Phenotypic association among performance, feed efficiency and methane emission traits in Nellore cattle.

Enteric methane (CH4) emissions are a natural process in ruminants and can result in up to 12% of energy losses. Hence, decreasing enteric CH4 production constitutes an important step towards improving the feed efficiency of Brazilian cattle herds. The aim of this study was to evaluate the relations...

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Autores principales:	Leandro Sannomiya Sakamoto, Luana Lelis Souza, Sarah Bernardes Gianvecchio, Matheus Henrique Vargas de Oliveira, Josineudson Augusto Ii de Vasconcelos Silva, Roberta Carrilho Canesin, Renata Helena Branco, Melissa Baccan, Alexandre Berndt, Lucia Galvão de Albuquerque, Maria Eugênia Zerlotti Mercadante
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b3a26085269645e6b2cf1b7c8b3ce89f
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spelling	oai:doaj.org-article:b3a26085269645e6b2cf1b7c8b3ce89f2021-12-02T20:07:54ZPhenotypic association among performance, feed efficiency and methane emission traits in Nellore cattle.1932-620310.1371/journal.pone.0257964https://doaj.org/article/b3a26085269645e6b2cf1b7c8b3ce89f2021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0257964https://doaj.org/toc/1932-6203Enteric methane (CH4) emissions are a natural process in ruminants and can result in up to 12% of energy losses. Hence, decreasing enteric CH4 production constitutes an important step towards improving the feed efficiency of Brazilian cattle herds. The aim of this study was to evaluate the relationship between performance, residual feed intake (RFI), and enteric CH4 emission in growing Nellore cattle (Bos indicus). Performance, RFI and CH4 emission data were obtained from 489 animals participating in selection programs (mid-test age and body weight: 414±159 days and 356±135 kg, respectively) that were evaluated in 12 performance tests carried out in individual pens (n = 95) or collective paddocks (n = 394) equipped with electronic feed bunks. The sulfur hexafluoride tracer gas technique was used to measure daily CH4 emissions. The following variables were estimated: CH4 emission rate (g/day), residual methane emission and emission expressed per mid-test body weight, metabolic body weight, dry matter intake (CH4/DMI), average daily gain, and ingested gross energy (CH4/GE). Animals classified as negative RFI (RFI<0), i.e., more efficient animals, consumed less dry matter (P <0.0001) and emitted less g CH4/day (P = 0.0022) than positive RFI animals (RFI>0). Nonetheless, more efficient animals emitted more CH4/DMI and CH4/GE (P < 0.0001), suggesting that the difference in daily intake between animals is a determinant factor for the difference in daily enteric CH4 emissions. In addition, animals classified as negative RFI emitted less CH4 per kg mid-test weight and metabolic weight (P = 0.0096 and P = 0.0033, respectively), i.e., most efficient animals could emit less CH4 per kg of carcass. In conclusion, more efficient animals produced less methane when expressed as g/day and per kg mid-test weight than less efficient animals, suggesting lower emissions per kg of carcass produced. However, it is not possible to state that feed efficiency has a direct effect on enteric CH4 emissions since emissions per kg of consumed dry matter and the percentage of gross energy lost as CH4 are higher for more efficient animals.Leandro Sannomiya SakamotoLuana Lelis SouzaSarah Bernardes GianvecchioMatheus Henrique Vargas de OliveiraJosineudson Augusto Ii de Vasconcelos SilvaRoberta Carrilho CanesinRenata Helena BrancoMelissa BaccanAlexandre BerndtLucia Galvão de AlbuquerqueMaria Eugênia Zerlotti MercadantePublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 10, p e0257964 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Leandro Sannomiya Sakamoto Luana Lelis Souza Sarah Bernardes Gianvecchio Matheus Henrique Vargas de Oliveira Josineudson Augusto Ii de Vasconcelos Silva Roberta Carrilho Canesin Renata Helena Branco Melissa Baccan Alexandre Berndt Lucia Galvão de Albuquerque Maria Eugênia Zerlotti Mercadante Phenotypic association among performance, feed efficiency and methane emission traits in Nellore cattle.
description	Enteric methane (CH4) emissions are a natural process in ruminants and can result in up to 12% of energy losses. Hence, decreasing enteric CH4 production constitutes an important step towards improving the feed efficiency of Brazilian cattle herds. The aim of this study was to evaluate the relationship between performance, residual feed intake (RFI), and enteric CH4 emission in growing Nellore cattle (Bos indicus). Performance, RFI and CH4 emission data were obtained from 489 animals participating in selection programs (mid-test age and body weight: 414±159 days and 356±135 kg, respectively) that were evaluated in 12 performance tests carried out in individual pens (n = 95) or collective paddocks (n = 394) equipped with electronic feed bunks. The sulfur hexafluoride tracer gas technique was used to measure daily CH4 emissions. The following variables were estimated: CH4 emission rate (g/day), residual methane emission and emission expressed per mid-test body weight, metabolic body weight, dry matter intake (CH4/DMI), average daily gain, and ingested gross energy (CH4/GE). Animals classified as negative RFI (RFI<0), i.e., more efficient animals, consumed less dry matter (P <0.0001) and emitted less g CH4/day (P = 0.0022) than positive RFI animals (RFI>0). Nonetheless, more efficient animals emitted more CH4/DMI and CH4/GE (P < 0.0001), suggesting that the difference in daily intake between animals is a determinant factor for the difference in daily enteric CH4 emissions. In addition, animals classified as negative RFI emitted less CH4 per kg mid-test weight and metabolic weight (P = 0.0096 and P = 0.0033, respectively), i.e., most efficient animals could emit less CH4 per kg of carcass. In conclusion, more efficient animals produced less methane when expressed as g/day and per kg mid-test weight than less efficient animals, suggesting lower emissions per kg of carcass produced. However, it is not possible to state that feed efficiency has a direct effect on enteric CH4 emissions since emissions per kg of consumed dry matter and the percentage of gross energy lost as CH4 are higher for more efficient animals.
format	article
author	Leandro Sannomiya Sakamoto Luana Lelis Souza Sarah Bernardes Gianvecchio Matheus Henrique Vargas de Oliveira Josineudson Augusto Ii de Vasconcelos Silva Roberta Carrilho Canesin Renata Helena Branco Melissa Baccan Alexandre Berndt Lucia Galvão de Albuquerque Maria Eugênia Zerlotti Mercadante
author_facet	Leandro Sannomiya Sakamoto Luana Lelis Souza Sarah Bernardes Gianvecchio Matheus Henrique Vargas de Oliveira Josineudson Augusto Ii de Vasconcelos Silva Roberta Carrilho Canesin Renata Helena Branco Melissa Baccan Alexandre Berndt Lucia Galvão de Albuquerque Maria Eugênia Zerlotti Mercadante
author_sort	Leandro Sannomiya Sakamoto
title	Phenotypic association among performance, feed efficiency and methane emission traits in Nellore cattle.
title_short	Phenotypic association among performance, feed efficiency and methane emission traits in Nellore cattle.
title_full	Phenotypic association among performance, feed efficiency and methane emission traits in Nellore cattle.
title_fullStr	Phenotypic association among performance, feed efficiency and methane emission traits in Nellore cattle.
title_full_unstemmed	Phenotypic association among performance, feed efficiency and methane emission traits in Nellore cattle.
title_sort	phenotypic association among performance, feed efficiency and methane emission traits in nellore cattle.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/b3a26085269645e6b2cf1b7c8b3ce89f
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Phenotypic association among performance, feed efficiency and methane emission traits in Nellore cattle.

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