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Transcript
Acta Scientiarum. Animal Sciences
ISSN: 1806-2636
[email protected]
Universidade Estadual de Maringá
Brasil
dos Santos, Tiago Antônio; Geraldo, Adriano; Machado, Luiz Carlos; Amaro Gonçalves,
Rogério; Pelícia, Kléber; Domingos Simão, Sérgio
Digestible lysine levels in semi-heavy laying hens in the period from 28 to 44 weeks of age
Acta Scientiarum. Animal Sciences, vol. 36, núm. 2, abril-junio, 2014, pp. 145-150
Universidade Estadual de Maringá
.png, Brasil
Available in: http://www.redalyc.org/articulo.oa?id=303130421004
Abstract
This study aimed to evaluate the performance of laying hens subjected to heavy semi-low crude protein (14.0%) and lysine levels
while maintaining the same relation of digestible amino acid/ digestible lysine. A commercial line of 420 Isa Brown laying hens, in
the period from 28 to 44 weeks of age, were distributed in 42 experimental plots. A completely randomized design with six
treatments and seven replicates in four periods of 28 days/each was used. The treatments were: Control - Formulated according to
the nutritional requirements proposed in the strain, containing 16.92% crude protein, 0.750% digestible lysine. Treatments 1 to 5,
with crude protein levels of 14% and 0.600% of digestible lysine, 0.675%, 0.750%, 0.825% and 0.900%, respectively. The
requirement of lysine, in relation to other digestible amino acids, can be estimated at 0.750% in diet with 14% crude protein, which
corresponds to the average daily intake of 876 mg lysine dig. hen-1 day-1, without compromising the performance of hens.
Keywords
Ideal protein, digestible amino acid, Isa Brown.
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