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

Performance of lambs under four levels of dietary supplementation and artificially mix-infected with Haemonchus contortus and Trichostrongylus colubriformis

Full text
Nadino Carvalho ; José Henrique das Neves ; Caio Santos Pennacchi ; Andre Michel de Castilhos ; Alessandro Francisco Talamini do Amarante
Total Authors: 5
Document type: Journal article
Source: Revista Brasileira de Parasitologia Veterinária; v. 30, n. 1, p. -, 2021.
Web of Science Citations: 0

Abstract The effect of four diets on the performance of Dorper lambs that were artificially mix-infected with 1000 infective larvae (L3) of Haemonchus contortus and 1000 L3 of Trichostrongylus colubriformis every three days for 12 weeks was evaluated. For each diet, one infected group (n = 7) and one control group (n = 4) were set up. The four diets contained the following proportions of hay (H) and concentrate (C): Diet 1 - 100%H; Diet 2 - 75%H:25%C; Diet 3 - 50%H:50%C; Diet 4 - 25%H:75. All the infected groups showed decreases in mean packed cell volume (PCV) and total plasma protein, especially the Diet 1-infected, which was also the group with the highest fecal egg count. The diets and infection had significant effects (P < 0.05) on daily body weight gain (DBWG), cold carcass weight and daily food consumption. The control and infected groups had mean DBWG (in kg), respectively, of 0.048 and 0.025 with Diet 1; 0.082 and 0.067 with Diet 2; 0.188 and 0.189 with Diet 3; and 0.303 and 0.221 with Diet 4. In conclusion, the infection affected the productive performance regardless of the diet; however, with increased metabolizable protein and energy, the risk of occurrence of anemia and hypoproteinemia diminished. (AU)

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 type: Regular Research Grants
FAPESP's process: 14/02961-0 - Effect of anthelmintic treatments on the performance of Nellore, Simmental and cross-breed Nellore X Simmental young cattle
Grantee:José Henrique das Neves
Support type: Scholarships in Brazil - Doctorate