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Probiotics for broiler chickens in Brazil: systematic review and meta-analysis Rev. Bras. Ciênc. Avic.
Faria Filho,DE; Torres,KAA; Faria,DE; Campos,DMB; Rosa,PS.
This study evaluated the efficacy of probiotic utilization as growth promoters in broiler chicken feeding using systematic literature review and meta-analysis. Thirty-five studies were recovered by the systematic review, 27 of which met the following criteria to be included in the meta-analysis: (1) Brazilian studies published between 1995 and 2005; (2) probiotics administered in the diet without growth promoter; (3) results included performance data with the respective coefficient of variation. Meta-analysis have shown that the probiotics promoted better weight gain and feed conversion than the negative control (no antimicrobial) in the initial phase (1 to 20-28 days); nevertheless, results were similar in the total period (1 to 35-48 days). Weight gain...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Birds; Intestinal microflora; Microorganism; Performance.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000200004
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Ingredient classification according to the digestible amino acid profile: an exploratory analysis Rev. Bras. Ciênc. Avic.
Faria Filho,DE; Torres,KAA; Campos,DMB; Vieira,BS; Urbano,T; Rosa,PS; Ferraudo,AS.
This study aimed: 1) to classify ingredients according to the digestible amino acid (AA) profile; 2) to determine ingredients with AA profile closer to the ideal for broiler chickens; and 3) to compare digestible AA profiles from simulated diets with the ideal protein profile. The digestible AA levels of 30 ingredients were compiled from the literature and presented as percentages of lysine according to the ideal protein concept. Cluster and principal component analyses (exploratory analyses) were used to compose and describe groups of ingredients according to AA profiles. Four ingredient groups were identified by cluster analysis, and the classification of the ingredients within each of these groups was obtained from a principal component analysis,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Broiler chicken; Cluster analysis; Ideal protein; Ingredients; Principal component analysis.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000300009
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