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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
Journal Basic Information
Journal DOI :
The Korean Society of Grassland and Forage Science
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Volume & Issues
Volume 35, Issue 4 - Dec 2015
Volume 35, Issue 3 - Oct 2015
Volume 35, Issue 2 - Jun 2015
Volume 35, Issue 1 - Mar 2015
Selecting the target year
Effects of the Grazing of Korean Black Goats on Their Reproductive Performance and Growth Performance of Goatlings
Hwangbo, Soon ;
Journal of The Korean Society of Grassland and Forage Science, volume 35, issue 1, 2015, Pages 1~5
DOI : 10.5333/KGFS.2015.35.1.1
This study assessed the impacts of grazing and barn feeding on the reproductive performance of black goats and the growth performance of goatlings to gather basic data for the establishment of an ideal goat-breeding system. A total of 36 Korean black goats were grouped by feeding system (a pasture grazing group and a barn feeding group, n=18) over the 8-month study period from April to November 2011. The difference between the singleton pregnancy rate of the grazing group, measured at 31.5%, and the barn-feeding group's 37.0% was not statistically significant. Also, breeding type did not yield any meaningful differences, with 1.76 live births recorded for the grazing group and 1.69 recorded for the barn-feeding group. In regard to weaner goats, the grazing group showed a higher number compared to the barn-feeding group (p=0.11). The birth weight of the grazing group was measured at 2.3 kg, while that of the barn-feeding group was 2.29 kg, with breeding type yielding no significant differences. The grazing group's weight at 90 days of age was 9.97 kg, which was higher than the barn-feeding group's 9.45 kg (p=0.09). The grazing group showed higher daily weight gain during the lactation period than the barn-feeding group (p=0.13). Overall, with breeding type considered, the grazing group did not show significant differences in terms of the number of live births and birth weights compared to the barn-feeding group; however, the grazing group showed better outcomes in terms of daily weight gain. As it has been shown that grazing satisfies the physiological needs of goats more effectively than barn feeding, we believe that it contributes to the farming of healthy goats.
Effect of Film Layers and Storing Period on the Fermentation Quality of Whole Crop Barley Silage
Song, Tae-Hwa ; Park, Tae-Il ; Park, Hyong-Ho ; Yoon, Chang ; Kim, Yang-Kil ; Park, Jong-Chul ; Kang, Chon-Sik ; Son, Jae-Han ; Kim, Kyong-Ho ; Cheong, Young-Keun ; Oh, Young-Jin ;
Journal of The Korean Society of Grassland and Forage Science, volume 35, issue 1, 2015, Pages 6~11
DOI : 10.5333/KGFS.2015.35.1.6
This study was undertaken to characterize feed value and silage quality according to storage period and film layers for whole-crop barley silage. The crude protein (CP) content increased in all silage during the storage periods compared to those before silage, this content slightly increased over the prolonged storage period but it was not significant (p>0.05). Depending on the film layers of silage, 6 layers were higher than 4 layers. The neutral detergent fiber (NDF) and acid detergent fiber (ADF) contents also increased in all silage during storage periods compared to those before silage (P<0.05), but they were maintained at similar levels during the storage period. Depending on the film layers of silage, 6 layers were higher than 4 layers. The total digestible nutrients (TDN) content decreased in all silage during the storage periods. However, it was maintained at a similar level for the duration of each storage period. Depending on the film layers of silage, 6 layers were lower than 4 layers. The pH value was decreased during the prolonged storage period and depending on the film layers, 6 layers were lower than 4 layers. In the organic acid contents during the prolonged storage period, lactic acid increased, acetic acid was lower, and butyric acid was significantly higher (p<0.05). Depending on the film layers, 6 layers showed higher levels of lactic acid and lower levels of butyric acid (p<0.05). Therefore, these results showed that 6 layer wrapping was advantageous for long term storage of whole crop barley silage, while also indicating that it is desirable to use 4 layer wrapping within a six month period.
Effects of Physically Effective Neutral Detergent Fiber Content of TMR Feed on the Productivity and Carcass Characteristics in Hanwoo (Bos taurus coreanae) Steers
Jeon, Byong Tae ; Park, Jae Hyun ; Cho, Won Mo ; Kim, Sang Woo ; Jang, Se Young ; Moon, Sang Ho ;
Journal of The Korean Society of Grassland and Forage Science, volume 35, issue 1, 2015, Pages 12~16
DOI : 10.5333/KGFS.2015.35.1.12
This study was carried out to evaluate accurately physical characteristics of total mixed rations (TMR) by investigating the effects of physically effective neutral detergent fiber content on the growth performance and carcass characteristics in fattening steers. Twelve Hanwoo (Bos Taurus coreanae) steers aged 26 months were used in this trial. Steers were offered one of two total mixed ration (TMR) diets - High or Low physically effective neutral detergent fiber (peNDF) content groups-that were differentiated by mixing time. The carcass traits of the experimental animals were evaluated by Korea Institute for Animal Products Quality Evaluation (KAPE) after slaughter. Body weight gain during the experimental period was significantly higher (P<0.05) in the High group (
) compared with the Low group (
), and daily weight gain was also high in the former. Although there was no significant difference, the carcass weight was higher in the High group (
) compared with the Low group (
). However, the beef quality grade of the Low group (
) was higher than that of the High group (
). Increases in body weight gain, daily gain, and carcass weight for the High group were mainly influenced by a high level of dry matter (DM) intake and digestibility; consequently, back-fat thickness increased and the beef quality grade was lowered. Because growth performance and carcass characteristics were affected by the physical traits of the diet, we suggested that proper peNDF content is also needed for fattening steers.
Effect of Seeding Method and Pre-emergence Herbicides on Plant Growth and the Production of Sorghum × Sudangrass Hybrid
Jung, Jeong Sung ; Lee, Ki-Won ; Choi, Ki Choon ; Ji, Hee Jung ; Park, Hyung Soo ; Kim, Won Ho ; Kim, Young-Jin ; Lee, Sang Hak ; Lee, Sang-Hoon ;
Journal of The Korean Society of Grassland and Forage Science, volume 35, issue 1, 2015, Pages 17~25
DOI : 10.5333/KGFS.2015.35.1.17
The following experiments were used to evaluate the effect of seeding method and pre-emergence herbicides on weed control and the production of the
[sorghum bicolor (L.) Moench] hybrid under field and in vitro conditions. Under the in vitro condition, we evaluated how different kinds of herbicides affect the rate of seed germination and the growth of early seedlings in the
hybrid treated with herbicides. Simazine, alachlor, and methabenzthiazuron were used, and their concentration levels were 0%, 40%, 70%, and 100%. The germination ratio of the seeds was reduced by the application of simazine, methabenzthiazuron, and alachlor compared with the control (distilled water). The alachlor application severely decreased the sorghum germination ratio. However, seed germination was not greatly influenced by the concentration level of the herbicides. Root and shoot length were increased in the following order: control > simazine > methabenzthiazuron > alachlor. Overall, alachlor significantly reduced root length more than shoot length. The differential tolerance of the
hybrid to pre-emergence herbicides by seeding method was then tested under the field condition. The plants were severely injured by the alachlor application, leading to a great reduction in the number of stems. However, for the simazine and methabenzthiazuron applications the number of stems lost was slightly lower than it was for the alachlor and simazine + alachlor applications. In the seeding method, drilling was more effective in reducing herbicide injury than broadcasting. All of the herbicides effectively controlled weeds. The simazine and methabenzthiazuron applications showed a significantly higher dry matter (DM) yield. However, the alachlor and simazine + alachlor applications severely reduced the DM yield. This result suggests that the alachlor application has a significant effect on plant production. Similarly, the total digestible nutrient (TDN) yield was greatly reduced by the alachlor and simazine + alachlor applications. From the results presented above, we concluded that the yield of DM was the highest for broadcasting with no herbicide. and drilling was the most-effective way to reduce herbicide injury. The simazine application was the most-effective herbicide, showing the highest forage yield and TDN yield.
Development and Characterization of Tall fescue Variety 'Greenmaster2ho'
Lee, Sang-Hoon ; Kim, Ki-Yong ; Ji, Hee Jung ; Hwang, Tae Young ; Park, Hyung Soo ; Chae, Hyun Seok ; Lee, Ki-Won ;
Journal of The Korean Society of Grassland and Forage Science, volume 35, issue 1, 2015, Pages 26~30
DOI : 10.5333/KGFS.2015.35.1.26
A new tall fescue variety (Festuca arundinacea Schreb.) named 'Greenmaster2ho' was developed by the National Institute of Animal Science, Rural Development Administration, in Cheonan, Korea from 2010 to 2014. For the synthetic seed production of this new variety, 5 superior clones were selected and polycrossed: 09XFa02, 09XFa03, 09XFa11, 09XFa13, and 09XFa14. The agronomic growth characteristics and forage production capability of the seeds were studied at Cheonan from 2010 onward, and regional trials were conducted in Cheonan, Hoengseong, Jeju, and Jinju from 2012 to 2014. Greenmaster2ho showed resistance to disease, persistence, and regrowth ability that were all enhanced when compared with Fawn. At 15,119 kg/ha, the dry matter (DM) yield of Greenmaster2ho was 29% higher than that of Fawn, but the nutritive value of both varieties as forage was similar. This study aimed to make a contribution to the vitalization of the Korean grassland industry by developing a new tall fescue variety with excellent environmental adaptability.
A Very Early-Maturing Italian Ryegrass (Lolium multiflorum Lam.) New Variety, 'Greenfarm3ho'
Ji, Hee Chung ; Whang, Tae Young ; Kim, Ki-Yong ; Choe, Hyunsoak ; Hong, Ki Hung ; Choe, Kuh Wann ; Lee, Ki-Won ; Lee, Sang-Hoon ;
Journal of The Korean Society of Grassland and Forage Science, volume 35, issue 1, 2015, Pages 31~35
DOI : 10.5333/KGFS.2015.35.1.31
This experiment was carried out to breed a very early-maturing variety of Italian ryegrass (Lolium multiflorum Lam.) in the Grassland and Forage Crops Division, National Institute of Animal Science, RDA, Cheonan, Korea from 2012 to 2014. New variety "Greenfarm3ho" is a diploid variety with a green leaf color, a semi-erect growth habit in late autumn/fall, and an erect growth habit in early spring. With a heading date of April 27, Greenfarm3ho was categorized as an early-maturing variety. Compared with the "Greenfarm" control variety, Greenfarm3ho's flag-leaf width was narrower by 0.5 mm, its flag-leaf length was longer by 4.4 cm, and its plant length was longer by 3 cm; additionally, Greenfarm3ho's stem thickness was 0.1 mm thicker and it showed winter hardiness. The dry matter (DM) yield (8,976 kg/ha) of Greenfarm3ho was similar to that of Greenfarm. The in vitro dry matter digestibility (IVDMD), total digestible nutrient (TDN), and crude protein (CP) of Greenfarm3ho were 70.0%, 64.1%, and 1.0%, respectively, which are higher than those of Greenfarm by 2.9%, 2.0%, and 1.4%, respectively. The acid detergent fiber (ADF) and neutral detergent fiber (NDF) content of Greenfarm3ho were 31.4% and 53.3%, respectively, which are lower than those of Greenfarm by 2.5% and 3.0%, respectively.
Comparison of Growth Characteristics, Forage Production and Feed Values of Bermudagrass, Teffgrass and Kleingrass as Annual Forage Crop in Summer
Park, Hyung Soo ; Choi, Ki Choon ; Kim, Ji Hea ; Lee, Sang-Hoon ; Jung, Jong Seong ;
Journal of The Korean Society of Grassland and Forage Science, volume 35, issue 1, 2015, Pages 36~42
DOI : 10.5333/KGFS.2015.35.1.36
This study was conducted from 2013 to 2014 to explore the feasibility of the cultivation of warm-season grass as an annual Korean forage crop, while concurrently evaluating the characteristics and forage production of warm-season grass in Korea. The experimental design was a randomized block design (RBD) with three replications. Five bermudagrass [Cynodon dactylon (L.) Pers.] cultivars, two teffgrass (Paspalum notatum Flugge) cultivars, and a Kleingrass [Panicum coloratum L.] cultivar were compared for forage production and quality in the middle region of Korea. After seeding, the numbers of days until seedling emergence for bermudagrass and kleingrass were observed at approximately day 11 and day 12, respectively. The heading dates of teffgrass and kleingrass were on July 12 and July 26, respectively. The dry matter (DM) yield of bermudagrass Tifton 85 was usually greater than the other entries. The crude protein content (CPC) and total digestibility nutrient (TDN) for the teffgrass cultivars were usually greater than the other entries at all study sites. The acid detergent fiber (ADF) and in vitro DM digestibility (IVDMD) were similar across all cultivars.
Growth Characteristics and Yield Comparisons of Domestic and Foreign Italian ryegrass (Lolium multiflorum Lam) Varieties in Yecheon area of Korea
Kim, Ki-Yong ; Lee, Sang-Hoon ; Ji, Hee Chung ; Hwang, Tae-Young ; Lee, Ki-Won ; Park, Sung Min ;
Journal of The Korean Society of Grassland and Forage Science, volume 35, issue 1, 2015, Pages 43~49
DOI : 10.5333/KGFS.2015.35.1.43
This experiment was conducted to evaluate the agronomic characteristics and forage productivity of Italian ryegrass cultivars in Yecheon, Kyeongbuk from 2011 to 2013. The experimental design was a randomized complete block design (RCBD) with three replications. Italian ryegrass cultivars were seeded on Sep. 26 in 2011 and Sep. 25 in 2012. The Italian ryegrass cultivars were harvested on the heading date of the variety. The cold-resistance of domestic cultivars was stronger than other foreign varieties. Among early-maturing cultivars, the dry matter (DM) yield of the "Kowinearly" was 10,031 kg/ha, which was significantly higher than that of other cultivars (p<0.05). In medium-maturing cultivars, the DM yield of the "Kowinmaster" and "Tam 90" were 10,484 and 8,191 kg/ha, respectively. Of the two, the former's DM yield was higher than the latter's (p<0.05). Among late-maturing cultivars, the DM yield of "Hwasan 104" was 10,641 kg/ha, which was similar to that of "Hwasan 101" and significantly higher than the other late-maturing cultivars (p<0.05). According to the results obtained from this study, an early-maturing variety with cold-tolerance and high productivity is required for the paddy field cultivation of an Italian ryegrass cultivar after rice harvest in the mid-northern region of Korea. A medium- or late-maturing variety is more advantageous for the field cultivation of the maximum quantity that is possible. In conclusion, to select which variety/ies to grow, the climate of the growing area, weather conditions, and the cropping system must all be considered.
Effect of Seeding Date and Varieties of Italian Ryegrass on Forage Yield and Quality of Early Spring-seeded at Paddy Field in Southern Region
Kim, Ki Soo ; Lee, Suk Kyung ; Choi, Young Sun ; Park, Do Hwan ; Ji, Hee Jung ; Jung, Jong Seong ; Choi, Ki Choon ; Kim, Won Ho ;
Journal of The Korean Society of Grassland and Forage Science, volume 35, issue 1, 2015, Pages 50~56
DOI : 10.5333/KGFS.2015.35.1.50
Italian ryegrass is generally cultivated by a winter forage in a paddy field, the harvest season overlaps with rice transplantion in some cases. In addition, farmers can miss the optimal seedtime for Italian ryegrass because of the rainy season. Therefore, this research was conducted between October 2012 and June 2013 in Kwangjin, Korea to examine the effect of spring-seeding on the yields and quality of Italian ryegrass for the determination of an alternative if the optimal seedtime is missed. This trial consists of four different seeding dates (15 February, 25 February, 5 March, and 15 March) and three varieties (Kowinmaster, Kowinearly, and Green farm). The Italian ryegrass varieties "Kowinmaster," "Kowinearly," and "Green farm" were sown on February 15. The heading date of each variety showed from May 12 to May 9 and interval time of five days but the Treatment of March 15 planting date showed three days interval. The Kowinmaster variety, planted on February 15, was 93.0 cm taller on March 15 with a height of 105.7 cm. The Kowinearly and Green farm varieties planted on February 15 were of a similar height on February 25 and received a poor lodging score when planted quickly. The dry matter (DM) yield of the Kowinearly planted on February 15 was high but that of Green farm was low at 6,609 kg/ha and a difference was not shown between the varieties. The DM yield was different for those varieties planted on February 15 and March 15 (P<0.05). The crude protein content (CPC) of those varieties planted on February 15 showed an average of 8.8%, while those that were planted on March 15 showed an average that was about 2.3% higher at 11.1%; furthermore, the latter also showed lower acid detergent fiber (ADF) and total digestible nutrient (TDN) contents, by 2.1% and 1.5%, respectively. The relative feed value was about 5.9% higher, depending on the seeding date, as well as being slower and showing less difference between the varieties. According to this study, Italian ryegrass planted in a paddy field of the southern region of Korea on February 25 will produce a high-quantity yield with nutritive value.
'Nokyang', Whole Crop Forage Barley Cultivar with the Stay-Green Character, Resistance to Viral Disease and High-Yielding
Park, Tae-Il ; Oh, Young-Jin ; Park, Hyoung-Ho ; Park, Jong-Chul ; Cho, Sang-Kyun ; Noh, Jae-Hwan ; Kim, Dae-Wook ; Song, Tae-Hwa ; Chae, Hyun-Seok ; Jeung, Jae-Hyun ; Hong, Ki-Heung ; Bae, Jeong-Suk ; Huh, Jae-Young ; Ku, Ja-Hwan ; Park, Ki-Hun ; Han, Ouk-Kyu ;
Journal of The Korean Society of Grassland and Forage Science, volume 35, issue 1, 2015, Pages 57~62
DOI : 10.5333/KGFS.2015.35.1.57
"Nokyang" (Hordeum vulgare L.), a new whole-crop silage barley cultivar, was developed by the breeding team at the Department of Rice and Winter Cereal Crop, National Institute of Crop Science, RDA, Korea in 2012. It was derived from combining "Nagyoung" and breeding line "SB77368-B-145". Among the combinations made in 2001, a promising line, "SB01T2017", showed good characteristics in terms of potential forage yield in the yield trial at Iksan from 2007 to 2009. In 2009, the promising line was designated as "Iksan457" and placed in regional yield trials at six locations around Korea for three years from 2010 to 2012, and was released under the name of "Nokyang." It has the growth habit of a group III creeping plant type, with a light-green leaf and common spike. Its average heading and maturing dates were on May 6 and June 4, respectively, which were later than cultivar "Youngyang." "Nokyang" also showed strong winter hardiness, and a resistance to shattering and barley yellow mosaic virus (BaYMV) similar to those of the check cultivar. The best thing among the traits of one is a new good quality with the plant green at the latter growing period. The average forage dry matter (DM) yields in the regional yield trial were about 12.8 and 11.5 MT
in upland and paddy field, respectively, which were higher than those of the check cultivar, by 7% and 2%, respectively. This cultivar would be suitable for an area of the Korean peninsula where the daily minimum temperature in January is above