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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
02/08/2001 |
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Data da última atualização: |
18/08/2023 |
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Autoria: |
MONTOSSI, F.; PIGURINA, G.; BERRETTA, E. J.; SANTAMARINA, I. |
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Título: |
A comparative grazing study of sheep and cattle diet selection on native pastures in Uruguai. |
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Ano de publicação: |
2001 |
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Fonte/Imprenta: |
In: INTERNATIONAL GRASSLAND CONGRESS, 19., 2001, São Pedro, SP. Grassland ecosystems: an outlook into the 21st century: proceedings. Brasília, DF: Sociedade Brasileira de Zootecnia; Piracicaba: FEALQ, 2001. p. 345-347. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: An experiment was carried out during winter, spring and summer 1997, on native pastures of the basaltic region of Uruguay to evaluate the effects of different herbage mass levels (high, medium and low) on sward characteristics and on sheep and cattle diet selection and grazing behaviour. Higher herbage masses resulted in increments in herbage accumulation and sheep bite weight: winter (1880, 1513 and 610 kg DM ha-1 , P < 0.01; 199, 148 and 128 mg DM/bite, P < 0.01), and summer (3046, 2175 and 1172 kg DM ha-1 , P < 0.01; 214, 175 and 143 mg DM/bite, P < 0.01) for high, medium and low herbage mass levels respectively. The nutritive value of diet selected by sheep and cattle was higher than that of the herbage on offer, and higher in sheep than in cattle: winter (10.2, 15.9 and 12.5% crude protein, CP, P < 0.05; 49.2, 32.4 and 38.1% acid detergent fiber, ADF, P < 0.01, and summer (7.4, 10 and 9.5% CP, P < 0.05; 51.1, 36.8 and 43% ADF, P < 0.01) for herbage on offer, sheep and cattle diets respectively. These contrasting results found in the nutritive value were closely associated with differences in the proportions of the botanical components recorded, particularly the differential contribution of dead material. This experiment quantified the importance of diet selection in determining the nutritive value of the forage eaten by sheep and cattle on the native pastures of the basaltic region of Uruguay and established some relationships between diet selection and grazing management, involving animal selectivity ability differences (sheep versus cattle) and seasonal effects. MenosAbstract: An experiment was carried out during winter, spring and summer 1997, on native pastures of the basaltic region of Uruguay to evaluate the effects of different herbage mass levels (high, medium and low) on sward characteristics and on sheep and cattle diet selection and grazing behaviour. Higher herbage masses resulted in increments in herbage accumulation and sheep bite weight: winter (1880, 1513 and 610 kg DM ha-1 , P < 0.01; 199, 148 and 128 mg DM/bite, P < 0.01), and summer (3046, 2175 and 1172 kg DM ha-1 , P < 0.01; 214, 175 and 143 mg DM/bite, P < 0.01) for high, medium and low herbage mass levels respectively. The nutritive value of diet selected by sheep and cattle was higher than that of the herbage on offer, and higher in sheep than in cattle: winter (10.2, 15.9 and 12.5% crude protein, CP, P < 0.05; 49.2, 32.4 and 38.1% acid detergent fiber, ADF, P < 0.01, and summer (7.4, 10 and 9.5% CP, P < 0.05; 51.1, 36.8 and 43% ADF, P < 0.01) for herbage on offer, sheep and cattle diets respectively. These contrasting results found in the nutritive value were closely associated with differences in the proportions of the botanical components recorded, particularly the differential contribution of dead material. This experiment quantified the importance of diet selection in determining the nutritive value of the forage eaten by sheep and cattle on the native pastures of the basaltic region of Uruguay and established some relationships between diet selection and grazin... Mostrar Tudo |
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Palavras-Chave: |
Comportamento alimentar; Diet selection; Dieta selecionada; Feeding habits; Grazing behaviour; Native pastures; Rate of passage; Uruguai. |
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Thesagro: |
Bovino; Ovino; Pastagem Nativa; Pastejo. |
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Thesaurus Nal: |
Cattle; Digestibility; Feed intake; Forage crops; Grazing; Ruminant nutrition; Sheep feeding. |
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Categoria do assunto: |
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Marc: |
LEADER 02816nam a2200373 a 4500
001 1524245
005 2023-08-18
008 2001 bl uuuu u00u1 u #d
100 1 $aMONTOSSI, F.
245 $aA comparative grazing study of sheep and cattle diet selection on native pastures in Uruguai.$h[electronic resource]
260 $aIn: INTERNATIONAL GRASSLAND CONGRESS, 19., 2001, São Pedro, SP. Grassland ecosystems: an outlook into the 21st century: proceedings. Brasília, DF: Sociedade Brasileira de Zootecnia; Piracicaba: FEALQ, 2001. p. 345-347.$c2001
520 $aAbstract: An experiment was carried out during winter, spring and summer 1997, on native pastures of the basaltic region of Uruguay to evaluate the effects of different herbage mass levels (high, medium and low) on sward characteristics and on sheep and cattle diet selection and grazing behaviour. Higher herbage masses resulted in increments in herbage accumulation and sheep bite weight: winter (1880, 1513 and 610 kg DM ha-1 , P < 0.01; 199, 148 and 128 mg DM/bite, P < 0.01), and summer (3046, 2175 and 1172 kg DM ha-1 , P < 0.01; 214, 175 and 143 mg DM/bite, P < 0.01) for high, medium and low herbage mass levels respectively. The nutritive value of diet selected by sheep and cattle was higher than that of the herbage on offer, and higher in sheep than in cattle: winter (10.2, 15.9 and 12.5% crude protein, CP, P < 0.05; 49.2, 32.4 and 38.1% acid detergent fiber, ADF, P < 0.01, and summer (7.4, 10 and 9.5% CP, P < 0.05; 51.1, 36.8 and 43% ADF, P < 0.01) for herbage on offer, sheep and cattle diets respectively. These contrasting results found in the nutritive value were closely associated with differences in the proportions of the botanical components recorded, particularly the differential contribution of dead material. This experiment quantified the importance of diet selection in determining the nutritive value of the forage eaten by sheep and cattle on the native pastures of the basaltic region of Uruguay and established some relationships between diet selection and grazing management, involving animal selectivity ability differences (sheep versus cattle) and seasonal effects.
650 $aCattle
650 $aDigestibility
650 $aFeed intake
650 $aForage crops
650 $aGrazing
650 $aRuminant nutrition
650 $aSheep feeding
650 $aBovino
650 $aOvino
650 $aPastagem Nativa
650 $aPastejo
653 $aComportamento alimentar
653 $aDiet selection
653 $aDieta selecionada
653 $aFeeding habits
653 $aGrazing behaviour
653 $aNative pastures
653 $aRate of passage
653 $aUruguai
700 1 $aPIGURINA, G.
700 1 $aBERRETTA, E. J.
700 1 $aSANTAMARINA, I.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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