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Establishment of grazing dwarf napiergrass pasture for the laborsaving and environmentally conservative feeding system to breeding beef cows

建立放牧矮秆草牧场，为肉牛养殖提供省力环保的饲养系统

基本信息

批准号：
16580223
负责人：
ISHII Yasuyuki
金额：
$ 1.34万
依托单位：
University of Miyazaki
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2004
资助国家：
日本
起止时间：
2004 至 2005
项目状态：
已结题

项目摘要

Objectives : Dwarf napiergrass (Pennisetum purpureum Schumach) of a late-heading type (dwarf-late, DL), introduced by the Dairy Promotion Organization, Thailand, has a high over-wintering ability and is the most suitable variety for grazing in southern Kyushu, Japan. DL napiergrass pasture can be oversown with Italian ryegrass (Lolium multiflorum Lam., IR) in early November to extend the grazing period in the next spring. The objectives of this study were firstly to examine the herbage mass, digestibility and crude protein (CP) content of DL and IR both before and after rotational grazing in relation to the daily live-weight (LW) gain of cattle 4 years after establishment in the lowlands of Kyushu, Japan and secondarily to examine the laborsaving vegetative propagation method of DL napiergrass in Okinawa prefecture.Materials and Methods : Four paddocks of DL pasture (5 a, 20m × 25m/paddock) were established by rooted tillers on May 6, 2002. The DL pasture was rotationally grazed by 3 b … More reeding cattle (Japanese-Black) for 3 cycles from August to December in 2002 and by 2-3 beef cattle 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 from June to October in both 2004 and 2005. 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 451,359,276 and 276 kg/head in 2002, 2003, 2004 and 2005, respectively. In vitro dry matter digestibility (IVDMD) and CP content were measured in the herbage cut at 10cm above the ground surface at every cycle in 2004 for DL napiergrass and at 5cm in 2004 and 2005 for IR.Results : 1)Live-weight of grazing cattle on DL pasture increased at 0.43-0.56 kg/head/day in 2004 and 2005. 2)The carrying capacities on DL pasture were more than 1000 Cow-day/ha in 2002-2005. 3)Annual mean CP content and IVDMD for DL napiergrass were 81 g/kg DM and 0.641, respectively, in 2004 and IVDMD was higher than the average of tropical grasses (0.54). Annual CP contents for IR were 119 and 89 g/kg DM in 2004 and 2005, respectively and IVDMD, 0.805 and 0.738, respectively. Nursery plants of DL napiergrass can be obtained by the laborsaving vegetative method, where the over-wintered tillers were sampled at Okinawa prefecture in March 2006.In conclusions, this study demonstrates that DL pasture can be rotationally grazed by beef cows with higher quality of herbage than the average of tropical grasses, and the laborsaving vegetative method can be developed by transporting nursery tillers from Okinawa prefecture in spring. Less

目的：矮象草（Pennisetum purpureum Schumach）是由泰国乳业促进组织引进的一种晚抽穗型（dwarf-late，DL），具有很高的越冬能力，是日本九州南部最适合放牧的品种。DL Napiergrass牧场可以覆盖意大利黑麦草（Lolium multiflorum Lam.，IR）在11月初延长放牧期在第二年春天。本研究的目的是首先在日本九州低地研究轮牧前和轮牧后DL和IR的牧草质量、消化率和粗蛋白（CP）含量与牛建立4年后的日增重（LW）的关系，其次在冲绳县研究DL狼尾草省力的无性繁殖方法。材料和方法：2002年5月6日，采用根蘖法建立了DL草地4个围场（5a，20 m × 25 m/围场）。DL草地轮牧3 B ...更多信息 2002年8月~ 12月用日本黑牛饲养3个周期，2003年6月~ 12月用2-3头肉牛饲养6个周期。2004年5月5日建立了DL牧场的另外2个围场，2004年和2005年6月至10月，3头饲养肉牛与另外4个围场轮流放牧4个周期。牛LW测量在1100小时时，牛切换围场，没有集中或粗饲料喂养在此轮放牧。2002年、2003年、2004年和2005年的初始体重分别为451、359、276和276公斤/头。2004年和2005年分别测定了DL草和IR草的离地10 cm和5cm牧草的干物质体外消化率（IVDMD）和粗蛋白质含量。结果：1）DL草放牧牛的体重在2004年和2005年分别增加了0.43-0.56 kg/头/d。2)2002-2005年，DL草地的载畜量均在1000头/ha以上。3)2004年DL草CP含量和IVDMD年平均值分别为81 g/kg DM和0.641，IVDMD高于热带牧草的平均值（0.54）。2004年和2005年，IR的年CP含量分别为119和89 g/kg DM，IVDMD分别为0.805和0.738。2006年3月在日本冲绳县采越冬分蘖株，采用省力的无性繁殖法，可以获得DL草的苗圃植株。并且可以通过在春季从冲绳县运输苗圃分蘖来开发节省劳动力的营养方法。少

项目成果

期刊论文数量（32）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Grazing suitability of normal and dwarf napiergrassses transplanted on a bahiagrass pasture.

移植到巴伊亚草牧场上的正常和矮化龙胆草的放牧适宜性。

DOI：
发表时间：
2004
期刊：
Grassland Science 50・1
影响因子：
0
作者：
Muhammad Mukhtar;Yasuyuki Ishii;Sayan Tudsri;Sachiko Idota;Kiichi;Fukuyama;Tatsunobu Sonoda
通讯作者：
Tatsunobu Sonoda

南九州における矮性ネピアグラス草地の造成と肉用繁殖牛による放牧利用

九州南部矮纳皮尔草草地的营造及肉用牛的放牧利用

DOI：
发表时间：
2005
期刊：
日本草地学会誌 51・別号
影响因子：
0
作者：
石井康之;Sunusi Ambo Ako;富田逸郎;橋口純也;地内正嗣;深川聡;井戸田幸子;福山喜一
通讯作者：
福山喜一

Grazing characteristics in the dwarf napiergrass (Pennisetum purpureum Schumach) pasture by breeding beef cows at the first and second years after establishment in Kyushu.

九州地区饲养肉牛的矮秆草（Pennisetum purpureum Schumach）草场的放牧特性。

DOI：
发表时间：
2004
期刊：
Grassland Science 50・2
影响因子：
0
作者：
Muhammad Mukhtar;Yasuyuki Ishii;Sachiko Idota;Yoichiro Horii;Tatsunobu Sonoda
通讯作者：
Tatsunobu Sonoda

Rotational grazing system for beef cows on dwarf napiergrass pasture oversown with Italian ryegrass for 2 years after establishment