본 연구는 반려견 양육활동에 따른 외로움감소 및 삶의 만족도에 미치는 영향을 알아 보기 위하여 수도권에 있는 20대에서 60대에 이르기 까지 반려동물 양육활동을 하고 있 는 290명을 대상으로 설문을 실시하였고, 인구사회학적 특성에 따라 반려인의 외로움 감 소 및 삶의 행복감과 반려견에 대한 애착 및 만족도에 미치는 영향을 알아보기 위하여 회귀분석을 실시한 결과는 다음과 같다. 성별, 연령, 학력, 결혼유무, 종교인수 및, 동거인 수에 따라 외로움 감소는 유의미한 차이를 보이지 않았다. 하지만 행복감과 만족도는 성별과 결혼 유무에 따라 유의미한 차 이를 나타냈고, 연령, 학력, 종교유무 및 동거인 수에는 차이가 나타나지 않았다. 또한 반 려견에 대한 애착과 양육활동의 긍정적인 마인드는 성별에만 유의미한 차이를 보였다. 하 지만 연령, 학력, 결혼여부, 종교유무 및 동거인 수에는 유의미한 차이를 보이지 않았다. 반려견을 양육하는 반려인들에게 미치는 긍정적인 측면은 다양한 반려인들이 공유할 수 있도록 하고, 반려견 양육시 고려해야 할 사례는 예비 반려인을 위해 정보가 제공되어 반 려견 양육활동에 도움이 되길 기대해 본다.

Ferulic Acid (FA) is a metabolite of phenylalanine and tyrosine, a phenolic compound commonly found in fruits and vegetables. Several studies have shown that FA has various functions such as antioxidant effect, prevention of cell damage from irradiation, protection from cell damage caused by oxygen deficiency, anti-inflammatory action, anti-aging action, liver protective effect and anti-cancer action. In this study, we investigated the maturation rate, intracellular glutathione (GSH) and reactive oxygen species (ROS) of porcine oocytes by adding FA to the in vitro maturation (IVM) medium and examined subsequent embryonic developmental competence at 5% oxygen through parthenogenesis. There is no significant difference between the control group (0μM) and treatment groups (5μM, 10μM, 20μM) on maturation rates. Intracellular GSH levels in oocyte treated with 5μM of FA significantly increased (P < 0.05), and 20μM of FA revealed significant decrease (P < 0.05) in intracellular ROS levels compared with the control group. Oocytes treated with FA exhibited significantly higher cleavage rates (79.01% vs 89.19%, 92.20%, 90.89%, respectively) than the control group. Oocytes treated with 10μM showed significantly higher blastocyst formation rates (28.3% vs 40.3%, respectively) after PA than the control group. Total cell numbers in blastocyst of 10μM FA displayed significantly higher (39.4 vs 51.9, respectively) than the control group. In conclusion, these results suggested that treatment with FA during IVM improved the developmental potential of porcine embryos by increasing intracellular GSH synthesis and reducing ROS levels. Also, there was an improvement of cleavage rate, blastocyst formation and total cell numbers in blastocysts. It might be associated with Keap1-Nrf2 pathway as an antioxidant regulate pathway that plays a crucial role in determining the sensitivity of cells to oxidative damages by regulating the basal and inducible expression of enzymes which is related to detoxification and anti-oxidative effects, stress response enzymes and/or proteins and ABC transporters.

Hunter's color value “a” in dried-persimmon of table and full ripe fruit was higher than that in unripe fruit. In case of soluble solid content, full ripe fruit was 50o Brix, the highest degree, while unripe fruit was 40o Brix, the lowest degree. PPO activation of unripe fruit was 4.7, which was higher than table-ripe fruit (0.7) and full ripe (1.0). Polyphenol oxidase activation remained even while drying, but there was no difference in PPO activation degree as drying period increased. Total phenol content of unripe fruit was 101.4, which was higher than table-ripe fruit (57.5) and full ripe fruit (67.4). Total phenol content level increased as drying period increased, which was based on fresh weight. Hardness of unripe and table ripe fruit continued to decrease until three weeks during softening. After that, hardness was high and it started drying. However, in full ripe fruit, hardness increased after two weeks and softening was fast during the drying period, and its weight reduction rate was lower than that of unripe and table ripe fruit.

The boar sperm has more lipid droplets and specialty of seminal plasma compared with other species, causing difficulties of freezing sperm and decreases for the utilization of frozen semen into the artificial insemination. However, several studies reported significant results for the recovery of sperm motility and reproductive by addition of cryoprotectants and seminal plasma after thawing. This study was designed to investigate the effects of supplementation of trehalose or glycerol in the LEY (lactose and egg yolk in BTS) solution for the conventional freezing and vitrification process. Two boars aged 16 months were used to collect semen for 2 times in a week. The samples were allotted to 3 freezing solutions (LEY + glycerol 10.5% + OEP 1.5%, LEY + trehalose 1M + OEP 1.5%, and sucrose 1.5M + trehalose 1 M + OEP 1.5%) after centrifugation at 800 g for 10 minutes. Semen was equilibrated in freezing solutions for 10 minutes and injected into plastic straws with 2∼3 air bubbles to minimize freezing damages. Vitrification was performed to locate sperm in 5 cm above LN2 for 5 minutes, and the conventional freezing was conducted with an automatic freezer. Motility and survival rates were measured by CASA (Computer assisted sperm an alyzing system) and FITC (Fluorescein isothiocyanate), respectively after thawing semen at 50℃ for 12 seconds. The results were analyzed by ANOVA with STATVIEW statistical program. The vitrificatioin solution (LEY + 10.5% glycerol + 1.5% OEP) presented higher motility (20.9%) than other solutions while the solution (LEY + 1M trehalose + 1.5% OEP) showed the lowest (motility : 5.2%). However, survival rates of vitrified sperms detected by FITC showed 1~4% live sperms in almost of dead sperms at all vitrification solutions’ groups, but survival rate of freezing solution of LEY + 1M trehalose + 1.5% OEP LEY and LEY + 10.5% glycerol + 1.5% OEP were showed 49%, and 79%, respectively. There were differences (P<0.05) survival rate of conventional freezing in LEY + 10.5% glycerol + 1.5% OEP and LEY + 1M trehalose + 1.5% OEP and the remaining showed no differences. The results suggested that vitrified boar semen was not enough to be utilized for the artificial insemination, but it showed possibility to utilize for ICSI and conventional freezing with glycerol would be useful method for artificial insemination in pig while we choose the outstanding semen against tolerance to freezing damages.

The genus Oberea belongs to the tribe Saperdini (Coleoptera: Cerambycidae) and contains about 270 described species in the world. The genus can be defined by the combination of the following characters: body elongate, cylindrical; legs very short, apex of hind femur not reaching beyond abdominal sternite II. O. vittata Blessig was reconfirmed its distribution in South Korea during the study. Two species are newly reported here: O. heyrovskyi Pic and O. tsuyukii Takashi & Ohbayashi. We provide a revised checklist of 12 species and a pictorial key to species for the identification, with diagnostic characters of O. heyrovskyi and O. tsuyukii.