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Digestibilidade e valor biológico da proteína da levedura seca (Saccharomyces spp) e do farelo de soja para coelhos

Authors: Ana Regina Techiatti Fazano; Cyro Fúlvio Zinsly; Wilson Roberto Soares Mattos; Irineu Humberto Packer;

Digestibilidade e valor biológico da proteína da levedura seca (Saccharomyces spp) e do farelo de soja para coelhos

Abstract

Em um ensaio de metabolismo com 28 dias de duração, sendo 18 preliminares e 10 de coleta, no qual optou-se pelo método de coleta total, 20 láparos recém-desmamados com peso médio inicial de 950 g e idade de 40 dias, de ambos os sexos, das raças California e Nova Zelândia Branco, foram submetidos a 4 tratamentos, através de um esquema fatorial envolvendo 2 fontes de proteína (levedura seca e farelo de soja) e 2 níveis protéicos (8 e 12%). Para cada tratamento foram utilizados 5 repetições de 1 animal. As médias dos coeficientes de digestibilidade aparente (C.D.A.) da proteína do farelo de soja (93,37 e 91,44%) para as rações contendo 8 e 12% de proteína bruta, respectivamente, foram maiores (P <0,01) que os observados para a levedura seca (85,85 e 87,72%) para os mesmos níveis protéicos. Com relação ao valor biológico aparente, este não se apresentou estatisticamente diferente, para os níveis de proteína estudados (51,96 e 56,53%; 55,37 e 57,17%, respectivamente para o farelo de soja e levedura seca). Os resultados obtidos permitem concluir que apesar dos C.D.A. da levedura serem estatisticamente inferiores aos observados para o farelo de soja, podem ser considerados altamente favoráveis, tendo-se em vista o maior conteúdo de nitrogênio não protéico (NNP) da levedura o que nos leva a supor que, parte desse NNP foi utilizado pelos microrganismos do ceco na síntese protéica.

Keywords

levedura seca, digestibilidade e valor biológico aparentes, coelhos em crescimento, digestibilidade e valor biológico aparentes, SF1-1100, Animal culture

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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!
0
Average
Average
Average
gold