Effect of daily herbage allowance restriction on pasture characteristics and milk production by grazing dairy cows in spring

Abstract The cumulative effects of daily herbage allowance (DHA) restriction on pasture characteristics and the sustainability of pasture-based dairy systems were evaluated. Sixty-four dairy cows were randomly assigned to one of two grazing treatments (20 and 30 kg DM cow-1 day-1). Milk yield and pr...

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Autores principales:	Merino,Verónica, Balocchi,Oscar, Pulido,Rubén
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal 2018
Materias:	Dairy systems grazing management milk yield pasture utilization sustainability
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202018000100021
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spelling	oai:scielo:S0718-162020180001000212018-05-18Effect of daily herbage allowance restriction on pasture characteristics and milk production by grazing dairy cows in springMerino,VerónicaBalocchi,OscarPulido,Rubén Dairy systems grazing management milk yield pasture utilization sustainability Abstract The cumulative effects of daily herbage allowance (DHA) restriction on pasture characteristics and the sustainability of pasture-based dairy systems were evaluated. Sixty-four dairy cows were randomly assigned to one of two grazing treatments (20 and 30 kg DM cow-1 day-1). Milk yield and pre- and post-grazing herbage mass were recorded for every grazing event. Botanical and chemical compositions of the pasture were evaluated. Low DHA increased the stocking rate by 0.7 cows ha-1 and consequently increased grazing efficiency from 41 to 47%. Daily herbage allowance restriction did not affect pasture characteristics or milk production per cow, but DHA restriction increased milk production per hectare (+27%). The results suggest that restriction on daily herbage allowance ensures a higher level of herbage utilization and milk output per ha than high DHA, without affecting pasture characteristics. Therefore, DHA might be a useful grazing management tool for improving the profitability and sustainability of grazing-based dairy systems.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería ForestalCiencia e investigación agraria v.45 n.1 20182018-04-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202018000100021en10.7764/rcia.v45i1.1841
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Dairy systems grazing management milk yield pasture utilization sustainability
spellingShingle	Dairy systems grazing management milk yield pasture utilization sustainability Merino,Verónica Balocchi,Oscar Pulido,Rubén Effect of daily herbage allowance restriction on pasture characteristics and milk production by grazing dairy cows in spring
description	Abstract The cumulative effects of daily herbage allowance (DHA) restriction on pasture characteristics and the sustainability of pasture-based dairy systems were evaluated. Sixty-four dairy cows were randomly assigned to one of two grazing treatments (20 and 30 kg DM cow-1 day-1). Milk yield and pre- and post-grazing herbage mass were recorded for every grazing event. Botanical and chemical compositions of the pasture were evaluated. Low DHA increased the stocking rate by 0.7 cows ha-1 and consequently increased grazing efficiency from 41 to 47%. Daily herbage allowance restriction did not affect pasture characteristics or milk production per cow, but DHA restriction increased milk production per hectare (+27%). The results suggest that restriction on daily herbage allowance ensures a higher level of herbage utilization and milk output per ha than high DHA, without affecting pasture characteristics. Therefore, DHA might be a useful grazing management tool for improving the profitability and sustainability of grazing-based dairy systems.
author	Merino,Verónica Balocchi,Oscar Pulido,Rubén
author_facet	Merino,Verónica Balocchi,Oscar Pulido,Rubén
author_sort	Merino,Verónica
title	Effect of daily herbage allowance restriction on pasture characteristics and milk production by grazing dairy cows in spring
title_short	Effect of daily herbage allowance restriction on pasture characteristics and milk production by grazing dairy cows in spring
title_full	Effect of daily herbage allowance restriction on pasture characteristics and milk production by grazing dairy cows in spring
title_fullStr	Effect of daily herbage allowance restriction on pasture characteristics and milk production by grazing dairy cows in spring
title_full_unstemmed	Effect of daily herbage allowance restriction on pasture characteristics and milk production by grazing dairy cows in spring
title_sort	effect of daily herbage allowance restriction on pasture characteristics and milk production by grazing dairy cows in spring
publisher	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202018000100021
work_keys_str_mv	AT merinoveronica effectofdailyherbageallowancerestrictiononpasturecharacteristicsandmilkproductionbygrazingdairycowsinspring AT balocchioscar effectofdailyherbageallowancerestrictiononpasturecharacteristicsandmilkproductionbygrazingdairycowsinspring AT pulidoruben effectofdailyherbageallowancerestrictiononpasturecharacteristicsandmilkproductionbygrazingdairycowsinspring
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Effect of daily herbage allowance restriction on pasture characteristics and milk production by grazing dairy cows in spring

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