to research

Kristjanson, Patricia M.; Swallow, Brent; Rowlands, G.J.; Kruska, R.L.; Leeuw, P.N. de

doi:10.1016/s0308-521x(98)00086-9

Cited by 275 publications

(205 citation statements)

References 15 publications

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“…Given that the value of such special traits is known, as is the case for e.g. trypanotolerance [12] the suggested approach can be used to better assess the economic trade-off between conserving (neutral) diversity and conserving special traits of known value. Figure 3 shows that the lower the total funds were the smaller was the number of breeds for which conservation schemes were established.…”

Section: Conserved Diversity and Special Traitsmentioning

confidence: 99%

Optimum allocation of conservation funds and choice of conservation programs for a set of African cattle breeds

Reist-Marti¹,

Abdulai

Simianer

2006

Genet. Sel. Evol.

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-Although funds for livestock conservation are limited there is little known about the optimal allocation of conservation funds. A new algorithm was used to allocate Mio US$ 1, 2, 3, 5 or unlimited funds, discounted over 50 years, on 23 African cattle breeds conserved with four different possible conservation programs. Additionally, Mio US$ 1 was preferably allocated to breeds with special traits. The conceptional in situ conservation programs strongly involve breeders and give them part of the responsibility for the conservation of the breed. Therefore, the pure in situ conservation was more efficient than cryoconservation or combined in situ and cryoconservation. The average annual discounted conservation cost for a breed can be as low as US$ 1000 to US$ 4400 depending on the design of the conservation program and the economic situation of the country of conservation. The choice of the breeds and the optimal conservation program and the amount of money allocated to each breed depend on many factors such as the amount of funds available, the conservation potential of each breed, the effects of the conservation program as well as its cost. With Mio US$ 1, 64% of the present diversity could be maintained over 50 years, which is 13% more than would be maintained if no conservation measures were implemented. Special traits could be conserved with a rather small amount of the total funds. Diversity can not be conserved completely, not even with unlimited funds. A maximum of 92% of the present diversity could be conserved with Mio US$ 10, leaving 8% of the diversity to unpredictable happenings. The suggested algorithm proved to be useful for optimal allocation of conservation funds. It allocated the funds optimally among breeds by identifying the most suited conservation program for each breed, also accounting for differences in currency exchange rates between the different countries.optimal allocation / conservation program / African cattle / conservation funds / choice of program

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Section: Conserved Diversity and Special Traitsmentioning

confidence: 99%

Optimum allocation of conservation funds and choice of conservation programs for a set of African cattle breeds

Reist-Marti¹,

Abdulai

Simianer

2006

Genet. Sel. Evol.

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“…Tsetse transmitted African typanosomosis is found between latitude 14˚N and 29˚S covering across over 37 countries in Africa [3]. It is estimated that 60 million people and 48 million cattle are at risk of contracting African trypanosomiases [4].…”

Section: Introductionmentioning

confidence: 99%

Bovine trypanosomosis: A threat to cattle production in Chena district, southwest Ethiopia

Alemayehu¹,

Bogale²,

Fentahun³

et al. 2012

OJAS

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A cross-sectional study to determine the prevalence of bovine trypanosomosis was carried out in Chena district, Kefa zone, southwest Ethiopia from September 2010 to January 2011. Blood samples were collected from 391 randomly selected local (zebu) breed cattle in three representative peasant associations (PAs). The buffy coat and Giemsa stained thin blood films examination techniques were used for parasite detection and identification. The packed cell volume (PCV) estimation was also conducted. From a total of 391 cattle, 6.9% (n = 27) of the animals were found positive for trypanosome infection. The trypanosome species observed across the study animals were T. congolense (4.89%), T. vivax (1.54%), and T. b. brucei (0.51%) as single infections. The infection rate of T. congolense and T. b. brucei varied significantly (P < 0.05). The statistical analysis revealed that no significant difference (P > 0.05) in infection rate was found between male (7.79%) and female (5.62%) animals. The prevalence was 2.24% and 8.29% in young and adult cattle, respectively with significant difference (P < 0.05) between them. The prevalence rate in good, medium and poor body conditioned animals were 7.28%, 0.78% and 13.39%, respectively with a statistical significant difference (P < 0.05) among them. The mean PCV of the infected animals (17.56%) appeared significantly (P < 0.05) lower than the non-infected (25.4%). Even if, the present study indicated a low prevalence of bovine trypanosomosis in the study areas, its impact on production and potential transmission to others should not be neglected.

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“…Livestock diseases, especially the African animal trypanosomosis (AAT), are one of the major threats to these mostly poor households. The costs of AAT are estimated at US$1.3 billion annually, due to forgone milk and meat production (Kristjanson et al 1999). In areas with high AAT prevalence pastoralist households have to face a reduction in food production by 25% (Agyemang et al 1991).…”

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confidence: 99%

Simultaneous Estimation of Risk and Time Preferences among Small‐scale Cattle Farmers in West Africa

Liebenehm¹,

Waibel²

2014

American J Agri Economics

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Standard-Nutzungsbedingungen:Die Dokumente auf EconStor dürfen zu eigenen wissenschaftlichen Zwecken und zum Privatgebrauch gespeichert und kopiert werden.Sie dürfen die Dokumente nicht für öffentliche oder kommerzielle Zwecke vervielfältigen, öffentlich ausstellen, öffentlich zugänglich machen, vertreiben oder anderweitig nutzen.Sofern die Verfasser die Dokumente unter Open-Content-Lizenzen (insbesondere CC-Lizenzen) zur Verfügung gestellt haben sollten, gelten abweichend von diesen Nutzungsbedingungen die in der dort genannten Lizenz gewährten Nutzungsrechte. Terms of use: Documents in EconStor may AbstractThis study investigates risk and time preferences of small-holder cattle farmers in West Africa. We apply a discounted utility model and jointly estimate a prospect theory-based utility function and a quasi-hyperbolic discounting function using a maximum likelihood method. Results show that West African farmers are less lossaverse and are more patient than suggested by comparable studies in Asian developing countries. The main factors influencing farmers' risk and time preferences are cattle herd size and net revenue from sales of cattle products.

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Measuring the costs of African animal trypanosomosis, the potential benefits of control and returns to research

Cited by 275 publications

References 15 publications

Optimum allocation of conservation funds and choice of conservation programs for a set of African cattle breeds

Optimum allocation of conservation funds and choice of conservation programs for a set of African cattle breeds

Bovine trypanosomosis: A threat to cattle production in Chena district, southwest Ethiopia

Simultaneous Estimation of Risk and Time Preferences among Small‐scale Cattle Farmers in West Africa

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