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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 33, Issue 4 - Dec 2013
Volume 33, Issue 3 - Sep 2013
Volume 33, Issue 2 - Jun 2013
Volume 33, Issue 1 - Mar 2013
Selecting the target year
Growth Characteristics and Productivity of Single Cross Maize Hybrid for Grain, `Andaok`
Son, Beom Young ; Baek, Seong Bum ; Kim, Jung Tae ; Lee, Jin Seok ; Ku, Ja Hwan ; Kwon, Young Up ; Huh, Chang Suk ; Park, Jong Yeol ;
Journal of The Korean Society of Grassland and Forage Science, volume 33, issue 1, 2013, Pages 1~5
DOI : 10.5333/KGFS.2013.33.1.1
Andaok, a new single cross variety, is a yellow dent maize hybrid (Zea mays L.) developed by the maize breeding team at the National Institute of Crop Science (NICS), RDA in 2011. This hybrid, which has a high yield of grain, was produced by crossing two inbred lines, KS161 and KS162. KS161 is the seed parent and KS162 is the pollen parent of Andaok. Silking date of Andaok is 3 days later than that of the check hybrid, Jangdaok. Plant height of Andaok is longer than that of Jangdaok. Ear numbers per 100 plants of Andaok is more than that of Jangdaok. Ear length of Andaok is shorter than that of Jangdaok. The weight of 100 seeds of Andaok is heavier than that of Jangdaok. It has moderate resistance to southern corn leaf blight (Bipolaris maydis), black streaked dwarf virus (BSDV) and corn borer. It has strong resistance to northern corn leaf blight (Exserohilum turcicum). It has resistance to lodging. Andaok was evaluated for its yield of grain at three locations from 2009 to 2011. The grain yield of Andaok was 7.80 ton/ha. Seed production of Andaok has gone well due to a good match during crossing between the seed parent, KS161, and the pollen parent, KS162, in Yeongwol.
Growth Characteristics and Productivity of New Orchardgrass (Dactylis glomerata L.) Cultivar, "Onnuri"
Ji, Hee Chung ; Lee, Sang Hoon ; Kim, Gi Yong ; Choi, Gi Jun ; Park, Nam Gun ; Lee, Ki Won ;
Journal of The Korean Society of Grassland and Forage Science, volume 33, issue 1, 2013, Pages 6~9
DOI : 10.5333/KGFS.2013.33.1.6
"Onnuri" is a new orchardgrass (Dactylis glomerata L.) cultivar developed by the National Institute of Animal Science (NIAS) in 2011. To develop the new variety of orchardgrass, 5 superior clones were selected and polycrossed for seed production. The agronomic growth characteristics and forage productivity of "Onnuri" were examined at Cheonan from 2009 to 2011, and regional trials were conducted in Cheonan, Pyeongchang, Jinju and Jeju from 2009 to 2011, respectively. "Onnuri" showed medium type growth habit in fall and spring, and medium in length of flag leaf and long upper internode. Plant height of "Onnuri" was 5cm more than that of the standard cultivar, "Amba" and the heading date was 5 days earlier than that of Amba (16th May). Characteristics, such as waterlogging and disease resistance, of "Onnuri" were stronger or better than those of Amba, Especially, dry matter yield of "Onnuri" (14,775 kg/ha) increased by 18% compared to that of Amba (12,523 kg/ha). Nutritive values appeared to be similar in both varieties.
A Very Early-Maturing Italian Ryegrass (Lolium multiflorum Lam.) New Variety, `Green farm II`
Ji, Hee Chung ; Choi, Gi Jun ; Lee, Sang Hyun ; Kim, Ki-Yong ; Lee, Ki Won ; Park, Nam Gun ; Lee, Eun Sup ;
Journal of The Korean Society of Grassland and Forage Science, volume 33, issue 1, 2013, Pages 10~14
DOI : 10.5333/KGFS.2013.33.1.10
This experiment was carried out to breed an early maturing variety of Italian ryegrass (Lolium multiflorum Lam.) in the Grassland and Forage Crops Division, National Institute of Animal Science, RDA, Cheonan from 2009 to 2011. A new variety, `Green farm II` is a diploid with green leaves and has a semi-erect growth habit in late autumn and erect growth habit in early spring, respectively. `Green farm II` was on the
of April in the heading date as an early-maturing variety. `Green farm II` was also wider by 0.6 mm in flag leaf width, shorter by 1 cm in flag leaf length and shorter by 1 cm in plant length than those of the control variety, `Florida 80`, respectively. `Green farm II` was thicker by 0.7 mm in stem thickness and strong in winter hardness. Dry matter (DM) yield (11,452 kg/ha) of `Green farm II` was similar to that of `Florida 80`. In vitro dry matter digestibility (IVDMD), total digestible nutrients (TDN), and relative feed value (RFV) of `Green farm II` were 70.6%, 63.9%, and 114% higher than those of `Florida 80`, respectively. Acid detergent fiber (ADF) and neutral detergent fiber (NDF) of `Green farm II` were 31.7% and 52.6% which were 3.5% and 6.4% lower than those of `Florida 80`, respectively.
Optimum Harvest Stage of Italian Ryegrass `Kowinearly` According to One and Two Harvests During Spring Season
Seo, Sung ; Kim, Meing Jooung ; Kim, Won Ho ; Lee, Sang Hak ; Jung, Min Woong ; Kim, Ki Yong ; Ji, Hee Chung ; Park, Hyung Soo ; Kim, Jong Geun ; Choi, Gi Jun ;
Journal of The Korean Society of Grassland and Forage Science, volume 33, issue 1, 2013, Pages 15~20
DOI : 10.5333/KGFS.2013.33.1.15
This study was carried out to determine the optimum harvest stage of Italian ryegrass (Lolium multiflorum Lam., IRG) for maximum forage production during the spring season in Suwon, 2010. The variety of IRG was the early maturity type, `Kowinearly`, and six harvest stages (treatments) were first heading (T1), heading (T2), late heading to early bloom (T3), bloom to late bloom (T4), ripeness (T5), and late ripeness stage (T6). The dates of the first heading and heading of `Kowinearly` were seen on 4 to 5 May, and 14 May, respectively. Plant length and dry matter (DM) percentage at first harvest were from 69 cm and 14.8% at T1 stage to 103 cm and 35.0% at T6 stage, respectively. The content of crude protein (CP) and in vitro DM digestibility (IVDMD) of T1, T2, T3, T4, T5 and T6 at first harvest were 15.6%, 10.6%, 10.1%, 8.1%, 7.3% and 5.4%, and 81.8%, 72.1%, 64.8%, 63.8%, 61.4% and 59.0%, respectively. The content of neural detergent fiber (NDF) and acid detergent fiber (ADF) were increased continuously with delayed harvest. A significantly higher yield of DM, CP and in vitro digestible DM (IVDDM) were observed for T3, and T4 (p<0.05). DM yield of 3,526 kg, 6,278 kg, 7,842 kg, 8,984 kg, 8,346 kg and 8,008 kg/ha, CP yield of 549 kg, 665 kg, 795 kg, 725 kg, 608 kg and 430 kg/ha, and IVDDM of 2,883 kg. 4,526 kg, 5,083 kg, 5,728 kg, 5,124 kg and 4,722 kg/ha at first harvest were recorded in T1, T2, T3, T4, T5 and T6, respectively. Regrowth yield of DM, CP and IVDDM were shown to be higher at T1 and T2 (p<0.05). However, no significant differences were observed between the two stages. Daily DM and DDM production of regrowth IRG were higher at T2, followed by T1. The total yield (at first and at regrowth) of DM, CP and IVDDM were significant higher for T2, followed by T3, T4 and T1 in order. At T2 stage, the yield was 11,089 kg, 1,254 kg, and 7,669 kg/ha in DM, CP, and IVDDM. In conclusion, the late heading to bloom stage was determined to be the optimum harvest stage for a single harvest, while the heading stage was a suitable stage of first harvest of `Kowinearly` where two harvests were sought in a single year.
The Studies on Real Condition of Mycotoxin Contamination in the Fields before Harvest and by the Storage of Rice Straw using as Roughage in Korea
Sung, Ha Guyn ;
Journal of The Korean Society of Grassland and Forage Science, volume 33, issue 1, 2013, Pages 21~29
DOI : 10.5333/KGFS.2013.33.1.21
The studies were conducted to investigate real condition of mycotoxin contamination in the fields before harvest and by the storages of rice straw used as roughage in Korea. It was found mycotoxin contamination before harvest of rice straw that the rice plants were detected deoxynivalenol at the initial growth, ochratoxin A and deoxynivalenol at the middle growth, and deoxynivalenol and zearalenone at the harvest periods in the fields. Also, the rice plants were contaminated by various fungi such as Fusarium sp., Fusarium proliferatum, Penicillium sp., Gibberella sp., Gibberella zeae, Mucor circinelloides and Aspergillus oryzae. The levels of fungal contamination were
cfu/g at the initial growth, and
cfu/g at the middle growth and harvest periods. All storage types of rice straw were contaminated with zearalenone, deoxynivalenol and ochratoxins A. The samples of rice straw contaminating mycotoxins were account for 3% in bundle rice straw, and 38% in both types of square rice straw and rice round bale silage, respectively. When 105 samples of rice bale silage were analyzed for mycotoxins depending on the regional area, mycotoxin contamination was found in 46% of total samples in Korea. Regional contaminations of mycotoxins were respectively 48, 33, 40, 50 and 57% of samples in Gyeonggi, Gangwon, Chungcheng, Yeongnam and Honam area. Rice round bale silage was contaminated by three kinds of mycotoxins (zearalenone, deoxynivalenol and ochratoxinsA) in the all of area without Chungcheong area where was contaminated zearalenone and deoxynivalenol. Ochratoxins A, deoxynivalenol and zearalenone were respectively determinated with the average levels of 2.6, 413 and
in rice round bale silage for the overall area, even if it was some difference depending on each regional area. Therefore, the above results clearly show that the rice straws were exposed to the contamination by mycotoxin and mycotoxigenic fungi before harvest in the fields, and mycotoxin contamination was not dependent on the regional area or the storage types such as bundle rice straw, square rice straw and rice round bale silage.
Study on Nutritive Values of Whole Crop Barley Varieties Grown in a Paddy Field
Lee, Sang Moo ; Kim, Eun Joong ;
Journal of The Korean Society of Grassland and Forage Science, volume 33, issue 1, 2013, Pages 30~38
DOI : 10.5333/KGFS.2013.33.1.30
This study was carried out to investigate the growth characteristics, yield, chemical compositions and nutritive yield of whole crop barley varieties harvested in a paddy field. The experimental design was arranged in a randomized block design with three replications. The treatments consisted of five whole crop barley varieties (Yuyeon, Youngyang, Wooho, Dami, Soman). The planting date was on 21 October 2009 and the samples were harvested on 21 May 2010. Dry matter yield was higher in Youngyang and Dami than other varieties (p<0.05). Crude protein, crude fat, crude ash, ADF and TDN were not significantly different. Crude fiber was the highest at Dami (31.4%), and Youngyang (31.4%) exhibited the lowest crude fiber compared to other varieties (p<0.05). NDF was higher in the order of Wooho > Dami > Soman > Yuyeon > Youngyang (p<0.05). Total mineral content was higher in the order of Youngyang > Wooho > Dami > Soman > Yuyeon (p<0.05). The contents of both essential and non-essential amino acids were not different among whole crop barley varieties. Yields of crude protein was the highest in Wooho (p<0.05), and yields of mineral, amino acid, free sugar and TDN were the highest in Youngyang. Based on the results from this study, it can be suggested that Youngyang and Wooho showed to have higher productivity and high nutritive values compared to other varieties.
A Nutritional Evaluation on Whole Cottonseed Removed Germination Ability by Heat-treatment
Hahm, Sahng-Wook ; Son, Heyin ; Baek, Seong-Gwang ; Kwon, Hyeok ; Kim, Wook ; Oh, Young-Kyoon ; Son, Yong-Suk ;
Journal of The Korean Society of Grassland and Forage Science, volume 33, issue 1, 2013, Pages 39~44
DOI : 10.5333/KGFS.2013.33.1.39
In Korea, wide spread use of whole cottonseed, which is primarily a GMO plant imported from foreign countries and being fed to animals as raw state, has aroused concern that it may disturb the existing ecology of the country unless dispersion of the seed is under proper control. The objective of this study was to elucidate the changes in various nutritive parameters due to heat treatment and to determine the effective condition for removing germination ability of whole cottonseed (WCS). Of the various temperatures applied (76, 78, 80, 85,
for 30 min was confirmed to be the lowest temperature treatment which resulted in a complete removal of the germination ability of WCS. Therefore, based on the determined temperature condition (
30 min) we tried to examine the changes of various nutritional parameters, including nutrient composition, in vitro digestibilities and ruminal protein degradabilities, comparing raw whole cotton seed (RWCS) and heated whole cotton seed (HWCS). Some changes in amino acid composition were observed with heat treatment of WCS, but these were regarded to originate from the variation in plant quality and seed morphology, which are usually affected by different environmental factors during the vegetation period. As for fatty acid composition, no significant differences were observed to occur during heat treatment. However, WCS heated at
for 30 min in a circulating oven showed a significant decrease (p<0.05) of in situ rumen degradability in both dry matter (DM) and crude protein (CP), as compared to raw WCS. Overall results obtained in the study indicate that the heating condition used in this study, which was proven to be the most appropriate and economic to remove germination ability of WCS, may also improve the nutritional value of the ruminant with regard to reducing its protein degradability within the rumen.
Effect of Forage Feeding Level on the Milk Production Characteristics of Holstein Lactating Cows
Lee, Bae Hoon ; Nejad, Jalil Ghassemi ; Kim, Hyeon Shup ; Sung, Kyung Il ;
Journal of The Korean Society of Grassland and Forage Science, volume 33, issue 1, 2013, Pages 45~51
DOI : 10.5333/KGFS.2013.33.1.45
This study was performed on two groups (10 cows) for primiparous Holstein lactating cows (av. 98 days in milk : DIM) which were divided into low forage diet (LF) and high forage diet (HF) groups based on forage : concentrate ratio (F : C ratio). The F : C ratios of LF and HF groups were 37:63 and 62:38, respectively. Concentrate intake was significantly higher in the LF group than the HF group whereas the HF group showed higher forage intake (12.9 kg) compared to the LF group (7.4 kg) (p<0.05). No significant difference was observed in total feed intake between the HF (20.9 kg) and LF (19.4 kg) group (p>0.05), but the HF group tended to be higher. CP, TDN and NEL intake showed no significant difference between the two groups (p>0.05). Though, there was no significant difference on actual milk between the two groups (26 vs. 23.9 kg/d, p>0.05), the LF group tended to be higher. 4% FCMs of LF and HF groups were 22.8 and 22.3 kg/d, respectively, and showed no significant difference (p>0.05). The HF group was higher in fat content and lower in MUN. C14:0, C16:0 and C16:1n7 of milk fatty acid were significantly higher in the HF group (p<0.05), but there were no differences in other milk fatty acids between the two groups. As a result, increasing high quality forage such as BIRG silage and hay in the diet will not only fulfill nutrient requirements but also reduce milk production.
The Effect of Feeding Whole-crop Barley Silage and Grass Hay on Productivity and Economic Efficiency in Elk (Cervus canadensis)
Kim, Sang Woo ; Suh, Sang Won ; Kim, Dong Hoon ; Kim, Jae Hwan ; Kim, Young Sin ; Kim, Kwan Woo ; Yoon, Sei Hyung ;
Journal of The Korean Society of Grassland and Forage Science, volume 33, issue 1, 2013, Pages 52~57
DOI : 10.5333/KGFS.2013.33.1.52
This study was conducted to determine the effect of dietary whole-crop barley silage on the daily feed intake, daily weight gain, velvet antler yield and economic efficacy in elk during growth. A total of 21 elk (average BW 303 kg, 5 years old) were allotted randomly to three treatments. The three treatments were T1 (hay diet), T2 (whole-crop barley silage), and T3 (50% hay + 50% whole-crop barley silage). The average daily weight gain of T3 was higher than the others throughout the entire experimental period. The average daily feed intake of elk in decreasing order was as follows; T1>T3>T2. The velvet antler yield was higher in T3 group (8,585 g) compared with T1 (8,037 g) and T2 (7,713 g). However, there were no significant differences in the average daily feed intake, average daily weight gain, or velvet antler yield (p>0.05). In economic efficacy, T3 was gained about 29~43% more value than T1 or T2. In conclusion, the mixed feeding of 50% hay and 50% whole-crop barley silage was more effective than feeding hay of barley alone, in terms of average daily weight gain, velvet antler yield, and economic efficacy in elk.
Effects of Temperature and Time for Heating and Filler Content on the Activities of Xylanase, Cellulase and Amylase in Slaughterhouse Rumen Content
Won, Mi Young ; Lee, Do Hyung ; Kim, Eun Joong ;
Journal of The Korean Society of Grassland and Forage Science, volume 33, issue 1, 2013, Pages 58~66
DOI : 10.5333/KGFS.2013.33.1.58
This study was conducted in order to develop slaughterhouse rumen content (SRC) as a potential feed additive. The moisture content of SRC can reach 80%, and therefore an appropriate dewatering process is required before it can be used. In this study, the effects of heating temperature, heating time, and filler content during the dewatering process on the activity of various enzymes in SRC were investigated. The Box-Behnken experimental design was employed, involving a total of 45 experimental runs, consisting of three variables (heating time, heating temperature, and filler content) with three levels per variable (12, 30 and 48 hr; 60, 75 and
; 12, 22.5 and 33% for heating time, heating temperature, and filler content, respectively). For enzyme activities, xylanase, cellulase, and amylase were examined, and the results were subjected to an analysis of variance. Heating time, heating temperature and filler content had significant effects on the activity of each enzyme (p<0.05). Cellulase and amylase activities decreased (p<0.05) at elevated heating temperatures, whereas xylanase was reasonably stable around
. The activities of all enzymes decreased (p<0.05) with increased heating time. Optimum filler contents for xylanase, cellulase, and amylase activities were 22.5, 12 and 33%, respectively. However, optimum conditions for all variables that simultaneously maximize the activity of all three enzymes could not be ascertained in this study. Nevertheless, the results from the current study can be useful as basic information for the development of SRC as a feed additive enriched with improved major enzymes for livestock feed digestion.