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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of The Korean Society of Grassland and Forage Science
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Journal DOI :
The Korean Society of Grassland and Forage Science
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Volume & Issues
Volume 29, Issue 4 - Dec 2009
Volume 29, Issue 3 - Sep 2009
Volume 29, Issue 2 - Jun 2009
Volume 29, Issue 1 - Mar 2009
Selecting the target year
Plant Regeneration Capacity of Calluses Derived from Mature Seed of Perennial Ryegrass Cultivars
Lee, Ki-Won ; Lee, Joung-Kyong ; Kim, Ki-Yong ; Ji, Hee-Chung ; Park, Hyung-Soo ; Kim, Kyung-Hee ; Lee, Byung-Hyun ; Lee, Sang-Hoon ;
Journal of The Korean Society of Grassland and Forage Science, volume 29, issue 4, 2009, Pages 285~290
DOI : 10.5333/KGFS.2009.29.4.285
A suitable system for plant regeneration has been established for perennial ryegrass (Lolium perenne L.). In order to investigate the effects of genetic variations of perennial ryegrass in tissue culture response, calli were induced from mature seeds of five cultivars, 'Topgun', 'Accent', 'Renenge GLX', 'Tetrellite', 'Bison' and plant regeneration frequency was compared. Significant differences were observed among the cultivars in both callus induction and plant regeneration. Genotype 'Accent' consistently performed best in the callus formation and plant regeneration. These results can be used useful for molecular breeding of perennial ryegrass through genetic transformation.
Effect of Plant Growth Regulators on Callus Induction and Plant Regeneration from Mature Seed Culture of Miscanthus sinensis
Park, Choong-Hoon ; Kim, Yong-Goo ; Kim, Kyung-Hee ; Alam, Iftekhar ; Lee, Hyo-Jin ; Sharmin, Shamima Akhtar ; Lee, Ki-Won ; Lee, Byung-Hyun ;
Journal of The Korean Society of Grassland and Forage Science, volume 29, issue 4, 2009, Pages 291~298
DOI : 10.5333/KGFS.2009.29.4.291
In order to optimize tissue culture conditions for genetic transformation of Miscanthus sinensis, we investigated the effects of different plant growth regulators on callus induction and plant regeneration using mature seeds as explant. Dehusked mature seeds were cultured on MS medium supplemented with 3 to 10 mg/L 2,4-D, dicamba or NAA, 30 g/L sucrose and 750 mg/L
. A number of combinations of auxin and cytokinin (BA, kinetin) were also used. MS medium containing 3 mg/L 2,4-D was found optimal for embryogenic callus induction (75.7%) from mature seed. The highest number of plants were regenerated (44.6%) upon transferring the embryogenic callus to MS medium supplemented with 1 mg/L 2,4-D plus 2 mg/L BA. This high efficient plant regeneration system could be useful to use for molecular breeding of new cultivars by genetic transformation.
Characterization of Transgenic Tall Fescue Plants Overexpressing NDP Kinase Gene in Response to Cold Stress
Lee, Sang-Hoon ; Lee, Ki-Won ; Kim, Kyung-Hee ; Yun, Dae-Jin ; Kwak, Sang-Soo ; Lee, Byung-Hyun ;
Journal of The Korean Society of Grassland and Forage Science, volume 29, issue 4, 2009, Pages 299~306
DOI : 10.5333/KGFS.2009.29.4.299
Oxidative stress is the main limiting factor in crop productivity. To solve global environmental problems using the plant biotechnology, we have developed on the oxidative stress-tolerant transgenic tall fescue plants via Agrobacterium-mediated genetic transformation method. In order to develop transgenic tall fescue (Festuca arundinacea Schreb.) plants with enhanced tolerance to multiple environmental stresses, nucleotide diphosphate kinase gene under the control of CaMV35S promoter were introduced into genome of tall fescue plants. Proteomic analysis revealed that transgenic tall fescue not only accumulated NDP kinase 2 protein in their cells, but also induced several other antioxindative enzyme-related proteins. When leaf discs of transgenic plants were subjected to cold stress, they showed approximately 30% less damage than wild-type plants. In addition, transgenic tall fescue plants showed normal growth when transgenic plants were subjected to
for 3 days treatments. These results suggest that transgene is important in ROS scavenging by induction of antioxidative proteins, and could improve abiotic stress tolerance in transgenic tall fescue plants.
Selection of Growth Characteristics and Yield of Annual Legumes on Paddy Field
Kim, Won-Ho ; Lee, Joung-Kyong ; Park, Hyung-Soo ; HwangBo, Soon ; Lim, Young-Cheol ; Ji, Hee-Chung ; Lee, Hyo-Won ; Yoon, Bong-Ki ; Seo, Sung ;
Journal of The Korean Society of Grassland and Forage Science, volume 29, issue 4, 2009, Pages 307~312
DOI : 10.5333/KGFS.2009.29.4.307
This experiment was conducted to compare the agronomic characteristics and productivity of induced annual legumes at paddy field of Cheonan and Naju from 2004 to 2006. Chinese milk vetch (wild type), crimson clover (C.V. Linkarus), forage pea (C.V. Austrian pea), hairy vetch (C.V. Oregon commen) were used in this study. At the Naju region, the earliest flowering on 2nd may was found in Chinese milk vetch, while the latest on 18th May in forage pea. Fresh, dry matter (DM) and crude protein (CP) yields of crimson clover were highest as 28,870, 6,986 and 943 kg/ha, respectively. but the yield of chinese milk vetch was low by 9,885, 1,749 and 338 kg/ha. At the Cheonan region, the most fast flowering date variety was Chinese milk vetch, hairy vetch was very late as 19th May. Fresh, DM and CP yields of hairy vetch were highest as 7,916, 1,141 and 113 kg/ha, respectively. but the yield of chinese milk vetch showed the lowest by 270, 42 and 8 kg/ha. The CP content of annual legumes was 14.3%. chinese milk vetch showed the highest CP content by 19.3% and hairy vetch showed the lowest content by 9.9%. The present data showed that the productivity was closely dependent on winter hardness, in conclusion, crimson clover at Naju and hairy vetch at Cheonan region was suggested to be the most proper species as winter crop after rice harvest on paddy field when considered the winter hardiness.
Effect of Tillage System and Fertilizer Type on the Forage Yield and Quality of Italian Ryegrass
Kim, Jong-Duk ; Abuel, Shwin J. ; Jeon, Gyeong-Hyeop ; Kwon, Chan-Ho ;
Journal of The Korean Society of Grassland and Forage Science, volume 29, issue 4, 2009, Pages 313~320
DOI : 10.5333/KGFS.2009.29.4.313
This experiment was conducted to evaluate the effect of tillage system and fertilizer type on the forage yield and quality of Italian ryegrass. This experiment was a
factorial arrangement for two tillage systems (tillage and no-tillage) and two fertilizer type (chemical and manure compost). The plant height, dry matter (DM) content, DM yield, TDN (total digestible nutrients) yield, and CP (crude protein) yield have significant differences in tillage system of Italian ryegrass. Italian ryegrass cultivated with tillage (plow and rotary till) had lower plant height, DM yield, TDN yield and CP yield than no-tillage, while its DM content showed the opposite results. However, there were no significant differences in the results on fertilizer types. Neutral detergent fiber (NDF) and acid detergent fiber (ADF) contents were significantly higher in no-tillage compared to tillage. However, there was no significant difference in CP content on tillage system. TDN and relative feed value (RFV) were higher in tillage than no-tillage system (p<0.01). The TDN content was lower when using manure as fertilizer. No significant effects were observed for NDF and RFV in fertilizer type of Italian ryegrass. Based on the results of this study, tillage system and fertilizer type affected forage quality as well as forage yield. Forage yield of no-tillage was higher compared to tillage.
Effect of Varieties and Seeding Date on Over Winter and Dry Matter Yield of Italian Ryegrass in Paddy Field
Kim, Meing-Jooung ; Choi, Ki-Jun ; Kim, Jong-Geun ; Seo, Sung ; Yoon, Sei-Hyung ; Lim, Young-Chul ; Im, Seok-Ki ; Kwon, Eung-Gi ; Chang, Sun-Sik ; Kim, Hyeong-Cheol ; Kim, Tae-Il ;
Journal of The Korean Society of Grassland and Forage Science, volume 29, issue 4, 2009, Pages 321~328
DOI : 10.5333/KGFS.2009.29.4.321
This experiment was carried out to investigate the effect of cultivar and seeding date on the winter survival rate, quality and DM yield of Italian ryegrass on paddy field for three years in Suwon. Seeding started from 30th Sep. 2003. at intervals of five days and finished 20th Oct. New varieties of Italian ryegrass used in this experiment were "Kospeed", "Kowinmaster" and "Hwasan 101". The winter survival average rate of 5th Oct. seeding plot was 89.8% and it decreased with delayed seeding date. The heading date of "Kospeed" was 7th~13rd May, "Kowinmaster" was 16th May, but "Hwasan 101 ho" didn't show heading until 17th May. Dry matter (DM) yields of 30th Sep. seeding plot were Kospeed 7,909kg/ha, Kowinmaster 6,398 kg/ha and Hwasan 101 ho 5,204 kg/ha. DM yield was decreased with delayed seeding date. Total digestible nutrient (TDN) yield was also decreased with delayed seeding date. Crude protein (CP) content was the highest in Kospeed. seeding plot as 18.3% and in vitro dry matter digestibility (IVDMD) was not showed significant difference among seeding dates.
Effect of Different Drained Conditions on Growth, Forage Production and Quality of Silage Corn at Paddy Field
Ji, Hee-Chung ; Kim, Won-Ho ; Kim, Ki-Yong ; Lee, Sang-Hoon ; Yoon, Sei-Hyung ; Lim, Young-Chul ;
Journal of The Korean Society of Grassland and Forage Science, volume 29, issue 4, 2009, Pages 329~336
DOI : 10.5333/KGFS.2009.29.4.329
This experiment was carried out to know adaptability and forage production and quality of corn hybrid for silage at paddy field from 2007 to 2008 at Chungnam province. Growth, forage production and quality of silage corn showed more well drained condition than poorly drained condition at paddy field. Among growth characteristics, 'Kwangpyongok' and 'DK697' hybrids were somewhat strong for waterlogging, then and good at stay green, lodging, disease and insect resistance. Fresh yield of 'DK697' hybrid at poorly drained paddy field was the highest as 32,610 kg per ha among corn hybrids. The dry yield of 'P32P75' hybrid at poorly drained paddy field was the highest as 14,910 kg per ha The result of this study showed that 'P32P75', 'DK697', 'Kangdaok' and 'Kwangpyongok' hybrids had good growth characters and forage productivity at poorly drained paddy field and dry matter yield at poorly drained paddy field was 65.6% level compared with well drained paddy field.
Effects of Green Manure Crop and Cattle Slurry as Fertilizer Sources on Productivity and Nutritive Value of Sorghum X Sudangrass hybrid, and Soil Properties in Kimje, Chunlabukdo
Choi, Ki-Choon ; Na, Sang-Pil ; Jo, Nam-Chul ; Jung, Min-Woong ; Kim, Jong-Geun ; Park, Hyung-Soo ; Yoon, Chang ; Lim, Young-Chul ; Yook, Wan-Bang ;
Journal of The Korean Society of Grassland and Forage Science, volume 29, issue 4, 2009, Pages 337~344
DOI : 10.5333/KGFS.2009.29.4.337
This study was conducted to investigate the effects of various cropping system applied with cattle slurry on productivity of sorghum
sudangrass hybrid (SSH) and environmental pollution in paddy land. cropping systems used in this study were consisted of two designs, such as double-cropping sorghum
sudangrass hybrid followed by whole crop barley applied with cattle slurry (DSSCS) and mono-cropping sorghum
sudangrass hybrid followed by hairy vetch used as green manure (MSSGM). The field experiments were conducted on the clay loam at Backsanmyun, Kimje, Chunlabukdo province in Korea for three years (May 2006 to Apr. 2009). This study was arranged in completely randomized design with three replicates. The yield of dry matter (DM) of SSH in DSSCS increased significantly as compared with that of MSSGM (P<0.05). The contents of crude protein (CP), acid detergent fiber (ADF), neutral detergent fiber (NDF) and total digestible nutrients (TDN) of SSH were not influenced by cattle slurry and green manure. The pH, and contents of OM, T-N and
in soil samples collected from DSSCS after the end of experiment were higher than those of MSSGM. The pH, and contents of OM in DSSCS treatment were remarkably higher than those at the beginning of the experiment (p<0.05). However, The pH, and contents of OM in MSSGM treatment were hardly influenced, as compared with those at the beginning of the experiment. The contents of T-N in soil samples collected both from DSSCS snd MSSGM treatments were remarkably higher than those at the beginning of the experiment (p<0.05). In addition, the concentrations of CEC in soil samples collected at the end of the experiment were remarkably higher than those at the beginning of the experiment (p<0.05). The concentrations of
-P in leaching water were hardly influenced by the cropping system and application of cattle slurry.
Evaluation of Whole Crop Barley for Silage Quality Contest in 2008
Lee, Joung-Kyong ; Kim, Jong-Duk ; Lee, Hyun-Jin ; Jeon, Gyeong-Heop ; Kim, Jong-Geun ; Seo, Sung ; Jung, Min-Woong ; Choi, Jin-Hyuk ; Jo, Nam-Chul ; Park, Hyung-Soo ; Kim, Won-Ho ; Lim, Young-Chul ;
Journal of The Korean Society of Grassland and Forage Science, volume 29, issue 4, 2009, Pages 345~354
DOI : 10.5333/KGFS.2009.29.4.345
The barley (Hordeum vulgare L.) is now widely grown as a whole crop silage in Korea, but the quality of that silage does not examined from farms. Therefore, this experiment was conducted to evaluate the forage quality of whole crop barley that was participated in Silage Quality Contest in 2008. These data were classified by region, dry matter (DM) yield, with or not additive, planting and harvest date. Difference on the lactic acid content of barley silage was detected in the region, DM yield, additive and harvest date (p<0.05), however, there were partially significant differences in chemical composition. There were significant differences among moisture content in DM yield, pH in additive, and crude ash content in additive and planting date of barley silage. Crude protein content was significant difference in the region, and ether extract content was in region, DM yield and harvest date, however, non-fiber carbohydrate was significant difference in planting date of barley silage. Neutral detergent fiber, acid detergent fiber and relative feed value were significant difference only in the cultivation region of whole crop barley. According to this experiment, differences in the silage quality were observed among whole crop barley silages. Therefore, nutritive value as well as moisture and pH are important in silage quality evaluation of whole crop barley. Especially, lactic acid is an important factor for the evaluation of whole crop barley silage.
A Study on the Grazing Behavior of Thoroughbred Mares Grazed in Pasture at Summer Season of Jeju Island
Jeon, Byong-Tae ; Kim, Myeong-Hwa ; Park, Jae-Hyun ; Lee, Sang-Moo ; Sung, Si-Heung ; Kim, Sung-Jin ; Moon, Sang-Ho ;
Journal of The Korean Society of Grassland and Forage Science, volume 29, issue 4, 2009, Pages 355~364
DOI : 10.5333/KGFS.2009.29.4.355
This research was conducted to investigate the group and individual behavioral patterns of thoroughbred mares which are important for raising race-horses, in paddoks (pregnant) and pastures (nursing). In a group of nursing mare, eating 62%, standing resting 31%, drinking 3%, lying resting 1%, walking 1% and nursing 2% were observed, although no running was observed. Average time spent on individual behavior of mares (3 heads) was eating 295 min (55%), standing resting 193 min (36%), walking 18 min, drinking 18 min (3%), nursing 13 min (2%), lying resting 6 min (1%). Average 11 times of grooming, 2 times of urinating, and 1 time of feces were observed for mare in pasture. 48% of standing resting, 44% of eating, 2% of lying resting, 4% of walking, and 2% of drinking were revealed for pregnant mares in paddock. Average individual behavioral pattern of pregnant mares (3 heads) was 52% of eating, 40% of standing, 6% of walking, and 2% of drinking. Average 15 times of grooming, 1 time of urinating, 3 times of feces, 1 time of fighting, and 2 times of rolling were observed for pregnant mares in paddock. For moving patterns, pregnant mares were inclined to concentrate on where the nearby paddok is close to.
A Study on the Grazing Behavior of Thoroughbred Colts Grazed in Pasture at Summer Season of Jeju Island
Jeon, Byong-Tae ; Kim, Myeong-Hwa ; Park, Jae-Hyun ; Kim, Sung-Jin ; Sung, Si-Heung ; Lee, Sang-Moo ; Moon, Sang-Ho ;
Journal of The Korean Society of Grassland and Forage Science, volume 29, issue 4, 2009, Pages 365~374
DOI : 10.5333/KGFS.2009.29.4.365
This study was carried out in thoroughbred colts grazed in pasture at summer season of Jeju island, Korea, from June 23 to 29 in 2007. We investigated the behavioral pattern of the thoroughbred colts (n=23) at the age of 3-year-old (n=11) and 1-year-old (n=12). The group behavioral pattern of thoroughbred colts was different according to the age. It was shown that eating 56%, standing 23%, lying 10%, walking 5%, running 2.5% and drinking 3% in the 1-year-old thoroughbred colts group. Especially, it was significantly individual difference (P<0.05) in the average behavioral expression ratio of 1-year-old thoroughbred colts (n=3), which was eating 53%, standing 29%, lying 11%, walking 5%, drinking 1% and running 1%. On the other hand, it was investigated that eating 54%, standing 27%, walking 13%, running and drinking 1.5%, lying 1% in the 3-year-old thoroughbred colts group. Also, the individual behavioral expression ratio of the 3-year-old thoroughbred colts was eating 53%, standing 32%, walking 10%, running and drinking 1%, which was a similar pattern to the result of 1-year-old colts. It is considered that this is the first study regarding a pasturage action of a racehorse produced in Korea. These data cannot be enough, but this data will be based on the production of racehorses and fostered in the management.
Effects of Forage Source and Shipping Time on Growth Performance and Carcass Characteristics of Hanwoo Steers
Cho, Won-Mo ; Chang, Sun-Sik ; Cho, Young-Moo ; Kim, Hyeong-Cheol ; Kwon, Eung-Gi ; Yang, Seung-Hak ; Paek, Bong-Hyun ;
Journal of The Korean Society of Grassland and Forage Science, volume 29, issue 4, 2009, Pages 375~382
DOI : 10.5333/KGFS.2009.29.4.375
This study examined the influence of forage source (grass hay and rice straw) and shipping time (24, 26, 28 and 30 months) on feed conversion ratio, growth performance and carcass characteristics of Hanwoo steers. Sixty four Hanwoo steers at 6 months age were fed either grass hay (n=32) or rice straw (n=32) for 24, 26, 28 and 30 months of age. Steers fed on mixed grass hay gained significantly higher body weight at 24, 26, 28 and 30 months compared with those fed on rice straw. Feed efficiency was slightly better in steers fed mixed grass hay compared to those fed rice straw. Back fat thickness and marbling score were increased with the age of steers (p<0.05). Carcass quality traits (meat color, fat color, texture and maturity) were not affected by forage source and shipping time. Shear force, cooking loss and water holding capacity of beef were reduced with advancing age of steers (p<0.05). Moisture content was lower and fat content was higher in beef produced from steers fed mixed grass hay than those fed rice straw (p<0.05). Beef juiciness was reduced with the advancing shipping time of steers. In conclusion, it would be beneficial to feed hay compared with rice straw during whole period of Hanwoo steer to produce high quality beef.
A Study on the Dry Matter Intake, Body Weight Gain and Required Animal Unit of Grazing Dairy Goats (Saanen) in Mixture
Lee, In-Duk ; Lee, Hyung-Suk ;
Journal of The Korean Society of Grassland and Forage Science, volume 29, issue 4, 2009, Pages 383~388
DOI : 10.5333/KGFS.2009.29.4.383
This study was conducted to investigate the dry matter intake, weight gain and the required area of grazing pasture for dairy goats. The experimental trials were conducted from April, 2007 to June, 2008 at the animal experimental station in Chungnam National University. The seed mixtures of grazing pasture were composed of orchardgrass (40%) + tall fescue (20%) + perennial ryegrass (10%) + alfalfa (15%) + red clover (15%). The grazing area was
which was composed of 4 paddocks (average
/plot) and the goats were grazed twelve times by a rotational grazing system. The dairy goats (Saanen) were selected which had nearly the same body weight (average 31.1kg). The average chemical composition of herbage of mixture in grazing periods was crude protein (20.4%), NDF (65.3%) and ADF (31.1%) respectively and the in vitro dry matter digestibility was 68.9%. The average dry matter intake amount per head was 1.253 kg, and the intake amount per body weight was 3.01%. The average body weight gain during the grazing periods (184 days) was 17.4 kg, and the daily gain was 98 g. The required area of grazing pasture was calculated at
a dairy goat (weight 50 kg basis). This figure, being converted into animal unit (AU), corresponded to approximately 2.14 AU/ha.
Effects of Feeding Total Mixed Rations Containing Different Winter Forage Crop Silages on Feed Intake, Nutrient Digestibility and Blood Characteristics in Korean Black Goats
Jung, Gi-Woung ; Jo, Ik-Hwan ; HwangBo, Soon ; Lee, Sung-Hoon ;
Journal of The Korean Society of Grassland and Forage Science, volume 29, issue 4, 2009, Pages 389~398
DOI : 10.5333/KGFS.2009.29.4.389
This study was conducted to determine the feed value of total mixed rations (TMR) containing different winter forage crop silages on feed intakes, daily gain, nutrient digestibility, and nitrogen retention in Korean black goats. A total of 12 male goats were used in this study and each goat was housed in individual metabolism crates. The treatments were four diets, consisting of whole crop barley silage (T1), rape silage (T2), rye silage (T3), and Italian ryegrass silage (T4). The experiment was designed as a
Latin square arrangement in three replicates. Daily intakes for dietary dry matter (DM), organic matter (OM), crude protein (CP) per head were highest in rape silage treatment, and lowest in whole barley silage (p<0.05). Digestible intakes for CP and acid detergent fiber were highest in rape silage treatment. The daily gain of rape, rye, and Italian ryegrass silages were significantly (p<0.05) higher than that of whole crop barley silage. Digestibility of DM. CP, fiber were highest in whole crop barley silage, and lowest in rape silage (p<0.05). Nitrogen (N) intake and N retention were significantly highest in rape silage and lowest in whole crop barley silage (p<0.05). The results showed that, among different winter forage crop silages, rape silage incorporation into TMR had the best performances indicating increases of feed intakes and N retention in Korean black goats.