• Journal of Broadcast Engineering
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• v.27 no.5
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• pp.794-807
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• 2022

Although registration of dogs is mandatory according to the revision of the Animal Protection Act, the registration rate is low due to the inconvenience of the current registration method. In this paper, a performance improvement study was conducted on the dog face recognition technology, which is being reviewed as a new registration method. Through deep learning learning, an embedding vector for facial recognition of a dog was created and a method for identifying each dog individual was experimented. We built a dog image dataset for deep learning learning and experimented with InceptionNet and ResNet-50 as backbone networks. It was learned by the triplet loss method, and the experiments were divided into face verification and face recognition. In the ResNet-50-based model, it was possible to obtain the best facial verification performance of 93.46%, and in the face recognition test, the highest performance of 91.44% was obtained in rank-5, respectively. The experimental methods and results presented in this paper can be used in various fields, such as checking whether a dog is registered or not, and checking an object at a dog access facility.

• Journal of Broadcast Engineering
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• v.27 no.1
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• pp.133-145
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• 2022

Compared to the continuously increasing dog population and industry size in Korea, systematic analysis of related data and research on breed classification methods are very insufficient. In this paper, an automatic breed classification method is proposed using deep learning technology for 14 major dog breeds domestically raised. To do this, dog images are collected for deep learning training and a dataset is built, and a breed classification algorithm is created by performing transfer learning based on VGG-16 and Resnet-34 as backbone networks. In order to check the transfer learning effect of the two models on dog images, we compared the use of pre-trained weights and the experiment of updating the weights. When fine tuning was performed based on VGG-16 backbone network, in the final model, the accuracy of Top 1 was about 89% and that of Top 3 was about 94%, respectively. The domestic dog breed classification method and data construction proposed in this paper have the potential to be used for various application purposes, such as classification of abandoned and lost dog breeds in animal protection centers or utilization in pet-feed industry.

• Parasites, Hosts and Diseases
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• v.59 no.3
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• pp.303-309
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• 2021

In this study, we intended to describe an unrecorded species of heterophyid trematode recovered from the small intestine of a Korean raccoon dog, Nyctereutes procyonoides koreensis, in Korea. A total of 13 small flukes were collected from a deceased Korean raccoon dog which was found in Chuncheon-si, Gangwon-do, Korea in May 2017. The trematode body were covered with many small spines, rectangular, broader than long, 807-1,103 ㎛ long and 1,270-1,550 ㎛ wide. Oral sucker in the anterior end slightly smaller than acetabulum. Pharynx muscular and well developed. Esophagus relatively long and sigmoid. Acetabulum small and located at median in anterior 2/5 portion. Ceca bifurcated at the anterior of genital pore and acetabulum and terminated at testis level. Testes larger, deeply lobed and located at the near of posterior end of body. Ovary small, triangular and located at the slight left of median and the anterior of left testis. Vitelline follicles dendritic and extend from the middle level of esophagus to the posterior portion of body. Eggs embryonated, operculated, small and 33-35×15-16 ㎛ in size. Based on the morphological characteristics, the small heterophyid flukes recovered from the small intestines of Korean raccoon dog, N. procyonoides koreensis, were identified as Euryhelmis squamula (Digenea: Heterophyidae). Accordingly, this species of heterophyid flukes is to be a new trematode fauna in Korea by this study.

• Journal of Veterinary Clinics
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• v.21 no.2
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• pp.197-199
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• 2004

A 2-month-old intact female English Cocker Spaniel weighting 2.8 kg was presented with pollakiuria and urinary incontinence. On the inspection, moisture around the perineum and hindlegs was observed with a mild urine odor. No other abnormalities were detected on physical examination. Retrograde vaginourethrography revealed the urachal remnant. The vesicourachal diverticulum was surgically removed without complications.

• Journal of Veterinary Clinics
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• v.30 no.6
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• pp.496-498
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• 2013

The aim of this study is to report the observed elevation of plasma N-terminal pro-B-type natriuretic peptide (NT proBNP) concentration in a Korean Jindo Dog infected with Dirofilaria immitis. Evaluation of the animal included physical examination, thoracic radiography, ELISA kit ($PetCheck^{(R)}$, IDEXX Laboratories, USA) test and plasma NT-proBNP evaluation. The infected animal's NT-proBNP concentration was compared with those of 5 normal dogs of the same age, sex, and breed; the affected Korean Jindo dog had increased plasma NT-proBNP. To the best our knowledge, this is the first report of NT-proBNP elevation in a Korean Jindo dog with dirofilariasis.

• Journal of Life Science
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• v.15 no.3 s.70
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• pp.439-446
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• 2005

Ferritin is known to be the principle iron-storage protein in a wide variety of rganisms. The electro­phoretic mobility and immunological cross-reactivity of dog splenic ferritin were compared with those of horse, bovine, and pig splenic ferritin after isolation using heat treatment, salting out, column chromatography, and ultrafiltration. These isolation methods allowed the recovery of $\~84{\mu}g$ of the ferritin per g of spleen. The iron content in the dog ferritin was $22.7\%$, which appeared to be higher than those in the other mammalian ferritins tested. The electrophoretic mobility of the dog ferritin under nondenaturing conditions was similar to its bovine counterpart, whereas it was more identical to pig and horse ferritins on an SDS-polyacrylamide gel. The molecular weight of the dog ferritin subunit was 19.5 kDa on an SDS-polyacrylarnide gel, and the subunit was unable to bind with iron. The polyclonal anti-dog ferritin raised in rats was able to cross-react with the pig, bovine, and horse ferritins, upon Ouchterlony double immunodiffusiion. A Western blot analysis also revealed that the anti-dog ferritin, which specifically bound with the dog ferritin subunit, could also recognize the horse, bovine, and pig ferritin subunits and the maximum cross-reactivity was exhibited with the pig ferritin subunit, indicating that the dog ferritin is immunochemically more similar to the pig ferritin than its other mammalian counterparts. Accordingly, these results elucidate the biochemical and immunochemical characteristics of dog ferritin that might have a potential to be applied as an oral iron supplement to treat iron deficiency anemia.

• Journal of Veterinary Clinics
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• v.26 no.3
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• pp.238-245
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• 2009

This study was performed to develop ethogram of the Jindo dog's temperament categories under various conditions. A set of 12 behavioral tests were developed to investigate temperament categories expressed by the dogs. Fourty-three adult Jindo dogs(24 males, 19 females) from three different farms located in Jindo island were tested in 12 different behavioral tests. All test procedures and dog's behaviors responded to the tests were recorded using two digital video cameras and one digital still camera. A single observer reviewed all of the videotapes focused on dog's vocalization, movement, head, ears, eyes, mouth, and tail-positions. After all of the behavioral variables expressed throughout the testing period were described in detail, an ethogram of four temperament categories of 'sociability', 'aggression', 'fearfulness', and 'submission' revealed by 12 behavioral tests was developed.

• Korean Journal of Veterinary Service
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• v.21 no.1
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• pp.79-85
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• 1998

This study was carried out to identify the infection rate of common internal parasites according to the age and the incidence of single or mixed parasitic infections from outside rearing dog in Kyungbuk province. Fifty-one dogs in 4 dog rearing farms were examined, and fece samples of dog's were freshly collected from farm ground and rectum swabs. The results obtained from this study were summarized as follows ; 1. Out of 51 dogs examined, 9 dogs were infected with some helminths, and mean infection rate was 17.6%. 2. The frequently encountered helminths were Ancylostoma caninum and Trichuris vulpis (32.3%), Toxascaris leonina(16.7%), Dipylidium caninum(8.3%) and Isospora sp(8.3%), in order. Specially the prevalence of Toxascaris leonina was relatively high in this study than other reports, and its significance was discussed. 3. The infection rate in younger dogs was higher than that of older dogs, especially that of the dogs under 6 months old was 31.3%, 6 months to 1 year old dogs was 0.8%, and over 1 year old dogs was 18.2%, respectively. 4. Single infection rates with Ancylostoma cantnum, Trichuris vulpis, Toxascaris leonina, Dipylidium caninum and Isospora sp were 11.8%. But double infection rates with the Ancylostoma caninun plus Trichuris vulpis and Toxascars leonina was 5.8%.

• Korean Journal of Veterinary Research
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• v.32 no.3
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• pp.403-406
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• 1992

The study was attempted to scrutinize the normal osmotic fragility of erythrocytes in domestic poultry such as chicken, quail and duck, making a comparison with that in domestic mammalia such as dog and pig. Osmotic fragility of erythrocytes was determined on blood samples from 10 healthy adult animals in each species. Optical initial hemolysis of erythrocytes occurred at $0.395{\pm}0.03%$ NaCl for chicken, $0.410{\pm}0.03%$ for duck, $0.440{\pm}0.02%$ for quail, $0.470{\pm}0.05%$ for dog and $0.560{\pm}0.03%$ for pig. Optical complete hemolysis of erythrocytes occurred at $0.270{\pm}0.02%$ NaCl for chicken, $0.305{\pm}0.03%$ for duck, $0.360{\pm}0.02%$ for quail, $0.370{\pm}0.03%$ for dog and $0.455{\pm}0.03%$ for pig. In other words, erythrocytes of poultry have stronger resistance to osmotic lysis than those of mammalia, showing the strongest resistance in chicken among the tested poultry.

• Korean Journal of Veterinary Research
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• v.48 no.1
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• pp.125-130
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• 2008

Mesenteric torsion was diagnosed in a 2-year-old, spayed female Miniature Schnauzer. The patient was presented with acute depression, vomiting, lethargy and hematochezia. On physical examination, severe dehydration, tachycardia, tachypnea, weak femoral pulse, delayed capillary refill time and pale mucous membrane were found and the dog was in shock. Radiography and ultrasonography revealed intestines distended with gas, ascites and the "C" shaped distended intestine. Medical treatments including fluid therapy, analgesics, antibiotics and lidocaine for reducing reperfusion injury were applied. And then, the mesenteric torsion was definitively diagnosed through exploratory laparotomy and intestinal resection and anastomosis were performed. The dog made an uneventful recovery and was free of clinical sign one week after surgery. Mesenteric torsion is an unusual and life-threatening disease in dogs. It has usually been described in the middle and large breed dogs, especially German Shepherds. However, the mesenteric torsion should be included in the differential diagnostic lists for acute abdomen even in small breed dog. The mortality rate of mesenteric torsion can be reduced through prompt diagnosis, proper preventive therapy for shock and reperfusion injury and emergency surgery.