Genetic divergence between genotypes for male and female broilers

Veloso, Rogério de Carvalho; Ferreira, Talita Andrade; Winkelstroter, Larissa Kretli; Silva, Maria Teresa Polcaro; Pires, Aldrin Vieira; Filho, Rodolpho de Almeida Torres; Pinheiro, Sandra Regina Freitas

doi:10.1590/0103-8478cr20141466

Cited by 3 publications

(4 citation statements)

References 8 publications

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“…Moreira et al (2003) evaluated different strains of broilers at 49 days of age, and found that Cobb 500 had feed intake 9% lower compared to Hubbard strain, without differing (p > 0.05) in weight gain. These differences may be associated with the genetic divergence existing among the main commercial genotypes operated in Brazil (Cobb 500, Ross 308 and Hubbard Flex) and with the variations in the pattern and growth curve of broilers, which can alter nutrient intake (Marcato et al, 2010;Veloso et al, 2015). However, when evaluating different strains, this variation may not be enough to cause significant changes in weight gain and feed efficiency.…”

Section: Resultsmentioning

confidence: 99%

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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Section: Resultsmentioning

confidence: 99%

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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“…It is considered a complete criterion and so recommended as a model of choice. Veloso et al (2015) analyzed the models of growth curves for the Pescoço Pelado, Pesadão Vermelho, Tricolor, Carijó and Colorpak lineages and confirmed that the Richards and Brody models did not adjust to the description of the growth of Caipira birds, and that the models Gompertz, Bertalanffy and Logistico adjusted to the growth of the studied lineages. From the three of them, the Bertalanffy model was the one that showed the best adjustment.…”

Section: Resultsmentioning

confidence: 74%

“…The slaughter weight of chickens is 2.3 kg on average, so that the Pescoço Pelado lineage (PP) takes less time to reach the age of slaughter, followed by the Pesadão Vermelho and Carijó lineages (Table 2). However, Veloso et al (2015) verified that the lineages Pescoço Pelado, Pesadão Vermelho and Carijó reached a weight of 2.3 kg at 70 days of age.…”

Section: Resultsmentioning

confidence: 82%

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Analysis of growth curves in different lineages of Caipira broiler type

Araújo

Rodrigues

Vaz

et al. 2018

Acta Sci. Anim. Sci.

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The objective of this work was to identify, by means of different statistical criteria the ideal nonlinear regression model to describe the growth curve of three lineages of caipira broiler for meat production. A total of 90 birds were used, being 30 birds from each of the following lineages: Pescoço Pelado, Carijó and Pesadão Vermelho. The individual body weight of broilers (1, 7, 14, 21,28, 35, 42, 49, 56, 63, 70, 77, 84 and 91 days of age) was collected weekly for determination of growth curves by means of Models von Bertalanffy, Gompertz, Logistic, Richards and Brody. The parameters of Brody model did not converge to the weight of strains. The model that better adjusted to the data was Logistic.

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Comparison between two multivariate analyses for the evaluation of genetic divergence for carcass and meat quality traits in alternative lines of chicken

Goes

Castilho

Veloso

et al. 2021

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The univariate analysis is becoming harder to use due the increasing number of characteristics of economic importance in agricultural industry. The multivariate approach provides an answer to this issue, allowing to analyze several traits when comparing different methodologies, genetics and products. This study aimed to use and compare the canonical variable analysis (CVA) and principal component analysis (PCA) to evaluate 7 genotypes of alternative lines of chicken (Caboclo, Carijó, Colorpak, Gigante Negro, Pesadão Vermelho, Naked Neck and Tricolor). The study evaluated 840 male chicks reared at 91 days from these genotypes, in a completely randomized design with 4 replicates per genotype. Different traits (23) were measured, and only 7 remained relevant after the multivariate approach: Carcass yield, Breast Yield, Back Yield, Cooking Loss, lightness, yellowness and water holding capacity. Both analyses remained with two variables explaining the variating. The Pearson correlation was used to measure the traits responsible for the most variance between genotypes. On the principal component cooking loss, carcass and breast yields, and the color parameters lightness and yellowness were the most relevant, while on canonical variables it was carcass yield, breast yield, lightness, yellowness and back yield. Both analysis resulted in similar conclusion, allowing to classify the genotypes in three major groups: 1 (Pesadão vermelho, Carijó, Colorpak, Nacked Neck), 2 (Gigante Negro and Caboclo) and 3 (Tricolor). PCA and CVA facilitate the interpretation of data with several traits of importance, showing the main traits responsible for genetic divergence.

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Genetic divergence between genotypes for male and female broilers

Abstract: ABSTRACT

Cited by 3 publications

References 8 publications

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

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

<b>Analysis of growth curves in different lineages of <i>Caipira</i> broiler type

Comparison between two multivariate analyses for the evaluation of genetic divergence for carcass and meat quality traits in alternative lines of chicken

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