Supplementation of crossbred cows with maize and urea in tropical pasture
ABSTRACT This research article aims to evaluate the effect of total replacement of corn by soybean meal and urea on intake and apparent digestibility of dry matter and its components, production and composition of milk and feeding behavior of lactating cows grazing, with intermittent stocking Mombaça grass (Megathyrsus maximus cv. Mombaça). Twelve milking cows were distributed in a triple 4 x 4 latin square. Experimental treatments consisted of four soybean meal replacement levels by corn more urea (0; 33; 66; 100%). The grass has an average content of crude protein and neutral detergent fiber of 19% and 59%, respectively. The replacement of soybean meal by corn and urea did not affect the intake and digestibility of nutrients. A linear reduction of milk production was observed, but there was no change in milk production corrected to 4.0% of fat. The milk components (g/kg) of fat, protein, lactose, and total solids were not altered, as well as feeding behavior. Under the conditions of this study, the replacement of the diets is suitable for crossbred dairy cows in lactation third medium, producing in average of 12.5 kg/day-1 when kept in quality pastures.
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Universidade Federal de Minas Gerais, Escola de Veterinária
2021
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oai:scielo:S0102-093520210006011872021-11-03Supplementation of crossbred cows with maize and urea in tropical pastureGuerra,M.G.Véras,A.S.C.Ferreira,M.A.Novaes,L.P.Gurgel,A.L.C.Silva,L.R.C.Barreto,L.M.G.Parente,M.O.M.Santos,V.L.F. grazing intake milk composition milk production protein ABSTRACT This research article aims to evaluate the effect of total replacement of corn by soybean meal and urea on intake and apparent digestibility of dry matter and its components, production and composition of milk and feeding behavior of lactating cows grazing, with intermittent stocking Mombaça grass (Megathyrsus maximus cv. Mombaça). Twelve milking cows were distributed in a triple 4 x 4 latin square. Experimental treatments consisted of four soybean meal replacement levels by corn more urea (0; 33; 66; 100%). The grass has an average content of crude protein and neutral detergent fiber of 19% and 59%, respectively. The replacement of soybean meal by corn and urea did not affect the intake and digestibility of nutrients. A linear reduction of milk production was observed, but there was no change in milk production corrected to 4.0% of fat. The milk components (g/kg) of fat, protein, lactose, and total solids were not altered, as well as feeding behavior. Under the conditions of this study, the replacement of the diets is suitable for crossbred dairy cows in lactation third medium, producing in average of 12.5 kg/day-1 when kept in quality pastures.info:eu-repo/semantics/openAccessUniversidade Federal de Minas Gerais, Escola de VeterináriaArquivo Brasileiro de Medicina Veterinária e Zootecnia v.73 n.5 20212021-10-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352021000601187en10.1590/1678-4162-12416 |
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Guerra,M.G. Véras,A.S.C. Ferreira,M.A. Novaes,L.P. Gurgel,A.L.C. Silva,L.R.C. Barreto,L.M.G. Parente,M.O.M. Santos,V.L.F. |
spellingShingle |
Guerra,M.G. Véras,A.S.C. Ferreira,M.A. Novaes,L.P. Gurgel,A.L.C. Silva,L.R.C. Barreto,L.M.G. Parente,M.O.M. Santos,V.L.F. Supplementation of crossbred cows with maize and urea in tropical pasture |
author_facet |
Guerra,M.G. Véras,A.S.C. Ferreira,M.A. Novaes,L.P. Gurgel,A.L.C. Silva,L.R.C. Barreto,L.M.G. Parente,M.O.M. Santos,V.L.F. |
author_sort |
Guerra,M.G. |
title |
Supplementation of crossbred cows with maize and urea in tropical pasture |
title_short |
Supplementation of crossbred cows with maize and urea in tropical pasture |
title_full |
Supplementation of crossbred cows with maize and urea in tropical pasture |
title_fullStr |
Supplementation of crossbred cows with maize and urea in tropical pasture |
title_full_unstemmed |
Supplementation of crossbred cows with maize and urea in tropical pasture |
title_sort |
supplementation of crossbred cows with maize and urea in tropical pasture |
description |
ABSTRACT This research article aims to evaluate the effect of total replacement of corn by soybean meal and urea on intake and apparent digestibility of dry matter and its components, production and composition of milk and feeding behavior of lactating cows grazing, with intermittent stocking Mombaça grass (Megathyrsus maximus cv. Mombaça). Twelve milking cows were distributed in a triple 4 x 4 latin square. Experimental treatments consisted of four soybean meal replacement levels by corn more urea (0; 33; 66; 100%). The grass has an average content of crude protein and neutral detergent fiber of 19% and 59%, respectively. The replacement of soybean meal by corn and urea did not affect the intake and digestibility of nutrients. A linear reduction of milk production was observed, but there was no change in milk production corrected to 4.0% of fat. The milk components (g/kg) of fat, protein, lactose, and total solids were not altered, as well as feeding behavior. Under the conditions of this study, the replacement of the diets is suitable for crossbred dairy cows in lactation third medium, producing in average of 12.5 kg/day-1 when kept in quality pastures. |
publisher |
Universidade Federal de Minas Gerais, Escola de Veterinária |
publishDate |
2021 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352021000601187 |
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