간행물
한국초지조사료학회지 KCI 등재 Journal of The Korean Society of Grassland Science
- 발행기관 한국초지조사료학회
- 자료유형 학술지
- 간기 계간
- ISSN 2287-5824 (Print)2287-5832 (Online)
- 수록기간 1978 ~ 2026
- 주제분류 농수해양 > 축산학 농수해양 분류의 다른 간행물
- 십진분류KDC 527DDC 636
권호리스트/논문검색
Vol.46 No.2 (2026년 6월) 9건
1.
2026.06
구독 인증기관 무료, 개인회원 유료
Alfalfa silage production is challenged by high moisture, strong buffering capacity, and low water-soluble carbohydrate concentrations, yet long-term storage is common under Korean production conditions. This study evaluated how target moisture content at ensiling and a lactic acid bacterial inoculant affect the chemical composition, fermentation profile, and bacterial community of alfalfa silage stored for 12, 18, or 24 months. Alfalfa harvested at National Institute of Animal Science (NIAS, Cheonan) was ensiled at target moisture levels of 30, 40, 50, 60, or 70% with either no additive (CON) or a mixed inoculant containing Lactococcus lactis and Pediococcus pentosaceus (INO). Moisture content exerted the dominant and most consistent influence on silage quality. Crude protein generally decreased and acid detergent fiber (ADF) generally increased as moisture content increased, whereas neutral detergent fiber (NDF) responses were not consistently quadratic across all storage periods. The 40–50% moisture treatments showed the most favorable lactic fermentation, with lower pH and higher lactic acid concentrations than the drier 30% and wetter 60∽70% treatments. Inoculation effects were limited and depended on moisture level and storage duration; significant inoculation-related effects were observed for pH and propionic acid at 12 months and lactic acid at 24 months, but inoculation did not consistently improve lactic acid accumulation. The 60∽70% moisture treatments showed elevated butyric acid and Clostridium relative abundance, indicating increased risk of undesirable fermentation. At 70% moisture, Clostridium relative abundance was numerically lower in INO than in CON; however, this pattern was not consistently supported by butyric acid responses. Overall, controlling ensiling moisture to approximately 40∽50% appears more reliable than relying on inoculation alone for maintaining long-term alfalfa silage quality.
4,000원
2.
2026.06
구독 인증기관 무료, 개인회원 유료
This experiment was carried out to evaluate the effect of natural drying methods on moisture content reduction and germination of Italian ryegrass seeds in Saemangeum reclaimed land, Kimje, Korea, from 2024 to 2025. The natural drying treatments included seed spread thicknesses (2.5, 5.0 and 7.5 cm), three seed reversal frequencies (1, 2 and 3 times per day), and two reversal methods (seed-only reversal and complete mixing of seed with a dry mat). A thinner spread thickness significantly accelerated moisture reduction (p<0.001). Although the effects of reversal frequency (p<0.017) and reversal method on moisture reduction were statistically significant, the magnitude of the differences was small, approximately 1~2%. Seeds with an initial moisture content of approximately 31.5% required 1.0, 1.5 and 2.0 days to reach 14% moisture when dried at spread thickness of 2.5, 5.0 and 7.5 cm, respectively. When seeds with an initial moisture content of 31.5% were dried at a thickness of 2.5 cm, the germination rate was 82.0%, which did not differ significantly from the rates observed at 5.0 cm (83.7%) and 7.5 cm (87.2%). These results suggest that, to achieve faster drying and maintain high seed quality, Italian ryegrass should be harvested at 30~35% seed moisture content, dried directly in the cultivation field, and spread at a thickness of 2.5 to 5.0 cm.
4,000원
3.
2026.06
구독 인증기관 무료, 개인회원 유료
This study was conducted to evaluate the effects of cultivation periods and substitution levels of sprouted barley on chemical compositions, fermentation characteristics, microbial counts, and nutrient digestibility of fermented-total mixed ration (F-TMR). Sprouted barley (SB) was cultivated for 6 (SB6) and 8 days (SB8), respectively, using a hydroponic system. It was harvested and chopped for substitution at 0, 5, or 10% (as-fed basis) in experimental diets (TMRs). And, the TMRs were then ensiled into the bucket silo (20 L) for 7 days to produce F-TMR (n=3). As the sprouting period increased, crude protein (p=0.019; SB6 vs. SB8 = 18.7% vs. 19.1%) and non-fiber carbohydrate (p<0.001; 35.4% vs. 36.4%) increased, whereas the crude ash (p=0.003; SB6 vs. SB8 = 7.15% vs. 6.95%) decreased. These differences were maintained in F-TMR (p<0.05). Lactate (p=0.013; 5% vs. 10% = 2.49% vs. 2.76%) and propionate (p<0.001; 0.31% vs. 0.49%) contents in F-TMR increased by increasing the substitution level of SB, but pH (p<0.001; 5.20 vs. 4.98) decreased (p<0.05). Lactic acid bacteria (p=0.017; 5% vs. 10% = 7.37 log10 cfu/g vs. 7.71 log10 cfu/g) and Bacillus subtilis (p=0.002; SB8-5% vs. SB8-10% = 6.90 log10 cfu/g vs. 7.49 log10 cfu/g) of F-TMR increased by increasing the substitution level of SB. Furthermore, in vitro digestibilities of dry matter (p<0.001; 5% vs. 10% = 72.8% vs.74.8%) and neutral detergent fiber (p<0.001; 48.8% vs. 55.0%) also increased by increasing the substitution level of SB. Therefore, this study suggested that SB cultivated for 8 days could be used as a feed source in TMR to improve fermentation quality and nutrient utilization of F-TMR, particularly at a 10% substitution with grain mixture.
4,000원
4.
2026.06
구독 인증기관 무료, 개인회원 유료
Chang-Woo Min, Bo Ram Choi, Yowook Song, Hyung Soo Park, Jun Gyeong Choi, Yun Ju Kang, Sang-Hoon Lee, Ki-Won Lee
Alfalfa (Medicago sativa L.) is an important forage legume with high feed value and productivity. Because cultivated alfalfa is an outcrossing autotetraploid species with high heterozygosity, phenotype-based cultivar identification can be limited by environmental variation and within-cultivar genetic diversity. In this study, single nucleotide polymorphism (SNP) markers were developed for the identification of the Korean alfalfa cultivar ‘Alfaking (MSCB07)’. Newly generated genotyping-by-sequencing (GBS) datasets for ‘Vernal 25’ and ‘Common (AF)’ were analyzed together with a previously generated whole-genome sequencing (WGS) dataset of ‘Alfaking (MSCB07)’. After alignment to the reference genome and SNP filtering, 20,375 SNP loci were retained for downstream analysis. Principal component analysis and neighbor-joining tree analysis separated ‘Alfaking (MSCB07)’ from the other analyzed cultivars. Genotype pattern comparison identified two diagnostic barcode groups, and their combined profile distinguished ‘Alfaking (MSCB07)’ as “bb” among the analyzed cultivars. Finally, 54 SNP loci were selected as candidate markers for ‘Alfaking (MSCB07)’ discrimination. These results suggest that the selected SNP markers may be useful for cultivar identification, seed purity control, and cultivar protection of ‘Alfaking (MSCB07)’. Further validation with additional alfalfa cultivars and genetic resources is needed to confirm the broader applicability of these markers.
4,200원
5.
2026.06
구독 인증기관 무료, 개인회원 유료
This study was conducted to evaluate the effects of productivity-limiting factors associated with boron(B), molybdenum(Mo), rhizobium, and lime on dry matter yield(DMY) and nutritive value of alfalfa. The experiment was carried out in a greenhouse at the National Institute of Animal Science, Cheonan, Republic of Korea, from April 2022 to August 2024. Alfalfa cultivar ‘SW5615’ was sown at a rate of 20 kg ha⁻¹. The experiment was arranged in a randomized complete block design with three replications. The treatments consisted of a control, in which all productivity-related factors were supplied, and four limitation treatments: B limitation, Mo limitation, Rhizobium limitation, and Lime limitation. Alfalfa was harvested five times at the early flowering stage, approximately 10% bloom. DMY and forage nutritive value, including crude protein(CP), neutral detergent fiber(NDF), acid detergent fiber(ADF), total digestible nutrients(TDN), and relative feed value(RFV), were analyzed. Productivity-limiting factors significantly affected DMY (p<0.05). Compared with the control, relative DMY was 97.8% under B limitation, 82.2% under Mo limitation, 63.1% under Rhizobium limitation, and 64.6% under Lime limitation. Among nutritive value parameters, only CP concentration differed significantly among treatments(p<0.05), whereas NDF, ADF, TDN, and RFV were not significantly affected(p>0.05). The highest CP concentration was observed under Lime limitation, which was likely associated with reduced biomass accumulation or delayed maturity rather than improved forage productivity. These results indicate that Rhizobium and Lime limitations were the major factors reducing alfalfa DMY, followed by Mo limitation, while B limitation had little effect under the present experimental conditions.
4,000원
6.
2026.06
구독 인증기관 무료, 개인회원 유료
Gi-Beom Nam, Il-Kyu Yoon, Jun-Woo Lee, Chang-Woo Min, Seung-Hak Yang, Yong-Gu Kim, Dong-Hyun Kim, Byung-Hyun Lee
This study aimed to develop and verify climate exposure indicators to evaluate the vulnerability of cool-season grasses to climate change in South Korea. A correlation analysis was conducted between climate factors and productivity of cool-season grasses using nationwide productivity data from 1993 to 2024 collected through literature search and the National Institute of Animal Science (n=542), along with productivity data from field experiments conducted in Jinju and Jangheung over two years (n=15; total n=557). The cool-season grass species included in this analysis were primarily orchardgrass (Dactylis glomerata L.), tall fescue (Festuca arundinacea Schreb.), perennial ryegrass (Lolium perenne L.) and timothy (Phleum pratense L.). The correlation analysis results indicated that productivity of cool-season grasses had a significant positive correlation with the mean temperature, mean minimum temperature, and mean maximum temperature during the winter and spring seasons, as well as the growing degree days from November to March. To validate the correlation analysis between temperature and yield, we compared the results with field experiments. The findings from the field trials were consistent with the correlation analysis, reinforcing the reliability of the indicators. In contrast, the number of rainy days in July exhibited a significant negative correlation with productivity. This suggests that waterlogging during the rainy season reduces the growth and yield of cool-season grasses. Therefore, we propose that winter and spring temperatures, growing degree days, and summer precipitation serve as key climate exposure indicators that explain variations in cool-season grass productivity. Although these climate exposure indicators can be utilized to evaluate climate vulnerability, continuous data accumulation and analysis are necessary to further strengthen the explanatory and predictive power of these variables in future agricultural applications.
4,000원
7.
2026.06
구독 인증기관 무료, 개인회원 유료
This study was conducted from 2021 to 2024 at the Grassland and Forage Division, National Institute of Animal Science, Rural Development Administration, Korea, to develop a high-yielding, medium-maturing Italian ryegrass (Lolium multiflorum Lam.) cultivar. The newly developed cultivar, named ‘Aura’ is a tetraploid type characterized by green leaves, a semi-erect growth habit before winter, and an erect growth habit during spring growth. ‘Aura’ headed on May 11, approximately 10 days later than the check cultivar ‘Kowinearly’, confirming its classification as a medium-maturing cultivar. At the heading stage, plant height reached 105 cm, which was greater than that of the control cultivar. In addition, leaf blade width, spike length, and spikelet number were greater in ‘Aura’ indicating vigorous growth. The average dry matter yield of ‘Aura’ across four regions was 10,535 kg/ha, which was significantly higher than that of ‘Kowinearly’ (p<0.05). The crude protein content of ‘Aura’ was 10.5%, which was 2.2 percentage points higher than that of the check cultivar. In contrast, acid detergent fiber and neutral detergent fiber concentrations were lower in ‘Aura’ resulting in slightly greater total digestible nutrient content and relative feed value. Furthermore, ‘Aura’ maintained stable winter survival across all test locations. These results indicate that ‘Aura’ is a promising medium-maturing cultivar with high productivity, stable winter hardiness, and favorable forage quality for cultivation in Korea.
4,000원
8.
2026.06
구독 인증기관 무료, 개인회원 유료
This study evaluated the effects of seed mixtures of warm-season grasses and forage crops into tall fescue pastures on botanical composition, growth characteristics, and dry matter (DM) yield in the central region of Korea from 2023 to 2025. Tall fescue was seed mixture with crabgrass, bermudagrass, or barnyard millet in a randomized complete block design with three replicates. In 2024, total DM yield differed significantly among treatments (p<0.05). The tall fescue + barnyard millet treatment (T3) produced the highest yield (15,848 kg DM ha⁻¹), whereas the tall fescue monoculture (T1) and tall fescue + bermudagrass treatment (T4) showed lower yields of 12,358 and 10,173 kg DM ha⁻¹, respectively. In 2025, no significant differences were observed among treatments (p>0.05), with annual yields ranging from 13.5 to 14.5 Mg DM ha⁻¹. Over the two-year period, T3 showed the highest average DM yield, while T2 (tall fescue + crabgrass) produced yields comparable to T3. Crabgrass established rapidly and improved summer ground cover, whereas bermudagrass exhibited superior persistence and regrowth. Both crabgrass and barnyard millet effectively compensated for the summer decline in tall fescue productivity. However, excessive dominance of warm-season species reduced tall fescue persistence. These results indicate that interseeding tall fescue with crabgrass or barnyard millet is an effective strategy for improving summer pasture productivity, although optimization of seeding ratios and sowing time is required.
4,000원
9.
2026.06
구독 인증기관 무료, 개인회원 유료
This study was conducted to observe changes in chemical composition according to plant height at harvest of a sorghum × sudangrass hybrid and silage quality during fermentation. The sorghum × sudangrass hybrid (Sorghum bicolor(L.) Moench) cultivar‘Turbo Gold’was sown on May 27, 2024, in the Pyeongchang area. The cultivated samples were harvested and analyzed when plant height reached 50 cm (July 3), 100 cm (July 10), 150 cm (July 22), and 200 cm (July 30). In addition, samples harvested on August 22 were prepared as silage and opened after 0, 1, 2, 3, 5, 10, 15, 30, 45, and 60 days to evaluate changes in silage quality. The crude protein(CP) content was 7.35% in the 200 cm harvest group, and it was higher in the leaves (9.53%) than in the stems (4.81%). The acid detergent fiber(ADF) and neutral detergent fiber(NDF) contents increased as plant height increased. Digestibility did not differ significantly among plant parts, but it differed markedly according to plant height at harvest. The total digestible nutrients(TDN) tended to decrease with increasing plant height, and the relative feed value(RFV) averaged around 90. The water soluble carbohydrate(WSC) content also increased significantly with increasing plant height. Nitrate nitrogen content generally tended to decrease in the leaves as plant height increased, whereas it increased in the stems. CP content showed the highest value on day 5 of fermentation and then gradually decreased. The pH gradually decreased over time and, in particular, dropped rapidly to below 4.0 within the first 5 days. Ammonia nitrogen content gradually increased as fermentation progressed, with most of the increase occurring within the first 5 days of fermentation. Regarding the correlations among quality-related parameters, CP content showed a weak correlation with digestibility, while ADF content showed strong negative correlations with pH, WSC. These results indicate that, when the crop is harvested at a generally appropriate stage, nitrate-nitrogen in the sorghum × sudangrass hybrid does not reach a level harmful to livestock. In addition, nitrate-nitrogen did not reach a harmful level during the silage fermentation process.
4,000원
