Response to Lysine Supplementation by Laying Hens Fed Practical Diets

Jensen, L. S.; Chang, Chun–Ju; Falen, L.

doi:10.3382/ps.0531387

Cited by 25 publications

(10 citation statements)

References 11 publications

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“…The diets used in the present study contained either wheat or triticale as the cereal grain. Results with laying hens suggest that the lysine requirement is higher with wheat-based rations than with corn (Jensen et al, 1974).…”

Section: Discussionmentioning

confidence: 86%

Lysine Needs of Rapidly Growing Turkeys from 12–22 Weeks of Age

et al. 1976

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Two experiments were conducted with Large White male turkeys to investigate the lysine requirement from 12 to 22 weeks of age. Six pens of 20 turkeys were fed each of the experimental diets. In experiment 1, a basal diet containing wheat, meat meal, cottonseed meal and distillers dried grains with solubles was supplemented with four levels of L-lysine. Lysine at 4.27% of protein and 2.31 g./mcal. of metabolizable energy from 16 to 20 weeks of age, and 1.83 g. from 20 to 22 weeks of age was inadequate for optimum growth and feed efficiency (16-22 weeks). Supplementing the diet with lysine from soybean meal gave performance equivalent to synthetic lysine, indicating that it was fully available. Performance of turkeys fed a diet containing 88% triticale from 16 to 20 weeks of age, and 72% from 20 to 22 weeks of age was equivalent to that of turkeys fed a more complex ration with an equivalent level of lysine. In experiment 2, Large White male turkeys were fed a basal diet composed largely of triticale and soybean meal from 12 to 20 weeks of age with different levels of added lysine. From 12 to 16 weeks of age, 3.11 g. lysine/mcal. of M.E. (4.9% of protein) was adequate for optimum growth and feed efficiency. From 16-20 weeks of age 2.36 g. lysine/mcal. of M.E. (4.3% of protein) was adequate for optimum performance. Although the estimated requirement from 16 to 20 weeks of age based on the two experiments differs (perhaps because of differences in lysine availability), the results suggest that the current N.R.C. recommendation may be higher than necessary.

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Section: Discussionmentioning

confidence: 86%

Lysine Needs of Rapidly Growing Turkeys from 12–22 Weeks of Age

et al. 1976

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“…Lysine is most often considered to be the first limiting amino acid for production (a.0. Jensen et al, 1974;Pilbrow & Moms, 1974;Elwinger & Svensson, 1984). The contents of lysine and methionine in the CAhl diet were similar to those used in commercial practice in Sweden (Lagervall, 1985).…”

Section: Discussionmentioning

confidence: 94%

“…The discrepancy may be due to the strain of birds used and its total production capacity as well as feed ingredients used. Hence, theories are reported on different availability of lysine from different feed ingredients-wheat based diets having lower availability of lysine than cordsoybean diets (March & Biely, 1972;Jensen et al, 1974;NKC, 1977). Elwinger & Svensson (1984) found optimum total lysine intake for SCWL's with CAM (based on Swedish graidsoybean meaVfish meal) to be 800 mg per hen and day, considering the current costs for varying lysine levels and price of eggs.…”

Section: Discussionmentioning

confidence: 96%

Prototypes for Application of Choice Feeding in Caged Laying Hens Using Flat Chain Feeders

Tauson

Elwinger

1986

Acta Agriculturae Scandinavica

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“…A suplementação de aminoácidos essenciais em dietas para poedeiras comerciais e a formulação pelo conceito de proteína ideal vêm ganhando importância no setor produtivo, pois os níveis de aminoácidos, especialmente lisina, variam entre linhagens (Jensen et al, 1974;Klasing, 1998;Al-Saffar & Rose, 2002;Nahm, 2002). Entretanto, o que causa divergência entre resultados de pesquisas é a diversidade de linhagens (Bustany & Elwinger, 1987).…”

Section: Introductionunclassified

Níveis de lisina digestível para poedeiras Hy-Line W-36 em produção

et al. 2010

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RESUMO -Objetivou-se determinar os melhores níveis de lisina digestível para poedeiras em produção. Avaliaram-se o desempenho, o consumo de nutrientes, o metabolismo, a qualidade de ovos, os parâmetros sanguíneos e o desenvolvimento do aparelho reprodutor de 160 poedeiras Hy-Line W-36 com 25 semanas de idade. As aves foram distribuídas em delineamento inteiramente casualizado, com quatro níveis de lisina digestível (600, 700, 800 ou 900 mg de lisina/kg de ração) e quatro repetições, utilizando-se o esquema de parcelas subdivididas na avaliação do balanço de nitrogênio, dos parâmetros sanguíneos e do aparelho reprodutor. Os níveis de lisina da dieta influenciaram os consumos de alimento, proteína e energia, cujo ponto de máximo foi observado no nível de 720 mg de lisina. Para produção de ovos, o melhor nível foi 800 mg de lisina; para conversão alimentar, 900 mg; e, para balanço de nitrogênio, 700 mg. A digestibilidade de extrato etéreo, a qualidade dos ovos, o desenvolvimento do aparelho reprodutor e os parâmetros sanguíneos não foram influenciados pelos níveis de lisina digestível da dieta. Recomendam-se níveis de 700 a 800 mg de lisina digestível para metabolismo e desempenho e 600 mg para qualidade dos ovos e melhor desenvolvimento do aparelho reprodutor.Palavras-chave: aminoácido, oviduto, produção de ovos, qualidade de ovos, sangue Levels of digestible lysine for Hy-Line W-36 hens in production periodABSTRACT -In this experiment it was aimed to determine the best levels of digestible lysine for laying hens in production period. Performance, nutrients intake, metabolism, egg quality, blood parameters and development of reproductive tract for 160 Hy-Line W-36 hens at 25 weeks of age. Hens were distributed in a completely randomized design with four levels of digestible lysine (600, 700, 800 or 900 mg of Lys/kg) and four replicates by using a split spot scheme was used at evaluation of nitrogen balance, blood parameters and reproductive tract. Lysine levels in the diet affected food, protein and energy intakes whose maximum point was noted at the level of 720 mg of Lysine. For egg production, food conversion, and nitrogen balance, the best levels of lysine was 800 mg, 900 mg, and 700 mg, respectively. The digestibility of ethereal extract, egg quality, development of reproductive tract and blood parameters were not affected by levels of digestible lysine in the diet. It is suggested 700 and 800 mg of digestible lysine for metabolism and performance, respectively, and 600 mg for egg quality and better development of the reproductive trait.

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Response to Lysine Supplementation by Laying Hens Fed Practical Diets

Cited by 25 publications

References 11 publications

Lysine Needs of Rapidly Growing Turkeys from 12–22 Weeks of Age

Lysine Needs of Rapidly Growing Turkeys from 12–22 Weeks of Age

Prototypes for Application of Choice Feeding in Caged Laying Hens Using Flat Chain Feeders

Níveis de lisina digestível para poedeiras Hy-Line W-36 em produção

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