Establishment of Feeding System of Breeding Beef Cows under the Labor-saving and Environment-conservative Methods by the Rotational Grazing on the Dwarf Napiergrass Pasture
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Accession number;05A1044283
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| Title;Establishment of Feeding System of Breeding Beef Cows under the Labor-saving and Environment-conservative Methods by the Rotational Grazing on the Dwarf Napiergrass Pasture |
| Author;
ISHII YASUYUKI
(Miyazaki Univ., Faculty of Agriculture, JPN)
IDOTA SACHIKO
(Miyazaki Univ., Faculty of Agriculture, JPN)
FUKUYAMA KIICHI
(Miyazaki Univ., Faculty of Agriculture, JPN)
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Journal Title;Shokuniku ni kansuru Josei Kenkyu Chosa Seika Hokokusho
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Journal Code:X0296A
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ISSN:
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VOL.23;NO.;PAGE.165-169(2005)
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| Figure&Table&Reference;FIG.5, REF.9 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;Dwarf napiergrass (Pennisetum purpureum Schumach) of a late-heading type (dwarflate, DL), introduced by the Dairy Promotion Organization, Thailand, has a high over-wintering ability and is suitable for grazing. The objective of this study was to examine the herbage mass, digestibility and crude protein (CP) concentration of DL both before and after rotational grazing in relation to the daily live weight (LW) gain of cattle 3 years after establishment in the lowlands of Kyushu, Japan. Four paddocks of DL pasture (5 a, 20 m * 25 m/paddock) were established by rooted tillers on May 6, 2002. The DL pasture was rotationally grazed for one week with a 3-week rest period by 3 breeding cattle for 3 cycles from August to December in 2002 and by 2-3 beef cattle (Japanese-Black) for 6 cycles from June to December in 2003. Another 2 paddocks of DL pasture were established on May 5, 2004, and were rotationally grazed by 3 raising beef cows with other 4 paddocks for 4 cycles under the same grazing period as in 2002 and 2003. Cattle LW was measured at 1100 h when cattle switched paddocks, and no concentrate or roughage was fed during this rotational grazing. Initial LWs were 451, 359 and 276 kg/head in 2002, 2003 and 2004, respectively. In vitro dry matter digestibility (IVDMD) and CP concentration were measured in the herbage cut at 10 cm above the ground surface at every cycle in 2002 and at cycles 2, 4 and 6 in 2003, which are designated as period I, II and III, respectively. Live weight of grazing cattle was at least maintained in 2002 and increased at 0.30-0.48 kg/head/day during periods I and II in 2003 and at 0.35-0.50 kg/head/day during whole periods in 2004. Annual mean CP concentration and IVDMD were 99 g/kg DM and 0.623-0.652, respectively in both 2002 and 2003, and they were higher than the averages of tropical grasses (about 93 g/kg DM and 0.54, respectively).... (author abst.) |
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