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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados; Embrapa Gado de Corte; Embrapa Gado de Leite; Embrapa Pantanal. |
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Data corrente: |
28/01/1992 |
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Data da última atualização: |
06/07/2018 |
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Autoria: |
ARAUJO, M. R. |
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Afiliação: |
MARIA RIBEIRO ARAUJO, CPAP. |
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Título: |
Dietary selection by cattle as influenced by stocking rates in a short-duration grazing system. |
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Ano de publicação: |
1985 |
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Fonte/Imprenta: |
Texas: Texas A&M University, 1985. |
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Páginas: |
117 f. |
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Descrição Física: |
il. |
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Idioma: |
Inglês
Português |
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Notas: |
Ph.D. Dissertation. |
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Conteúdo: |
A model was developed in an attempt to predict the selection ratio of little bluestem (Schizachyrium scoparium) and brownseed paspalum (paspalum plicatulum) in a simulated short-duration grazing system stocked at four different levels. The research was carried out over a two year period (1981 and 1982) in a Schizachyrium-Paspalum grassland of the Post Oak Savannah located at the Texas A&M Native Plant and Animal Conservancy near College Station. Linear and multiple regression analyses were used to determine the variables herbage allowance (total, little bluestem and brownseed paspalum), extended tiller height, live:dead ratio of tillers, temperature, rainfall and stocking rate influencing selection ratio of little bluesten and brownseed paspalum. Total herbage allowance was not restrictive for the potential intake during 1981. The increased grazing pressure for all stocking rates during 1982, coupled with low precipitation during the late growing season, affected herbage allowance only in the two stocking, rates during the fall and early winter. Herbage allowances of little bluestem and brownseed paspalum were the most important variables for predicting selection ratios of both species. Increased herbage allowance of little bluestem favored the preference of brownseed paspalum. This interrelationship was more noticeable in 1981 when grazing pressure was less than 1982. Mean tiller height and mean live:ded ratios of both species also accounted for variability in selection ratios for these key species. Total... MenosA model was developed in an attempt to predict the selection ratio of little bluestem (Schizachyrium scoparium) and brownseed paspalum (paspalum plicatulum) in a simulated short-duration grazing system stocked at four different levels. The research was carried out over a two year period (1981 and 1982) in a Schizachyrium-Paspalum grassland of the Post Oak Savannah located at the Texas A&M Native Plant and Animal Conservancy near College Station. Linear and multiple regression analyses were used to determine the variables herbage allowance (total, little bluestem and brownseed paspalum), extended tiller height, live:dead ratio of tillers, temperature, rainfall and stocking rate influencing selection ratio of little bluesten and brownseed paspalum. Total herbage allowance was not restrictive for the potential intake during 1981. The increased grazing pressure for all stocking rates during 1982, coupled with low precipitation during the late growing season, affected herbage allowance only in the two stocking, rates during the fall and early winter. Herbage allowances of little bluestem and brownseed paspalum were the most important variables for predicting selection ratios of both species. Increased herbage allowance of little bluestem favored the preference of brownseed paspalum. This interrelationship was more noticeable in 1981 when grazing pressure was less than 1982. Mean tiller height and mean live:ded ratios of both species also accounted for variability in selection rat... Mostrar Tudo |
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Palavras-Chave: |
Alimentation; Bovinae; Bovine; Dieta alimentar; Feeding habits; Grazing animal; Lotacao; Range; Stocking dessity. |
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Thesagro: |
Alimentação; Bovino; Composição Botânica; Dieta; Forragem; Gado; Habito Alimentar; Pastagem Natural; Pastejo; Planta Forrageira; Taxa; Taxa de Lotação. |
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Thesaurus Nal: |
botanical composition; cattle; diet; forage; grazing; livestock. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02672nam a2200457 a 4500
001 1790773
005 2018-07-06
008 1985 bl uuuu m 00u1 u #d
100 1 $aARAUJO, M. R.
245 $aDietary selection by cattle as influenced by stocking rates in a short-duration grazing system.
260 $aTexas: Texas A&M University$c1985
300 $a117 f.$cil.
500 $aPh.D. Dissertation.
520 $aA model was developed in an attempt to predict the selection ratio of little bluestem (Schizachyrium scoparium) and brownseed paspalum (paspalum plicatulum) in a simulated short-duration grazing system stocked at four different levels. The research was carried out over a two year period (1981 and 1982) in a Schizachyrium-Paspalum grassland of the Post Oak Savannah located at the Texas A&M Native Plant and Animal Conservancy near College Station. Linear and multiple regression analyses were used to determine the variables herbage allowance (total, little bluestem and brownseed paspalum), extended tiller height, live:dead ratio of tillers, temperature, rainfall and stocking rate influencing selection ratio of little bluesten and brownseed paspalum. Total herbage allowance was not restrictive for the potential intake during 1981. The increased grazing pressure for all stocking rates during 1982, coupled with low precipitation during the late growing season, affected herbage allowance only in the two stocking, rates during the fall and early winter. Herbage allowances of little bluestem and brownseed paspalum were the most important variables for predicting selection ratios of both species. Increased herbage allowance of little bluestem favored the preference of brownseed paspalum. This interrelationship was more noticeable in 1981 when grazing pressure was less than 1982. Mean tiller height and mean live:ded ratios of both species also accounted for variability in selection ratios for these key species. Total...
650 $abotanical composition
650 $acattle
650 $adiet
650 $aforage
650 $agrazing
650 $alivestock
650 $aAlimentação
650 $aBovino
650 $aComposição Botânica
650 $aDieta
650 $aForragem
650 $aGado
650 $aHabito Alimentar
650 $aPastagem Natural
650 $aPastejo
650 $aPlanta Forrageira
650 $aTaxa
650 $aTaxa de Lotação
653 $aAlimentation
653 $aBovinae
653 $aBovine
653 $aDieta alimentar
653 $aFeeding habits
653 $aGrazing animal
653 $aLotacao
653 $aRange
653 $aStocking dessity
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Embrapa Pantanal (CPAP) |
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