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Yasuyuki Ishii,Kiichi Fukuyama,Takanori Iwakiri,Ahmad Wadi,Sachiko Idota 한국초지조사료학회 2009 한국초지조사료학회 학술대회논문집 Vol.2009 No.08
In southern Kyushu, dwarf variety of late-heading type (DL) napiergrass (Pennisetum purpureum Schumach) has utilized for the rotational grazing in 4 months of hot summer period by Japanese-Black (JB) beef cows for 6 years in 2002-2007. The objectives of this study were to investigate the establishment of feeding system of DL napiergrass with Italian ryegrass (Lolium multiflorum Lam., IR) grazed by the standard herd of JB beef cows in breeding beef farmers. Grazing DL napiergrass pasture was established totally at 0.66 ㏊ with 5 paddocks (0.132 ㏊ each) in 2006. Oversowing of IR was imposed into the inter-row of DL napiergrass on December 8, 2007. Grazing for IR and DL napiergrass pastures was carried out in 30 and 71 days, respectively. Daily gain of beef cows for the grazing on DL napiergrass was averaged at 0.23 ㎏ head?¹ day?¹, and carrying capacity was calculated at 891 CD ㏊?¹. The results revealed that DL napiergrass with IR pasture should fit to the rotational grazing with maintaining the liveweight of grazing beef cows for 4.5 months, and it can be proposed for the sustainable and low-cost feeding system to smallholder farmers in this area.
Renny Fatmyah Utamy,Yasuyuki Ishii,Ahmad Wadi,Sachiko Idota,Naoto Harada,Kiichi Fukuyama 한국초지조사료학회 2009 한국초지조사료학회 학술대회논문집 Vol.2009 No.08
In southern Kyushu, aged beef cow farmers hold limited available land and poor machinery equipment, while demand for herbage production increases rapidly due to high cost of imported herbage supply. Dwarf variety of late-heading type (DL) napiergrass (Pennisetum purpureum Schumach) meets the situation for smallholder farmers, especially in remote islands. The objectives of this study were to investigate adaptability and sustainability of DL napiergrass among 12 sites in southern Kyushu, by determine yield, quality and overwintering ability. The results revealed t㏊t DL napiergrass should adapt to the examined sites including isolated islands at an established year and produce satisfactory yield and quality herbage, if additional fertilizer application covers more t㏊n 10g N m?² year?¹ after establishment.
Ishigaki, Genki,Nitthaisong, Pattama,Prasojo, Yogi Sidik,Kobayashi, Ikuo,Fukuyama, Kiichi,Rahman, Mohammad Mijanur,Akashi, Ryo Asian Australasian Association of Animal Productio 2018 Animal Bioscience Vol.31 No.5
Objective: The preference evaluation of cattle is an important factor for estimation and improvement of the grazing amounts of newly introduced or bred grasses or cultivars in barn. This study was performed to assess the grazing behavior (the amount of grazing and/or the grazing speed) of cattle as indirect method using newly bred Brachiaria ruziziensis tetraploid strain 'OKI-1'(BR) hay as treatment group and Cloris gayana 'Callide' (CG) hay as control group. It also compared the feasibility of using behavioral differences between two groups as one criteria for evaluating preference by Japanese black cattle in barn. Methods: Three experiments were carried out using 12 growing Japanese Black cattle including 6 males and 6 females. In each experiment, the four Japanese Black cattle (2 males and 2 females) were placed in separated stall and allowed to graze BR and CG in manger that was separated into two portions for about 30 min. The position and behavior of the cattle were recorded, and weighed the residual of each gay at 15 and 30 minutes after experiment start. Results: The BR was superior to CG in chemical composition such as protein, fibers and non-fibrous carbohydrate. The cattle, over all, tended to prefer BR over CG in the first half 15 minutes in terms of the time spent and amount of grazing. Additionally, growing cattle exhibited neophilia for BR bred newly. Conclusion: These findings indicated the current approach could be applied for one of criteria to evaluate the preference of hay by Japanese black cattle under indoor housing environment.