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송훈 ( Hoon Song ),조현웅 ( Hyunwoong Jo ),손정현 ( Jeonghyeon Son ),김법균 ( Beob Gyun Kim ) 한국축산학회 2023 축산기술과 산업 Vol.10 No.1
Gonadotropin products are available for inducing estrus of gilts. A concern is a potential negative effect of the estrus inducer on the farrowing performance. This study aimed to evaluate the effects of an estrus-inducing agent on gilt productivity at a commercial farm. A total of 60 gilts that had not shown estrus for more than 14 days were treated with an estrus inducer. Among these gilts, 51 exhibited estrus and underwent artificial insemination. Additionally, 64 gilts naturally went into estrus and were also artificially inseminated during the same period. The pregnancy rates for the natural estrus group and the estrus inducer treatment group were 93.7% and 92.2%, respectively, showing no difference. Furthermore, there were no significant differences observed in farrowing performance between the two groups, including total litter size (11.5 vs. 11.4), stillbirths (0.38 vs. 0.42), fostering piglets (11.1 vs. 11.1), and the number of weaned piglets (10.9 vs. 10.7). Wean-to-estrus interval also did not differ between the two groups. Taken together, we failed to find any detrimental effects of estrus inducers on the reproductive performance of gilts.
박건국(Konkuk Park),김중회(JungHoe Kim),손정현(JeongHyeon Son),이상정(SangJeong Lee) 한국추진공학회 2016 한국추진공학회 학술대회논문집 Vol.2016 No.5
본 논문은 엔진제어기 점검시스템의 개념과 필요성에 대하여 간략한 설명을 하고 있다. 점검시스템은 크게 FPGA,DSP,아날로그,이산신호 처리부로 구성된다. 주요 센서신호는 온도, 속도, 압력 , 유량, LVDT/RVDT등이 있다. FPGA를 적용한 시스템이 상용모듈을 사용한 신호처리 방법보다 효과적이다. 그리고 엔진제어기의 고장 식별 및 실시간 데이터 처리를 통한 동특성 확인 방법을 제시하였다. This paper introduces brief explanations about the engine controller test system"s concept and necessity. The test system’s is consist of FPGA, DSP, Analog and Discrete signal process part. The kind of sensor signal is temperature, rpm, pressure, flow, LVDT/RVDT and so on. Using FPGA system is more efficient than service module. and purpose to method of engine fault detected or dynamic characteristics vefiry through real time data processing.