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The effect of boiled feed on trace elements of longissimus dorsi muscle in Hanwoo steers
( Jaeyoung Kim ),( Meyungok Jung ),( Sangkeun Jin ),( Hyunseok Seo ),( Jungheun Ha ),( Jungseok Choi ) 한국축산학회(구 한국동물자원과학회) 2021 한국축산학회지 Vol.63 No.1
Boiled feed is obtained by mixing and boiling agricultural by-products such as rice straw, rice bran, and bean curd with grains. The study explored the change in fatty acid, free amino acid, nucleotide, mineral, cholesterol, myoglobin and collagen of longissimus dorsi muscle in Hanwoo steers fed with boiled feed. Forty steers, 20 heads per group, were divided into two groups: a control group and a boiled feed group. The steers were raised for 10 months. The boiled feed group was enriched with palmitoleic acid, oleic acid, arachidonic acid and unsaturated fatty acids compared with the control group. There were no significant differences in amino acid and nucleic acid composition between the two groups. The boiled feed group contained higher levels of iron and manganese in the boiled feed group compared with the control group. The total cholesterol level was significantly increased, whereas calorie levels, myoglobin and collagen composition showed no differences. As the supply of boiled feed increases the content of fatty acids, unsaturated fatty acids and minerals related to flavor, it should be a feed that leads to the production of high-quality beef.
Development of New Preventive and Therapeutic Vaccines for Tuberculosis
Kwon, Bo-Eun,Ahn, Jae-Hee,Min, Seunghwan,Kim, Hyeongseop,Seo, Jungheun,Yeo, Sang-Gu,Ko, Hyun-Jeong 한국조명·전기설비학회 2018 한국조명·전기설비학회 학술대회논문집 Vol. No.
<P>Tuberculosis (TB) is a contagious disease that has been responsible for the death of one billion people in the last 200 years. Until now, the only vaccine approved for the prevention of TB is Bacillus Calmette-Guérin (BCG), which is prepared by attenuating <I>Mycobacterium bovis</I>. However, one of the limitations of BCG is that its preventive effect against pulmonary TB varies from person to person. Therefore, there arises a need for a new TB vaccine to replace or supplement BCG. In this review, we have summarized the findings of current clinical trials on preventive and therapeutic TB vaccine candidates. In addition, we have discussed a novel vaccination approach using the cell-based vaccine presenting early secretory antigenic target-6 (ESAT-6), which is a potent immunogenic antigen. The role of ESAT-6 in hosts has also been described.</P>