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하종규 아세아·태평양축산학회 2023 Animal Bioscience Vol.36 No.1
The Asian-Australasian Association of Animal Production Societies (AAAP), the only international scientific organization in animal science representing Asia and Pacific region, showed a remarkable development since its inception in 1980. The number of member countries increased from 8 to 19 while 19 congresses were held in 11 different member countries. The AAAP also helped creating the official journal, Asian-Australasian Journal of Animal Sciences in 1988 with the title being changed to Animal Bioscience in 2021. It is an open access journal indexed by most global databases and has become one of the most respected global journals in animal science. Through scientific meetings and journal publication, the AAAP has made a tremendous contribution to the advancement of animal science and industry throughout its member countries over the last 40 years. This paper summarizes the advances in animal science in the Asia–Pacific region, together with the roles of the AAAP scientists and journals in developing animal science.
Neocalimastix frontalis 로 조제한 fungal additive 가 반추위 발효에 미치는 영향
하종규,강민원,이상석 한국동물자원과학회 2000 한국축산학회지 Vol.42 No.5
The anaerobic rumen fungus, N. frontalis N1-1, which had a high fiber-degrading capacity was selected to make a fungal additive and to evaluate its effects on ruminal fermentation. The fungal additive was added at the level of 0.03, 0.06, 0.09, and 0.12%(w/v) in Lowe's medium and pH, gas production, dry matter degradation, CMCase, xylanase, and volatile fatty acid(VFA) were determined after 2, 4, and 6 days of incubation. Addition of high level of fungal additive (0.09 and 0.12%) decreased pH compared with control treatment(P$lt;0.05). The gas production was increased by the addition of fungal additive. The highest increase in gas production was achieved with 0.09, and 0.1% supplementation after 6 days incubation(P$lt;0.05). The degradation of dry matter was increased with incubation time up to 6 days and was significantly lower in control. Activities of carboxymethylcellulase(CMCase), and xylanase in the culture supernatant was increased by the addition of fungal additive with highest increase after 4 days of incubation. Total VFA production and acetate:propionate ratio also tended to increase by fungal additive after 4 days of incubation similar to results of enzyme activities.
Buffer 제의 급여가 면양의 반추위액 및 혈액성상에 미치는 영향
하종규,Emerick, R J 한국축산학회 1984 한국축산학회지 Vol.26 No.8
An experiment using a double 4 × 4 Latin square design was conducted to study the effects of NaHCO₃, limestone, and bentonite at 2% levels on feed intake, rumen fermentation, and blood mineral concentrations of canulated lambs changed abruptly from brome hay to a 92% concentrate diet followed by a 7-day feeding period. Although slight benefits regarding feed intake and maintenance of rumen pH were obtained by adding NaHCO₃ to the high-concentrate diet, buffers generally did not prevent the acidosis-related changes in rumen lactic acid, VFA, or plasma mineral concentrations occurring after high-concentrate feeding.