Substitution of soybean meal for cottonseed meal in multiple supplements for grazing beef heifers in the dry season
<p>The objective of this study was to evaluate the effect of substituting soybean meal for cottonseed meal in multiple supplements on the nutritional characteristics and performance of beef heifers in their postweaning phase on <em>Brachiaria decumbens </em>pastures during the dry...
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Universidade Estadual de Londrina
2016-02-01
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doaj-af2d9a01109042b4a7d261deed16199e2020-11-25T00:34:20ZengUniversidade Estadual de LondrinaSemina: Ciências Agrárias1676-546X1679-03592016-02-0137149550610.5433/1679-0359.2016v37n1p49512989Substitution of soybean meal for cottonseed meal in multiple supplements for grazing beef heifers in the dry seasonRomán Maza Ortega0Mário Fonseca Paulino1Edenio Detmann2Luciana Navajas Rennó3Lívia de Vieira Barros4Aline Gomes da Silva5David Contreras Marquez6Deilen Sotelo Moreno7Felipe Henrique Moura8Daniel Mageste de Almeida9Universidade Federal de ViçosaUniversidade Federal de ViçosaUniversidade Federal de ViçosaUniversidade Federal de ViçosaUniversidade do Estado de Mato GrossoUniversidade Federal de ViçosaUniversidade Federal de ViçosaUniversidade Federal de ViçosaUniversidade Federal de ViçosaUniversidade Federal de Viçosa<p>The objective of this study was to evaluate the effect of substituting soybean meal for cottonseed meal in multiple supplements on the nutritional characteristics and performance of beef heifers in their postweaning phase on <em>Brachiaria decumbens </em>pastures during the dry season. Twenty-four Nellore beef heifers (average initial age and weight of 8 mo and 210±6 kg, respectively) were used. The design was completely randomized, with four treatments and six replicates. Supplements contained approximately 30% crude protein (CP) and a progressive substitution of soybean meal for cottonseed meal (0, 50 and 100%). The control animals received only a mineral mixture <em>ad libitum</em>, and those on the other treatments received supplementation at 1.0 kg/animal/day. No differences were found in ADG between supplemented and control animals (P>0.10). Supplementation increased crude protein (CP) intake only (P<0.10). The level of substitution of soybean meal for cottonseed meal did not affect (P>0.10) the intake of supplemented animals. Supplementation elevated the apparent digestibility coefficients (P<0.10) of OM, CP, NFC and TDN, but not EE or NDFap (P>0.10). A positive linear effect (P<0.10) of the level of substitution of soybean meal for cottonseed cake was observed on the digestibility of OM, NFC and TDN. Supplementation and the level of substitution had an effect (P<0.10) on the serum urea nitrogen and urine urea nitrogen contents. Supplementation or substitution level had no effect on the flow of microbial nitrogen to the intestine (MICN) or efficiency of microbial protein synthesis (EMPS) (P>0.10). Substitution caused a decreasing linear effect (P<0.10) on microbial nitrogen/nitrogen intake ratio (MICNR). In conclusion, substitution of soybean meal for cottonseed meal in multiple supplements during the dry season does not impair the productive performance of beef heifers.</p>http://www.uel.br/revistas/uel/index.php/semagrarias/article/view/21265Braquiaria decumbensDigestibilityIntakeSupplementation. |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Román Maza Ortega Mário Fonseca Paulino Edenio Detmann Luciana Navajas Rennó Lívia de Vieira Barros Aline Gomes da Silva David Contreras Marquez Deilen Sotelo Moreno Felipe Henrique Moura Daniel Mageste de Almeida |
spellingShingle |
Román Maza Ortega Mário Fonseca Paulino Edenio Detmann Luciana Navajas Rennó Lívia de Vieira Barros Aline Gomes da Silva David Contreras Marquez Deilen Sotelo Moreno Felipe Henrique Moura Daniel Mageste de Almeida Substitution of soybean meal for cottonseed meal in multiple supplements for grazing beef heifers in the dry season Semina: Ciências Agrárias Braquiaria decumbens Digestibility Intake Supplementation. |
author_facet |
Román Maza Ortega Mário Fonseca Paulino Edenio Detmann Luciana Navajas Rennó Lívia de Vieira Barros Aline Gomes da Silva David Contreras Marquez Deilen Sotelo Moreno Felipe Henrique Moura Daniel Mageste de Almeida |
author_sort |
Román Maza Ortega |
title |
Substitution of soybean meal for cottonseed meal in multiple supplements for grazing beef heifers in the dry season |
title_short |
Substitution of soybean meal for cottonseed meal in multiple supplements for grazing beef heifers in the dry season |
title_full |
Substitution of soybean meal for cottonseed meal in multiple supplements for grazing beef heifers in the dry season |
title_fullStr |
Substitution of soybean meal for cottonseed meal in multiple supplements for grazing beef heifers in the dry season |
title_full_unstemmed |
Substitution of soybean meal for cottonseed meal in multiple supplements for grazing beef heifers in the dry season |
title_sort |
substitution of soybean meal for cottonseed meal in multiple supplements for grazing beef heifers in the dry season |
publisher |
Universidade Estadual de Londrina |
series |
Semina: Ciências Agrárias |
issn |
1676-546X 1679-0359 |
publishDate |
2016-02-01 |
description |
<p>The objective of this study was to evaluate the effect of substituting soybean meal for cottonseed meal in multiple supplements on the nutritional characteristics and performance of beef heifers in their postweaning phase on <em>Brachiaria decumbens </em>pastures during the dry season. Twenty-four Nellore beef heifers (average initial age and weight of 8 mo and 210±6 kg, respectively) were used. The design was completely randomized, with four treatments and six replicates. Supplements contained approximately 30% crude protein (CP) and a progressive substitution of soybean meal for cottonseed meal (0, 50 and 100%). The control animals received only a mineral mixture <em>ad libitum</em>, and those on the other treatments received supplementation at 1.0 kg/animal/day. No differences were found in ADG between supplemented and control animals (P>0.10). Supplementation increased crude protein (CP) intake only (P<0.10). The level of substitution of soybean meal for cottonseed meal did not affect (P>0.10) the intake of supplemented animals. Supplementation elevated the apparent digestibility coefficients (P<0.10) of OM, CP, NFC and TDN, but not EE or NDFap (P>0.10). A positive linear effect (P<0.10) of the level of substitution of soybean meal for cottonseed cake was observed on the digestibility of OM, NFC and TDN. Supplementation and the level of substitution had an effect (P<0.10) on the serum urea nitrogen and urine urea nitrogen contents. Supplementation or substitution level had no effect on the flow of microbial nitrogen to the intestine (MICN) or efficiency of microbial protein synthesis (EMPS) (P>0.10). Substitution caused a decreasing linear effect (P<0.10) on microbial nitrogen/nitrogen intake ratio (MICNR). In conclusion, substitution of soybean meal for cottonseed meal in multiple supplements during the dry season does not impair the productive performance of beef heifers.</p> |
topic |
Braquiaria decumbens Digestibility Intake Supplementation. |
url |
http://www.uel.br/revistas/uel/index.php/semagrarias/article/view/21265 |
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