• 생명과학회지
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• 제22권10호
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• pp.1392-1398
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• 2012

본 연구는 한우 거세우의 비육시 급여 조사료의 종류가 발육 및 도체특성에 미치는 영향을 구명하고자 수행하였다. 한우 거세우 21두를 3처리(건초, 갈대 및 갈대+볏짚), 처리당 7두씩 완전 임의 배치하였다. 시험결과 개시체 중 및 종료체중은 처리구별(대조, T1 및 T2)로 각각 125.5, 128.3 및 128.3 kg과 697.4, 614.6 및 706.7 kg으로 나타났다. 일당증체량은 대조구(0.70 kg/d)와 T2 처리구(0.71 kg/d)가 T1 처리구(0.60 kg/d)보다 향상된 경향을 나타났지만 유의적인 차이는 없었다. 건물섭취량은 유의적인 차이는 없었지만 T1 처리구가 다른 처리구에 비해 비교적 낮았다. 육량특성에서 도체중은 대조구와 T2처리구간에는 차이가 없었지만, T2처리구는T1 처리구에 비해 높았다(p<0.05). 등지방두께와 등심단면적은 대조구와 T2처리구가 T1처리구 보다 높았고, 육량등급(A:B:C, %)은 T1처리구(43:57:0)가 다른 처리구(대조구 0:71:29, T2 29:42:29)에 비해 높았다. 육질특성에서는 지방색과 조직감은 처리구 간 유의적인 차이가 없었다. 그러나 육색과 성숙도는 T2 처리구에 비해 T1 처리구가 유의적으로 높았다(p<0.05). 근내지방도 및 육질1등급이상 출현율은 T1처리구에 비해 대조구와 T2처리구가 높았다. 본 연구의 결과를 종합해 볼 때 거세한우 비육시 조사료로서 갈대와 볏짚을 혼합급여할 때 발육, 사료 이용성 및 도체 성적이 향상되어 갈대가 한우의 조사료원으로서 활용가치가 있는 것으로 판단되었다.

• Asian-Australasian Journal of Animal Sciences
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• 제23권11호
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• pp.1427-1435
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• 2010

The present study was conducted to examine the effect of a stair-stepped feed intake pattern on growth, feed efficiency, and meat quality of Hanwoo steers. Twenty-seven 11-month-old Hanwoo steers were randomly divided into three groups. The control group was fed according to the Korean steer feeding program, and the other two groups were fed according to an alternated feeding schedule of 3-2-4-2 months. During the first three months of the experiment, treatment group 1 (T1) and treatment group 2 (T2) were fed 20% and 30% less than the control group, respectively. For the following two months, the T1 group was fed 20% more than the control group while the T2 group was fed 20% less than the control group. In the third step, T1 and T2 groups were fed 20% and 10% less, respectively, than the control group for four months. In the last two months, T1 and T2 groups were fed 20% more than the control group. After the stair-step feeding trial, steers were fed concentrated feed ad libitum for five months. The altered feed intake pattern did not affect daily body weight gain. However, daily feed intake tended to decrease and growth efficiency tended to increase in the two treatment groups compared to the control group. Altered feed intake also affected blood metabolite levels. The serum glucose and BUN level of the T1 group increased in the first re-fed period compared to the T2 and control groups. The serum cholesterol level of the T2 group decreased in the first restricted-re-fed growth period compared to the T1 and control groups. The serum NEFA levels of the two treatment groups increased from the first restricted period compared to the controls. The serum insulin level of the T2 group increased in the last period compared to the T1 and control groups. Regarding meat yield index, the control group was significantly higher than the T2 group (p<0.05). Regarding meat yield grade, the carcass back fat thickness of the T2 group was significantly higher than the control group (p<0.05). In marbling score, the T1 group was the highest (4.9), followed by the control group (4.1) and the T2 group (4.0). These results indicate that using a stair-stepped growth pattern (T1) can contribute to improvements in growth efficiency and muscle marbling.

• 한국해양환경ㆍ에너지학회지
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• 제12권2호
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• pp.91-95
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• 2009

저서성 미세조류의 성장에 미치는 부착기질의 영향을 알기 위해 서로 다른 크기의 glass bead를 첨가하여 저서성 미세조류 Nitzschia sp.(진해만 클론)의 성장을 조사하였다. 연구에 사용된 glass bead의 크기는 0.09-0.15 mm(G1), 0.25-0.50 mm(G2), 0.75-1.00 mm(G3) 그리고 1.25-1.65 mm(G4)이며, glass bead를 첨가하지 않는 대조구도 설정하였다. Nitzschia sp.의 가장 높은 성장속도(0.37/day)와 최대세포밀도($9,232{\pm}840$ cells/mL)는 가장 작은 크기의 glass bead를 첨가한 G1에서 나타났다. 그리고 성징속도와 최대세포밀도는 glass bead 크기의 증가와 함께 감소하였다(G4의 성장속도와 최대세포밀도는 각각 0.24/day와 $6,397{\pm}524$ cells/mL였다). 더욱이 대조구의 성장속도는 실험구 G1에서 G3의 성장속도보다 상당히 낮았다. 이 결과에서 Nitzschia sp.와 같은 저서성 미세조류를 위한 부착기질은 성장속도 뿐만 아니라 세포밀도에도 큰 영향을 주는 것으로 나타났다. 따라서 부착미세조류의 생리실험을 위해서는 예비실험으로 부착기질의 유무 및 대상 종에 적합한 부착입자의 크기의 고려가 필요할 것으로 보인다.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제26권1호
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• pp.5-17
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• 2000

To evaluate the possible therapeutic effects of growth hormone and vitamin C on multiorgan failure, a rat model was developed for LPS-induced sepsis. Using this model, the effects of growth hormone and vitamin C on tissue damages, catalase and i-NOS activities, and MDA levels were examined in the lung and liver. The level of TNF- in plasm was also examined. Male, Sprague-Dawley rats were injected with LPS intraperitoneally then divided into 3 groups : positive controls injected with LPS only, the ones injected with growth hormone or vitamin C immediately after the LPS injections. The lung and the liver were then isolated, blood samples were collected at 24 or 48 hours after the LPS injection, then examined for histopathological and biochemical changes. The results obtained were as follows. 1. LPS induced sinusoid vasodilation and mild destruction of lobular structure in the liver. In the lung, alveolar structure appeared to be thickened and interstitial edema was observed. The levels of MDA in the liver and the lung was increased by LPS, while the activity of catalase was decreased. The activity of i-NOS of those tissues was also increased, which was more pronounced at 24 hr. The level of TNF- in plasm was increased by LPS 2. In the lung, vitamin C suppressed lymphocyte and neutrophil infiltration, alveolar wall thickening and interstitial edema. In the liver, vitamin C protected against the destruction of the lobular structure. The activity of catalase reduced by LPS was reversed partly by vitamin C. The activity of i-NOS enhanced by LPS was also reversed by vitamin C. The level of TNF- in plasm reduced in some animals by vitamin C, which however was not significant statistically(p<0.05). 3. Growth hormone showed similar protective effects against inflammation and damages in the liver and lung tissues. Growth hormone reversed partly the LPS effects on the level of MDA, the activity of catalase and i-NOS induction in the liver and the lung. Growth hormone reduced plasma level of TNF-${\alpha}$ substantially, which contrasted from vitamin C. Besides this, overall protective effects of growth hormone against LPS-induced experimental sepsis were similar to those of vitamin C. From this results, the mechanism of growth hormone on suppression of LPS-induced tissue damage might be associated with production of antioxidative enzyme and suppression of plasma TNF- level.

• Asian-Australasian Journal of Animal Sciences
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• 제13권6호
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• pp.791-794
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• 2000

Two hundred sixteen crossbred ($Landrace{\times}Yorkshire$) castrates with an average weight of $7.4{\pm}0.3kg$ were used in a $3{\times}3$ factorial treatment array. The treatments were three levels of Herb mixture (HM; 0, 0.40 and 0.80 g/kg BW/day) and three levels of dietary nutrient (17.30% CP, Level-1; 17.90% CP, Level-2; and 18.50% CP, Level-3). The influence of HM intake and nutrient level on growth performance and ADG in 0.40- and 0.80-HM pigs increased significantly (p<0.01) as nutritional level was elevated. Although very little enhancement of ADG was observed at Level-1, peak ADG occurred in 0.8-HM treated pigs at Level-3. Feeding of 0.80 g HM/kg/d to pigs consuming Level-1 diet resulted in a 8.7% increase in ADG compared with control pigs, whereas the increase in ADG as a result of 0.80-HM with Level-3 treatment was 39%. ADFI in Level-2 pigs improved linearly (p<0.01) as HM level was increased. Treatment with HM resulted in a 12.0% increase ranging 4.7 to 20% in the ADFI compared with respective controls. ADFI at all nutritional level was significantly higher in 0.80-HM pigs (p<0.02). F/G in Level-2 pigs improved significantly as HM was fed (p<0.01), and in HM-0.80 pigs was also significantly improved as nutritional level was increased (p<0.05). Pigs fed HM had higher bone mineral density (BMD) at Level-1, longer dorsal spine length (DSL) at level-2 (p<0.05) than pigs fed basal diets. Pigs fed HM tended to higher BMD and DSL than those fed basal diets. The level of GH secretion declined with age. There was no difference between treatments (p>0.05) in the serum growth hormone at the same age. The GH was higher in pigs fed HM than those fed basal diets and increased in all pigs after 2wks feeding. A positive effect of added Herb-Mix on growth performance in weaned pigs was demonstrated by measuring the serum growth hormone, bone mineral density and length of dorsal spine.

• Journal of Microbiology and Biotechnology
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• 제23권6호
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• pp.856-863
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• 2013

Application of rhizospheric fungi is an effective and environmentally friendly method of improving plant growth and controlling many plant diseases. The current study was aimed to identify phytohormone-producing fungi from soil, to understand their roles in sesame plant growth, and to control Fusarium disease. Three predominant fungi (PNF1, PNF2, and PNF3) isolated from the rhizospheric soil of peanut plants were screened for their growth-promoting efficiency on sesame seedlings. Among these isolates, PNF2 significantly increased the shoot length and fresh weight of seedlings compared with controls. Analysis of the fungal culture filtrate showed a higher concentration of indole acetic acid in PNF2 than in the other isolates. PNF2 was identified as Penicillium sp. on the basis of phylogenetic analysis of ITS sequence similarity. The in vitro biocontrol activity of Penicillium sp. against Fusarium sp. was exhibited by a 49% inhibition of mycelial growth in a dual culture bioassay and by hyphal injuries as observed by scanning electron microscopy. In addition, greenhouse experiments revealed that Fusarium inhibited growth in sesame plants by damaging lipid membranes and reducing protein content. Co-cultivation with Penicillium sp. mitigated Fusarium-induced oxidative stress in sesame plants by limiting membrane lipid peroxidation, and by increasing the protein concentration, levels of antioxidants such as total polyphenols, and peroxidase and polyphenoloxidase activities. Thus, our findings suggest that Penicillium sp. is a potent plant growth-promoting fungus that has the ability to ameliorate damage caused by Fusarium infection in sesame cultivation.

• Journal of Information Processing Systems
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• 제2권1호
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• pp.58-65
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• 2006

Accurate and efficient monitoring of dynamically changing environments is one of the most important requirements for ubiquitous network environments. Ubiquitous computing provides intelligent environments which are aware of spatial conditions and can provide timely and useful information to users or devices. Also, the growth of embedded systems and wireless communication technology has made it possible for sensor network environments to develop on a large scale and at low-cost. In this paper, we present the design and implementation of a monitoring system that collects, analyzes, and controls the status information of each sensor, following sensor data extracted from each sensor node. The monitoring system adopts Web technology for the implementation of a simple but efficient user interface that allows an operator to visualize any of the processes, elements, or related information in a convenient graphic form.

• 대한수의학회지
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• 제13권2호
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• pp.131-136
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• 1973

Effect of Burdizzor's bloodless castration on blood picture, serum transaminase activity and growth of Korean calves were observed for 90 days period on indoor feeding. The results obtained were as follows; 1. In complete blood count, hemoglobin, hematocrit, total leucccyte count were shown only little changes comparing with that of controls. 2. In diffenentiaI count, the lymphocytes were significantly decreased in first week following castration, while the neutophils were relatively decreased (with a relative lymphocytosis) in later period of experiment (2 to 12 weeks). 3. Serum transaminase(SGOT and SGPT) and alkaline phosphatase activities were not influenced by Burdizzor's bloodless castration. 4. On average total gain of body weight, no significant differences were found between castrated and noncastrated groups during the experimental period.

• The Plant Pathology Journal
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• 제33권6호
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• pp.597-601
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• 2017

The clpks18 gene was first cloned and identified in Curvularia lunata. It contains 6571 base pairs (bp) and an 6276 bp open reading frame encoding 2091 amino acids. The ClPKS18 deletion mutant displayed an albino phenotype, and almost lost the ability to product 5-(hydroxymethyl) furan-2-carboxylate (M5HF2C) toxin, implying that clpks18 gene in C. lunata is not only involved in 1,8-dihydroxynaphthalene melanin synthesis, but also relatively associated with M5HF2C toxin biosynthesis of the pathogen. The pathogenicity assays revealed that ${\Delta}ClPKS18$ was impaired in colonizing the maize leaves, which corresponds to the finding that ClPKS18 controls the production of melanin and M5HF2C in C. lunata. Results indicate that ClPKS18 plays a vital role in regulating pathogenicity of in C. lunata.

• 한국토양동물학회지
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• 제8권1_2호
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• pp.1-6
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• 2003

Hox genes are pivotal in the control of morphogenesis along the anterior-posterior (AP) axis in various bilaterians. Several indications suggest their involvement in the control of cell growth and regeneration. For the labial full-length fragment, RACE-PCR was employed to obtain the 3' and 5' franking regions. Semi-quantitative RT-PCR analysis revealed that the labial expression began to increase at 12 hours after amputation. The peak expression was approximately 1.5-fold more than the unamputated controls. This result could give us information on the significance of Hox genes and the relationships between Hox genes during regeneration.