Feeding regimen, dietary vitamin E, and genotype influences on immunological and production traits of broilers

Journal of Applied Poultry Research

Volumn 9, Issue 2, 2000, Pages 269-278

  Siegel, P B ^a   Larsen, C T ^a   Emmerson, D A ^a   Geraert, Pierre Andre ^b   Picard, Michel ^c  

^a VIRGINIA POLYTECHNIC INSTITUTE AND STATE UNIVERSITY   (United States)

^b SANOFI   (France)

^c STATION DE RECHERCHES AVICOLES   (France)

Author keywords

Broilers; Feed restriction; Growth; Health traits; Vitamin E

Indexed keywords

AVES; ESCHERICHIA COLI; OVIS ARIES;

EID: 0034375191     PISSN: 10566171     EISSN: None     Source Type: Journal    
DOI: 10.1093/japr/9.2.269     Document Type: Article

References (29)

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16. Chemical analysis of vitamin E in IU/kg for low, medium, and high levels were 11, 100, and 300 for the starter control diet, and 12, 120, and 300 for both the 50 and 20% dilute diets, respectively.
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19. -4 E. coli (serotype 01:K1 incubated for 24 hr in tryptose broth) into the posterior thoracic air sac.
20. Scores for pericardial and air sac lesions were: 1-none, 2-mild air sac, 3-moderate air sac, 4-mild to moderate heart, 5-extensive heart, 6-death between time of challenge and scoring for lesions.
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22. Bilateral differences of left minus right (L-R) for each trait were tested for fluctuating asymmetry (FA), defined as mean zero with normal distribution; directional asymmetry (DA), defined as mean not zero with normal distribution; and antisymmetry (AS), defined as mean zero with a distribution that was not normal. Each signed (+ or -) bilateral asymmetry (L - R) was tested for normality with mean zero by the Shapiro-Wilk statistic W and one-sample t-test. Relative asymmetries (L-R/[(L + R)/2]) × 100 and feed efficiencies were transformed to arc sine square roots prior to statistical analysis. Organ weights were analyzed relative to body weight ([organ weight/body weight] × 100) with the latter transformed to arc sin square roots prior to statistical analysis. Body weights were transformed to common logarithms prior to statistical analysis. All traits were analyzed by ANOVA except mortality, which was analyzed by Chi-square.
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