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유기축산 사료첨가제로서 소나무껍질 추출물 피타민의 산란계에 대한 급여 효과
홍병주,박병성,김병완,오진석 한국유기농업학회 2008 한국유기농업학회지 Vol.16 No.2
This study was conducted to evaluate the effects of dietary pitamin, pine bark extracts, as a organic livestock feed additives on the egg production and egg quality of laying hens. One hundred-fifty laying hens (Hyline brown) were randomly allocated to one of the following 3 treatment groups for 6 weeks: control, pitamin 0.1% and pitamin 0.2%. The egg production of hens fed the diet containing 0.1% pitamin was similar to that of the control; however, the egg production of the pitamin 0.2% group was significantly lower than that of the other groups (p<0.05). Additionally, the Haugh unit was higher in groups fed diets that contained 0.1% or 0.2% pitamin than in the control group (p<0.05), but no significant difference in egg shell thickness and egg shell breaking was observed between the pitamin 0.1% group and the control group. Furthermore, the concentration of cholesterol in eggs produced by the pitamin 0.1% group was significantly lower than that of the other groups (p<0.05). Moreover, the saturated fatty acid content of eggs from hens in the pitamin 0.2% group was lower than that of eggs produced by hens in the other groups, whereas the unsaturated fatty acid content of eggs produced by hens in the pitamin 0.2% group was higher than that of eggs produced by hens in the other groups (p<0.05). Finally, the values corresponding to the storage days, Haugh unit, yolk index and albumin index of eggs produced by hens that were provided with a diet that contained 0.1% or 0.2% pitamin were significantly higher than those of the control group (p<0.05). Taken together, these results suggest that providing hens with a diet supplemented with 0.1% pitamin as a organic livestock feed additives may extend the shelf-life of eggs with maintaining the egg quality and egg production in laying hens.
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A Real-time Compact Structured-light based Range Sensing System
홍병주,박찬오,서남석,조준동 대한전자공학회 2012 Journal of semiconductor technology and science Vol.12 No.2
In this paper, we propose a new approach for compact range sensor system for real-time robot applications. Instead of using off-the-shelf camera and projector, we devise a compact system with a CMOS image-sensor and a DMD (Digital Micromirror Device) that yields smaller dimension (168x50x60mm) and lighter weight (500g). We also realize one chip hard-wired processing of projection of structured-light and computing the range by exploiting correspondences between CMOS imagesensor and DMD. This application-specific chip processing is implemented on an FPGA in real-time. Our range acquisition system performs 30 times faster than the same implementation in software. We also devise an efficient methodology to identify a proper light intensity to enhance the quality of range sensor and minimize the decoding error. Our experimental results show that the total-error is reduced by 16% compared to the average case.
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홍병주,이해종,이영철 ( Byung J . Hong,Hae J . Rhee,Young C . Rhee ) 한국축산학회 1975 한국축산학회지 Vol.17 No.4
A series of experiments was carried out to determine the effects of supplementing acorn as a chicken feed ingredient on the chick growth, feed efficiency, nitrogen retention and metabolizable energy value. The results obtained were summarized as follows: 1. At a level of 1% supplementation to growing chick ration, tannins depressed the growth of chicks and their feed consumption, but the inclusion of methionine and choline partially alleviated the toxic effects. 2. Diet containing 2% tannin was toxic and caused depressed body weight, decrease in egg production, egg weight, Haugh units and feed consumption, but reduction in body weight and egg production were prevented to some extent by the addition of methionine and choline to the diet. 3. In the nutritionally balanced starter diets, the addition of raw acorn up to the level of 10% may replace equivalent amount of corn without adverse effect. 4. Raw acorn reduced the grow th rate of starter chicks remarkably and those treatments of water, heat and alkali improved the growth rate to some degree. Nitrogen retention were decreased when the birds fed acorn containing diets. The water soaked acorn gave the highest ME value among all the processing methods. 5. Tannin content of acorn was decreased markedly by water soaking.
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