Energy and lysine for broilers from 44 to 55 days of age

Araújo, LF; Junqueira, Otto Mack; Araújo, Css; Barbosa, L. D.; Ortolan, JH; Faria, Douglas Emygdio de; Stringhini, José Henrique

doi:10.1590/s1516-635x2005000400007

Cited by 16 publications

(18 citation statements)

References 20 publications

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“…This ratio is lower than 0.89 and 1.84 reported by Sinurat and Balnave () and Araujo et al. (), respectively, for broiler chickens. This might be because the broiler chickens are fast‐growing chickens and, thus, require a higher dietary lysine to energy ratio.…”

Section: Discussioncontrasting

confidence: 65%

“…() and Araujo et al. (), respectively, for broiler chickens aged 3 to 6 weeks. The difference might be attributed to different breeds used.…”

Section: Discussionmentioning

confidence: 99%

“…Mohammad and Sohail (2008) stated that balanced nutrition is an important factor in determining performance and productivity of chickens. Numerous authors indicated that dietary lysine to energy ratio improved production parameters in broiler chickens (Araujo et al, 2005;Mbajiorgu et al, 2011;Hind et al, 2012). Mbajiorgu et al (2011) indicated that varying lysine to energy ratio in the diets has effect on productivity of Venda chickens.…”

Section: Introductionmentioning

confidence: 99%

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Growth and haematological response of indigenous Venda chickens aged 8 to 13 weeks to varying dietary lysine to energy ratios

Alabi

Ng’ambi

Mbajiorgu

et al. 2014

Animal Physiology Nutrition

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The effect of feeding varying dietary lysine to energy levels on growth and haematological values of indigenous Venda chickens aged 8 - 13 weeks was evaluated. Four hundred and twenty Venda chickens (BW 362 ± 10 g) were allocated to four dietary treatments in a completely randomized design. Each treatment was replicated seven times, and each replicate had fifteen chickens. Four maize-soya beans-based diets were formulated. Each diet had similar CP (150 g/kg DM) and lysine (8 g lysine/kg DM) but varying energy levels (11, 12, 13 and 14 MJ ME/kg DM). The birds were reared in a deep litter house; feed and water were provided ad libitum. Data on growth and haematological values were collected and analysed using one-way analysis of variance. Duncan's test for multiple comparisons was used to test the significant difference between treatment means (p < 0.05). A quadratic equation was used to determine dietary lysine to energy ratios for optimum parameters which were significant difference. Results showed that dietary energy level influenced (p < 0.05) feed intake, feed conversion ratio, live weight, haemoglobin and pack cell volume values of chickens. Dry matter digestibility, metabolizable energy and nitrogen retention not influenced by dietary lysine to energy ratio. Also, white blood cell, red blood cell, mean corpuscular volume, mean corpuscular haemoglobin and mean corpuscular haemoglobin concentration in female Venda chickens aged 91 days were not influenced by dietary lysine to energy ratio. It is concluded that dietary lysine to energy ratios of 0.672, 0.646, 0.639 and 0.649 optimized feed intake, growth rate, FCR and live weight in indigenous female Venda chickens fed diets containing 8 g of lysine/kg DM, 150 g of CP/kg DM and 11 MJ of ME/kg DM. This has implications in diet formulation for indigenous female Venda chickens.

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Section: Discussioncontrasting

confidence: 65%

“…() and Araujo et al. (), respectively, for broiler chickens aged 3 to 6 weeks. The difference might be attributed to different breeds used.…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Growth and haematological response of indigenous Venda chickens aged 8 to 13 weeks to varying dietary lysine to energy ratios

Alabi

Ng’ambi

Mbajiorgu

et al. 2014

Animal Physiology Nutrition

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“…In accordance with Araújo et al (2005), when raising lysine levels in diets, this may lead to an increase in performance and improvement in carcass yield and broiler breast, in the final phase. However, this fact occurs if the relationship between the lysine and other amino acids is respected, especially the sulfur-containing, as also the nitrogen balance of diets on this stage (Trindade Neto et al, 2009;Goulart et al, 2011).…”

Section: Resultsmentioning

confidence: 82%

<b>Digestible lysine for broilers from different commercial strains in the final phase

Dalólio

Moreira

Vaz

et al. 2016

Acta Sci. Anim. Sci.

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ABSTRACT. This study aimed to evaluate different digestible lysine levels in diets for broilers chickens from different commercial strains, from 49 to 56 days of age, on performance and carcass characteristics. A total of 432 male broilers from 49 days old were used, with an average weight of 3560±250 g. It was used a completely randomized design in a factorial arrangement 3x4, and the birds, from three strains (Cobb 500, Hubbard Flex and Ross 308) were divided into four levels of digestible lysine (0.800, 0.950, 1.100 and 1.250%), with four replicates of 12 birds each. It was evaluated the weight gain, feed intake, feed conversion ratio, carcass yield, breast yield, breast meat yield and the yield of the thigh and drumstick. There was no interaction between lysine levels and commercial strains of broiler chickens. The different lysine levels did not influence (p ≥ 0.05) performance and carcass yield. There are significant differences between strains for feed intake and carcass characteristics. The Cobb 500 strain had higher breast yield and breast meat (p < 0.05), while the Hubbard Flex and Ross 308 strains had higher yield of the thigh and drumstick (p < 0.05).Keywords: amino acids, breast meat, performance, genotypes, carcass yield.Lisina digestível para frangos de corte de diferentes linhagens na fase final de criação RESUMO. Objetivou-se avaliar diferentes níveis de lisina digestível em rações para frangos de corte de diferentes linhagens comerciais na fase de 49 a 56 dias de idade sobre o desempenho e características de carcaça. Foram utilizados 432 frangos de corte machos de 49 dias de idade, com peso médio inicial de 3560±250 g. Utilizou-se o delineamento inteiramente casualizado em arranjo fatorial 3x4, sendo que as aves, oriundas de três linhagens (Cobb 500, Hubbard Flex e Ross 308), foram distribuídas em quatro níveis de lisina digestível (0,800; 0,950; 1,100 e 1,250%), com quatro repetições de 12 aves cada. Avaliou-se o ganho de peso, o consumo de ração, a conversão alimentar, o rendimento de carcaça, o rendimento de peito, o rendimento de carne de peito e o rendimento de coxa e sobrecoxa. Não houve interação entre os níveis de lisina digestível e as linhagens comerciais de frangos de corte. Os diferentes níveis de lisina não influenciaram (p ≥ 0,05) o desempenho e rendimento de carcaça. Existem diferenças significativas entre as linhagens para consumo de ração e características de carcaça. Sendo que a linhagem Cobb 500 teve maior rendimento de peito e carne de peito (p ≤ 0,05), enquanto as linhagens Hubbard Flex e Ross 308 tiveram maior rendimento de coxa e sobrecoxa (p ≤ 0,05).Palavras-chave: aminoácido, carne de peito, desempenho, genótipos, rendimento de carcaça.

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“…Tel: +989121150409. Fax: 982612246752. weight gain and also improvement of feed conversion (Araujo et al, 2005;Albuquerque et al, 2003) otherwise. There exists positive phonotype cohesion between rate of weight gain and substitution of fat in tissue (Jackson et al, 1982) and also experiments have shown that the best performance (higher rate of weight gain and lower FCR) is not always followed by the maximum economic output (Reginatto et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

Effect of dietary dilution of energy and nutrients during different growing periods on compensatory growth of Ross broilers

Tooci¹,

Saifeddine²,

Eila³

et al. 2009

Afr. J. Biotechnol.

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A completely randomized design was conducted to evaluate the effect of dietary dilution of energy and nutrients during different growing periods on compensatory growth of Ross broilers. Four replicant pens were assigned per seven treatments. Chicks in each treatment received concentrated and diluted diets in different stages of growing periods (starter, grower and finisher). The diets were mainly based on maize and soybean meal and had constant ratio of metabolizable energy/nutrients. It was concluded that feed intake, feed conversion, production index, feed cost and metabolizable energy per weight gain of chicks receiving concentrated diets during all stages of growing periods were the same as the chicks receiving diluted diets during finisher period (P > 0.05). The amount of abdominal fat was significantly lower in chicks receiving diluted diets during finisher period (P ≤ 0.05). Mortality percentage in chicks receiving concentrated diets during all stages of growing periods was significantly more than other treatments (P ≤ 0.05). Based on the results of the experiment, diluted diets for finisher period of Ross broilers male chicks is suggested.

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Energy and lysine for broilers from 44 to 55 days of age

Cited by 16 publications

References 20 publications

Growth and haematological response of indigenous Venda chickens aged 8 to 13 weeks to varying dietary lysine to energy ratios

Growth and haematological response of indigenous Venda chickens aged 8 to 13 weeks to varying dietary lysine to energy ratios

<b>Digestible lysine for broilers from different commercial strains in the final phase

Effect of dietary dilution of energy and nutrients during different growing periods on compensatory growth of Ross broilers

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