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- 저자 : Abanto, (검색결과 6 건)
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Hong, Hee-Ok,Abanto, Oliver D.,Kim, Ki-Hyun,Nam, Ki-Taeg,Son, Jong-Youn,Jung, Woo-Suk,Nam, In-Sik,Hwang, Seong-Gu Korean Society for Food Science of Animal Resource 2010 한국축산식품학회지 Vol.30 No.4
This study was conducted to determine the effects of dietary low grade soybean, fermented with Aspergillus oryzae (FSB 1) or Bacillus subtilis var. natto (FSB 2), on egg production and quality, fat and cholesterol content, and the fatty acid (FA) profile of eggs by lipid layer. A total of 18 Hi-Line strain layers, 22 wk of age, were randomly assigned to three dietary treatments: no fermented soybean (control), control with 15% FSB 1 (C + FSB 1), and control with 15% FSB 2 (C + FSB 2). The rate of egg production and egg weight were evaluated between two periods: one was from the 1st to 4th wk and the other was from the 5th to 8th wk. At the 8th wk, a total of 30 eggs were randomly selected from each treatment group and analyzed for physical quality, fat content, fatty acid composition and cholesterol content. The results showed that egg production was increased in hens fed with diets containing fermented soybeans from the 5th to 8th wk period (p<0.01). A similar tendency was observed through eight weeks' cumulative egg production (p<0.05). There were no significant differences in egg production between the C + FSB 1 and C + FSB 2 treatment groups (p>0.05). Egg weight and other physical properties did not vary between treatment groups (p>0.05). Egg yolks among different treatment groups were similar in fat content, but egg yolks in the C + FSB 1 and C + FSB 2 groups had lower oleic acid (p<0.05), higher linoleic, ${\alpha}$-linolenic, and arachidonic acids (p<0.01), and lower cholesterol content (p<0.05) than those in the control group. In conclusion, supplementation of fermented low grade soybeans might be useful as a functional feedstuff to improve egg production and quality for a healthy human diet.
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Yang, Seung-Hak,Cho, Jin-Kook,Lee, Soon-Youl,Abanto, Oliver D.,Kim, Soo-Ki,Ghosh, Chiranjit,Lim, Joung-Soo,Hwang, Seong-Gu Asian Australasian Association of Animal Productio 2013 Animal Bioscience Vol.26 No.11
Nitrate contamination in ground and surface water is an increasingly serious environmental problem and only a few bacterial strains have been identified that have the ability to remove nitrogen pollutants from wastewater under thermophilic conditions. We therefore isolated thermophilic facultative bacterial strains from wood chips that had been composted with swine manure under aerated high temperature conditions so as to identify strains with denitrifying ability. Nine different colonies were screened and 3 long rod-shaped bacterial strains designated as SG-01, SG-02, and SG-03 were selected. The strain SG-01 could be differentiated from SG-02 and SG-03 on the basis of the method that it used for sugar utilization. The 16S rRNA genes of this strain also had high sequence similarity with Geobacillus thermodenitrificans $465^T$ (99.6%). The optimal growth temperatures ($55^{\circ}C$), pH values (pH 7.0), and NaCl concentrations (1%) required for the growth of strain SG-01 were established. This strain reduced 1.18 mM nitrate and 1.45 mM nitrite in LB broth after 48 h of incubation. These results suggest that the G. thermodenitrificans SG-01 strain may be useful in the removal of nitrates and nitrites from wastewater generated as a result of livestock farming.
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홍희옥,남기택,손종연,정우석,황성구,남인식,Oliver D. Abanto 한국축산식품학회 2010 한국축산식품학회지 Vol.30 No.4
This study was conducted to determine the effects of dietary low grade soybean, fermented with Aspergillus oryzae (FSB 1) or Bacillus subtilis var. natto (FSB 2), on egg production and quality, fat and cholesterol content, and the fatty acid (FA)profile of eggs by lipid layer. A total of 18 Hi-Line strain layers, 22 wk of age, were randomly assigned to three dietary treatments: no fermented soybean (control), control with 15% FSB 1 (C + FSB 1), and control with 15% FSB 2 (C + FSB 2). The rate of egg production and egg weight were evaluated between two periods: one was from the 1st to 4th wk and the other was from the 5th to 8th wk. At the 8th wk, a total of 30 eggs were randomly selected from each treatment group and analyzed for physical quality, fat content, fatty acid composition and cholesterol content. The results showed that egg production was increased in hens fed with diets containing fermented soybeans from the 5th to 8th wk period (p<0.01). A similar tendency was observed through eight weeks' cumulative egg production (p<0.05). There were no significant differences in egg production between the C + FSB 1 and C + FSB 2 treatment groups (p>0.05). Egg weight and other physical properties did not vary between treatment groups (p>0.05). Egg yolks among different treatment groups were similar in fat content,but egg yolks in the C + FSB 1 and C + FSB 2 groups had lower oleic acid (p<0.05), higher linoleic, α-linolenic, and arachidonic acids (p<0.01), and lower cholesterol content (p<0.05) than those in the control group. In conclusion, supplementation of fermented low grade soybeans might be useful as a functional feedstuff to improve egg production and quality for a healthy human diet.
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Nonlinear regression models based on scale mixtures of skew-normal distributions
Aldo M. Garay,Víctor H. Lachos,Carlos A. Abanto-Valle 한국통계학회 2011 Journal of the Korean Statistical Society Vol.40 No.1
An extension of some standard likelihood based procedures to nonlinear regression models under scale mixtures of skew-normal (SMSN) distributions is developed. This novel class of models provides a useful generalization of the symmetrical nonlinear regression models since the random terms distributions cover both symmetric as well as asymmetric and heavy-tailed distributions such as skew-t, skew-slash, skew-contaminated normal,among others. A simple EM-type algorithm for iteratively computing maximum likelihood estimates is presented and the observed information matrix is derived analytically. In order to examine the robust aspect of this flexible class against outlying and influential observations, some simulation studies have also been presented. Finally, an illustration of the methodology is given considering a data set previously analyzed under normal and skew-normal nonlinear regression models.
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홍희옥,Woo Jung Kim,Sang Ho Yoo,Tae Jin Kim,Young Jin Kim,Byung Moon Jung,Sung Seob Yun,황성구,Oliver D. Abanto 한국식품영양과학회 2010 Journal of medicinal food Vol.13 No.3
It has been thought that soybean products rich in phytoestrogenic isoflavones are effective in promoting bone metabolism in ovariectomized rats. However, it is not clear if such an effect can be changed by germination of soybean and can be observed in growing males. The present study was undertaken to determine the effects of different concentrations of dietary ungerminated and germinated soybean (UGS and GS, respectively) on bone metabolism in young male rats. Forty-nine 6-week-old male Sprague-Dawley rats were assigned to seven dietary treatment groups: AIN 93G (control); control with UGS powder at 3% (UGS-L), 15% (UGS-M), or 30% (UGS-H); and control with GS powder at 3% (GS-L), 15% (GS-M), or 30% (GS-H). The biomarkers of bone metabolism (plasma and urinary Ca and P) and the physical properties and mineral content of bones were measured. Plasma osteocalcin and urinary deoxypyridinoline levels were not affected by soybean diets. The plasma P level was significantly elevated by dietary soybeans (P<.001). However, there was a negative correlation (r=−0.555) between plasma P level and dietary UGS level (P<.01). Between the UGS and GS groups, the P level of the GS-M group was significantly higher than that of the UGS-M group (P<.001). The tibial weight was decreased with low to medium doses of soybeans, but not with higher levels. Femoral bone strength was improved in the UGS-H, GS-M, and GS-H groups. The P contents of femoral and tibial bones were increased in all UGS groups as well as in GS-M and GS-H groups. In conclusion, soybean supplementation in young growing male rats improved bone mineralization and bone strength.
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