Levels of dietary zinc on weaning piglets: Performance, diarrhea incidence and E.coli isolation / Níveis de zinco na dieta de leitões recém-desmamados:Desempenho, incidência de diarréia, isolaento de E. coli e análise econômica
Maria Arantes, Vânia; Cristina Thomaz, Maria; Nascimento Kronka, Rodolfo; Braga Malheiros, Euclides; Mundim e Barros, Vinicius; Souza Pinto, Eduardo; Enrique Lemos Budiño, Fábio; Luís Fraga, Alessandro; dos Santos Ruiz, Urbano; Alcides Robles Huaynate, Rizal.
Bol. ind. anim. (Impr.)
; 62(3): 189-201, 2005.
Artículo
en Portugués
|
LILACS-Express
| ID: biblio-1466229
The present experiment was conducted to determine the effect of the addition of different levels of zinc (0, 1500, 3000 and 4500 ppm) in the diet of weaned pigs on performance, diarrhea incidence and importance, E. coli, enterohemorrhagic E. coli and P. mirabilis isolation and economical analysis. Sixty crossed weaned piglets with 21 days of age, were used, arranged in a randomized design, with 4 treatment, 5 replications. The periods (P) considered were P1, of the it weans (day zero) up to 14 days it after weaning; P2, from 15 to 42 days after weaning and Total (TP), of the day zero to the 42 days after weaning, for performance and economical analysis; week 1, week 2, and P1, for incidence and gravity of the diarrhea; collection of feces to the 0, 7 and 14 days after weaning for the microbiological isolation. The polinomial regression was used for the levels of Zn in the variables daily feed intake (DFI), daily weight gain (DWG) and feedgain ratio (FG). The addition of 1500 ppm of Zn in diet was enough to improve piglets DWG and FG. ZnO was not effective in controlling E. coli and enterohemorrhagic E. Coli in the 14 days after weaning.
Biblioteca responsable:
BR68.1
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