Surgical treatment was performed in 507 heads out of 1078 dairly cows which were diagnosed as abomasal displacement. Out of 507 heads. bar suture was performed in 280 heads. Twelve heads out of 280 heads(4.9%) recurred. Incorrective suture of the reticulum or pylorus instead of abomasum occurred in 3 cows. The cows in which abdominal wall was sutured but the suture was not inserted into the abomasum were 4 heads. The cows in which bar was broken are 4 heads. A cow suffered peritonitis after bar suture. Bar suture technique is thought to be a good method as a first choice for the correction of abomasal displacement.

Present study was undertaken in order to evaluate the cadmium contents of various feedstuffs produced in Chonbuk area. Fifty-five samples were collected from 5 regions. All of the samples were dry-ashed and analyzed for cadmium content using atomic absorption spectrophotometer. The results obtained were summarized as followed : 1. The cadmium content in $\mu\textrm{g}$/g of agriculture by-products were measured with the following mean values and ranges : soybean pod 3.15${\pm}$0.51(2.40∼3.81), rice bran 2.87${\pm}$0.23(2.50∼3.09), rice straw 1.66${\pm}$0.85(1.08∼3.14), rice hull 0.86${\pm}$0.45(0.41∼1.35). 2. The cadmium content in $\mu\textrm{g}$/g of pasture plants were measured with the following mean values and ranges : kudzu 5.65${\pm}$1.00(4.87∼7.29), sagebrush 4.86${\pm}$1.24(2.89∼6.24), clove, 4.28${\pm}$0.75(2.99∼4.86), lespedeza 3.99${\pm}$1.21(2.38∼4.94), Korean lawn grass 2.24${\pm}$1.04(1.33∼3.44), reed 1.99${\pm}$0.95(0.88∼2.91), cornstalk 1.61${\pm}$0.99(0.38∼3.12). 3. The regional mean values for all kinds of samples were Okgu-gun 3.19${\pm}$2.09$\mu\textrm{g}$/g, Mooju-gun 3.15${\pm}$1.73$\mu\textrm{g}$/g, Wanju-gun 3.05${\pm}$1.76$\mu\textrm{g}$/g, Namwon-gun 2.85${\pm}$1.70$\mu\textrm{g}$/g, Jeongup-gun 2.85${\pm}$1.25$\mu\textrm{g}$/g.

Present study was undertaken in order to evaluate the lead contents of various feedstuffs produced in Chonbuk area. Fifty-five samples were collected from 5 regions. All of the samples were dry-ashed and analyzed for lead content using atomic absorption spectrophotometer. The results obtained were summarized as followed : 1. The lead content in $\mu\textrm{g}$/g of agriculture by-products were measured with the following mean values and ranges : soybean pod 7.01${\pm}$2.49(4.71∼10.66), rice bran 4.56${\pm}$0.90(3.17∼5.65), rice straw 3.89${\pm}$2.01(1.29∼6.33), rice hull 1.92${\pm}$1.77(0∼3.63). 2. The lead content in $\mu\textrm{g}$/g of pasture plants were measured with the following mean values and ranges : kudzu 20.29${\pm}$4.75(14.84∼25.34), clover 13.92${\pm}$2.68(10.17∼16.44), lespedeza 10.91${\pm}$9.00 (3.35∼23.54), sagebrush 10.75${\pm}$3.28(5.14∼13.18), Korean lawn grass 5.05${\pm}$2.29(2.57∼7.79), cornstalk 3.91${\pm}$2.55(0.50∼7.22), reed 2.92${\pm}$1.88(0.50∼5.73). 3. Seventeen samples (30.9%) out of 55 samples showed lead content of more than 10$\mu\textrm{g}$/g which are said to be the upper limit value for all animals. 4. The regional mean v짓ues for 리1 kinds of samples were Wanju-gun 10.02${\pm}$8.55$\mu\textrm{g}$/g, Mooju-gun 8.16${\pm}$4.91$\mu\textrm{g}$/g, Namwon-gun 7.09${\pm}$4.59$\mu\textrm{g}$/g, Okgu-gun 7.06${\pm}$7.11$\mu\textrm{g}$/g, Jeongup-gun 6.35${\pm}$6.50$\mu\textrm{g}$/g.

To investigate the effect of chlorhexidine gluconate and povidone iodine on wound healing, their antimicrobial activity and their effects on wound contraction in rabbits were studied. Staphyococcus aureus (1${\times}$10$\^$7/) was inoculated on the full thickness skin defects (2${\times}$2cm) on the back. Antiseptics were applied on the defects 2 hours after Inoculation. The defects were swabbed for bacterial culture 24 and 48 hours after the application of antiseptics. Percentage of wound contraction, based on wound area measured on the day of surgery was calculated for each wound on days 1,7 and 14. The 0.5% chlorhexidine gluconate solution had more effective antimicrobial activity against Staphyococcus aureus in wounds than 0.05% chlorhexidine gluconate solution (p<0.05), and povidone iodine solution and saline (p<0.01). Percentages of wound contraction were not significantly different among different dilutions of the antiseptics and saline. Present study indicated that the antimicrobial activity of chlorhexidine gluconate in wound was superior to that of povidone iodine.

Since successive operations under the acupuncture analgesia have been reported In China 1971, veterinary acupuncture was brought to the attention over the world and then its research and clinical use have markedly developed. Veterinary acupuncture and moxibustion was originated in China and Korea, but the research activities on them were not very significantly advanced. In this study, status of veterinarians on veterinary acupuncture and moxibustion, acupunctures which has been practiced by civil acupuncturist, therapeutic effects of acupuncture for the animal diseases in the field, and effects of electric acupuncture on the lumen motility in ruminants, etc. were Investigated. One-fifty of veterinarians of private clinics in Korea was interested in acupuncture and moxibustion in veterinary medicine. A lot of veterinarians required the scientific, systemic technique and knowledge or acupuncture. Civil acupuncturists who have been practiced acupuncture and moxibustion were 20 persons, and most of them were very old. They used chiefly three edged needles which were made by themselves and utilized old traditional technique in which the acupoints were stimulated and bled. Treatment with acupuncture for the digestive, muscular locomotive and febrile diseases was very effective. Until nowadays, the research on veterinary acupuncture in Korea has not much progressed. However, the Korean Societh of Veterinary Acupuncture and Moxibustion was organized in 1990. Valuable development for acupuncture through the society are expected. Electroacupuncture regional analgesia on the combinations of Yao-Pang 1, 2 and 4 acupoints was very effective for abdominal operations in cattle. But a lot of experiences and studies on the acupuncture anesthesia were required for clinical use in the future. Therapeutic effects of about 80% were obtained from electroacupuncture on the combinations of Tian Ping-Bai Hui-Shi Zhang, and Guan Yuan Yu acupoints in cattle with luminal atony and tympany In the field. Electroacupuncture on the combination of Tian Ping-Bai Hui-Qi Men, and Tian Ping-Bai Bui-Wei Gen for the treatment of downer cow was not so effective. The effects of stimulation and bleeding from acupoint by three edged needle was excellent for febrile diseases. The luminal contractile movement was accentuated by electroacupuncture on Tian Ping-Bai Hui-Shi Zhang combination and Guan Yuan Yu acupoint. It was concluded that veterinary acupuncture and moxibustion should be utilized for veterinary practice, and the advanced scientific research and clinical experiences must be followed.

The present study was carried out to compare xylazine(2.2mg/kg, IV), xylazine/acepromazine(1.1mg/kg. IV : 0.2mg/kg, IV) and xylazine/diazepam(1.1mg/kg, IV :1.0mg/kg, IV) anesthesia, to determine useful method out of three kinds of anesthesia and tr evaluate this selected method at hypovolemic state. In xylazine, kylazine/acepromazine and kylazine/diazepam anesthesia, the heart rate was increases after administration of atropine until 10minutes after administration of anesthetics and then decreased gradually in all types of anesthesia. The respiratory rate was decreased after administration of anesthetics in all types of anesthesia. The body temperature was rarely changed in xyiazine/acepromazine and xylazine/diazepam anesthesia, but decreased continuously in xylazine anesthesia. In xylazine and kylazine/acepromazine anesthesia the pedal and corneal reflex were not disappeared completely, but reactions to pin pricking were disappeared. In xylazine/diazepam anesthesia their reflex and reactions were disappeared together. The time from head-up to standing was shortest(32.00min) in kylazine/diazepam anesthesia in comparision with xylazine and kylazine/acepromazine anesthesia. In xylazine/diazepam anesthesia, the heart rates in hypovolemic dogs were decreased soon after administration of anesthetics but recovered immediately. The changes in systolic and diastolic blood pressure in hypovolemic dogs revealed similar trends to their changes in normal dogs after administration of anesthetics. It is considered that rylazine/diazepam anesthesia is one of the useful anesthetic methods in healthy dogs and also in hypovolemic dogs.

Four retention sutures were used to correct the vaginal prolapse in a dairy cow. The methods used were two modified Caslick operation of vulva using absorbable(catgut chromic) and nonabsorbable(supramid) materials, and a modified mattress closure and a modified Buhner method of vulva using trocar and wire insulated by vinyl. The lasting periods for retention of bovine vaginal prolapse by the suture methods described above, were 12 days, 49 days, 39 days and 62 days respectively.

This trial is concerned with practical application of a M. C. that was injected Into the horse's muscle in order to make a effective identification by computer compatible. Following results were obtained through the study of histopathologic changes, migration of M. C. and possible problems about practical application. 1. Muscle romboideus cervicalis(site 'A') was thought to be the best Injection site of M. C. in the horse. 2. There were no the exact interface between the M. C. and surrounding tissue. It seemed to be why the implanted transponder was located in the muscle fascia. 3. No evidence of migration in the tissues was found through the radiographs taken after implantation 4. There were no clinical disorder and interference with racing performance. 5. ID 100 from Trovan, Co. had some advantages comparing with TX 1400 L from Destron, Co. These are, for instance, the long readout distance and the easy application of computer in the field practive.

The present study was carried out to examine the effect of oviduct epithelium and its conditioned medium on e development of early bovine embryos in vitro. Oocytes obtained from ovarian follicles of slaughtered cows were cultured in TCM199 with 10% fetal calf serum for 22-24hrs and then fertillzed in vitro using frozen-thawed semen treated with BO-caffein, BO-BSA(20mM heparin added). Oviduct epithelium was collected in each stage of the estrus cycle and conditioned medium was the medium in which oviduct epithelium in early luteal stage was cultured. In vitro fertilized bovine embryos of 1～2 cell were co-cultured with oviduct epithelium from different estrus cycles, cultured in conditioned medium, and cultured in rabbit oviduct. The cleavage rates of in vitro fertilized early bovine embryos co-cultured with oviduct epithelial cell from early luteal, luteal and follicular phase of estrus cycle(67.2～70.8%) and cultured in conditioned medium(56.7%) were significantly(p<0.05) higher than that of the control(44.2%) The rate of development to morula or blastocyst stage in oviduct epithelial cell co-culture(15.3～32.5%) from three phase of estrus cycles and conditioned medium(14.5%) were significantly(p<0.05) higher than that of the control(5.2%). The oviduct epithelial cell from early luteal phase gave a significantly( p<0.05) higher rate of development to morula or blastocyst stage than both luteal and follicular phase. The results of in vivo culture in rabbit oviduct of early bovine embryos were 52.1% for the cleavage rate and 26.7% for the rate of development to morula or blastocyst stage.

Safety of recombinant porcine somatotropin administration on pig was studied using 32 Landrace x Yorkshire crossbred pigs. The starting body weight ranged from 55.5kg to 65.3kg. Eight pigs were allotted to each low dose group of sustained releasing rPST(SL), high dose group of sustained releasing rPST(SH), daily injection group of rPST(DI), and control group(C). Pigs in SL group and SH group were injected subcutaneously twice in 3 week-interval with 1000$\mu\textrm{g}$ and 2000$\mu\textrm{g}$ of sustained releasing rPST per kg body weight, respectively. Pigs in DI group were injected intramuscularly with 100$\mu\textrm{g}$ of rPST everyday for 6 weeks. Blood was collected from anterior vena cava just before the first treatment, and at four weeks and six weeks of experiment. Hematological parameters and blood chemical parameters indicating liver function, kidney function, electrolyte metabolism, mineral metabolism and lipid metabolism were determined. Necropsy and urinalysis were performed after final blood collection. The results were summarized as follows, and it is concluded that rPST administration does not affect pig health negatively. 1. rPST administration did not affect kidney function as manisfested by BUN, creatinine and urinalysis. 2. rPST administration did not affect liver function as manisfested by total protein, albumin, serum AST activity serum ALT activity serum ALP activity, serum LDH activity, serum GGT activity and serum SDH activity. 3. rPST administration did not affect skeletal muscle, cardiac muscle and brain as manifasted by serum AST activity and serum LDH activity. 4. rPST administration increased blood glucose level within normal range. 5. rPST administration did not affect lipid metabolism as manisfested by triglyceride, cholesterol, and phospholipid concentrati on. 6. rPst administration dia not affect mineral metabolism as manisfested by calcium, phosphorus, magnesium and iron concentration. 7. rPST administration did not affect electrolyte metabolism as manisfested by Na, K, chloride concentration. 8. rPST administration did not affect erythrocyte count, leukocyte count, thrombocyte count, and plasma fibrinogen level.