Effect of Dietary Energy and Protein on Performance, Egg Composition,
Egg Solids, Egg Quality and Profits of Hy-Line W-36 Hens During Phase 2

Wu, G.; Gunawardana, P.; Bryant, M. M.; Roland, D. A.

doi:10.3923/ijps.2007.739.744

Cited by 12 publications

(3 citation statements)

References 7 publications

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“…The energy (and nutrient) concentration of the diet did not affect egg production, in agreement with previous reports ( Leeson et al., 2001 ; Jalal et al., 2006 ; Wu et al., 2007 ; Saldaña et al., 2016 ). An increase in energy from 2,680 to 2,780 kcal/kg (a 3.8% increase) decreased ADFI by 1.0% and increased egg mass by 2.3%, although the differences were not significant ( P = 0.13 and P = 0.12, respectively).…”

Section: Discussionsupporting

confidence: 92%

Influence of the energy and digestible lysine contents of the diet on performance and egg quality traits of brown-egg laying hens from 19 to 59 weeks of age

Scappaticcio

García²,

Fondevila

et al. 2021

Poultry Science

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The influence of nutrient density and standardized ileal digestible lys ( DLys ) content of the diet on egg production and egg quality traits, was studied in brown-egg laying hens from 19 to 59 wk of age. The experimental design was completely randomized with eight treatments arranged as a 2×4 factorial with two AMEn concentrations (2,680 and 2,780 kcal/kg) and four levels of DLys (0.68, 0.72, 0.76, and 0.80%). Each treatment was replicated nine times and the experimental unit was a cage with nine hens. Hen production, egg components (proportion of albumen, yolk, and shell), egg quality traits (Haugh units, egg shell strength, and incidence of broken, dirty, and shell-less eggs) were measured by period (28 d) and cumulatively. Data were analyzed as a completely randomized design with energy concentration, level of DLys, and their interactions as main effects. In addition, the effects of the level of DLys on the variables studied, were partitioned into its linear and quadratic components. No interactions between AMEn and DLys content of the diet were detected for any of the traits studied and therefore, only main effects are presented. An increase in the AMEn concentration of the diet from 2,680 to 2,780 kcal/kg increased energy intake ( P < 0.05) and egg weight ( P < 0.001) and improved feed conversion ratio ( P < 0.05). An Increase in DLys from 0.68 to 0.80% did not affect the number of eggs produced but increased linearly egg weight ( P < 0.01) and egg mass production ( P < 0.05). Diet did not affect egg quality. In conclusion, an increase in the AMEn content of the diet from 2,680 to 2,780 kcal/kg increased egg weight and improved feed efficiency. Laying hens require no more than 744 mg DLys/d (corresponding to 0.68% DLys) to optimize egg production. However, when the objective is to maximize egg weight, hens should consume at least 843 mg DLys/d (corresponding to 0.76% D Lys).

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Section: Discussionsupporting

confidence: 92%

Influence of the energy and digestible lysine contents of the diet on performance and egg quality traits of brown-egg laying hens from 19 to 59 weeks of age

Scappaticcio

García²,

Fondevila

et al. 2021

Poultry Science

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“…Actually, in this study, the energy: protein ratio is 156.15:1 for the control diet and 150.9:1 for the high‐Ca diet; hence, there is no big difference between the control and high‐Ca diets and 100 kcal ME/kg did not affect the growth performance that is supported by other researchers. Wu, Gunawardana, Bryant, and Roland (2007) observed that increased dietary energy from 2,784 to 2,887 Kcal/kg with different protein levels did not affect feed intake, body weight, and FCR. In addition, InfanteRodrيguez et al (2016) suggested that the increase in dietary protein in dry tropics enhanced growth performance and improved FCR of broiler chickens, which maintained BWG with lower feed intake.…”

Section: Discussionmentioning

confidence: 99%

Biochemical and molecular investigation of oxidative stress associated with urolithiasis induced by increased dietary calcium or protein in chickens

Sebaei

Arafat

El‐Shafei

et al. 2020

Animal Physiology Nutrition

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This study was carried out to evaluate the effects of induced urolithiasis by high dietary calcium (Ca) or protein levels on biochemical analyte levels, redox status, selected inflammatory cytokines and histopathology in chickens. A total of 90 one‐day‐old white Hy‐Line chicks were fed basal control diets containing 20% crude protein (CP) and 1% Ca until they reached 44 days of age. After that, the birds were divided into three groups (30 birds per group). All management factors (light, temperature, ventilation, stock density and diet) were identical among the three groups throughout the study except for the dietary Ca and protein percentages. Group I was fed a control diet containing 20% CP and 1% Ca, group II was fed a high‐Ca diet containing 5% Ca, and group III was fed a high‐protein diet containing 25% CP. Our findings clearly demonstrated that dietary imbalance (caused by high‐Ca or high‐CP levels) per se in chickens was physiologically harmful, as it was accompanied by post‐mortem lesions; biochemical, redox status and histopathological alterations; and upregulation of inflammatory cytokines (interleukin (IL)‐1β and IL‐6). In particular, the birds fed the high‐Ca diet clearly exhibited the most obvious alterations in most of the endpoints. In conclusion, this study constitutes the first extensive investigation of the effects of high‐Ca or high‐protein diets induced urolithiasis on growth performance, redox status, inflammatory cytokine levels and pathological characterization in chickens.

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“…El PorCla aumentó 1.8% (p < 0.05) al aumentar la PC de 16.1 a 17.4% (Wu et al 2007) y en este estudio el PorCla aumentó 2.9% (Tabla 2). Moula et al (2010) reportaron en gallina ponedora comercial, los siguientes valores de porcentajes de clara, yema y cascarón: PorCla (59.4%), PorY (28.6%) y PorCas (12.0%) muy parecidos a los del presente experimento con 16% de PC (Tabla 2).…”

Section: Características Del Huevounclassified

Niveles de proteína cruda, desempeño productivo y características del huevo de gallinas de segundo ciclo

Sosa-Montes

Sánchez-Morales

Pró-Martínez

et al. 2021

Ecosist. Recur. Agropec.

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Se evaluó el efecto de dos alimentos comerciales con diferente nivel (16 y 18 %) de proteína cruda (PC), en el desempeño productivo y características del huevo de gallinas ponedoras de segundo ciclo. Cada tipo de alimento se asignó aleatoriamente a 210 gallinas, alojadas por pares en una jaula, cada ave recibió 115 g de alimento por día. Durante 52 días (d) se registraron las variables: porcentaje de postura (PorP, %), peso del huevo (PesH, g), masa de huevo (MasH, g ave-1 d-1), conversión alimenticia (ConA, g g-1), porcentajes de diferentes categorías de huevo y relación beneficio/costo (B/C); cada día se consideró una repetición. En los últimos ocho días del estudio se eligieron aleatoriamente 64 huevos de cada tratamiento (8 huevos d-1). De cada huevo se registró: longitud (L, cm), anchura (A, cm), índice de forma (IFH), pesos de yema, clara y cascarón (PesY, PesCla y PesCas, g, respectivamente) y sus porcentajes (PorY, PorCla y PorCas, %, respectivamente). El alimento con 18% de PC produjo mejores valores (P < 0.05) de PorP, PesH, MasH, ConA, L y A que el tratamiento con 16% de PC. Las variables IFH, PorY y B/C no fueron diferentes (P > 0.05) entre tipos de alimento. Los huevos de las aves con 18% de PC, mostraron mayor (P < 0.05) PorCla y menor PorCas respecto a las aves con 16% de PC. En conclusión, el alimento comercial con 18% de PC mejoró el desempeño productivo y varias características del huevo, sin afectar la relación beneficio/costo.

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Effect of Dietary Energy and Protein on Performance, Egg Composition, Egg Solids, Egg Quality and Profits of Hy-Line W-36 Hens During Phase 2

Cited by 12 publications

References 7 publications

Influence of the energy and digestible lysine contents of the diet on performance and egg quality traits of brown-egg laying hens from 19 to 59 weeks of age

Influence of the energy and digestible lysine contents of the diet on performance and egg quality traits of brown-egg laying hens from 19 to 59 weeks of age

Biochemical and molecular investigation of oxidative stress associated with urolithiasis induced by increased dietary calcium or protein in chickens

Niveles de proteína cruda, desempeño productivo y características del huevo de gallinas de segundo ciclo

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