• 한국동물생명공학회지
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• 제38권4호
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• pp.215-224
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• 2023

Background: Reproductive management practices play crucial roles to maximize the reproductive performance of cows, and thus contribute to farm profitability. We aimed to assess the reproductive management of cows currently practiced in the dairy farms in an urban farming system. Methods: A total of 62 dairy farms were randomly selected considering all size of farms such as small (1-5 cattle), medium (6-20 cattle) and large farms (> 20 cattle) from selected areas of Dhaka city in Bangladesh. The reproductive management-related parameters viz. estrus detection, breeding method, pregnancy diagnosis, dry cow and parturition management, vaccination and treatment of reproductive problems etc. were obtained in a pre-defined questionnaire during the farm visit. Results: The visual observation method was only used (100.0%; 62/62) for estrus detection irrespective of size of the farms; while farmers observed cows for estrus 4-5 times a day, but only for 20-60 seconds each time. Regardless of farm size, 89.0% (55/62) farms used artificial insemination (AI) for breeding the cows. Intriguingly, all farms (100.0%) routinely checked the cows for pregnancy at 35-40 days post-breeding using rectal palpation technique by registered veterinarian. However, only 6.5% (4/62) farms practiced dry cow management. Notably, all farms (100.0%) provided nutritional supplements (Vit D, Ca and P) during late gestation. However, proper hygiene and cleanliness during parturition was not practiced in 77.4% (48/62) farms; even though 96.7% (60/62) farms treated cows by registered veterinarian for parturition-related problems. Conclusions: While farmers used AI service for breeding and timely check their cows for pregnancy; however, they need to increase observation time (30 minutes/ observation, twice in a day: early morning and early night) for estrus detection, consider dry cow management and ensure hygienic parturition for maximizing production.

• Asian-Australasian Journal of Animal Sciences
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• 제18권7호
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• pp.949-956
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• 2005

The weekly ultrasound scanner (US) observations of reproductive organs in a commercial dairy herd with the popular stanchion style management were conducted for over 26 months. Based on reproductive records, the following were evaluated: 1) the effect of postpartum period commencement of US monitoring on herd reproductive efficacy, and 2) the effectiveness of a US monitoring-based diagnosis and subsequent treatments of reproductive disorders on postpartum reproductive efficiency. The reproductive parameters of cows, which were subjected to US monitoring between Days 30-40 (Day 0 = day of parturition), Days 41-50, Days 51-60, and above Day 61, were compared. The reproductive parameters of cows diagnosed as having reproductive disorders (RD) with US monitoring before or after the first artificial insemination (AI) were also compared. It was found that the day of commencement of US monitoring in cows diagnosed with and without RD significantly affected the period towards the first AI and the open period. In particular, cystic follicles and anoestrus detected either before or after the first AI significantly affected herd reproductive efficiency. The implementation of US monitoring improved reproductive efficiency by reducing the open period and increasing the number of milking cows in the herd. The results of this field trial indicate that the postpartum reproductive management of dairy cows with the use of the US monitoring system is one strategy to improve reproductive efficiency, especially in a high-yielding dairy herd reared stanchion management style.

• 월간산업보건
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• 통권349호
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• pp.51-70
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• 2017

• 한국임상수의학회지
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• 제24권2호
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• pp.142-149
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• 2007

The purpose of this study was to develop a computerized software program to help for reproductive management in dairy cows. The developed software program in the study is compatible with a window 95/98 or XP system. Data in the system were recorded, stored, and processed from two sources: 1) Data downloaded monthly from the database of the Korean Dairy Herd Improvement Association (milk yields, milk somatic cell counts, milk fat, protein, lactose and urea nitrogen content). 2) Data recorded by the farmer or veterinarians by the time (body condition score, heats, inseminations, veterinary diagnosis and treatments). These data indices after processing by computerized dairy management system were presented by numerical or graphical display. The presented data were obtained from three dairy farms with more than 50 milking cows. The presented reports of this program using milk fat, protein, urea nitrogen, and somatic cell counts enabled the dairy producer and veterinarians to monitor the protein-energy balance and feeding management practice, and for distribution of diseases (mastitis, metabolic and reproductive disorder) in individual cows. The presented analytical reports of this program also included herd average of reproductive indices such as day to first insemination, days open, and inseminations per conception. This software program will assist in analysis, interpretation and demonstrate the results of reproductive trials conducted in dairy herds.

• 여성건강간호학회지
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• 제10권3호
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• pp.226-234
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• 2004

Purpose: This study was to examine health status, reproductive health problems and the degree of prenatal management in working women. Method: The subjects were 902 married working women among 2,000 women selected by cluster sampling. The work area was classified to product factory, school, office, etc. After an Informed consent was obtained, participants were asked to fill out a self-administered questionnaire. The instruments included a questionnaire, parity check list, menstrual problems and gynecologic problem check list. Result: Many women have experienced menstrual cycle change during the past year. There was a significant difference in general health, menstrual regularity, reproductive health and prenatal management by occupation type. 40.6 percent of the subjects have gynecological problems such as menstrual cycle change, perineal inflammation, irregular vaginal bleeding, amenorrhea, ovarian/uterine disease, infertility, or abortion. Prenatal care was received in only 28.5% of the total subjects. In addition, 16.3% answered they had experienced low birth weight babies. Conclusion: We can conclude that working woman have changes in menstruation cycle and in reproductive health status. Therefore, we suggest that some occupational characteristics may affect subject's reproductive health, these should be clear and avoided as much as possible.

• 셀메드
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• 제3권2호
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• pp.17.1-17.10
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• 2013

Reproductive dysfunction is a major health concern amongst the inhabitants of Tana River County. An ethno botanical study was conducted in Garsen, Itsowe and Ngao sub divisions of Tana River County to document the utilization of medicinal plants for the management of female reproductive ailments. The target population was practicing herbalists from Pokomo, Ormo and Giryama communities in the study area. Structured questionnaires and focussed group discussions were used to collect data. Forty eight plant species distributed in 40 genera and 29 families were documented as being important for the management of pregnancy related complications, menstrual disorders, infertility, fibroids and as contraceptives. The species most frequently cited by the herbalists were fourteen. Fifty two percent of the plant species were probably being mentioned for the first time as being useful in reproductive health management. In conclusion, Tana River has a pool of TMPs with a wealth of indigenous knowledge that needs to be exploited. The plants used to treat dysmenorrhea for example may be important analgesic agents that need further investigation while those with anti-fertility properties may contain steroidal phyto chemical compounds. Such species therefore need further investigation to establish their efficacy and mechanism of action.

• 한국산업보건학회지
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• 제24권1호
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• pp.91-102
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• 2014

Objectives: This study was performed in order to devise a procedure for supplementing the Special Management Materials in the Occupational Safety and Health Act and recommend candidate materials. The results are expected to be used as fundamental data for classification and criteria necessary to manage Special Management Materials in workplaces. Also, they are expected to be used as a basis for selecting target materials to nominate as additional Special Management Material. Methods: We investigated the selection standards for candidates and review ranges of data sources to nominate Special Management Materials. The substances classified as GHS(Globally Harmonized System of classification and labeling of chemicals) category 1A(known to have carcinogenic potential and reproductive toxicity for humans) or 1B(presumed to have carcinogenic potential and reproductive toxicity for humans) carcinogens and reproductive toxicants among the Controlled Hazardous Substances of the Regulation on Occupational Safety and Health Standards and substances with OELs(Occupational Exposure Limits) were inspected as the candidates for Special Management Materials. Conclusions: A seven-step procedure for selecting candidates to designate as Special Management Materials was suggested, including the setting of target chemicals for evaluation, classification of CMR(Carcinogens, Mutagens or Reproductive toxicants) by GHS classification and criteria, suggestion and selection of the candidates, and more. This study recommends 58 chemicals as qualified candidates to supplement the Special Management Materials.

• Asian-Australasian Journal of Animal Sciences
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• 제12권6호
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• pp.956-965
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• 1999

Genetic selection and sophisticated management technology have produced modern sows which excel in litter size and milk production. Recent research has identified nutritional innovations which may enhance productivity of the high producing sow. Selected research in three areas which have the potential to enhance reproductive performance are summarized in this report. First, preliminary evidence indicates that organic chromium may enhance litter size and conception rate. Secondly, high producing sows, particularly primiparous sows, required higher protein/lysine in late gestation and or lactation to optimize weaning weight and subsequent litter size. Valine and isoleucine, but not leucine, have been shown to enhance milk production. Phased feeding programs with diet cost partitioned toward gilts and away form parity 3 to 8 sows have been suggested as a means of improving reproductive performance in young sows. Lastly, recent research with sufficient sow numbers to document the effect of dietary fiber on reproductive performance has shown that sows fed fiber farrowed and weaned more pigs.

• Clinical and Experimental Reproductive Medicine
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• 제34권2호
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• pp.107-115
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• 2007

목 적: ISO 9001:2000 품질경영시스템은 국제적인 인중 기준에 의해 제품 및 서비스의 품질을 적절하게 판정하고 이를 향상시키기 위해 시행되고 있다. 본 연구에서는 이러한 품질경영시스템을 보조생식술 센터에 성공적으로 도입하고 적용하는 과정에서 확인된 효용성에 대해 기술하고자 한다. 연구방법: 제일병원 아이소망센터는 2004년 1월부터 ISO 9001:2000 인증을 위한 활동을 시작하였으며, 고객만족도조사와 주기적인 내부심사와 사후심사를 실시하였다. 심사과정에서 확인된 부적합 사항에 대한 시정 및 예방 조치와 이에 따른 효과성을 검증하였으며, 고객불만사항에 대한 지속적인 관리와 개선을 위한 프로젝트를 진행하였다. 결 과: 본 센터는 초일류 불임센터로 성장하고 최적의 품질경영시스템을 확립하기 위한 품질방침을 설정하여, 2004년 6월에 한국품질재단 (Korean Foundation for Quality)으로부터 "체외수정 및 배아이식 시술에 관련된 연구"에 대하여 ISO 9001:2000 인증을 받았다. 이러한 품질방침을 실현하기 위해 품질경영시스템에 적합한 품질매뉴얼, 프로세스, 절차서, 지침서 등에 대한 문서화를 완료하였다. 삼 년 동안의 내부심사와 사후심사에서 각각 140건과 7건의 부적합이 확인되었으며, 이에 대한 시정조치를 실시하였다. 결 론: 본 센터에서는 ISO 품질경영시스템의 도입과 운영을 통해 고객만족도의 향상, 체계적인 문서화를 통해 업무의 투명화와 효율화가 가능하였다. 보조생식술 센터에서의 ISO 품질경영시스템은 보조생식술에 대한 국가적인 관리시스템을 효율적으로 운영하기 위한 기본적인 기관별 경영시스템으로서 활용이 가능할 것으로 생각된다.

• 수산해양기술연구
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• 제46권4호
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• pp.368-375
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• 2010

Maturation and spawning of the Blackthroat seaperch, Doderleinia berycoides were investigated based on the samples captured in Korean waters from January 2008 to December 2009. Gonadosomatic index began to increase in June, and reached maximum between July to September. After spawning it began to decrease from October. Reproductive season was estimated to July-September, with peak in August. Fecundity was proportional to the size of the female, with the clutch size varying from 115,500 eggs in the smallest female (TL〓28.2cm) to 652,000 eggs in the largest (TL〓33.5cm). Size at 50% sexual maturity ($TL_{50}$), determined from mature females, was 29.6cm. Annual reproductive cycles of this species could be divided into six successive stages; immature stage (October-May), nucleolus stage (June-July), yolk vesicle stage (July-August), vitellogenic stage (June-September), ripe and spent stage (August-October).