Corn silage supplementation for dairy cows grazing annual ryegrass at two pasture allowances

ABSTRACT Corn silage supplementation for dairy cows grazing in temperate annual pastures has rarely been investigated. The aim of this study is to compare two supplementation levels (0 and 4kg dry matter [DM]/day of a 7:1 mixture of corn silage and soybean meal) in dairy cows strip-grazing annual ry...

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Main Authors: M.F. Miguel, R. Delagarde, H.M.N. Ribeiro-Filho
Format: Article
Language:English
Published: Universidade Federal de Minas Gerais
Series:Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Subjects:
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352019000301037&lng=en&tlng=en
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author M.F. Miguel
R. Delagarde
H.M.N. Ribeiro-Filho
author_facet M.F. Miguel
R. Delagarde
H.M.N. Ribeiro-Filho
author_sort M.F. Miguel
collection DOAJ
description ABSTRACT Corn silage supplementation for dairy cows grazing in temperate annual pastures has rarely been investigated. The aim of this study is to compare two supplementation levels (0 and 4kg dry matter [DM]/day of a 7:1 mixture of corn silage and soybean meal) in dairy cows strip-grazing annual ryegrass (Lolium multiflorum Lam.) at two pasture allowances (PA, low= 25 and high = 40kg DM/d at ground level). The study was carried out according to an incomplete 4 × 3 Latin square design, using 12 cows and three experimental periods of 12 days. The green leaves allowances were only 4.9 and 8.5kg DM/d at the low and high PA, respectively. The total DM intake and milk production increased in supplemented cows compared to un-supplemented cows at the low PA, but were similar between supplementation levels at the high PA. The PI was unaffected by the PA, whereas the substitution rate was 0.68 in cows at the low PA and 1.35 in cows at the high PA. Corn silage supplementation may improve the total DM intake and milk production of dairy cows grazing in temperate annual pastures, but only at a low PA.
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spelling doaj.art-1719c93069b34f5aaa2d3607034c0f422022-12-21T23:30:13ZengUniversidade Federal de Minas GeraisArquivo Brasileiro de Medicina Veterinária e Zootecnia1678-41627131037104610.1590/1678-4162-9795S0102-09352019000301037Corn silage supplementation for dairy cows grazing annual ryegrass at two pasture allowancesM.F. MiguelR. DelagardeH.M.N. Ribeiro-FilhoABSTRACT Corn silage supplementation for dairy cows grazing in temperate annual pastures has rarely been investigated. The aim of this study is to compare two supplementation levels (0 and 4kg dry matter [DM]/day of a 7:1 mixture of corn silage and soybean meal) in dairy cows strip-grazing annual ryegrass (Lolium multiflorum Lam.) at two pasture allowances (PA, low= 25 and high = 40kg DM/d at ground level). The study was carried out according to an incomplete 4 × 3 Latin square design, using 12 cows and three experimental periods of 12 days. The green leaves allowances were only 4.9 and 8.5kg DM/d at the low and high PA, respectively. The total DM intake and milk production increased in supplemented cows compared to un-supplemented cows at the low PA, but were similar between supplementation levels at the high PA. The PI was unaffected by the PA, whereas the substitution rate was 0.68 in cows at the low PA and 1.35 in cows at the high PA. Corn silage supplementation may improve the total DM intake and milk production of dairy cows grazing in temperate annual pastures, but only at a low PA.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352019000301037&lng=en&tlng=endairy cowcorn silagegrazingpasture allowancesupplementation
spellingShingle M.F. Miguel
R. Delagarde
H.M.N. Ribeiro-Filho
Corn silage supplementation for dairy cows grazing annual ryegrass at two pasture allowances
Arquivo Brasileiro de Medicina Veterinária e Zootecnia
dairy cow
corn silage
grazing
pasture allowance
supplementation
title Corn silage supplementation for dairy cows grazing annual ryegrass at two pasture allowances
title_full Corn silage supplementation for dairy cows grazing annual ryegrass at two pasture allowances
title_fullStr Corn silage supplementation for dairy cows grazing annual ryegrass at two pasture allowances
title_full_unstemmed Corn silage supplementation for dairy cows grazing annual ryegrass at two pasture allowances
title_short Corn silage supplementation for dairy cows grazing annual ryegrass at two pasture allowances
title_sort corn silage supplementation for dairy cows grazing annual ryegrass at two pasture allowances
topic dairy cow
corn silage
grazing
pasture allowance
supplementation
url http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352019000301037&lng=en&tlng=en
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AT rdelagarde cornsilagesupplementationfordairycowsgrazingannualryegrassattwopastureallowances
AT hmnribeirofilho cornsilagesupplementationfordairycowsgrazingannualryegrassattwopastureallowances