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Befekadu, Chemere,Lee, Baehun,Kim, Jiyung,Kim, Moonju,Kim, Sichul,Kim, Byongwan,Sung, Kyungil The Korean Society of Grassland and Forage Science 2019 한국초지조사료학회지 Vol.39 No.3
The objective of this study was to evaluate the dry matter yield of (DMY) of Italian ryegrass (IRG) forage crop based on two seeding date (September 25 and October 2) in 2017 and 2018, and evaluation of the potential reason of DMY reduction in IRG cultivars grown at Chuncheon, South Korea. Three cultivars of IRG including Kowinearly, Kowinmaster and Hwasan 104 were used in this experiment. The experimental field was designed as a split-split-plot arrangement. The cultivars were harvested on April 26 before the heading stage of both years. In this study, no significant effect (p>0.05) of seeding date has been found on the DMY, whereas the cultivars and year showed a significant effect on the DMY (p<0.05). Except September 25 of 2017, Hwasan 104 indicated significantly lower (p<0.05) DMY than Kowinearly and Kowinmaster in all seeding periods. Though no significant difference (p>0.05) was observed for the DMY between the two seeding dates in 2018, but the DMY was significantly lower (p<0.05) than that of 2017. Lower crude protein (CP) content of Kowinearly was observed on the seeding date of October 2 of 2017, and also in both seeding dates on 2018 (p<0.05). No significant difference (p>0.05) was observed in acid detergent fiber (ADF) between the cultivars on both seeding dates and years. Similarly, no significant difference (p>0.05) was found in neutral detergent fiber (NDF) between the cultivars in 2017. However, Kowinearly showed higher NDF content as compared to Kowinmaster and Hwasan 104 on both seeding dates and years. The seeding date has no significant difference (p>0.05). Thus, considering the extent of DMY in both years, the mean minimum temperature during winter season could be the limiting factor for the DMY of IRG cultivars. However, based on this study, the seeding dates of September 25 and October 2 have no potential effect on the DMY. Thus, on the basis of the current DMY and forge quality parameters, the cultivation Kowinmaster is recommended in Chuncheon.
Chemere, Befekadu,Lee, Bae Hun,Nejad, Jalil Ghassemi,Kim, Byong Wan,Sung, Kyung Il The Korean Society of Grassland and Forage Science 2017 한국초지조사료학회지 Vol.37 No.3
This study was designed to investigate the carryover effects of high-forage to concentrate (F: C) diet in bred heifers on feed intake, feed efficiency (FE) and milk production of primiparous lactating Holstein cows. The experiment was conducted for 589 days (d) from onset of pregnancy through to the end of first lactation. Twenty-four bred heifers (Body weight: $BW=345.8{\pm}45.4kg$ and $15{\pm}1.2mon$ of age) randomly assigned to two groups of 3 pens containing 4 heifers each and fed high forage (HF) diet with F: C ratio of 91.7: 8.3% and low forage (LF) diet with F: C ratio of 77.8: 22.2% throughout the pregnancy period. After calving, lactating cows were fed total mixed ration (TMR) based diet. No differences (p > 0.05) were observed in dry matter intake (DMI) of bred heifers and primiparous lactating cows in both HF and LF groups. The FE of mid-to-late lactation period was higher (p< 0.05) in HF than LF group. However, the HF group showed higher (p < 0.05) milk yield, 4 % fat corrected milk (FCM) and energy corrected milk (ECM) than LF group during the 305 d lactation. The LF group showed higher (p < 0.05) milk fat, crude protein (CP), milk urea nitrogen (MUN), solid not fat (SNF) and somatic cell count (SCC) than HF group. It is concluded that restriction of F: C ratio to 91.7: 8.3% to bred heifers has the potential carryover effects to maintain higher milk yield and FE with no adverse effect on feed intake and milk composition of primiparous lactating Holstein cows.
Andualem Befekadu Ambecha,Girma Alemu Melka,Dessalegn Obsi Gemeda 대한공간정보학회 2020 Spatial Information Research Vol.28 No.5
This study is aimed to identify potential ecotourism sites using Geographic Information System and Multi-criteria Decision Analysis in Adiracha district of Sheka Zone, south-western Ethiopia. Landsat ETM Image and STRM data of 2016 with 30 m resolution and topographic map of Ethiopia were used in this study. Ecotourism potential site selection criteria were designed based on 26 stakeholder’s opinions. The final suitability map of ecotourism has been realized by applying an integrated weighted overlay technique of Geographic Information System. The suitability map was categorized into four classes as Suitable, Moderately Suitable, Less Suitable, and Not Suitable. The study attempts to indicate the level of ecotourism suitability at different location in the study area. The outcome of this research is useful to understand the spatial information of Sheka district that can be used for policy makers. This study can be also used as a basis for assessing ecotourism site suitability in other regions.