PARÂMETROS CINÉTICOS DE PRODUÇÃO DE GÁS IN VITRO DE DIFERENTES GENÓTIPOS DE CAPIM-ELEFANTE (Pennisetum purpureum SCHUM.)

Authors

  • Janderson Aguiar Rodrigues Doutorando no Programa de Pós Graduação em Ciência Animal pela Universidade Federal de Mato Grosso/Campus Cuiabá, Cuiabá-MT, Brasil.
  • Joadil Gonçalves de Abreu Professor, Doutor, Departamento de Zootecnia e Extensão Rural, Universidade Federal de Mato Grosso/Campus Cuiabá, Cuiabá-MT, Brasil.
  • Matheus Lima Correa Abreu Pós-doutorando, Universidade Estadual Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes-RJ, Brasil. https://orcid.org/0000-0002-3533-7338
  • Lucas Matheus Barros Assis Mestrando, Programa de Pós Graduação em Ciência Animal, Universidade Federal de Mato Grosso/Campus Cuiabá, Cuiabá-MT, Brasil. https://orcid.org/0000-0002-5696-3389
  • Natalia Tousube da Rocha Graduanda em Zootecnia, Instituto Federal de Educação, Ciência e Tecnologia de Mato Grosso/Campus São Vicente, Campo Verde-MT, Brasil
  • Vicente Batista de Souza Júnior Mestrando no Programa de Pós Graduação em Zootecnia pela Universidade Federal de Goiás/Campus Samambaia, Goiânia-GO, Brasil. https://orcid.org/0000-0001-7835-1255
  • Maxuel Fellipe Nunes Xavier Graduando em Agronomia no Instituto Federal de Educação, Ciência e Tecnologia de Mato Grosso/Campus São Vicente, Centro de Referência de Campo Verde, Campo Verde-MT, Brasil. https://orcid.org/0000-0003-0822-4992

DOI:

https://doi.org/10.35172/rvz.2021.v28.581

Keywords:

fodder; gas production; mathematical models.

Abstract

The aim of this study was to evaluate mathematical models comparing the kinetic parameters in the production of in vitro gas in different genotypes of elephant grass The design was entirely randomized with three repetitions with five treatments that were the elephant grass genotypes (BRS Canará, Napier, Vruckwona, Cameroon and CNPGL 93-41-1) with age of re-growth at 45 days. The ruminal inoculum was obtained from two whole male Nelores oxen kept in pickets formed by Urochloa brizantha cv. Marandu in the dry period of the year. The incubations were consecutive, measuring the gas production pressure readings in 2; 4; 6; 8; 10; 12; 19; 24; 36; 48; 60; 72; 84 and 96 hours. The determination of gas production kinetics was tested in two non-linear models: Monomolecular and Logistic. Where the final volume (Vf/mL), average gas production rate (k/h-1), production lage time (Lag/h) and average digestion time (MDT/h) were estimated. The models tested, the Logistic with latency showed better fit for all crop profiles. The BRS Canará and CNPGL 93-41-1 and Wrockwona cultivars present estimates of kinetic parameters of gas production similar and better than those of Cameroon and Napier cultivars.

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Published

2021-11-16

How to Cite

1.
Aguiar Rodrigues J, Gonçalves de Abreu J, Lima Correa Abreu M, Matheus Barros Assis L, Tousube da Rocha N, Batista de Souza Júnior V, Fellipe Nunes Xavier M. PARÂMETROS CINÉTICOS DE PRODUÇÃO DE GÁS IN VITRO DE DIFERENTES GENÓTIPOS DE CAPIM-ELEFANTE (Pennisetum purpureum SCHUM.). RVZ [Internet]. 2021 Nov. 16 [cited 2024 May 15];28:1-8. Available from: https://rvz.emnuvens.com.br/rvz/article/view/581

Issue

Vol. 28 (2021)

Section

Original Articles

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