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Intramuscular Fatty Acids in Meat Could Predict Enteric Methane Production by Fattening Lambs

SIMPLE SUMMARY: The rearing of ruminant animals is an environmental issue related to greenhouse gas emissions, mainly methane. In the current study, a regression analysis was carried out to obtain a regression equation able to successfully estimate methane production of lambs fattened under intensiv...

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Autores principales: Requena Domenech, Francisco, Gómez-Cortés, Pilar, Martínez-Miró, Silvia, de la Fuente, Miguel Ángel, Hernández, Fuensanta, Martínez Marín, Andrés Luis
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8300306/
https://www.ncbi.nlm.nih.gov/pubmed/34359184
http://dx.doi.org/10.3390/ani11072053
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author Requena Domenech, Francisco
Gómez-Cortés, Pilar
Martínez-Miró, Silvia
de la Fuente, Miguel Ángel
Hernández, Fuensanta
Martínez Marín, Andrés Luis
author_facet Requena Domenech, Francisco
Gómez-Cortés, Pilar
Martínez-Miró, Silvia
de la Fuente, Miguel Ángel
Hernández, Fuensanta
Martínez Marín, Andrés Luis
author_sort Requena Domenech, Francisco
collection PubMed
description SIMPLE SUMMARY: The rearing of ruminant animals is an environmental issue related to greenhouse gas emissions, mainly methane. In the current study, a regression analysis was carried out to obtain a regression equation able to successfully estimate methane production of lambs fattened under intensive feeding systems from their meat fatty acid profile and average body weight during the fattening period. The optimized model exhibited high precision, accuracy and reproducibility. It showed a clear relationship between methane emissions and the fatty acid profile of lamb meat. Our predictive model indicates that fatty acid contents in intramuscular fat could be used to establish the environmental footprint of meat from ruminants. ABSTRACT: Methane (CH(4)) emissions pose a serious problem for the environmental sustainability of ruminant production. The aim of the present study was to explore the usefulness of the intramuscular fatty acid (FA) profile to estimate CH(4) production of lambs fattened under intensive feeding systems. A statistical regression analysis of intramuscular FA derived from ruminal metabolism was carried out to assess the best predictive model of CH(4) production (g/d) in lambs fed with different diets. CH(4) was calculated with three distinct equations based on organic matter digestibility (OMD) at maintenance feeding levels. The OMD of the experimental diets was determined in an in vivo digestibility trial by means of the indicator method. Regression models were obtained by stepwise regression analysis. The three optimized models showed high adjusted coefficients of determination (R(2)(adj) = 0.74–0.93) and concordance correlation coefficients (CCC = 0.89–0.98), as well as small root mean square prediction errors (RMSPE = 0.29–0.40 g/d). The best single predictor was vaccenic acid (trans-11 C18:1), a bioactive FA that is formed in the rumen to a different extent depending on dietary composition. Based on our data and further published lamb research, we propose a novel regression model for CH(4) production with excellent outcomes: CH(4) (g/d) = −1.98 (±1.284)–0.87 (±0.231) × trans-11 C18:1 + 0.79 (±0.045) × BW (R(2)(adj) = 0.97; RMSPE = 0.76 g/d; CCC = 0.98). In conclusion, these results indicate that specific intramuscular FA and average BW during fattening could be useful to predict CH(4) production of lambs fed high concentrate diets.
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spelling pubmed-83003062021-07-24 Intramuscular Fatty Acids in Meat Could Predict Enteric Methane Production by Fattening Lambs Requena Domenech, Francisco Gómez-Cortés, Pilar Martínez-Miró, Silvia de la Fuente, Miguel Ángel Hernández, Fuensanta Martínez Marín, Andrés Luis Animals (Basel) Article SIMPLE SUMMARY: The rearing of ruminant animals is an environmental issue related to greenhouse gas emissions, mainly methane. In the current study, a regression analysis was carried out to obtain a regression equation able to successfully estimate methane production of lambs fattened under intensive feeding systems from their meat fatty acid profile and average body weight during the fattening period. The optimized model exhibited high precision, accuracy and reproducibility. It showed a clear relationship between methane emissions and the fatty acid profile of lamb meat. Our predictive model indicates that fatty acid contents in intramuscular fat could be used to establish the environmental footprint of meat from ruminants. ABSTRACT: Methane (CH(4)) emissions pose a serious problem for the environmental sustainability of ruminant production. The aim of the present study was to explore the usefulness of the intramuscular fatty acid (FA) profile to estimate CH(4) production of lambs fattened under intensive feeding systems. A statistical regression analysis of intramuscular FA derived from ruminal metabolism was carried out to assess the best predictive model of CH(4) production (g/d) in lambs fed with different diets. CH(4) was calculated with three distinct equations based on organic matter digestibility (OMD) at maintenance feeding levels. The OMD of the experimental diets was determined in an in vivo digestibility trial by means of the indicator method. Regression models were obtained by stepwise regression analysis. The three optimized models showed high adjusted coefficients of determination (R(2)(adj) = 0.74–0.93) and concordance correlation coefficients (CCC = 0.89–0.98), as well as small root mean square prediction errors (RMSPE = 0.29–0.40 g/d). The best single predictor was vaccenic acid (trans-11 C18:1), a bioactive FA that is formed in the rumen to a different extent depending on dietary composition. Based on our data and further published lamb research, we propose a novel regression model for CH(4) production with excellent outcomes: CH(4) (g/d) = −1.98 (±1.284)–0.87 (±0.231) × trans-11 C18:1 + 0.79 (±0.045) × BW (R(2)(adj) = 0.97; RMSPE = 0.76 g/d; CCC = 0.98). In conclusion, these results indicate that specific intramuscular FA and average BW during fattening could be useful to predict CH(4) production of lambs fed high concentrate diets. MDPI 2021-07-09 /pmc/articles/PMC8300306/ /pubmed/34359184 http://dx.doi.org/10.3390/ani11072053 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Requena Domenech, Francisco
Gómez-Cortés, Pilar
Martínez-Miró, Silvia
de la Fuente, Miguel Ángel
Hernández, Fuensanta
Martínez Marín, Andrés Luis
Intramuscular Fatty Acids in Meat Could Predict Enteric Methane Production by Fattening Lambs
title Intramuscular Fatty Acids in Meat Could Predict Enteric Methane Production by Fattening Lambs
title_full Intramuscular Fatty Acids in Meat Could Predict Enteric Methane Production by Fattening Lambs
title_fullStr Intramuscular Fatty Acids in Meat Could Predict Enteric Methane Production by Fattening Lambs
title_full_unstemmed Intramuscular Fatty Acids in Meat Could Predict Enteric Methane Production by Fattening Lambs
title_short Intramuscular Fatty Acids in Meat Could Predict Enteric Methane Production by Fattening Lambs
title_sort intramuscular fatty acids in meat could predict enteric methane production by fattening lambs
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8300306/
https://www.ncbi.nlm.nih.gov/pubmed/34359184
http://dx.doi.org/10.3390/ani11072053
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