Prediction of body chemical composition of Morada Nova ram lambs using the composition of ribs section between 9th and 11th

Autores

  • Marcus Roberto Góes Ferreira Costa Instituto Federal de Educação
  • Elzânia Sales Pereira Universidade Federal do Ceará
  • Andréa Pereira Pinto Universidade Federal do Ceará
  • Aderbal Marcos de Azevêdo Silva Universidade Federal de Campina Grande
  • Ariosvaldo Nunes de Medeiros Universidade Federal da Paraíba
  • Ivone Yurika Mizubuti Universidade Estadual de Londrina
  • Edson Luiz de Azambuja Ribeiro Universidade Estadual de Londrina
  • Ana Cláudia Nascimento Campos Universidade Federal do Ceará
  • Carla Renata Figueiredo Gadelha Universidade Federal do Ceará
  • Ronaldo Lopes Oliveira Universidade Federal da Bahia

DOI:

https://doi.org/10.5433/1679-0359.2014v35n4p2019

Palavras-chave:

HH section, Nutritional requirements, Sheep.

Resumo

The determination of the chemical composition of the body and carcass is important in nutritional and growth regulation studies. The purpose of this study was to develop equations to predict the chemical composition of the body and carcass using the chemical composition of a section from 9-11th rib in Morada Nova lambs. Forty-eight Morada Nova lambs with an initial weight of 12.05 ± 1.81 kg, were used. Eight animals were slaughtered at the beginning of the trial as a reference group in order to estimate the initial empty body weight and body composition. The remaining animals were assigned to a randomized block design with eight replications per block and five diets with increasing metabolizable energy contents (0.96, 1.28, 1.72, 2.18, and 2.62 Mcal/kg of dry matter). Animals were slaughtered when the mean of body weight of the group reached 25 kg. Body chemical composition was determined by evaluating the composition of the right half of the carcass, as well as, by using a sample between the 9–11th ribs (the HH section) from the left half of the carcass. According to Pearson’s correlation coefficient, the use of the HH section precisely predicted the percentages of protein (r = 0.89), ether extract (r = 0.81) and minerals (r = 0.83). Equations were developed to estimate the percentage of protein, ether extract, ash in the carcass from the following components in the HH section: %CP in the carcass = –21.05 + 3.052*%CP in the HH section (r² = 0.83); %EE in the carcass = –6.443+2.879*%EE in the HH section (r² = 0.76); %Ash = 4.52-0.362*%Ash in the HH section (r² = 0.15); %Water = 7.55+0.878*%Water in HH section (r² = 0.85). The cut from the 9-11th ribs satisfactorily predicted the protein and ether extract contents in the empty body, with values of r = 0.84 and 0.78, respectively. The crude protein and ether extract contents of the empty body can be satisfactorily estimated from chemical composition of the HH section; however, more information must be generated to obtain more reliably applicable equations.

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Biografia do Autor

Marcus Roberto Góes Ferreira Costa, Instituto Federal de Educação

Prof. Dr., Instituto Federal de Educação, Ciência e Tecnologia do Ceará, CE, Brasil.

Elzânia Sales Pereira, Universidade Federal do Ceará

Profª Drª, Deptº de Zootecnia, Universidade Federal do Ceará, UFC, Ceará, CE, Brasil. Bolsista de Produtividade do CNPq.

Andréa Pereira Pinto, Universidade Federal do Ceará

Profª Drª, Deptº de Zootecnia da UFC, Ceará, CE, Brasil.

Aderbal Marcos de Azevêdo Silva, Universidade Federal de Campina Grande

Prof. Dr., Unidade Acadêmica de Medicina Veterinária, Universidade Federal de Campina Grande, UFCG, Campina Grande, PB, Brasil. Bolsista de Produtividade do CNPq.

Ariosvaldo Nunes de Medeiros, Universidade Federal da Paraíba

Prof. Dr., Deptº de Zootecnia, Universidade Federal da Paraíba, UFPB, PB, Brasil.

Ivone Yurika Mizubuti, Universidade Estadual de Londrina

Profª Drª, Deptº de Zootecnia, Universidade Estadual de Londrina, UEL, Londrina, PR, Brasil. Bolsista de Produtividade do CNPq.

Edson Luiz de Azambuja Ribeiro, Universidade Estadual de Londrina

Prof. Dr., Deptº de Zootecnia, Universidade Estadual de Londrina, UEL, Londrina, PR, Brasil. Bolsista de Produtividade do CNPq.

Ana Cláudia Nascimento Campos, Universidade Federal do Ceará

Profª Drª, Deptº de Zootecnia da UFC, Ceará, CE, Brasil.

Carla Renata Figueiredo Gadelha, Universidade Federal do Ceará

Profª Drª, Deptº de Zootecnia da UFC, Ceará, CE, Brasil.

Ronaldo Lopes Oliveira, Universidade Federal da Bahia

Prof. Dr., Deptº de Zootecnia, , UFBA, Salvador, BA, Brasil.

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Publicado

2014-08-27

Como Citar

Costa, M. R. G. F., Pereira, E. S., Pinto, A. P., Silva, A. M. de A., Medeiros, A. N. de, Mizubuti, I. Y., Ribeiro, E. L. de A., Campos, A. C. N., Gadelha, C. R. F., & Oliveira, R. L. (2014). Prediction of body chemical composition of Morada Nova ram lambs using the composition of ribs section between 9th and 11th. Semina: Ciências Agrárias, 35(4), 2019–2032. https://doi.org/10.5433/1679-0359.2014v35n4p2019

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