We studied the infection rate of and various metacercariocidal approaches to controlling Gymnophalloides seoi for prevention of human infection in cultured and natural oysters in Korea. The selected survey areas were Aphae-do (Shinan-gun, Jeollanam-do), which is an endemic area for G. seoi, and Tongyeong (Geonsangnam-do), which is the main production area of oysters in Korea. In the Tongyeong area, the metacercariae of G. seoi were not detected in cultured oysters (0/201) or wild oysters (0/134). Seventy-two G. seoi metacercariae were observed in 33 of 265 natural oysters collected from Aphae-do; however, metacercariae were not detected in the cultured oysters (0/1101) purchased from the Daejeon Fish Market. To investigate the viability of G. seoi metacercariae, various metacercariocidal treatments were used with 3.5% saline and oyster juice used as positive controls. The metacercariae survived for 75.4 h in 3.5% saline and 112.6 h in oyster juice. After the metacercariocidal treatment, G. seoi metacercariae were survived for 13.29 min in tap water, < 20 sec in 4.3% vinegar, no effect in a rinse of the whole oyster body in 70°C water for 1 sec, but 1 sec in a rinse of the whole oyster body in 90°C water for 1 sec. The greatest metacercariocidal effect on G. seoi was from rinsing oysters in 90°C water followed by those from treatment with 20% ethyl alcohol, 4.3% vinegar, and tap water. However, we suggest that the most actual prevention to G. seoi human infection is rinsing the oysters with tap water for at least 30 min.
고온기 화색발현이 우수하고 연중생산이 가능한 수출용 스프레이국화 신품종을 육성하기 위하여 충남농업기술원 화훼 연구소에서 2010년 분홍색의 모본 ‘Borami’를 방임수분하였다. 2011년에 종자를 파종하였고, 이중 화형과 화색이 우수한 개체를 선발하여 ‘SP11-148-01’로 계통명을 부여하였다. 2011년부터 2013년까지 주년 생산성을 위해 전조, 자연, 차광재배로 특성을 각각 검정하였고, 생육 및 개화특성은 화형과 화색이 비슷한 자주색 스프레이국화인 ‘Kingfisher’를 대조품종으로 조사하였으며, 2013년 ‘Yes Ruby’로 품종등록 출원하였다. ‘Yes Ruby’는 자주색의 설상화와 연녹색의 통상화로 가을 작형 개화기는 10월 24일로, ‘Kingfisher’의 10월 29일에 비해 빨랐다. ‘Yes Ruby’의 초장과 줄기굵기는 각각 94.9cm와 7.7mm로 ‘Kingfisher’의 89.2cm와 6.4mm보다 컸다. ‘Yes Ruby’의 꽃 직경은 6.2cm로 ‘Kingfisher’의 5.0cm보다 컸으며, 꽃잎수도 ‘Yes Ruby’가 25.7개로 ‘Kingfisher’의 23.3개보다 많았다. 착화수는 두 품종 모두 비슷하였으며, 흰녹병 저항성은 ‘Yes Ruby’가 2단계, ‘Kingfisher’는 3단계의 감염 정도를 나타내어 흰녹병에 대한 저항성이 높은 것으로 나타났다. 재배상 유의사항은 ‘Yes Ruby’는 겨울철 균일한 개화가 이뤄지지 않아 겨울철 야간온도를 18℃ 이상으로 관리해줌으로써 균일개화를 유도할 수 있다. 또한 생장억제제인 Daminozide을 처리함으로써 설상화수를 늘려 볼륨감 높은 꽃봉오리를 형성할 수 있어 고온기에도 화색발현이 우수하고 연중생산이 가능하여 안정적 수출을 통한 농가소득 증대에 기여할 수 있을 것으로 기대된다.
This study was aimed to determine the effects of hybrid and inoculant on in vitro rumen digestibility and rumen fermentation indices of corn silage. Two corn hybrids(Kwangpyeongok (KW) vs. Pioneer 1543(PI)) were ensiled for 100 days with two inoculants(L. plantarum(LP) vs. L. buchneri(LB)) applied at 1.2 × 105 cfu/g of fresh forage. Silages were incubated in rumen fluid medium at 39℃ for 72 hours. Both of KW and PI had no difference(p>0.05) on in vitro digestibility of dry matter(IVDMD) and neutral detergent fiber(IVNDFD), while application of LB produced higher(p<0.05) IVDMD and IVNDFD than LP. Hybrid and inoculant applications did not affect(p>0.05) total gas volume, ammonia-N, total VFA, and acetate concentrations in the rumen. Applied LB was higher(p<0.05) propionate concentration than LP, while hybrids had no effect(p>0.05). Furthermore, the interaction effect(p<0.05) was occurred in propionate concentration. Butyrate concentration did not affected(p>0.05) by hybrid and inoculant applications, but there was an interaction effect between hybrid and inoculant(p<0.05). Applications of hybrid and inoculant had effects(p<0.05) on iso-butyrate and valerate, without any interaction effects(p>0.05). This study concluded that application of KW and PI has no effects on in vitro rumen digestibility and rumen fermentation indices of corn silage, while application of LB increase the rumen digestibility in both of corn hybrids.
This study was conducted to examine the effect of new inoculants on in vitro digestibility and fermentation characteristics of high moisture rye silage. Rye was harvested at heading stage and divided into 5 treatments, following: No additives(CON); L. plantarum R48-27(NI1); L. buchneri R4-26(NI2); mixture of NI1 and NI2 at 1:1 ratio(MIX); and L. buchneri(LB). The rye forage was ensiled into 10 L bucket silo for 100 days. In vitro digestibility of dry matter and neutral detergent fiber were highest(p<0.05) in NI2 silage. The pH in NI2 and LB silages were lower(p<0.05) than CON silage. Lactate concentration was highest(p<0.05) in NI1 silage. While concentrations of acetate and propionate were highest(p<0.05) in MIX silage. Lactates : acetate ratio was highest(p<0.05) in NI1 silage, but lowest in LB silage. Butyrate concentrations of NI2 and LB silages were lower(p<0.05) than that in CON and NI1 silages. Lactic acid bacteria (LAB) count in all inoculated silages was higher(p<0.05) than that in CON silage, while yeast count in LB silage was lower than in CON, NI1, and MIX silages. In conclusion, application of NI2 inoculant could improve potentially fermentation quality and digestibility of high moisture rye silage.
Gryllus bimaculatus is one of many cricket species known as field crickets. Also known as the African or Mediterranean field cricket or as the two-spotted cricket, it can be discriminated from other Gryllus species by the two dot-like marks on the base of its wings. G.bimaculatus is a subtropical insect and widely distributed from Africa to south Asia. After into the country, The species are popular for use as a food source for insectivorous animals like spiders and reptiles kept as pets. In 2016, was approved as a general food ingredient by Korean Ministry of Food and Drug Safety. However, domestic research on G.bimaculatus is still in its study is beginning stages. and analyze nutrtion elements as per dry conditions for processing&production of G.bimaculatus.
The growth stage passing by 50 days after hatching was highest in general component and amino acid contents.
The crickets passing by 50 days after hatching was highest 77% crude protein in condition hotair drying 60℃, 23% crude fat in condition freeze drying.
Oxya chinensis sinuosa Mistshenko(Orthoptera:Acrididae) was lived in clean and non polluted area. grasshopper was approved as a general food ingredient by Korean Ministry of Food and Drug Safety.
general component contents was 67~75% crude protein, 5~11% crude fat in a dried state. grasshopper is a high protein food. amino acids is high.
In the composition and content of amino acids, which consists of the protein is the hightes alanine, glycine(soft and sweet) and arginine, histidine(essential amino acid of children) consequently, we developed a snack for children added with grasshopper powder.
general composition of snack is 8~11% crude protein, 0.2~0.75% crude fat.
The protein content increased with increasing addition ratio.
3% grasshopper powder was the best in general preference.
벼메뚜기는 분류학적으로 메뚜기목(Orthoptera), 메뚜기과(Acrididae)에 속하는 곤충으로 작물에 피해를 주는 해충으로 인식하고 있지만 예로부터 단백질 보충을 위하여 채집하여 튀기거나 볶음요리 로 이용해 왔다. 벼메뚜기는 갈색거저리, 쌍별귀뚜라미 등과 함께 식품공전에 등록되어 있으나 1년 1세대로 가을철에 채집하여 이용하는 실정으로 공급확대에 한계가 있다. 최근 우리나라에서 벼메뚜기를 사육하고자 하는 농가와 다양한 용도로 가공을 통해 이용하려는 수요가 점차 증가하고 있으나 연중사육기술이 개발되지 않아 대량사육하는 농가가 거의 없는 실정이다. 이에 벼메뚜기의 연중대량사육기술 뿐만 아니라 인공사료 및 자동화 사육시설 개발에 따른 생산비 절감 기술 개발이 필요한 실정이다. 벼메뚜기의 먹이로는 여름작물로 옥수수, 수단그래스, 겨울작물로 밀, 보리 등의 볏과작물이 있으며 많은 양의 생엽과 발육에 적합한 작물의 선발 및 볏과작물의 통곡실 가루를 이용한 인공사료의 개발로 먹이공급 부족 시 15~20일 급여 가능하며, 벼메뚜기 사육시설로 단독형, 연결형, 절충형 등의 사육시설을 개발하여 연결형 사육시설의 수확량과 생존율이 가장 높았으며, 예취 급이 노동력이 단독형의 16% 소요되었다.