• Asian-Australasian Journal of Animal Sciences
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• 제8권1호
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• pp.23-27
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• 1995

A selection experiment with Romney Marsh sheep was used to evaluate direct responses to selection. Two flocks were maintained; a) the selection line formed in 1979 by the Romney Group Breeders to select for high prolificacy, defined as the number of live lambs born per ewe joined per year and b) a control line, established in 1982, where flock replacements were chosen at random. Predicted responses per year of birth female group and per year respectively were 0.033 and 0.027 live lambs. The rate of predicted response per year was within the theoretical expected range from 0.01 to 0.03 of the mean. The rates of realized response in prolificacy per year of birth female group and per year respectively were 0.026 and 0.021. These estimates of realized responses represented between 0.01 and 0.02 of the control line mean per year.

• 대한수의학회지
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• 제51권1호
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• pp.55-58
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• 2011

Two 4-day-old Thoroughbred foals with acute clinical signs of depression, elevated pulse and respiratory rates, anemia, and jaundice were referred to the equine hospital of Korea Racing Authority. The foals were seemingly normal at birth, but showed clinical signs such as abnormal behavior, jaundice and anemia suddenly after ingestion of the mare's colostrum, followed by death at 4 days after birth. According to the results of the hematology, serum chemistry analysis, jaundice foal agglutination test, and blood groups test, the foals were diagnosed as neonatal isoerythrolysis (NI) caused by the mare's antibodies. These results suggested that the pregnant mares have a potential for NI.

• 부모자녀건강학회지
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• 제13권1호
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• pp.8-16
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• 2010

Purpose: This study aimed to explore university students' views on a childbirth to gaining a deeper understanding of their individual thinking and the meaning that it hold for them. Methods: A Phenomenological approach was used. Subjects were 10 university students who go to university in D city. The method proposed by Colaizzi (1978) was used to guide the process of data analysis. Results: The formulated meaning were classified into nine themes. And then the nine themes were finally grouped into five theme clusters as follow: 'a smooth life', 'the law of nature', 'living a real life', 'fear and burden'. Conclusion: University students' views on a childbirth reflect with the run of the lower birth rate and the aging population in Korean society. Therefore, nursing interventions should be directed toward supporting their positive thinking and changing their negative thinking on childbirth.

• 가족자원경영과 정책
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• 제11권1호
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• pp.53-63
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• 2007

This study analyzes the contents of low birthrate measures by the government and their effectiveness. The discussion on the measures being promoted by the government is conducted by considering the analysis on the cause of low birthrates, introduction of overseas policies and government policy propositions, etc. The evaluation on effectiveness is conducted by considering the recognition of the policies by women who are the subject of childbirth and preceding studies. Low birth rates are not the problem of an individual anymore, but a task that the whole of society has to resolve. The comprehensive measures should be made including the elements that influence birth rate such as reducing the cost of raising a child, creating a favorable environment in society and worksite, and improving the nurturing environment, etc.

• Clinical and Experimental Pediatrics
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• 제65권1호
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• pp.1-9
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• 2022

With advancements in neonatal care and nutrition, the postnatal growth of preterm infants has improved; however, it remains an issue. Accurate assessments of growth using a standardized reference are needed to interpret the intrauterine and postnatal growth patterns of preterm infants. Growth in the earlier periods of life can contribute to later outcomes, and the refinement of postnatal growth failure is needed to optimize outcomes. Catch-up growth occurs mainly before discharge and until 24 months of age, and very low birth weight infants in Korea achieve retarded growth later in life. Knowing an infant's perinatal history, reducing morbidity rates during admission, and performing regular monitoring after discharge are required. Preterm infants with a lower birth weight or who were small for gestational age are at increased risk of poor neurodevelopmental outcomes. Furthermore, poor postnatal growth is predictive of adverse neurodevelopmental outcomes. Careful monitoring and early intervention will contribute to better development outcomes and national public health improvements.

• Clinical and Experimental Reproductive Medicine
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• 제51권1호
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• pp.85-90
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• 2024

Objective: The purpose of this study was to compare fresh and frozen-thawed euploid blastocyst transfer protocols following preimplantation genetic screening (PGS) in cases of advanced maternal age. Methods: A total of 330 patients were examined retrospectively. PGS was performed on the embryos of 146 patients for whom fresh transfers were chosen. In contrast, frozen-thawed euploid single embryo transfer (ET) was selected after PGS for 184 patients, and their embryos were vitrified. The percentage of euploid embryos and rates of implantation, pregnancy, and pregnancy continuity, as well as clinical and biochemical abortion rates, were compared. Results: The numbers of retrieved oocytes, metaphase II oocytes, and fertilized ova were greater in the frozen-thawed group. The percentages of euploid embryos were comparable between the fresh and frozen-thawed groups (32% vs. 34.8%, respectively). The rates of implantation (46.6%vs. 62.5%), pregnancy (50% vs. 66.8%), ongoing pregnancy (38.4% vs. 53.8%), and live birth percentage (37.0% vs. 53.8%) were significantly higher in the frozen-thawed group. However, no significant differences were found in the clinical and biochemical abortion rates. Conclusion: The use of frozen-thawed single euploid ET is associated with increased implantation and pregnancy rates compared to fresh single euploid ET with PGS.

• 한국수정란이식학회지
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• 제21권4호
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• pp.299-306
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• 2006

본 연구는 수정란이식의 현장 적용 측면을 중심으로, 한우 체외 수정란의 발생 단계, 일자 및 등급이 젖소 대리모에 이식 후 임신과 유산, 분만과 관련된 임신기간, 생시체중, 난산 및 쌍자율을 조사하였다. 또한 단자 및 쌍자 분만에 따른 임신기간, 생시체중, 성비 및 폐사율을 분석하였다. 발생 단계에 따른 임신율은 배반포 단계(64.4%), 유산율은 부화 배반포(HB) 단계(21.4%)가 유의하게 높았다(p<0.05). 발생 일령에 따른 임신율은 7일령 배가 49.0%로서 8일 및 9일령의 36.4 및 15.4%보다 유의하게 높았으나(p<0.05), 유산율은 0$\sim$10.7%로 비슷한 경향이었다. 등급에 따른 임신율은 41.4$\sim$42.5%, 유산율은 9.3$\sim$16.5%로서 차이가 없었다. 발생 단계에 따른 임신기간, 송아지의 체중 및 난산율은 비슷한 경향이었으나, 쌍자율은 HB 단계가 44%로서 배반포 단계의 15.8%보다 유의하게 높았다(p<0.05). 발생 일령에 따른 임신 기간, 난산율 및 쌍자율은 차이가 없었으나, 송아지의 체중은 9일령의 것이 평균 35.5 kg으로서 7일령 및 8일령의 평균 25.2 및 26.2kg보다 유의하게 무거웠다(p<0.05). 등급에 따른 임신 기간은 1등 및 2등급이 평균 278.5 및 276.1일로서 3등급의 평균 273.7일에 비하여 유의하게 길었으나(p<0.05), 체중, 난산율 및 쌍자율은 차이가 없었다. 분만한 송아지의 개체 수에 따른 임신기간은 단자가 평균 278.5일로서 쌍자의 평균 272.5일보다 유의하게 길었다(p<0.05). 생시 체중도 단자가 평균 29.6 kg으로서 쌍자의 평균 22.3kg에 비하여 유의하게 무거웠으나(p<0.05), 성비와 폐사율은 유사한 경향이었다.

• 여성건강간호학회지
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• 제8권3호
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• pp.424-434
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• 2002

Background & purpose Since the 1970's the rate of breast-feeding has decreased significantly. The Korean National Institute of Health reported that the rate of breastfeeding was 68.9% in 1982 and 14.1% in 1997. There are many influencing factors including: the lack of education and information on breast feeding, lack of faith in breast feeding, increment of the rate of working, lack of encouragement by supporters in difficult situations, and nurses' low level of knowledge about breast feeding. Such a lack of knowledge and support of breast-feeding at home by family members create another dilemma to the problem of breast-feeding. If problems arise and family members are unable to provide assistance due to the deficiency of knowledge, mothers show a tendency to abandon breast-feeding. The purpose of this research is to find out the rate of breast-feeding practice by time sequence of 1 week, 6 weeks and 12 weeks after birth and influencing factors on breast-feeding practice centered on the postpartal women who were 3discharged from one hospital, which is located in Seoul and provides simple breast-feeding education and continuous postnatal telephone consultation. Methodology The subjects of this research were 54 women who gave birth in a hospital located in Seoul from 1 March 2000 to 31 April 2000. After birth the subjects were educated individually about breast-feeding and telephone consultations were conducted. On the 1st week, 6th week, and 12th week, the subjects were surveyed about their breast-feeding practice rates and methods by telephone. Results 1) Complete breast-feeding rate: Within one week after birth, the subjects showed 64.2% complete breast-feeding rate. Within 6 weeks, 39.6%, and 12 weeks, 34.1%. 2) Partial breast-feeding rate: Within one week after birth, the subjects showed 32.1% partial breast-feeding rate. Within 6 weeks, 39.6%, and 12 weeks 15.1%. 3) Complete bottle-feeding rate Within one week after birth, the subjects showed 1.9% complete bottle-feeding rate. Within 6 weeks of giving birth 15.1%, and 12 weeks 17.0%. These results show that individual education about breast-feeding and continuous postnatal telephone consultation influenced on the practice of breast-feeding. On considering the reality of the hospital situation in which nurses could not operate education program due to the work-load, it is necessary to find out selectively those mothers who are unable to breast feed and provide education individually and continuous support by telephone follow up. Futhermore, the active role of lactation nurse specialist and their efficient management of breast-feeding for the successful practice is required.

• 한국조사연구학회지:조사연구
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• 제10권3호
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• pp.59-83
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• 2009

이 연구의 목적은 기혼 여성의 결혼 후 첫 취업 중단 발생 경향을 자녀 출산 및 가족친화제도에 따른 영향에 주목하여 분석함으로써, 출산과 가족친화제도가 일 가족 양립에 미치는 영향을 파악하는 것이다. 이를 알아보기 위하여 한국노동패널에서 최근 5년 이내(2002~2006) 결혼한 20~30대 취업 여성 194명을 추출하였으며, 가족친화제도 문항이 포함되기 시작한 제4차(2001)부터 제 9차(2006)까지의 데이터를 활용하여 생존분석하였다. 분석 결과 기혼 취업 여성이 첫 경력 단절을 경험하기까지 걸리는 시간은 평균 29.60개월로, 결혼 후 2년 반 이내에 절반 가까이 직장 생활을 그만두었다. 취업 여성의 결혼 후 취업 중단 요인에는 자녀 출산이 가장 유의한 변수로 나타났으며, 근로소득이 증가할수록, 근로시간이 감소할수록, 직장 내 가족친화제도를 더 많이 이용할수록 취업상태를 지속하는 경향을 보였다. 기혼 취업 여성의 취업 중단은 특히 첫 자녀 출산을 2~3개월 앞둔 시기에 주로 나타났는데, 출산휴가 및 육아휴직과 같은 가족친화제도를 이용할 수 있는 경우 이러한 취업 중단이 발생할 가능성은 유의하게 낮아지는 것으로 나타났다.

• Advances in pediatric surgery
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• 제14권1호
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• pp.37-47
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• 2008

Recently, the survival rates of extremely low-birth-weight (ELBW) infants have improved with the development of neonatal intensive care. However, these infants were susceptible to intestinal perforation due to prematurity, fluid restriction, and injection of indomethacin, etc. Because of the risks of transportation, anesthesia and surgery itself, peritoneal drainage has been compared with laparotomy. Through our experience, we investigate the usefulness of peritoneal drainage retrospectively. From 1997 to 2007, six ELBW (M:F=5:1) underwent primary peritoneal drainage for intestinal perforation. Their median birth weight was 685g (405~870) and gestational age was $25^{+1}$ weeks ($24^{+3}{\sim}27^{+0}$). We noticed the intestinal perforation at median 10.5 days (8~18) after birth, and placed Penrose drain or Jackson-Pratt drain through right lower quadrant incision under local anesthesia. The cause of intestinal perforation was necrotizing enterocolitis in one patient, but that of the others was not clear. Three patients who showed normal platelet count and stable vital signs recovered uneventfully. Two patients (birth weight less than 500g) who showed unstable vital signs and low platelet count (12,000 / $mm^3$ to 30,000 / $mm^3$)expired despite aggressive resuscitation. One patient required laparotomy due to persistent intestinal obstruction after drain removal and survived. Our experience shows that peritoneal drainage was an acceptable treatment for ELBW infants and the prognosis was related to vital sign and platelet count at the time of intestinal perforation, and birth weight.