2006
DOI: 10.1590/s1516-635x2006000200005
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Abstract: The humoral immune response of broilers fed diets supplemented with Zinc (Zn) (0, 40, and 400mg/kg) and vitamin E (0, 12, and 120mg/ kg), separately or combined, was evaluated. A completely randomized design was used according to a 3x3 factorial arrangement, with nine treatments and four repetitions per treatment. Sexed birds (n=1440) were distributed in 36 boxes with 40 chicks each and reared until 41 days of age. Vaccination against Newcastle Disease (ND) was performed when birds were 14 days old. ELISA and … Show more

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Cited by 10 publications
(5 citation statements)
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“…(1992) and Kidd, (2003). Additional zinc in diet of broiler has improved enhanced antibody (Cardoso et. al.…”
Section: Introductionmentioning
confidence: 99%
“…(1992) and Kidd, (2003). Additional zinc in diet of broiler has improved enhanced antibody (Cardoso et. al.…”
Section: Introductionmentioning
confidence: 99%
“…Zinc plays a role in the development of the immune system of the broiler embryo [ 13 , 14 ]. In a large number of studies, additional zinc used in the diet of broilers has improved antibody production [ 15 ]. Zinc is crucial for normal development and function of cells mediating non-specific immunity such as neutrophils and natural killer cells [ 16 ].…”
Section: Introductionmentioning
confidence: 99%
“…Although serum sampling from 1-day-old chicks applied here in both broiler types, was at the minimum rate of 12–18 chicks per flock (the optimal sample size is 23 samples/flock) ( BioChek, 2012 ), but ELISA mean titers obtained here occurred within the reproducible and predictable ELISA titers of 1-day-old chicks (5,000–10,000), CV under 40% and VI less than 2,000 ( BioChek, 2012 ; Cobb-Vantres, 2013). However, ELISA titer for NDs and other respiratory viral agents can be differentiated as a vaccination response or probable infection response by measuring the relationship between mean titer and its uniformity expressed by VI ( Cardoso et al , 2006 ).…”
Section: Discussionmentioning
confidence: 99%