Changes in herbage mass and time of herbage allocation modify nutritional and metabolic status of dairy cows

ABSTRACT In temperate milk production systems, it is important to study the effect of grazing strategies in both the quantity and quality of the diet, resulting in potential impacts on animal metabolism. The aim was to evaluate the effect of timing of herbage allocation and herbage mass on blood ind...

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Autores principales:	Morales,Álvaro, Godoy,Marisol, Beltrán,Ignacio, Muller,Ananda, Balocchi,Oscar, Pulido,Rubén
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2018
Materias:	Autumn pasture dairy cows grazing system metabolism pasture management.
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392018000300409
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spelling	oai:scielo:S0718-583920180003004092018-11-14Changes in herbage mass and time of herbage allocation modify nutritional and metabolic status of dairy cowsMorales,ÁlvaroGodoy,MarisolBeltrán,IgnacioMuller,AnandaBalocchi,OscarPulido,Rubén Autumn pasture dairy cows grazing system metabolism pasture management. ABSTRACT In temperate milk production systems, it is important to study the effect of grazing strategies in both the quantity and quality of the diet, resulting in potential impacts on animal metabolism. The aim was to evaluate the effect of timing of herbage allocation and herbage mass on blood indicators. Forty Holstein-Friesian cows were grouped according to milk production (24.7 ± 2.8 kg cow-1), body weight (580.6 ± 51.7 kg) and days in milk (74 ± 17.1 d). The groups were randomly allocated to one of four treatments: 1) L-AM, access to new herbage allocation after morning milking with herbage mass of 2000 kg DM ha-1; 2) L-PM; access to new herbage allocation after afternoon milking with herbage mass of 2000 kg DM ha-1; 3) H-AM; access to new herbage allocation after morning milking with herbage mass of 3000 kg DM ha-1; 4) H-PM; access to new herbage allocation after afternoon milking with herbage mass of 3000 kg DM ha-1. Milk production was only different for H-PM in 1.1 kg higher than L-PM. Urea in milk was affected by treatments, being 22% higher for L-AM than other treatments. ß-Hydroxybutyrate and blood urea concentrations were 47% and 30% higher, respectively, for AM compared to PM treatments. Plasma albumin concentration was lower for H-PM compared to other treatments at week 3 of blood sampling. PM treatments modify the herbage composition and animal metabolism, while combining it with a high herbage mass impacts positively in production and milk composition.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=S0718-58392018000300409en10.4067/S0718-58392018000300409
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Autumn pasture dairy cows grazing system metabolism pasture management.
spellingShingle	Autumn pasture dairy cows grazing system metabolism pasture management. Morales,Álvaro Godoy,Marisol Beltrán,Ignacio Muller,Ananda Balocchi,Oscar Pulido,Rubén Changes in herbage mass and time of herbage allocation modify nutritional and metabolic status of dairy cows
description	ABSTRACT In temperate milk production systems, it is important to study the effect of grazing strategies in both the quantity and quality of the diet, resulting in potential impacts on animal metabolism. The aim was to evaluate the effect of timing of herbage allocation and herbage mass on blood indicators. Forty Holstein-Friesian cows were grouped according to milk production (24.7 ± 2.8 kg cow-1), body weight (580.6 ± 51.7 kg) and days in milk (74 ± 17.1 d). The groups were randomly allocated to one of four treatments: 1) L-AM, access to new herbage allocation after morning milking with herbage mass of 2000 kg DM ha-1; 2) L-PM; access to new herbage allocation after afternoon milking with herbage mass of 2000 kg DM ha-1; 3) H-AM; access to new herbage allocation after morning milking with herbage mass of 3000 kg DM ha-1; 4) H-PM; access to new herbage allocation after afternoon milking with herbage mass of 3000 kg DM ha-1. Milk production was only different for H-PM in 1.1 kg higher than L-PM. Urea in milk was affected by treatments, being 22% higher for L-AM than other treatments. ß-Hydroxybutyrate and blood urea concentrations were 47% and 30% higher, respectively, for AM compared to PM treatments. Plasma albumin concentration was lower for H-PM compared to other treatments at week 3 of blood sampling. PM treatments modify the herbage composition and animal metabolism, while combining it with a high herbage mass impacts positively in production and milk composition.
author	Morales,Álvaro Godoy,Marisol Beltrán,Ignacio Muller,Ananda Balocchi,Oscar Pulido,Rubén
author_facet	Morales,Álvaro Godoy,Marisol Beltrán,Ignacio Muller,Ananda Balocchi,Oscar Pulido,Rubén
author_sort	Morales,Álvaro
title	Changes in herbage mass and time of herbage allocation modify nutritional and metabolic status of dairy cows
title_short	Changes in herbage mass and time of herbage allocation modify nutritional and metabolic status of dairy cows
title_full	Changes in herbage mass and time of herbage allocation modify nutritional and metabolic status of dairy cows
title_fullStr	Changes in herbage mass and time of herbage allocation modify nutritional and metabolic status of dairy cows
title_full_unstemmed	Changes in herbage mass and time of herbage allocation modify nutritional and metabolic status of dairy cows
title_sort	changes in herbage mass and time of herbage allocation modify nutritional and metabolic status of dairy cows
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392018000300409
work_keys_str_mv	AT moralesalvaro changesinherbagemassandtimeofherbageallocationmodifynutritionalandmetabolicstatusofdairycows AT godoymarisol changesinherbagemassandtimeofherbageallocationmodifynutritionalandmetabolicstatusofdairycows AT beltranignacio changesinherbagemassandtimeofherbageallocationmodifynutritionalandmetabolicstatusofdairycows AT mullerananda changesinherbagemassandtimeofherbageallocationmodifynutritionalandmetabolicstatusofdairycows AT balocchioscar changesinherbagemassandtimeofherbageallocationmodifynutritionalandmetabolicstatusofdairycows AT pulidoruben changesinherbagemassandtimeofherbageallocationmodifynutritionalandmetabolicstatusofdairycows
_version_	1714205380834230272

Changes in herbage mass and time of herbage allocation modify nutritional and metabolic status of dairy cows

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