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Boletim de Indústria Animal
Article . 2013 . Peer-reviewed
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Boletim de Indústria Animal
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Boletim de Indústria Animal
Article . 2013
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Níveis de fósforo e fitase para poedeiras comerciais leves

Authors: D. A. Berto; Rosemeire da Silva Filardi; Antonio Carlos de Laurentiz; Sérgio Turra Sobrane Filho; Vitor Barbosa Fascina; Juliana Cristina Ramos Rezende;

Níveis de fósforo e fitase para poedeiras comerciais leves

Abstract

Objetivou-se com esta pesquisa avaliar o desempenho e a qualidade óssea de poedeiras na fase de pós pico de postura, alimentadas com dietas contendo níveis de fósforo e fitase. Foi realizado um experimento com 384 poedeiras da linhagem Hy-line branca distribuídas em delineamento inteiramente casualizado em esquema fatorial 4 x 3, com 4 níveis de fósforo disponível e 3 níveis de fitase. O período experimental foi dividido em quatro ciclos de 28 dias, ao final de cada ciclo experimental foram determinados o consumo de ração, produção de ovos, peso de ovos, conversão alimentar, mortalidade, peso médio do ovo, espessura de casca, unidades Haugh e gravidade específica dos ovos. Ao final do período experimental foram determinadas as quantidades de cálcio e fósforo excretadas pelo método de coleta total de excretas e uma ave por unidade experimental foi sacrificada por deslocamento da articulação crânio-cervical para retirada dos ossos e avaliação da largura, comprimento e índice de robustez do fêmur e tíbia. Houve interação entre os níveis de fósforo e fitase para consumo de ração, conversão alimentar e percentual de postura. Para os níveis de inclusão de fitase todas as variáveis de qualidade de ovo não apresentaram diferenças significativas. Os tratamentos não afetaram as características ósseas das poedeiras.

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Keywords

qualidade de ovos, características ósseas, fitato, cálcio, desempenho, SF1-1100, Animal culture

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    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
3
Average
Average
Average
gold