• Asian-Australasian Journal of Animal Sciences
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• 제18권10호
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• pp.1475-1478
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• 2005

Statistical analysis was conducted on sow stillbirth traits of three genotypes with 2,400 litters including the Erhualian, Large White and the $F_1$ cross of these two breeds. Number of stillborn piglets per litter in the Erhualian, Large White and the $F_1$ averaged 0.85, 0.31 and 0.70, and percentage born alive averaged 95.0%, 97.0% and 95.5%, respectively. Erhualian sows with a greater litter size also had a higher stillbirth rate. Results of analysis of variance indicated that genotype, parity, farrowing year${\times}$farrowing season interaction and total number born had highly significant effects on both number of stillborn piglets per litter and percentage born alive in sows (p<0.0001). Farrowing year had no significant effect on number of stillborn piglets per litter (p>0.05), and highly significant effect on percentage born alive (p<0.01). Farrowing season had highly significant effects on both number of stillborn piglets per litter and percentage born alive (p<0.01). From parity one to parity ten, least squares means for number of stillborn piglets per litter progressively increased with increasing parity and least squares means for percentage born alive progressively decreased with increasing parity. Sows that farrowed in winter had the highest number of stillborn piglets per litter and the lowest percentage born alive, sows that farrowed in autumn had the lowest number of stillborn piglets per litter and the highest percentage born alive. With increasing total number born, least squares means for number of stillborn piglets per litter markedly increased and least squares means for percentage born alive markedly decreased. Results from analysis of paternal half sibs indicated that the heritabilities for number of stillborn piglets per litter and percentage born alive were 0.110 and 0.124, and the genetic, phenotypic and environmental correlations between them were -0.989, -0.951 and -0.948, respectively. These results indicated that number of stillborn piglets per litter and percentage born alive were traits with the similar genetic background.

• Animal Bioscience
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• 제34권11호
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• pp.1749-1756
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• 2021

Objective: Microminipig (MMP) is a miniature pig with an extra small body size for experimental use. In the present study, the occurrence of stillbirths and their genetic association with swine leukocyte antigen (SLA) class II haplotypes were evaluated in a population of MMPs. Methods: The occurrences of stillbirth and genetic association with SLA class II haplotypes using 483 stillborn and 2,246 live piglets, and their parents were compared among the three groups of newborn piglet litters; an all stillborn (AS) group consisting of only stillborn piglet litters, a partial stillborn (PS) group consisting of stillborn and live piglet litters, and an all alive (AA) group consisting of only live piglet litters. Results: The incidence of stillborn piglets was 483/2,729 (17.7%). Distributions of litter sizes, numbers of stillborn piglets in a litter, parities, and gestation periods were distinct among the three groups. The frequencies of low resolution haplotype (Lr)-0.7 or Lr-0.23 were higher in the AS group than in the PS or AA groups. In sires, the frequency of Lr-0.7 associated with the AS group was significantly higher in the AS group than with the AA group. In dams, the frequency of Lr-0.23 was significantly higher in the AS group than in the PS or AA groups, whereas the frequency of Lr-0.7 was not significantly different. Conclusion: The incidence of stillborn piglets in MMPs appears to be higher than those in other pig breeds. Several traits related with stillbirths such as the number of stillborn piglets and parities of the AS group were different from those of the PS and AA groups. Specific SLA class II haplotypes were associated significantly with a high incidence of stillbirths and could be used as genetic markers to adopt breeding strategies to lower the rate of stillbirth in MMPs.

• 여성건강간호학회지
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• 제23권3호
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• pp.166-180
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• 2017

Purpose: The purpose of the study was to have an in-depth understanding of delivery room nurses' experiences of caring for stillborn babies and their parents. Methods: After obtaining approval from the Institutional Review Board, data were collected from March 1 to August 30, 2016. A total of six nurses participated in the study. Semi-structured in-depth interviews were conducted and the data subsequently analyzed. Results: Using thematic analysis, six themes were defined and refined: Emotional distress as a result of encountering stillborn babies; Caring for the deceased baby; Concerns for the mother's pain; Consideration for the father; Conflicts between accepting and dismissing parents' requests; and Strong mindset for the stillborn babies and their parents. Conclusion: The results showed that the nurses' experiences of caring for stillborn babies and their parents might be a difficult and lonely process. However, it could also be a process of attaining maturity by finding meaning and value in one's work. It would be helpful for the delivery room nurses to share examples of effective communication, train through simulation, and learn useful strategies that each nurse can use.

• 한국수의병리학회:학술대회논문집
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• 한국수의병리학회 2003년도 추계학술대회초록집
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• pp.31-31
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• 2003

Porcine circovirus (PCV) is the smallest virus that replicates autonomously in mammalian cells. PCV2 is recongized as the casual agent of postweaning multisystemic wasting syndrome (PMWS).[1] Although the role of PCV2 in reproductive failure requires further clarification, there have been several reports of PCV2-associated reproductive failure. Consistent clinical signs of affected farms include elevated abortion, stillbirths and fetal mummification. The objective of this study was to determine the prevalence of PCV2 in aborted fetuses and stillborn piglets. Second objective was to determine the distribution of PCV2 DNA and antigen in aborted fetuses and stillborn piglets by in situ hybridisation and immunohistochemistry. (omitted)

• 한국동물위생학회지
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• 제34권2호
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• pp.117-123
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• 2011

This experiment was conducted to investigate the presence of recognized abortifacient viruses from aborted fetuses and stillborn piglets in cases of reproductive failure in sows by PCR. A total of 219 samples of aborted fetuses or stillborn piglets, submitted to the School of Veterinary Medicine of Kangwon National University between 2006 and 2009 May, were collected from 5 provinces in Korea. Abortifacient virus infections were detected in 82 (37.4%) out of 219 aborted fetuses or stillborn piglets as well as on 39 (40.2%) out of 97 pig farms. The major viral infections were porcine circovirus type 2 (PCV2), porcine reproductive and respiratory syndrome virus (PRRSV) and Aujesky's disease virus (ADV) for which 46 (21%), 19 (8.6%) and 16 (7.3%) were positive, respectively, with 9 fetuses had complicated infection of PCV2+PRRSV or ADV or both. And 8 (3.6%) for SIV, 3 (1.3%) for PPV and 1 (0.4%) for JEV were positive as minor viral infection. The results suggest that PCV2, PRRSV, ADV is apparently the most important viral infectious agents associated with fetal infection leading to abortion or stillbirth in Korea. SIV, PPV and JEV might have a minor impact on reproductive disease.

• Journal of Korean Neurosurgical Society
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• 제40권6호
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• pp.445-449
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• 2006

Objective : The accurate anatomy of the facial nerve is essential for successful surgical outcome. The purpose of the present study is to know such information on the facial nerve from a series of specimens. Methods : This study is based on cadaveric dissection of 41 Korean fetus and stillborn infant and describes anatomical variations of the peripheral branches of the facial nerve that pose a importance in a number of neruosurgical procedure. Results : The branching patterns were classified into six types according to modified Davis classification : the frequencies of occurrence were : type I, 4.9%; type II, 24.4%; type III, 34.1%; type IV, 19.5%; type V, 12.2%; and type VI, 4.9%. Types II, III and IV together accounted for almost 80% of the specimens. Conclusion : Compared to previous adult and western stillborn fetus cadaveric studies, there was no significant difference in the percentage of the types between the subjects in the present study, similar pattern and anatomic distribution.

• 한국수의병리학회:학술대회논문집
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• 한국수의병리학회 2002년도 추계학술대회초록집
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• pp.134-134
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• 2002

A stillborn bovine male fetus with abdominal distention, arthrogryposis and atresia ani was presented for diagnostic evaluation. At necropsy, this fetus had a large amount of ascites, urachal obstruction and marked bladder distention. The ventral surface of the bladder had ruptured and attached to the abdominal wall by fibrinous adhesions. There was bilateral hydronephrosis with moderate pelvic dilatation and cortical attenuation. The rectum was filled with meconium but the anus was imperforate. The right forelimb was contracted. The cause(s) of these abnormalities could not be determined; however, we believe that developmental abnormalities during embryogenesis may be the result of chromosomal abnormalities. This report is the first to report congenital urachal obstruction in this species.

• Journal of Animal Science and Technology
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• 제55권5호
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• pp.389-398
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• 2013

본 연구는 폐쇄종돈군을 유지하면서 장기간 선발육종을 실시한 Landrace 및 Yorkshire 모계 종돈집단에서 임신기간, 총산자수, 이유후초종부일 및 사산두수에 대한 유전적 변이성을 제시함으로써 이들 형질들에 대한 선발지표에 참고자료를 제시하고자 실시하였다. 분석에 이용된 자료는 상기의 형질들에 대하여 사전 이상치를 제외한 후, Landrace 품종에서 1,910두의 모돈으로부터 수집된 7,616복의 기록 및 Yorkshire 품종 2283두의 모돈으로부터 수집된 총 10,454복의 기록을 이용하였다. 분석형질들에 대한 유전변이를 추정하기 위하여 상기의 4개 형질을 동시에 고려한 혼합모형을 설정하였으며, 특히 사산두수에 대하여는 정규성에 크게 위배되기 때문에 범주형 자료로 가정하여 다형질 선형-임계형 반복동물개체모형을 설정하여 분석하였다. 분석방법으로서는 Bayesian 추론의 일종인 Gibbs Sampling (GS) 방법에 의하여 모수의 사후분포 함수로부터 모수에 대한 GS을 50,000회 실시하고 burn-in을 제외한 후 모수의 사후분포에 대한 통계량을 제시하였다. 유전변이를 추정한 결과, 임신기간에 대한 유전력은 0.21~0.35로 추정되었고, 이유후초종부일에서는 0.16~0.23, 총산자수는 0.14~0.16 및 사산두수에 있어서는 0.09~0.10으로 추정되었다. 임신기간에 대한 유전상관 추정치는 총산자수 및 사산두수에서 부의 상관을 갖는 것으로 추정되었고 총산자수와 사산두수와는 정의 상관을 갖는 것으로 추정되었다. 총산자수와 이유후초발정일 간의 유전상관은 낮은 부의 상관을 갖는 것으로 추정되었으며 임신기간과 이유후 초종부일 간에는 유전적 상관관계가 매우 미약한 것으로 분석되었다. 따라서 총산자수를 개량하고자 할 때, 사산두수를 고려하여 선발지표를 설정함이 타당할 것으로 판단되었다.

• Journal of Ginseng Research
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• 제22권2호
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• pp.122-125
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• 1998

Adequate available soil moisture level is considered to be one the most important components in growing high yields of good quality ginseng. Excessive soil moisture may promote stillborn fungal pathogens and cause serious diseases in ginseng fields. This study showed that soil moisture levels for optimum growth and health of ginseng varied with soil texture. Fifty- percent available moisture for sandy loam and 75% for silty loam are the best moisture levels for good growth and higher yield.

• 대한수의학회지
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• 제31권4호
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• pp.479-484
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• 1991

Encephalomyocarditis(EMC) virus was isolated from the mummified and stillborn pigs at a swine farm in Chonnam Province, experienced with EMC infection over the period Oct.~Dec. of 1989. In addition some cultural, serological properties of the isolates and experimental infections in the piglets were studied. The results obtained were as follows; 1. Two EMC virus strains with HA titers and CPE similar to EMC-ATCC were established in a baby hamster kidney (BHK)-21 cell line by inoculating homogenates of brain and heart of the 19 mummified or stillborn pigs and designated $K_3$ and $K_{11}$. 2. At the second BHK-21 cell line passage of the initial isolates CPE appeared after incubation for 16~18 hours, while at the fourth and fifth passage the highest titer of HA was recorded, titer of HA using rat and guinea pig erythrocytes. 3. One pig inoculated with the isolate $K_3$ showed dyspnea as clinical signs and died at the 10 days after inoculation at necropsy white necrotic foci were observed from the dead animal heart. 4. Although all the rest surviving pigs showed increases in antibody titer and body temperature of $40^{\circ}C$ above for the initial 2~4 days followed by the return to normal, there were no gross lesions when the animals were sacrificed at the 2 weeks after inoculation.