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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
29/01/1996 |
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Data da última atualização: |
29/01/1996 |
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Autoria: |
HARRINGTON, G. N.; PRATCHETT, D. |
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Título: |
Stocking rate trials in Ankole, Uganda. II. Botanical analysis and ocsophageal fistula sampling of pastures grazed at different stocking rates. |
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Ano de publicação: |
1974 |
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Fonte/Imprenta: |
Journal of Agricultural Science, v.82, n.3, p.507-516, 1974. |
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Idioma: |
Inglês |
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Conteúdo: |
Botanical analyses of trials grazed at 3.6, 2.4, 1.2, 0.8 and 0.6 ha/300 kg animal for 4 years are detailed. The two heaviest grazing pressures encouraged Brachiaria decum-
bens, ahigh quality grass, at the expense of Themeda triandra and Hyparrhenia filependu-
la. Rotational grazing allowed the weed grass Cymbopogon afronardus to regenerate after
clearing more rapidly than did continuous grazing. Bullocks with oesophageal fistulas sam-
pled pastures at 2.4, 1.2 and 0.6 ha/animal at 4-weekly intervals for 12 months. The 0.6
ha/animal treatment was repeated on pasture cleared of the weed grass Cymboipogon
afronardus. Cattle growth rates, both long term and at the time of sampling, were recorded.
Cattle growth rates were greatest at 2.4 ha/animal but fistula sampling demonstrated that
the diet was significantly lower in CP and higher in CF than the more heavily stocked treat-
ments, which is contrary to the normal pattern. It is concluded that the differences in cattle
growth rates at the different stocking rates were due to differences in dry-matter intake ra-
ther than the recorded differences in diet quality. The higher CP in the diet at the heavier
stocking rates is ascribed to the increase of B. decumbens in the diet. An unexplained cei-
ling to cattle rates of ca. 0.5 kg/day, and a calculated dry matter intake of < 2.1% body
weight/day, in the presence of unlimited forage of 10% CP and 55% apparent digestibility,
makes it more economic to stock for maximum production per ha than per animal. MenosBotanical analyses of trials grazed at 3.6, 2.4, 1.2, 0.8 and 0.6 ha/300 kg animal for 4 years are detailed. The two heaviest grazing pressures encouraged Brachiaria decum-
bens, ahigh quality grass, at the expense of Themeda triandra and Hyparrhenia filependu-
la. Rotational grazing allowed the weed grass Cymbopogon afronardus to regenerate after
clearing more rapidly than did continuous grazing. Bullocks with oesophageal fistulas sam-
pled pastures at 2.4, 1.2 and 0.6 ha/animal at 4-weekly intervals for 12 months. The 0.6
ha/animal treatment was repeated on pasture cleared of the weed grass Cymboipogon
afronardus. Cattle growth rates, both long term and at the time of sampling, were recorded.
Cattle growth rates were greatest at 2.4 ha/animal but fistula sampling demonstrated that
the diet was significantly lower in CP and higher in CF than the more heavily stocked treat-
ments, which is contrary to the normal pattern. It is concluded that the differences in cattle
growth rates at the different stocking rates were due to differences in dry-matter intake ra-
ther than the recorded differences in diet quality. The higher CP in the diet at the heavier
stocking rates is ascribed to the increase of B. decumbens in the diet. An unexplained cei-
ling to cattle rates of ca. 0.5 kg/day, and a calculated dry matter intake of < 2.1% body
weight/day, in the presence of unlimited forage of 10% CP and 55% apparent digestibility,
makes it more economic to stock for maximum production per... Mostrar Tudo |
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Palavras-Chave: |
Analise botanica; Botanical analysis; Pasture; Production. |
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Thesagro: |
Fistula; Pastagem; Produção. |
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Categoria do assunto: |
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Marc: |
LEADER 02177naa a2200217 a 4500
001 1787003
005 1996-01-29
008 1974 bl --- 0-- u #d
100 1 $aHARRINGTON, G. N.
245 $aStocking rate trials in Ankole, Uganda. II. Botanical analysis and ocsophageal fistula sampling of pastures grazed at different stocking rates.
260 $c1974
520 $aBotanical analyses of trials grazed at 3.6, 2.4, 1.2, 0.8 and 0.6 ha/300 kg animal for 4 years are detailed. The two heaviest grazing pressures encouraged Brachiaria decum- bens, ahigh quality grass, at the expense of Themeda triandra and Hyparrhenia filependu- la. Rotational grazing allowed the weed grass Cymbopogon afronardus to regenerate after clearing more rapidly than did continuous grazing. Bullocks with oesophageal fistulas sam- pled pastures at 2.4, 1.2 and 0.6 ha/animal at 4-weekly intervals for 12 months. The 0.6 ha/animal treatment was repeated on pasture cleared of the weed grass Cymboipogon afronardus. Cattle growth rates, both long term and at the time of sampling, were recorded. Cattle growth rates were greatest at 2.4 ha/animal but fistula sampling demonstrated that the diet was significantly lower in CP and higher in CF than the more heavily stocked treat- ments, which is contrary to the normal pattern. It is concluded that the differences in cattle growth rates at the different stocking rates were due to differences in dry-matter intake ra- ther than the recorded differences in diet quality. The higher CP in the diet at the heavier stocking rates is ascribed to the increase of B. decumbens in the diet. An unexplained cei- ling to cattle rates of ca. 0.5 kg/day, and a calculated dry matter intake of < 2.1% body weight/day, in the presence of unlimited forage of 10% CP and 55% apparent digestibility, makes it more economic to stock for maximum production per ha than per animal.
650 $aFistula
650 $aPastagem
650 $aProdução
653 $aAnalise botanica
653 $aBotanical analysis
653 $aPasture
653 $aProduction
700 1 $aPRATCHETT, D.
773 $tJournal of Agricultural Science$gv.82, n.3, p.507-516, 1974.
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Registro original: |
Embrapa Pantanal (CPAP) |
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