Effects of dietary concéntrate supplementation on enteric methane emissions and performance of late lactation dairy cows

ABSTRACT Dietary supplementation with concentrates is regarded as an effective strategy to decrease the intensity of methane (CH4) emissions, although it has rarely been evaluated in late lactation dairy cows. The aim of the present study was to investigate the effects of two levels of dietary conce...

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Autores principales:	Muñoz,Camila, Herrera,Denisse, Hube,Sara, Morales,Jorge, Ungerfeld,Emilio M.
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2018
Materias:	Concentrate supplementation hay methane pasture ruminant SF6.
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392018000300429
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spelling	oai:scielo:S0718-583920180003004292018-11-14Effects of dietary concéntrate supplementation on enteric methane emissions and performance of late lactation dairy cowsMuñoz,CamilaHerrera,DenisseHube,SaraMorales,JorgeUngerfeld,Emilio M. Concentrate supplementation hay methane pasture ruminant SF6. ABSTRACT Dietary supplementation with concentrates is regarded as an effective strategy to decrease the intensity of methane (CH4) emissions, although it has rarely been evaluated in late lactation dairy cows. The aim of the present study was to investigate the effects of two levels of dietary concentrate supplementation on CH4 emissions and milk production and composition of dairy cows in late lactation. The study was conducted using 24 multiparous Holstein Friesian cows in late lactation (253 ± 18 d in milk), and had a duration of 3 wk, including 2 wk of adaptation to the diet and 1 wk of measurements. Treatments consisted of two levels of concentrate supplementation (4 vs. 8 kg d-1 cow-1; as-fed) offered daily in two equal rations during milking. In addition, diets included 2 kg DM grazed grass and 8 kg as-fed of grass hay. In week 3 of the study, CH4 emissions were measured for 7 consecutive days using the sulfur hexafluoride tracer technique. Average total DM intakes for the cows fed the 4 and 8 kg concentrate treatments were 12.3 and 15.6 kg DM, respectively. Treatments had no effect on milk yield, milk fat, or milk lactose concentrations. Milk protein concentration tended to increase in cows offered 8 kg of concentrate. Higher concentrate intake tended to increase cow body mass gain, but not condition score change. The 8 kg treatment increased total CH4 emissions (g d-1) by 10.7%, whereas CH4 yield (g kg-1 DM intake) was decreased by 12.7%. Methane intensity (g kg-1 milk yield) was unaffected by treatments. Dietary concentrate supplementation for late lactation cows is ineffective in mitigating CH4 emission intensity, because animals do not respond with an increase in milk production.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.78 n.3 20182018-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392018000300429en10.4067/S0718-58392018000300429
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Concentrate supplementation hay methane pasture ruminant SF6.
spellingShingle	Concentrate supplementation hay methane pasture ruminant SF6. Muñoz,Camila Herrera,Denisse Hube,Sara Morales,Jorge Ungerfeld,Emilio M. Effects of dietary concéntrate supplementation on enteric methane emissions and performance of late lactation dairy cows
description	ABSTRACT Dietary supplementation with concentrates is regarded as an effective strategy to decrease the intensity of methane (CH4) emissions, although it has rarely been evaluated in late lactation dairy cows. The aim of the present study was to investigate the effects of two levels of dietary concentrate supplementation on CH4 emissions and milk production and composition of dairy cows in late lactation. The study was conducted using 24 multiparous Holstein Friesian cows in late lactation (253 ± 18 d in milk), and had a duration of 3 wk, including 2 wk of adaptation to the diet and 1 wk of measurements. Treatments consisted of two levels of concentrate supplementation (4 vs. 8 kg d-1 cow-1; as-fed) offered daily in two equal rations during milking. In addition, diets included 2 kg DM grazed grass and 8 kg as-fed of grass hay. In week 3 of the study, CH4 emissions were measured for 7 consecutive days using the sulfur hexafluoride tracer technique. Average total DM intakes for the cows fed the 4 and 8 kg concentrate treatments were 12.3 and 15.6 kg DM, respectively. Treatments had no effect on milk yield, milk fat, or milk lactose concentrations. Milk protein concentration tended to increase in cows offered 8 kg of concentrate. Higher concentrate intake tended to increase cow body mass gain, but not condition score change. The 8 kg treatment increased total CH4 emissions (g d-1) by 10.7%, whereas CH4 yield (g kg-1 DM intake) was decreased by 12.7%. Methane intensity (g kg-1 milk yield) was unaffected by treatments. Dietary concentrate supplementation for late lactation cows is ineffective in mitigating CH4 emission intensity, because animals do not respond with an increase in milk production.
author	Muñoz,Camila Herrera,Denisse Hube,Sara Morales,Jorge Ungerfeld,Emilio M.
author_facet	Muñoz,Camila Herrera,Denisse Hube,Sara Morales,Jorge Ungerfeld,Emilio M.
author_sort	Muñoz,Camila
title	Effects of dietary concéntrate supplementation on enteric methane emissions and performance of late lactation dairy cows
title_short	Effects of dietary concéntrate supplementation on enteric methane emissions and performance of late lactation dairy cows
title_full	Effects of dietary concéntrate supplementation on enteric methane emissions and performance of late lactation dairy cows
title_fullStr	Effects of dietary concéntrate supplementation on enteric methane emissions and performance of late lactation dairy cows
title_full_unstemmed	Effects of dietary concéntrate supplementation on enteric methane emissions and performance of late lactation dairy cows
title_sort	effects of dietary concéntrate supplementation on enteric methane emissions and performance of late lactation dairy cows
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392018000300429
work_keys_str_mv	AT munozcamila effectsofdietaryconcentratesupplementationonentericmethaneemissionsandperformanceoflatelactationdairycows AT herreradenisse effectsofdietaryconcentratesupplementationonentericmethaneemissionsandperformanceoflatelactationdairycows AT hubesara effectsofdietaryconcentratesupplementationonentericmethaneemissionsandperformanceoflatelactationdairycows AT moralesjorge effectsofdietaryconcentratesupplementationonentericmethaneemissionsandperformanceoflatelactationdairycows AT ungerfeldemiliom effectsofdietaryconcentratesupplementationonentericmethaneemissionsandperformanceoflatelactationdairycows
_version_	1714205381156143104

Effects of dietary concéntrate supplementation on enteric methane emissions and performance of late lactation dairy cows

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