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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 32, Issue 4 - Dec 2012
Volume 32, Issue 3 - Sep 2012
Volume 32, Issue 2 - Jun 2012
Volume 32, Issue 1 - Mar 2012
Selecting the target year
Changes of Amino Acid Contents in White Panicled Rice (Oryza sativa L.)
Choi, Ki-Choon ; Ryu, Jai-Hyunk ; Jung, Min-Woong ; Park, Hyung-Su ; Kim, Cheon-Man ; Lim, Young-Chul ; Kim, Da-Hye ; Choi, Gi-Jun ; Kim, Won-Ho ;
Journal of The Korean Society of Grassland and Forage Science, volume 32, issue 2, 2012, Pages 93~100
DOI : 10.5333/KGFS.2012.32.2.93
We examined the contents of amino acids to provide the basic data for the utilization of white panicled rice (Oryza sativa L., WPR) cultured in reclaimed paddy field of Bigumdo of Korea in 2011. WPR used in this study were collected in 1000 ha of reclaimed paddy field of Bigumdo. Crude protein contents of whole rice have the highest in leaf blade, followed by whole grain, leaf sheath and stem. The contents of total amino acids showed the highest trend in region received the most severe damage, but the lowest trend in region of normal growth. The content of glutamic acid was the highest among amino acids in leaf blade, whole grain, leaf sheath and stem collected in all regions, but the content of methionine was the lowest. Therefore, the contents of amino acids showed a similar level between the region occurred WPR and the region of normal growth. Further research on the nutritional aspects of forage must be performed because nutritive values of WPR were influenced by the degree of damage of WPR.
Effect of Sulfate Supply Level on Sulfate Assimilation in Different Oilseed Rape Cultivars
Zhang, Qian ; Park, Sang-Hyun ; Muneer, Sowbiya ; Kim, Tae-Hwan ;
Journal of The Korean Society of Grassland and Forage Science, volume 32, issue 2, 2012, Pages 101~108
DOI : 10.5333/KGFS.2012.32.2.101
To determine sulfate uptake and assimilation of various rape cultivars (Brassica napus L.) under different S levels, the activity of ATP sulfurylase,
uptake and glutathione (GSH) concentrations were measured in different age of leaves. In this study, ten rape cultivars (Mokpo, Tamra, Youngsan, Naehan, Saturnin, Akela, Mosa, Capitol, Pollen, and Colosse) showed various sulfate uptake and assimilation capacity in response to inefficient sulfate supply. Under inadequate sulfate conditions, a greater ATP sulfurylase activity in young leaves was observed in all cultivars compared to that of old leaves. In addition, GSH concentration was considerably increased in young leaves when S supply was declined from 2.0 to 0.2 mM. These results suggested that rape cultivars differ in their capacity to utilize sulfate under limited S conditions.
Forage Quality and Production of Phragmites communis as a Native Grass According to Growth Stages
Seo, Sung ; Kim, Won-Ho ; Jung, Min-Woong ; Lee, Sang-Hak ; Kim, Chun-Man ; Choi, Jin-Hyuck ; Kim, Jin-Sook ; Kim, Ha-Young ; Lee, Joung-Kyong ;
Journal of The Korean Society of Grassland and Forage Science, volume 32, issue 2, 2012, Pages 109~116
DOI : 10.5333/KGFS.2012.32.2.109
This study was carried out to determine the forage quality, production, and regrowth of Phragmites communis as a native grass according to growth stages. Experiment 1 was conducted in Ansan from May 2009 to April 2010 (7 stages), and experiment 2 was conducted in Cheonan from May to November 2011 (10 stages). In experiment 1, forage quality decreased rapidly with advance of growth from May. When harvested on late May, July, September and April of the following year, the contents of crude protein were 7.7%, 4.6%, 3.7%, and 2.2%, respectively. Relative feed value (RFV) were 80.2, 65.1, 61.8 and 52.8, and lignin contents were 7.1%, 9.9%, 12.0%, and 13.2%, respectively. In experiment 2, significantly higher forage yields were observed when harvested from late June to mid July. On the other hand, forage quality decreased with delayed harvest as was in experiment 1. Good regrowth of Phragmites communis was observed when harvested earlier than in August. When harvested on late May, June, July, August, September, October and November, the dry matter (DM) yields were 7,329 kg/ha, 12,527 kg, 9,593 kg, 8,279 kg, 7,649 kg, 5,822 kg and 5,540 kg, and in vitro digestible DM (IVDDM) yields were 3,924 kg/ha, 5,264 kg, 4,273 kg, 3,322 kg, 3,352 kg, 2,195 kg and 1,887 kg, respectively. Forage quality grades of Phragmites communis were 4th grade in May, 5th grade from June to Sept., and 6th grade in Oct., Nov., or in Apr. of the following year. However, all regrown Phragmites communis ranked the 4th in quality. In conclusion, we recommend that Phragmites communis should be harvested from late June to mid July (no later than the end of July) to obtain good forage quality with digestible nutrient contents greater than rice straw. Regrowth of Phragmites communis was poor, and more than 70% of annual forage yields were out of the first harvest. Therefore, we recommend only one harvesting per year for good regrowth and stable production of Phragmites communis.
Evaluation of Carrying Capacity for Hanwoo Heifers When Fed Whole Crop Barley and Rye as Influenced by Organic Fertilizer Application and Mixed Sowing with Legumes
Jo, Ik-Hwan ;
Journal of The Korean Society of Grassland and Forage Science, volume 32, issue 2, 2012, Pages 117~124
DOI : 10.5333/KGFS.2012.32.2.117
This study was conducted to estimate Hanwoo carrying capacity when whole crop barley or rye as winter forage crops was grown on different applying sources (chemical fertilizer, cattle or organic fertilizer) and mixed sowing combination with hairy vetch or forage pea during the period of 2008~2010. The experimental plots within whole crop barley or rye were consisted of 7 treatments, which were non-fertilizer, chemical fertilizer (P+K), chemical fertilizer (N+P+K), organic fertilizer, cattle slurry, cattle slurry with hairy vetch, and cattle slurry with forage pea. Each plot was triplicates and experimental treatments were allocated in the randomized complete block design. For whole crop barley, annual mean dry matter (DM) and total digestible nutrients (TDN) yields were the highest in N+P+K plots, but there were no significant differences among organic fertilizer, cattle slurry and mixed sowing with legumes. The TDN and RFV were the highest in mixed sowing plots of forage pea plus cattle slurry application. As 450 kg Hanwoo heifers were fed diets included 70% whole crop barley, organic fertilizer, cattle slurry application and mixed sowing with legumes plots is capable of raising average 2.5 to 2.9 heads/ha a year. For whole crop rye, annual DM, crude protein, and TDN yields of application groups and mixed sowing treatment with legumes showed 6.69~7.13, 0.46~0.51 and 3.95~4.18 ton/ha, respectively. In case of 450 kg Hanwoo heifers fed diets included 70% forage rye, it is estimated that cattle slurry application (mixed sowing with legumes) plots can rear average 3.1~3.3 heads/ha a year. It can be concluded that, on the basis of DM yield, not only mixed sowing with legumes by applying cattle slurry rather than single sowing of whole crop barley or whole crop rye enhanced production yield and feed values, but also it could be a substitute for imported grains as dietary protein sources in the case of feeding Hanwoo.
Study on Nutritive Values of White Panicled Rice Silage
Kim, Won-Ho ; Ryu, Jai-Hyunk ; Kim, Da-Hye ; Park, Hyung-Su ; Jung, Min-Woong ; Seo, Sung ; Choi, Gi-Jun ; Choi, Ki-Choon ;
Journal of The Korean Society of Grassland and Forage Science, volume 32, issue 2, 2012, Pages 125~130
DOI : 10.5333/KGFS.2012.32.2.125
This study was performed to investigate the nutritive values of white panicled rice (Oryza sativa L., WPR) silage manufactured with WPR grown in reclaimed paddy field of Bigumdo of Korea in 2011. The WPR used in this study were collected in 1,000 ha of reclaimed paddy field of Bigumdo and was harvested at dough stage and ensiled. The yield of whole crop rice (WCR) grown in region received the most severe damage (MSD) was lower as about 800 kg/ha as than that in region of normal growth (NG). The content of crude protein and total digestible nutrient in WCR of MSD slightly increased, as compared to that in WCR of NG, but the contents of acid detergent fiber and neutral detergent fiber significantly decreased (p<0.05). The pH in WCR silage of MSD and NG ranged from 4.5 to 5.0 and pH decreased by the inoculation of lactic bacteria (p<0.05). The content of lactic acid in WCR silage of MSD and NG increased by the inoculation of lactic bacteria (p<0.05), but the content of acetic acid and butyric acid decreased (p<0.05). Flieg`s score in WCR silage of MSD and NG inoculated lactic bacteria increased from 2 to 3 grade, as comparing to non-inoculation of lactic bacteria. Therefore, this study suggests that WPR can be utilized as forage.
Evaluation of Characteristics and Forage Production for Bermudagrass (Cynodon dactylon) and Bahiagrass (Paspalum notatum) in Jeju
Park, Hyung-Soo ; Park, Nam-Gun ; Kim, Jong-Gun ; Choi, Ki-Choon ; Lim, Young-Chul ; Choi, Gi-Jun ; Lee, Ki-Won ;
Journal of The Korean Society of Grassland and Forage Science, volume 32, issue 2, 2012, Pages 131~138
DOI : 10.5333/KGFS.2012.32.2.131
This study was conducted to evaluate the characteristics and forage production of bermudagrass (Cynodon dactylon) and bahiagrass (Paspalum notatum) in Jeju. Bermudagrass cultivars evaluated were Common and Ecotype. Bahiagrass cultivars evaluated were Tifton 9 and Argentine. Two warm season grasses were established at the Subtropical Animal Experiment Station in spring 2007. Emergence of bremudagrass and bahiagrass was observed approximately 16 days and 28 days after seeding, respectively. The heading dates of bermudagrass and bahiagrass were on 26 May and in mid-July, respectively. Bermudagrass cultivars had higher dry matter (DM) than bahiagrass at first harvest. Dry matter yield of bahiagrass was higher than that of bermudagrass (p<0.05). Peak forage DM production of bermudagrass and bahiagrass cultivars was in June and July, respectively. The content of crude protein (CP) and total digestibility nutrient (TDN) of bermudagrass cultivars were higher than those of bahiagrass during the first harvest. Acid detergent fiber (ADF) and in vitro DM digestibility (IVDMD) were similar across the four cultivars. In Jeju, bermudagrass and bahiagrass provide a useful option for supplemental summer forage in most livestock forage systems.
Influences of Feeding Seleniferous Whole Crop Barley Silage on Growth Performance and Blood Characteristics in Growing Hanwoo Steers
Kim, Guk-Won ; Jo, Ik-Hwan ; HwangBo, Soon ; Lee, Sung-Hoon ; Han, Ouk-Kyu ; Park, Tae-Il ; Choi, In-Bae ;
Journal of The Korean Society of Grassland and Forage Science, volume 32, issue 2, 2012, Pages 139~148
DOI : 10.5333/KGFS.2012.32.2.139
This study was conducted to investigate effects of feeding seleniferous whole crop barley silage (WCBS) on growth performance and blood characteristics in growing Hanwoo steers. A total of 20 growing Hanwoo steers, initially weighing on average 208.8 kg of body weight, were used and treatments were consisted of 1) controls : 0.1 mg/kg Se, 2) T1 : 0.3 mg/kg Se, 3) T2 : 0.9 mg/kg Se by combining seleniferous and/or non-seleniferous WCBS, and 4) T3 : 0.9 mg/kg Se of inorganic Se treatment. Five steers were allocated to each treatment, and the trial was lasted for 90 days. All experimental diets were included to 30% of combination of seleniferous and/or non-seleniferous WCBS, and in T3 diet, sodium selenite that corresponds to 0.9 mg/kg Se was added to control diets. Also, the diets were isonitrogenous and isocaloric among treatments. Dietary level and type of selenium did not affect feed intakes and daily gain, and blood glucose concentration was significantly (p<0.05) lower for controls than T1 and T2 treatments. Blood total lipid concentration was significantly (p<0.05) decreased with increasing levels of dietary selenium, and also that of T2 and T3 was significantly (p<0.05) lower than controls. LDL-cholesterol concentration was significantly (p<0.05) lower for treatments including dietary selenium than controls, and also blood triglyceride concentration was significantly (p<0.05) lower for T2 than controls. Overall, it was tended that feeding seleniferous WCBS or inorganic Se increased blood IgG concentration, and in the same dietary selenium levels, T2 treatment was higher for IgG than T3 group (p>0.05). Blood selenium concentration was significantly (p<0.05) increased by feeding increasing levels of seleniferous WCBS, but there was no significant difference between controls and T3 group. These results showed that feeding seleniferous WCBS to growing Hanwoo steers was responsible for saccharide and lipid metabolism, and in particular, it reduced their total lipid and blood LDL-cholesterol concentrations. Furthermore, selenium present in seleniferous WCBS rather than inorganic selenium was better available in intestinal absorption, and it might help to enhance immunity in growing and younger stages of Hanwoo steers.
Effect of Nitrogen Top Dressing Levels on Productivity, Feed Value, and Anthocyanin Content of Colored Barley
Song, Tae-Hwa ; Han, Ouk-Kyu ; Park, Tae-Il ; Kim, Yang-Kil ; Kim, Kee-Jong ; Park, Ki-Hun ;
Journal of The Korean Society of Grassland and Forage Science, volume 32, issue 2, 2012, Pages 149~156
DOI : 10.5333/KGFS.2012.32.2.149
his experiment was carried out to evaluate the effects of nitrogen top dressing levels on the growth, feed value, and anthocyanin content for developing functional feed of colored barley. A colored barley cultivar, Boanchalbori, was tested in this experiment. Nitrogen top dressing levels was six (0, 20, 40, 60, 80, 100%) and top dressing time was a regeneration time. In case of productivity, heading data was get behind and dry matter rate was significant decreased with higher nitrogen top dressing levels (p<0.05). Fresh yield, dry matter yield and TDN yield was increased with higher nitrogen top dressing levels, but not significant. In case of feed value, crude protein content was significant increased with higher nitrogen top dressing levels (p<0.05), and higher in the order of spike, whole and leaf culme of the plant. Percent NDF and ADF was decreased with higher nitrogen top dressing levels in leaf culme, but no difference in spike and whole (p<0.05), and higher in the order of leaf culme, whole and spike of the plant. TDN was increased with higher nitrogen top dressing levels in leaf culme, but no difference in spike and whole (p<0.05), and higher in the order of spike, whole and leaf culme of the plant. Total anthocyanin content was significant decreased with higher nitrogen top dressing levels in leaf culme and whole (p<0.05), and higher in the order of leaf culme, whole and spike of the plant. Specially, cyanidin-3-glucoside (C3G), delphinidin (Del), malvidin-3-glucoside (M3G) and malvidin (Mal) show a significant decrease. So there are an accumulation of anthocyanin in the culm, and standard nitrogen top dressing levels dressing on the regeneration time for produces high anthocyanin content of the colored barley.
Change of Seed Yield, Germination Rate and Hard Seed Rate with Harvest Time in Hairy Vetch (Vicia villosa Roth)
Ku, Ja-Hwan ; Kim, Min-Tae ; Son, Beom-Young ; Lee, Jin-Seok ; Kim, Jung-Tae ; Hwang, Jong-Jin ; Baek, Seong-Bum ; Moon, Jung-Kyung ; Kwon, Young-Up ;
Journal of The Korean Society of Grassland and Forage Science, volume 32, issue 2, 2012, Pages 157~164
DOI : 10.5333/KGFS.2012.32.2.157
This experiment was conducted to investigate an optimum harvest time for hairy vetch (HV) seed production. The seeds were harvested at 5 times, 35, 42, 48, 54, and 58 days after flowering (DAF) in 2009 and 2010. In 2011, 3 times of harvest, 39, 49, and 53 DAF were done at Suwon, middle part of Korea. HV plants were harvested and threshed by manually at each time. Seed yield, yield components, germination rate, hard seed rate, and viviparous germination rate were investigated. The highest seed yield represented 54 DAF in 2009, 42 DAF in 2010, and 49 DAF in 2011. When the triticale, HV support plant, comes to early lodging, the time of highest yield was delayed. 1,000-seed weight linearly increased from 35 DAF to 54 DAF. The later harvested seed showed a trend of increasing germination and hard seed ratio. However, viviparous germination had occurred because of in rainy season. In conclusion, it was presumed that an optimum harvest time for safe seed production in HV should be during 42 DAF ~ 54 DAF before the rainy season considering seed yield, 1,000-seed weight and germination.
Effect of Mature Miscanthus sacchariflorus var. No. 1 on In Vitro Rumen Fermentation Characteristics and Its Dry Matter Digestibility
Cho, Sang-Buem ; Mbiriri, David Tinotenda ; Oh, Sung-Jin ; Lee, A-Reum ; Yang, Jin-Ho ; Ryu, Chae-Hwa ; Park, Chang-Min ; Moon, Yun-Ho ; Chae, Jung-Il ; Choi, Nag-Jin ;
Journal of The Korean Society of Grassland and Forage Science, volume 32, issue 2, 2012, Pages 165~174
DOI : 10.5333/KGFS.2012.32.2.165
This study was conducted to develop Miscanthus as a new roughage resource for ruminant animals. Miscanthus sacchariflorus var. No 1, a newly developed germtype in Korea, was harvested at late maturity stage and its effect on rumen pH, ammonia nitrogen, gas production, volatile fatty acid (VFA) production and digestibility were evaluated using in vitro rumen fermentation. The effects of Miscanthus were compared with rice straw. Miscanthus showed significantly higher pH compared to rice straw (p<0.01). As for ammonia nitrogen, there was no significant difference after 12 h of incubation (p>0.05). Gas production in Miscanthus was significantly lower than that of rice straw in overall incubation time (p<0.05) after 6 h of incubation. In VFA production, acetate, propionate, butyrate, valerate and total VFA production in Miscanthus were lower than those in rice straw. However, production of iso-butyrate and iso-valerate were not different in between two forage materials. Dry matter digestibility of Miscanthus was significantly lower than rice straw (p<0.05) during 12~24 h of incubation. As a result, the availability of Miscanthus as roughage source showed approximately 80% that of rice straw.
Effect of Different Forages on Growth Performance, Meat Production and Meat Quality of Hanwoo Steers : Meta-analysis
Cho, Sang-Buem ; Lee, Sang-Moo ; Kim, Eun-Joong ;
Journal of The Korean Society of Grassland and Forage Science, volume 32, issue 2, 2012, Pages 175~184
DOI : 10.5333/KGFS.2012.32.2.175
In the present study, the effects of feeding different forage sources on the growth performance, meat production and meat quality of Hanwoo steers were evaluated using meta-analysis. In total 5 studies that were performed and published in the domestic journals in Korea were employed for the analysis. The results from nutritionally better quality roughage-based steers and rice straw-based steers in each study were assigned as a treatment and a control, respectively, and the mean difference between the treatment and the control was used for the evaluation of effect size. The summary effect was calculated using random effect model. As results, in growth performance, positive effects were found in feed intake, daily weight gain, final body weight and feed efficiency. The significant effect was found only in daily weight gain (p<0.05). In meat production, carcass weight, Longissimus dorsi area, yield index showed positive effect and negative effect was detected in back fat thickness. The significant effect in meat production was found in carcass weight and Longissimus dorsi area (p<0.05). In meat quality, positive effects were represented in marbling score and fat color. Meat color showed little effect. The significance for effects was not observed in the analysis of meat quality. In conclusion, feeding good quality forages to ruminants plays an important role in Korean beef cattle industry and hence further researches are necessary to improve the efficiency of forage utilization in Hanwoo cattle.