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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Economic impact of gastrointestinal nematodes in Morada Nova sheep in Brazil

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Ana Carolina de Souza Chagas [1] ; Oscar Tupy [2] ; Isabella Barbosa dos Santos [3] ; Sérgio Novita Esteves [4]
Total Authors: 4
[1] Embrapa Pecuária Sudeste - Brasil
[2] Embrapa Pecuária Sudeste - Brasil
[3] Universidade Estadual Paulista. Faculdade de Ciências Agrárias e Veterinárias - Brasil
[4] Embrapa Pecuária Sudeste - Brasil
Total Affiliations: 4
Document type: Journal article
Source: Revista Brasileira de Parasitologia Veterinária; v. 31, n. 3 2022-08-19.

Abstract This study evaluated the economic impact of gastrointestinal nematode (GIN) infection in Morada Nova lambs under different parasite chemical control conditions. For this, 246 lambs, in the rainy and dry season, were randomized into groups according to their anthelmintic treatment with levamisole: control (CT: no treatment); routine treatment (RT: treated every 42 days); and targeted selective treatment (TST: treated according to the average daily weight gain, DWG). From 63 days of age (D63) to D210, the lambs were weighed and monitored for GIN infection parameters. Spending on anthelmintics in the production system was 1.3% of the total economic result. The economic result per animal (R$ 5.00 = US$ 1.00) was higher in the RT group, amounting to US$ 6.60 in the rainy and US$ 5.69 in the dry season, due to higher DWG. Thus, RT presented economic results 14.4% and 10.9% higher than CT, and 7.2% and 1.9% higher than TST, in the rainy and dry season, respectively. However, fast development of resistance made RT unfeasible. Here, the economic impact of GIN infection on a national scale is discussed, demonstrating its importance and the impossibility of profitable and sustainable sheep production without adequate control. (AU)

FAPESP's process: 19/02929-3 - Target selective treatment based on liveweight gain as nematode control strategy in Morada Nova lamb
Grantee:Ana Carolina de Souza Chagas
Support Opportunities: Regular Research Grants
FAPESP's process: 18/16070-1 - Study of the impact of gastrointestinal nematodes infection on the performance of Morada Nova Lambs for development of a targeted selective treatment
Grantee:Isabella Barbosa dos Santos
Support Opportunities: Scholarships in Brazil - Doctorate