Productive and metabolic response to two levels of corn silage supplementation in grazing dairy cows in early lactation during autumn

Corn (Zea mays L.) silage (CS) is a nutritious food that can be used as a supplement in dairy cows. The aim of this study was to determine the effect of supplementation with two amounts of CS on milk production and composition, live weight and body condition, as well as on some blood indicators for...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Morales,Álvaro, Grob,Daniela, Balocchi,Oscar, Pulido,Rubén
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2014
Materias:	Autumn pasture corn silage dairy cows grazing low herbage mass pasture
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392014000200012
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0718-58392014000200012
record_format	dspace
spelling	oai:scielo:S0718-583920140002000122018-10-01Productive and metabolic response to two levels of corn silage supplementation in grazing dairy cows in early lactation during autumnMorales,ÁlvaroGrob,DanielaBalocchi,OscarPulido,Rubén Autumn pasture corn silage dairy cows grazing low herbage mass pasture Corn (Zea mays L.) silage (CS) is a nutritious food that can be used as a supplement in dairy cows. The aim of this study was to determine the effect of supplementation with two amounts of CS on milk production and composition, live weight and body condition, as well as on some blood indicators for energy and protein metabolism on dairy cows in early lactation and grazing low mass pasture during autumn. The study was carried out in 40 Holstein Friesian cows over 57 d. Prior to experimental treatment, milk production and days of lactation averaged 24.1 ± 2.8 kg d-1 and 62 ± 14 d, respectively. The dietary treatments consisted of two levels of supplementation with CS; 4.5 and 9 kg DM cow-1 d-1 (treatments LCS and HCS, respectively). Additionally, all the cows received a pasture allowance of 21 and 3 kg DM cow-1 d-1 of concentrate. Milk composition was determined using infrared spectrophotometry, while blood indicators were obtained using an autoanalyzer. There were not differences between treatments regarding milk production or composition, total DM or energy intake. Herbage and protein intake was higher for LCS treatment (P < 0.001). Increasing supplementation decreased (P < 0.001) daily weight gain but did not affect body condition. Plasma concentrations of βOH-butyrate were lower (P = 0.038) for the LCS treatment; while urea concentrations were higher (P = 0.003), with no differences for non-esterified fatty acids (NEFA) concentrations. Supplementation with 4.5 kg d-1 of CS was sufficient to meet the production requirements of the cows.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.74 n.2 20142014-04-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392014000200012en10.4067/S0718-58392014000200012
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Autumn pasture corn silage dairy cows grazing low herbage mass pasture
spellingShingle	Autumn pasture corn silage dairy cows grazing low herbage mass pasture Morales,Álvaro Grob,Daniela Balocchi,Oscar Pulido,Rubén Productive and metabolic response to two levels of corn silage supplementation in grazing dairy cows in early lactation during autumn
description	Corn (Zea mays L.) silage (CS) is a nutritious food that can be used as a supplement in dairy cows. The aim of this study was to determine the effect of supplementation with two amounts of CS on milk production and composition, live weight and body condition, as well as on some blood indicators for energy and protein metabolism on dairy cows in early lactation and grazing low mass pasture during autumn. The study was carried out in 40 Holstein Friesian cows over 57 d. Prior to experimental treatment, milk production and days of lactation averaged 24.1 ± 2.8 kg d-1 and 62 ± 14 d, respectively. The dietary treatments consisted of two levels of supplementation with CS; 4.5 and 9 kg DM cow-1 d-1 (treatments LCS and HCS, respectively). Additionally, all the cows received a pasture allowance of 21 and 3 kg DM cow-1 d-1 of concentrate. Milk composition was determined using infrared spectrophotometry, while blood indicators were obtained using an autoanalyzer. There were not differences between treatments regarding milk production or composition, total DM or energy intake. Herbage and protein intake was higher for LCS treatment (P < 0.001). Increasing supplementation decreased (P < 0.001) daily weight gain but did not affect body condition. Plasma concentrations of βOH-butyrate were lower (P = 0.038) for the LCS treatment; while urea concentrations were higher (P = 0.003), with no differences for non-esterified fatty acids (NEFA) concentrations. Supplementation with 4.5 kg d-1 of CS was sufficient to meet the production requirements of the cows.
author	Morales,Álvaro Grob,Daniela Balocchi,Oscar Pulido,Rubén
author_facet	Morales,Álvaro Grob,Daniela Balocchi,Oscar Pulido,Rubén
author_sort	Morales,Álvaro
title	Productive and metabolic response to two levels of corn silage supplementation in grazing dairy cows in early lactation during autumn
title_short	Productive and metabolic response to two levels of corn silage supplementation in grazing dairy cows in early lactation during autumn
title_full	Productive and metabolic response to two levels of corn silage supplementation in grazing dairy cows in early lactation during autumn
title_fullStr	Productive and metabolic response to two levels of corn silage supplementation in grazing dairy cows in early lactation during autumn
title_full_unstemmed	Productive and metabolic response to two levels of corn silage supplementation in grazing dairy cows in early lactation during autumn
title_sort	productive and metabolic response to two levels of corn silage supplementation in grazing dairy cows in early lactation during autumn
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2014
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392014000200012
work_keys_str_mv	AT moralesalvaro productiveandmetabolicresponsetotwolevelsofcornsilagesupplementationingrazingdairycowsinearlylactationduringautumn AT grobdaniela productiveandmetabolicresponsetotwolevelsofcornsilagesupplementationingrazingdairycowsinearlylactationduringautumn AT balocchioscar productiveandmetabolicresponsetotwolevelsofcornsilagesupplementationingrazingdairycowsinearlylactationduringautumn AT pulidoruben productiveandmetabolicresponsetotwolevelsofcornsilagesupplementationingrazingdairycowsinearlylactationduringautumn
_version_	1714205335231660032

Productive and metabolic response to two levels of corn silage supplementation in grazing dairy cows in early lactation during autumn

Ejemplares similares