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Murarolli,VDA; Burbarelli,MFC; Polycarpo,GV; Ribeiro,PAP; Moro,MEG; Albuquerque,R. |
This study aimed to evaluate diets supplemented with prebiotic, probiotic and symbiotic as an alternative to antibiotics on the performance and immune response against the virus of Newcastle disease in broiler chickens. 1,400 one-day old male Cobb 500 chicks were raised until 42 days old in a completely randomized design with 2x2+1 factorial scheme with seven replications. The treatments were: diet without supplementation (base diet - BD), BD + prebiotic, BD + probiotic, BD + symbiotic (prebiotic + probiotic), and BD + antibiotic. The parameters evaluated were performance and antibody serum titers against Newcastle disease. No antibiotic effect was observed on performance. The symbiotic provided better results for weight gain and feed:gain ratio until 21... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alternative additives; Performance enhancers; Vaccine titerss. |
Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000300008 |
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Burbarelli,MFC; Merseguel,CEB; Ribeiro,PAP; Lelis,KD; Polycarpo,GV; Carão,ACP; Bordin,RA; Fernandes,AM; Souza,RLM; Moro,MEG; Albuquerque,R. |
ABSTRACT The objective of this study was to investigate the influence of two cleaning and disinfection programs on broiler performance and on the microbiological status of the facilities. This trial was an observational study of comparative character. Two experiments were conducted, with 960 birds each. Both experiments were carried out in a positive-pressure broiler house. Broilers were distributed in pens equipped with a bell drinker and a tube feeder each. In the first experiment, new wood shavings were used as litter material, and in the second, reused wood shavings were used. Two treatments with16 replicates of 30 birds each were evaluated. The regular treatment consisted of dry and wet organic matter removal, followed by washing. The European... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Poultry; Health; Biosecurity; Disinfectants. |
Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000400575 |
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