Crescimento e deposição de nutrientes nos órgãos de frangos de corte de duas linhagens comerciais

Marcato, Simara Márcia; Sakomura, Nilva Kazue; Fernandes, João Batista Kochenborger; Siqueira, Jefferson Costa de; Dourado, Leilane Rocha Barros; Freitas, Ednardo Rodrigues

doi:10.1590/s1516-35982010000500019

Cited by 31 publications

(40 citation statements)

References 13 publications

(12 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…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%

“…This can lead to better use of metabolizable energy of feed for productive purposes, such as meat deposition, which at this stage focuses mostly on the breast of broiler chickens. Marcato et al (2010) showed that the broilers strains, although similar, differ between each other in growth behavior and development of organs responsible for deposition and synthesis of dietary nutrients. CV = coefficient of variation (%); p -value = probability value; SEM = standard error of the means.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

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

Dalólio

Moreira

Vaz

et al. 2016

Acta Sci. Anim. Sci.

View full text Add to dashboard Cite

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.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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

Dalólio

Moreira

Vaz

et al. 2016

Acta Sci. Anim. Sci.

View full text Add to dashboard Cite

show abstract

“…The bird's growth study is very important in animal production, for providing data which can be used to optimize the quail's growth, in order to increase the size of the prime cuts, keeping the proper size of the organs, thereby avoiding future metabolic disorders (Marcato, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…There are many nonlinear models that may be used to describe the growth, but Gompertz has been more recommended by many authors, and showed better adjustment (Pasternak & Shalev, 1994;Hancock et al, 1995;Gous et al, 1999;Sakomura et al, 2005;Neme et al, 2006;Marcato, 2010;Narinc et al, 2010;Finco et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Comparison of the Quality Adjusting of Nonlinear Models for Organs, Carcass and Body Components in Meat-Type (Coturnix Coturnix Coturnix) and Laying-Type (Coturnix Coturnix Japonica) Quail

Grieser

Furlan

Ribeiro

et al. 2017

Rev. Bras. Cienc. Avic.

View full text Add to dashboard Cite

The objective of this study was to evaluate the adjustment quality of nonlinear models to data organs growth, carcass and body components of meat-type (Coturnix coturnix coturnix) and japanese laying-type (Coturnix coturnix japonica) quail. A total of 1350 quails from one to 42 d old were distributed in a completely randomized design, with five replicates each. To determine the organs growth (gut, heart, liver and gizzard), carcass and body components (wing, thigh and drumstick, back and breast), two quails per repetition were slaughtered weekly. The data were evaluated in function of different nonlinear models (Logistical, Brody, Richards, Von Bertalanffy and Gompertz). All models studied adjusted the data, differing in adjustment quality. Brody model showed the best description of gut length to all treatments. For the data gizzard weight, heart, liver and gut, the models that best adjusted, presenting smaller residual mean square and numbers iterations were Gompertz and Logistical. The Gompertz, Logistic and Von Bertalanffy models were the most adequate to describe the thigh and drumstick growth, back and breast, and Gompertz models and Logistic to describe the wing growth and carcass, showing lesser number of iterations to achieve the convergence of date, as well as low residual mean square and squares sums of the regression residuals. The Gompertz model was the most appropriate to describe the organs growth and body components in meat-and laying-type quail when evaluated in growth phase.

show abstract

“…Several nonlinear mathematical models are used to describe the growth and deposition of body nutrients in animals. The models that stand out being Logistic, Brody, von Bertalanffy and Gompertz (MARCATO, 2007).…”

Section: Introductionmentioning

confidence: 99%

Use of mathematical models in the study of bodily growth in GIFT strain Nile tilapia

Amâncio¹,

Silva²,

Fernandes³

et al. 2014

Rev. Ciênc. Agron.

Self Cite

View full text Add to dashboard Cite

-The objective of this study was to evaluate the accuracy of five mathematical models (Gompertz, Logistic, Linear Hyperbolic, Quadratic and Quadratic Logarithmic) to describe the growth curve of GIFT strain Nile tilapia, Oreochromis niloticus, and to characterize the growth trajectory of body parts. To do this, 1,000 fingerlings, with an initial weight of 2.4 g were placed into 20 brick tanks of 2 m 3 each, at a density of 25 fish m -3, for 180 days. The animals were fed daily, using the protein levels and number of meals appropriate to each stage. Every two weeks 20 fish were randomly sampled, submitted to a fasting period of 48 h and then slaughtered by thermal shock, in order to determine the weight of the whole fish, the skin without scales, skinless fillets, heart, liver, gills and gastrointestinal tract. The Gompertz and Logistic models presented the best fit to the growth curve for live weight, fillet and skin, however the Logistic model underestimated the asymptotic weights. Therefore, to describe the growth curve in GIFT strain Nile tilapia, the Gompertz model is suggested. According to the parameters estimated by the Gompertz model, Nile tilapia reach the age for maximum growth of the fillet and skin before that of body weight. Among the organs studied, growth of the gastrointestinal tract and gills takes place earlier than that of the heart and liver.Key words: Oreochromis niloticus. Growth curve. Gompertz. Growth rate.RESUMO -Objetivou-se com o presente estudo avaliar a acurácia de cinco modelos matemáticos (Gompertz, Logístico, Linear Hiperbólico, Quadrático e Quadrático Logarítmico) para descrever a curva de crescimento de tilápia nilótica Oreochromis niloticus da linhagem GIFT e, realizar a caracterização da trajetória do crescimento das partes corporais. Para tal, 1.000 alevinos com peso inicial de 2,4 g foram estocados em 20 tanques de alvenaria de 2 m 3 numa densidade de 25 peixes m -3 , por um período de 180 dias. Os animais foram alimentados diariamente, utilizando níveis de proteína e número de refeições diárias de acordo com cada fase. Quinzenalmente, foram amostrados aleatoriamente 20 peixes, submetidos a um jejum de 48 h e abatidos por choque térmico, para determinação dos pesos do peixe inteiro, peles sem escamas, filés sem pele, coração, fígado, brânquias e trato gastrointestinal. Os modelos Gompertz e Logístico foram os que mais se adequaram ao ajuste da curva de crescimento do peso vivo, do filé e da pele, todavia, o Logístico subestimou os pesos assintóticos. Desta forma, sugere-se o Gompertz para descrever a curva de crescimento de tilápia nilótica da linhagem GIFT. De acordo com os parâmetros estimados pelo modelo Gompertz, a tilápia nilótica atinge a idade de máximo crescimento do filé e pele antes da idade do peso vivo. Dentre os órgãos estudados, o crescimento do trato gastrointestinal e brânquias é mais precoce do que o do coração e fígado. Palavras-chave:Oreochromis niloticus. Curva de crescimento. Gompertz. Taxa de crescimento. *Autor para correspondência 1 Recebido ...

show abstract

Crescimento e deposição de nutrientes nos órgãos de frangos de corte de duas linhagens comerciais

Cited by 31 publications

References 13 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

Comparison of the Quality Adjusting of Nonlinear Models for Organs, Carcass and Body Components in Meat-Type (Coturnix Coturnix Coturnix) and Laying-Type (Coturnix Coturnix Japonica) Quail

Use of mathematical models in the study of bodily growth in GIFT strain Nile tilapia

Contact Info

Product

Resources

About