• 한국초지조사료학회지
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• 제34권3호
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• pp.169-173
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• 2014

The aim of present study was to improve the quality of silage using lactic acid bacteria (LAB) and chlorella as a supplement. Italian ryegrass (IRG) mediated silage was prepared with lactic acid bacteria (L. plantarum) and different concentration of chlorella. We analyzed the nutritional profiles such as crude protein (CP), acid detergent fiber (ADF) neutral detergent fiber (NDF), total digestible nutrient (TDN) and in-vitro dry matter digestibility (IVDMD), microbial counts and fermentative acids such as lactic acid, acetic acid and butyric acid in the control and experimental silage after three months. It shows increased crude protein content and also maintains the rest of nutritional values as compared with control silage. LAB inoculation with chlorella as supplementation slightly reduced the pH of the silage. In addition, it increased the fermentative acids production as compared with control silage and inhibits the undesired microbial growth especially fungi in the silage. Therefore, we suggest that LAB inoculation and chlorella supplementation to the IRG mediated silage could be improved the nutritional quality of the silage which is an intrinsic feature for the application in the preparation of animal feeds and functional foods.

• 한국초지조사료학회지
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• 제18권1호
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• pp.1-10
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• 1998

Eleven sorghun-sudangrass hybrids have been recommended as the government recommended forage cultivars, however, their forage performance and quality have mostly been tested at two regions, such as Suweon in the Middle Northwestern Coast Region and Sunghwan in the Middle Southwestern Coast Region. Therefore, the objective of this experiment was to retest the forage performance and quality of eleven government recommended sorghum-sudangrass hybrids(TE haygrazer, 988. TE haygrazer-R, SX-17, NC + 855, 855F, GW9110G, G83F, Sordan 79, Speed feed and Jumbo) at five regions, such as Icheon in the Middle Northern Inland, Suweon in the Middle Northwestern Coast, Sunghwan in the Middle Southwestern Coast, Keongsan in the Keongpook Inland and Kwangju in the Southern Inland, 1993 and 1995. Among the eleven hybrids tested, 'NC + 855' gave the highest forage yield at all regions when averaged over the two-year period, but others varied by region. 'NC + 855' was the highest yielding at Icheon, Keongsan and Kwangju, G83F was highest at Suweon and 855F was highest at Sunghwan. 'Jumbo' (headless type) was generally higher in forage quality than others, but at both Suweon and Icheon, 'NC + 855' and '855F' were higher quality than others. As the results of the experiment, 'TE haygrazer', 'NC + 855' , G83F and 'GW9110G1 at Icheon, 'G83F' and 'Sordan 79' at Suweon, 'NC + 855' and '855F' at Sunghwan, '988' and 'NC + 855' at Keongsan, and 'TE haygrazer-R' , 'NC + 855', 'GW9110G' and 'G83F' at Kwangju might be preferable to other hybrids because they have higher forage yield.

• 한국초지조사료학회지
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• 제41권3호
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• pp.198-204
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• 2021

Intercropping cereals with legumes is known to improve forage production and crude protein yield. Sorghum × sudangrass hybrids (SSH) have excellent dry matter content and high cultivation temperatures. In this study, we investigated the growth characteristics, forage productivity, and feed value of intercropping SSH with different legumes in rice paddy fields. We used five treatments in this study SSH monocropping and four intercropping treatments of SSH with, lablab, cowpea, sesbania, and two cultivars of soybean (Chookdu 1 and 2). SSH plant height was not significantly different between the monocropping and intercropping treatments. However, the plant heights of lablab, cowpea, and sesbania were significantly higher than those of the two soybean cultivars. The total dry matter yield (kg/ha) was significantly higher in SSH monocropping than in intercropping; among the intercropping treatments, the one with SSH and Chookdu 2 yielded the highest total dry matter yield. The SSH feed value was significantly different between the monocropping and intercropping treatments, although there were no differences between the intercropping treatments. Among the intercropped legumes, lablab showed the highest neutral detergent fiber and acid detergent fiber contents, and cowpea had the highest crude protein content. These results reveal that intercropping SSH with legumes in paddy fields could be a promising cultivation technique to maintain stable forage productivity.

• 한국초지조사료학회지
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• 제41권2호
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• pp.128-133
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• 2021

This study was carried out to evaluate the forage yield and feed value of winter crops such as Italian ryegrass (IRG), oat, rye, barley, and hairy vetch. Forage crops were sown on 15^th October 2018 in a paddy field after harvesting rice and forage crops were harvested at two times of 25^th April 2019 and 18^th May 201 9. The highest dry matter (DM) yield was harvested from rye among the five species of forage crop on 18^th May. DM yield of all forages was increased 14.4% on 18^th May compared to 25^th April. The highest yield of crude protein (CP) was obtained from hairy vetch on 25^th April, whereas it was decreased (38.1%) on 18^th May. Moreover, the highest total digestible nutrient (TDN) yield and relative feed value (RFV) was harvested respectively from rye and hairy vetch on 25^th April. Delay of harvest time considerably increased DM yield but significantly decreased CP and RFV. In conclusion, rye was the best source of DM and TDN and hairy vetch was the high-quality feed. Rye harvested on 25^th April is the proper forage for resolving Korea's problem of insufficient forage yield.

• Journal of Animal Science and Technology
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• 제65권4호
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• pp.792-803
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• 2023

This study aimed to assess the impact of weather events on the sorghum-sudangrass hybrid (Sorghum bicolor L.) cultivar production trend in the central inland region of Korea during the monsoon season, using time series analysis. The sorghum-sudangrass production data collected between 1988 and 2013 were compiled along with the production year's weather data. The growing degree days (GDD), accumulated rainfall, and sunshine duration were used to assess their impacts on forage production (kg/ha) trend. Conversely, GDD and accumulated rainfall had positive and negative effects on the trend of forage production, respectively. Meanwhile, weather events such as heavy rainfall and typhoon were also collected based on weather warnings as weather events in the Korean monsoon season. The impact of weather events did not affect forage production, even with the increasing frequency and intensity of heavy rainfall. Therefore, the trend of forage production for the sorghum-sudangrass hybrid was forecasted to slightly increase until 2045. The predicted forage production in 2045 will be 14,926 ± 6,657 kg/ha. It is likely that the damage by heavy rainfall and typhoons can be reduced through more frequent harvest against short-term single damage and a deeper extension of the root system against soil erosion and lodging. Therefore, in an environment that is rapidly changing due to climate change and extreme/abnormal weather, the cultivation of the sorghum-sudangrass hybrid would be advantageous in securing stable and robust forage production. Through this study, we propose the cultivation of sorghum-sudangrass hybrid as one of the alternative summer forage options to achieve stable forage production during the dynamically changing monsoon, in spite of rather lower nutrient value than that of maize (Zea mays L.).

• 한국초지조사료학회지
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• 제25권2호
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• pp.113-118
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• 2005

본 시험은 충청남도 당진군에 소재한 대호 간척지내 시험포장에서 전작물로 벼 재배된 곳을 밭으로 전환하여 공시 초종으로 총체보리 2품종(올보리, 알보리), 호밀 2품종(올호밀, Koolgrazer) 그리고 이탈리안 라이그라스 2품종(화산 101호, Florida80)을 총체보리와 호밀은 10월 10일경, 이탈리안 라이그라스는 9월 30일경에 조파하여 각 작목 간에 따른 토양염류도 변화, 수량 및 사료가치를 비교 검토코자 2002년에서 2004년까지 2년간 수행되었다. 각 작물재배구의 계절별 토양염류도는 각 작물구 모두 파종 당시에 높았으며 월동 후 수확시까지 점진적으로 낮아졌다. 건물수량은 이탈리안 라이그라스가 가장 높았으며 총체보리 그리고 호밀 순으로 나타났다. 조단백질함량은 이탈리안 라이그라스가 가장 높았으며, 총체보리 그리고 호밀 순으로 나타났으며, 조섬유 함량은 호밀이 가장 높았으며, 이탈리안 라이그라스 그리고 총체보리 순으로 높았다. ADF 함량은 총체보리>이탈리안 라이그라스>호밀 순으로 낮았으며, 식물체 중나트륨(Na) 함량은 총체보리 >이탈리안 라이그라스 >호밀 순으로 높았다. 위의 결과로 볼 때 간척지에서 겨울 사료작물로 재배할 때 이탈리안 라이그라스가 가장 우수하였고 다음으로 총체보리가 가능하였다.

• 한국초지조사료학회지
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• 제28권3호
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• pp.193-202
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• 2008

국내 보리 소비가 급격히 감소하면서 재배 면적도 줄어들어 겨울철 논을 이용한 보리 재배 농가의 대체 소득원이 보리를 활용한 조사료 생산이다. 경지이용률 제고와 양질의 조사료 공급은 국내 축산 농가의 국제경쟁력을 올릴 수 있어 최근 청보리의 생산은 현저히 증가하고 있는 추세이다. 총체사료용 청보리는 식용보리에 비하여 전체적인 건물수량성이 높아야 하고 가축이 먹기에 좋도록 형태적으로도 개선되어야 한다. 그 동안 개발된 총체사료용 청보리는 벼와의 작부체계에 알맞도록 조숙이면서 건물수량이 ha당 10$\sim$12톤 (생체수량 평균 33톤/ha)을 보이는 영양, 선우, 상원, 소만 등을 개발하였으며, 가축의 기호성이 좋도록 거친 까락을 매끈망으로 개선한 우호, 까락이 퇴화한 삼차망 보리 유연과 줄기에 잎귀를 없애서 부드럽게 만든 다미 등 초형을 개선하였다. 이러한 사료 전용 청보리 품종들은 사료가치도 우수한 것으로 평가되어 육종적으로 개선한 각 품종들의 고유 생육특성을 중심으로 보고하는 바이다.

• 한국초지조사료학회지
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• 제39권1호
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• pp.17-23
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• 2019

본 연구는 5월 하순경 늦게 파종하여 재배한 사료용 옥수수의 품종별 생육특성과 생산성을 평가하고 생육특성에 따른 생산성 변화요인을 분석하기 위하여 2017년부터 2018년까지 우리나라 중부지역인 충남 천안에서 수행되었다. 2017년 5월 24일과 2018년 5월 25일 파종한 사료용 옥수수는 6월 5일과 6월 1일에 각각 출현하였다. 출사기는 품종에 따라 차이가 있었고(p<0.05), 대부분의 품종은 7월 22일~23일 경이었다. 간장은 광평옥 품종과 Nero IT 품종 간에는 차이가 있었으나 나머지 품종들 간에는 차이가 없었다. 줄기의 굵기는 품종에 따라 19~22mm 범위였으나 차이가 없었다. 옥수수 검은줄오갈병의 발생률은 모든 품종에서 3% 이하로 낮았다. 가소화양분(TDN) 수량은 품종 간 차이가 있었고(P<0.05), TDN 수량이 많은 품종은 P32P75, P2088, P31N27, 광평옥 순이었다. 가소화양분(TDN) 수량은 줄기 길이, 줄기 굵기 및 이삭수량과 고도의 정의상관이 있었다(p<0.01). 12개 사료용 옥수수 품종들의 평균 TDN 함량은 69.8%였다. 우리나라 중부지역에서 동계사료작물을 5월 중순에 수확을 완료하고 사료용 옥수수를 파종한다면, 만파적응성이 우수한 P32P75, P2088, P31N27, 광평옥 품종을 선택하여 재배하는 것이 양질 조사료 생산성 향상에 유리할 것으로 사료된다.

• Asian-Australasian Journal of Animal Sciences
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• 제4권3호
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• pp.203-209
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• 1991

Collection, evaluation and preservation of tropical forage grasses, napier grass breeding, tissue culture of pangola grass and alfalfa selection were conducted in Taiwan. The results showed that some species such as pangola grass (Digitaria decumbens) with good performance and wide adaptability were selected and released. Forage yield and quality of napier grass have been improved and have good results in animal performance. Embryogenic callus cultures from young inflorescences and stem segments of pangola grass could provide an alternative method for rapid propagation and improvement. Three better varieties of alfalfa were selected. They maintain satisfactory stands for two or three years on well-drained sand loam and loam soil, and used only as annual crop in flat area and acid soil. However, more studies in forage breeding for acid soil arc required to maximise the forage quality and animal production. Thus, animal fed with forages of high quality and a few grains supplement will be the future achivement in livestock industry.

• 한국초지조사료학회지
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• 제9권2호
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• pp.108-112
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• 1989

To determine optimal plant density of forage rape in southern areas of Korea, Velox, the highest yielding variety among seventeen introduced varieties of forage rape, was grown under five different plant densities. The results obtained are summarized as follows: 1. Yield components such as stem diameter, number of main stem,leaves, number of branches and number of branch leaves and fresh yield were highest at the plots with 50cm row spacing and 30cm plant spacing. 2. Dry matter yield, content of crude protein, IVDMD and digestible dry matter yield were highest at the plots of broadcasting. 3. Since plants under high density were high in plant length and small in stem diameter, contents of crude fiber such as NDF, ADF, cellulose and lignin were lowest at the plots of broadcasting.