| Full text | |
| Author(s): |
Costa Starling, Renan Zappavigna
;
de Almeida, Fabiana Alves
;
Goncalves Viana, Marcus Vinicius
;
de Castilhos, Andre Michel
;
Talamini do Amarante, Alessandro Francisco
Total Authors: 5
|
| Document type: | Journal article |
| Source: | REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA; v. 28, n. 4, p. 9-pg., 2019-10-01. |
| Abstract | |
The aim of this study was to evaluate the effect of two nutritional statuses on the productive performance of Dorper lambs naturally infected with gastrointestinal nematodes. Thirty-two lambs, grazing together on the same pasture, were allocated into four experimental groups: (G1) infected-supplemented diet, (G2) control-supplemented diet, (G3) infected-basal diet, and (G4) control-basal diet. Control animals received suppressive treatment with monepantel every two weeks, while precautionary anthelmintic treatments were given to all lambs of the infected groups with packed cell volume (PCV) <23%. There was reduction in the PCV means of all groups, which was more pronounced in the infected lambs that also presented reduction in total plasma protein values in comparison with the controls. Weight gain was affected by diet and infection status (P < 0.05). Daily body weight gain was 0.170 kg in the G1, 0.205 kg in the G2, 0.085 kg in the G3, and 0.116 kg in the G4. The cold carcass weight was 4.1% and 13.7% higher in controls in comparison with infected lambs, respectively, in the supplemented and basal diets. The infected groups, despite receiving precautionary anthelmintic treatments to prevent deaths due to haemonchosis, presented reduction in the production parameters in comparison with the controls. (AU) | |
| FAPESP's process: | 15/25718-7 - Prophylaxis of sheep worms using integrated crop-livestock system (ICL) |
| Grantee: | Fabiana Alves de Almeida |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 15/14751-3 - The effect of the diet on the immune response and performance of lambs artificially infected by Haemonchus contortus and Trichostrongylus colubriformis |
| Grantee: | Alessandro Francisco Talamini Do Amarante |
| Support Opportunities: | Regular Research Grants |