| Registro completo |
| Provedor de dados: |
PAB
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| País: |
Brazil
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| Título: |
Daily intake of lactating crossbred cows grazing elephant grass rotationally
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| Autores: |
Aroeira,Luiz Januário Magalhães
Lopes,Fernando César Ferraz
Soares,João Paulo Guimarães
Deresz,Fermino
Verneque,Rui da Silva
Arcuri,Pedro Braga
Matos,Leovegildo Lopes de
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| Data: |
2001-06-01
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| Ano: |
2001
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| Palavras-chave: |
Pennisetum purpureum
Digestibility
Extrusion
Dry matter content
Feed grasses
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| Resumo: |
The goal of this trial was to estimate the total dry matter (TDMI) and daily pasture dry matter intakes (PDMI) by lactating crossbred Holstein - Zebu cows grazing elephant grass (Pennisetum purpureum Schum.) paddocks submitted to different rest periods. Three groups of 24 cows were used during two years. The paddocks were grazed during three days at the stocking rate of 4.5 cows/ha. Treatments consisted of resting periods of 30 days without concentrate and resting periods of 30, 37.5 and 45 days with 2 kg/cow/day of 20.6% crude protein concentrate. From July to October, pasture was supplemented with chopped sugarcane plus 1% urea. Total daily dry matter intake was estimated using the extrusa in vitro dry matter digestibility and the fecal output with chromium oxide. Regardless of the treatment the estimated average TDMI was 2.7, 2.9 and 2.9±0.03% and the mean PDMI was 1.9, 2.1 and 2.1±0.03% of body weight in the first, second and third grazing day, respectively (P<0.05). Only during the summer pasture quality was the same whichever the grazing day. Sugarcane effectively replaced grazing pasture, mainly in the first day when pasture dry matter intake was lowest.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2001000600009
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| Editor: |
Embrapa Secretaria de Pesquisa e Desenvolvimento
Pesquisa Agropecuária Brasileira
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| Relação: |
10.1590/S0100-204X2001000600009
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| Formato: |
text/html
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| Fonte: |
Pesquisa Agropecuária Brasileira v.36 n.6 2001
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| Direitos: |
info:eu-repo/semantics/openAccess
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