2014
DOI: 10.1590/1516-635x160243-50
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Abstract: KeywordsRice hulls, cottonseed hulls, soybean hulls, crude protein, egg production. ABSTRACTThis study aimed at evaluating diets containing different fiber sources and two crude protein levels on the performance, egg quality, and nitrogen metabolism of commercial layers. In total, 392 48-wk-old Isa Brown layers were distributed according to a completely randomized experimental design in a 3x2+1 (control) factorial arrangement, resulting in seven treatments with seven replicates of eight birds each. Treatment… Show more

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Cited by 7 publications
(12 citation statements)
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“…Some studies reported that egg production increased when dietary protein content was increased (Leeson & Caston, 1996;Praes et al, 2014), also another study reported that diets with low protein exhibite negative effect on egg production (Keshawarz 1998;Cufadar et al, 2010) in isoenergetic hen diets. However, it was reported that diets with high protein and low energy have a negative effect on egg production (Li et al, 2013;Steenhuisen & Gous, 2016).…”
Section: Egg Weight and Hatching Chick Weightmentioning
confidence: 99%
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“…Some studies reported that egg production increased when dietary protein content was increased (Leeson & Caston, 1996;Praes et al, 2014), also another study reported that diets with low protein exhibite negative effect on egg production (Keshawarz 1998;Cufadar et al, 2010) in isoenergetic hen diets. However, it was reported that diets with high protein and low energy have a negative effect on egg production (Li et al, 2013;Steenhuisen & Gous, 2016).…”
Section: Egg Weight and Hatching Chick Weightmentioning
confidence: 99%
“…The highest egg production was found in 18%-7:1 group. It is well known that hen diets with high protein and adequate energy have positive effects on egg production (Leeson & Caston 1996;Praes et al, 2014). It was reported that the egg production increased with female increasing (Deeming & Wadland 2002).…”
Section: Egg Weight and Hatching Chick Weightmentioning
confidence: 99%
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“…Contrary, Samli et al (2006) obtained a significantly (P<0.05) reduced egg production from 93.6 to 87.8%, on 15% dietary rice bran inclusion responsible also for the decreased feed intake. Also, Praes et al (2014) experimented three fiber sources (cottonseed, soybean and rice hulls) and two dietary crude protein levels (12% and 16%) on Isa Brown layers and noticed negative effects on production parameters. Alagawany et al (2015) stated that a content higher than 8.9% CF (26% SFM) will effect negatively the egg production.…”
Section: Layer Performances and Egg Qualitymentioning
confidence: 99%
“…Fertility and hatchability are two major parameters that highly influence the supply of day-old chicks. Many factors of which nutrition, sex ratio, age, egg weight and storage duration are the most important ones could affect fertility and hatchability of eggs (Praes et al 2014;Uğurlu et al 2017). For the hatchability traits, breed has little effect on hatchability of poultry eggs, although light breeds like White Leghorn have been reported to have high fertility and hatchability (King'ori 2011).…”
Section: Fertility and Hatchability Of Eggsmentioning
confidence: 99%