Desempenho, qualidade dos ovos e balanço de nitrogênio de poedeiras comerciais alimentadas com rações contendo diferentes níveis de proteína bruta e lisina

Silva, Mayra Fernanda Rizzo; Faria, Douglas Emygdio de; Rizzoli, Paula Wick; Santos, A. L. F. dos; Sakamoto, Márcia Izumi; Souza, Henrique Rosa Baltazar de

doi:10.1590/s1516-35982010000600017

Cited by 14 publications

(24 citation statements)

References 13 publications

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“…These findings are consistent with those reported by Silva et al (2010), who evaluated diets with different crude protein levels (12, 14, 16, and 18%) supplemented with synthetic amino acids and observed that feed intake, egg weight, egg mass, and albumen percentage linearly increased with increasing crude protein levels. On the other hand, when evaluating crude protein level reduction from 16.5 to 15.25% with no amino acid supplementation in 24-wk-old Lohmann layer diets, did not find any differences in feed intake or feed conversion ratio per egg mass or per dozen eggs.…”

Section: High-fiber Diets With Reduced Crude Protein For Commercial Lsupporting

confidence: 92%

“…On the other hand, low crude protein levels determine low nitrogen availability, and therefore, better nitrogen utilization. Silva et al (2010), studying the effect of different crude protein levels (12, 14, 16, or 18%) on the nitrogen balance of Hisex White 49-wk-old layers, observed a positive linear effect on nitrogen intake and excretion. The utilization of fecal nitrogen exceeded 50% only when the 12% crude protein diet was fed.…”

Section: High-fiber Diets With Reduced Crude Protein For Commercial Lmentioning

confidence: 99%

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High-fiber diets with reduced crude protein for commercial layers

Praes

Junqueira

Pereira

et al. 2014

Rev. Bras. Cienc. Avic.

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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. Treatments consisted of three fiber feedstuffs (cottonseed hulls, soybean hulls, and rice hulls) and two dietary crude protein levels (12% and 16%). Cottonseed hulls associated with the high crude protein level (16%) resulted in the worst feed conversion ratio per dozen eggs. Diets with 16% crude protein resulted in the highest feed intake, egg production, egg weight, egg mass values, and improved feed conversion ratio (kg eggs/kg feed). The dietary inclusion of soybean hulls determined low yolk pigmentation, and of rice hulls, low egg specific gravity. The 16% crude protein diet with rice hulls promoted the best feed conversion ratio. Hens fed the reference diet presented higher egg mass and better feed conversion ratio per kg eggs and per dozen eggs. Hens fed the diets with low crude protein level (12%) had reduced nitrogen excretion, but presented worse egg production.

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Section: High-fiber Diets With Reduced Crude Protein For Commercial Lsupporting

confidence: 92%

Section: High-fiber Diets With Reduced Crude Protein For Commercial Lmentioning

confidence: 99%

High-fiber diets with reduced crude protein for commercial layers

Praes

Junqueira

Pereira

et al. 2014

Rev. Bras. Cienc. Avic.

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“…In contrary to this Silva et al (2010) observed nonsignificant response on EW and EM by various concentrations of lysine in diet. In current study indicating that CP had no effect on EW and EM.…”

Section: Egg Weight (Ew) and Egg Mass (Em)contrasting

confidence: 76%

Effect of feeding different levels of lysine and protein on the performance of WLH layers

Kumari

Reddy

Preetham

et al. 2017

IJAR

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A trial was conducted to evaluate the requirement of digestible lysine at various protein levels in the diet of WLH layers (BV-300) from 25-44 weeks of age. Layers (528) were fed with diets containing two protein levels i.e. 13.36 and 15.78 % each with 5 % concentration variations of lysine (0.50, 0.55, 0.60, 0.65, and 0.70) and a control with 17 % CP and 0.70 % lysine. Each diet was fed to six replicates of eight birds. Egg production, feed intake, body weight were not influenced either by the concentration of lysine or by level of protein in diet. Increased (P d" 0.05) egg weight and egg mass were observed with increasing lysine in diets. Better feed efficiency was observed with increasing lysine concentration. It can be concluded that WLH layers require approximately 0.65% lysine with 13.36% CP or 0.63% lysine with 15.78% CP (i.e. 598.80 vs 570 mg/h/day) in diet.

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“…Contrariando os resultados verificados neste estudo, Schutte & Smink (1998) constataram que a ingestão de lisina total não diferiu entre poedeiras alimentadas com rações com 16,4% PB e suplementadas com 0,04; 0,08; 0,12; 0,16; 0,20; 0,24 e 0,28% de lisina total. Silva et al (2010), com 12; 14; 16 e 18% de proteína e 0,85 e 1,00% de lisina total, também não observaram diferenças no consumo de lisina e proteína. Já Prochaska et al (1996) e Goulart (1997) observaram maior consumo de lisina com o aumento do nível de lisina das dietas de poedeiras comerciais, como registrado neste estudo (Tabela 5).…”

Section: Resultsunclassified

“…Em poedeiras com 32 semanas de idade, Jardim Filho et al (2010) verificaram que as maiores retenções de nitrogênio foram obtidas com fornecimento de 700 a 800 mg de lisina digestível/kg de ração e permitiram os melhores valores de balanço de nitrogênio e a maior quantidade de nitrogênio retido por grama de massa de ovo depositada. Silva et al (2010), no entanto, não verificaram efeito dos níveis de proteína e de lisina no balanço de nitrogênio em poedeiras com 48 semanas de idade.…”

Section: Introductionunclassified

Níveis de lisina digestível para poedeiras Lohmann LSL na fase de 16 a 25 semanas de idade

et al. 2011

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RESUMO -Neste experimento foram avaliados os efeitos de níveis de lisina digestível no desempenho, no balanço de nitrogênio e na digestibilidade de extrato etéreo em poedeiras Lohmann LSL entre 16 e 25 semanas de idade. Foram avaliados quatro níveis de lisina digestível (0,6; 0,7; 0,8 e 0,9% da ração) utilizando-se 160 poedeiras durante o período de 16 até 25 semanas de idade. As dietas foram isonutritivas, com 17% de PB e 2.800 (pré-postura) e 2.750 kcal (pré-pico) EM/kg. O delineamento inteiramente casualizado foi adotado com quatro níveis de lisina digestível avaliados em quatro repetições. Os níveis de lisina digestível não influenciaram o ganho de peso, os consumos de ração e de proteína e energia, a idade ao primeiro ovo, a produção e o peso dos ovos, os índices de conversão alimentar, a massa do ovo e os balanços de nitrogênio e extrato etéreo. Houve aumento linear positivo do consumo de lisina de acordo com os níveis dietéticos de lisina digestível. Os níveis de lisina utilizados não interferem no desempenho nem no balanço de nutrientes. Sugere-se o uso de 0,6% de lisina por quilograma de ração. Palavras-chave: aminoácido essencial, consumo, frangas, produção de ovos Digestible lysine levels for Lohmann LSL hens 16 to 25 weeks of ageABSTRACT -In this experiment, the effects of digestible lysine levels on performance, nitrogen balance and fat digestibility in Lohmann LSL hens 16 to 25 weeks of age were evaluated. Four levels of digestible lysine (0.6, 0.7, 0.8 and 0.9% in ration) were assessed by utilizing 160 16-year-old laying hens 16 to 25 weeks of age. The diets were isonutritive with 17% CP and 2800 (pre laying) and 2750 (pre peak) kcal/kg. A completely randomized design was used with four lysine levels assessed in four replicates. The lysine levels did not influence weight gain, feed intake, protein and energy intake, age at first egg laying, egg production, egg weight, feed conversion indexes, egg mass, nitrogen balance or crude fat. There was positive linear increase on lysine intake according to the dietary levels of digestible lysine. Lysine levels do not influence the performance or the nutrients balance, and 0.6% of lysine per kilogram of feed is recommended.

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Desempenho, qualidade dos ovos e balanço de nitrogênio de poedeiras comerciais alimentadas com rações contendo diferentes níveis de proteína bruta e lisina

Cited by 14 publications

References 13 publications

High-fiber diets with reduced crude protein for commercial layers

High-fiber diets with reduced crude protein for commercial layers

Effect of feeding different levels of lysine and protein on the performance of WLH layers

Níveis de lisina digestível para poedeiras Lohmann LSL na fase de 16 a 25 semanas de idade

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