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Archivos de Zootecnia
versão On-line ISSN 1885-4494versão impressa ISSN 0004-0592
Resumo
GONCALVES, F.M. et al. Antibiotic administration in laying hens during the beak trimming process. Arch. zootec. [online]. 2010, vol.59, n.226, pp.295-298. ISSN 1885-4494.
Debeaking is widely used in layer operations to reduce cannibalism and waste of feed. This study aimed to investigate the use of antibiotics in water during the period of debeaking. A total of 2384 birds were debeaked at 7 days of age and divided into two groups. The T1: control and the T2: antibiotic-administered group. Feed intake, average of body weight, weight gain and feed conversion were evaluated. The results indicated that adding antibiotic in the water during the debeaking period has no effect on performance of pullets.
Palavras-chave : Sulfadiazin+trimetoprim; Weight gain average; Feed intake; Contamination; Animal welfare.