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Kim, Ui Hyung;Chung, Ki Yong;Lee, Seung Hwan;Ryu, Il Sun;Kang, Hee Seol
- Journal of Embryo Transfer
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- v.29 no.1
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- pp.7-12
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- 2014
This work was conducted to study the improvement of reproduction rate from the breeding data collected from four farms from January 2007 to October 2010. The average numbers of service per conception were 1) A farm $1.7{\pm}0.1$ times, 2) B farm $1.5{\pm}0.1$ times, 3) C farm $1.5{\pm}0.1$ times, 4) D farm $1.4{\pm}0.1$ times. The average days from calving to conception was $77.4{\pm}4.8$ days in A farm, $150.8{\pm}11.2$ days in B farm, $90.4{\pm}4.5$ days in C farm, and $71.4{\pm}2.5$ days in D farm. Number of artificial insemination (AI) service per conception was higher at the 30 days before first AI ($2.1{\pm}0.2$ times) than at the 31 days after first AI, and the days from calving to conception were shorter at the 90 days before first AI than at the 91 days after first AI. After timed AI (TAI) treatment, the pregnancy rate was 60.3% for the 58 cows with reproductive disorder. In order to improvement of reproduction rates, the farms has to improve the accuracy of estrus detection, pregnancy diagnosis, check-up for reproductive health, and control of day for first AI periods after calving. The result suggests that farmers need the careful management and reproductive examination of farm animals to improve of reproductive efficiency.
https://doi.org/10.12750/JET.2014.29.1.7 인용 PDF KSCI

Lee, Gi-Yun;Lee, Joo-Yeon;Back, Seung-Hee;Hwang, In-Jin;Lee, Kyung-Soon;Kim, Young-Su;Kim, Byoung-Hoon;Kim, Hyun-Soo;Kang, Soo-Cheol;Cho, Jea-Jin;Park, Min-Seo;Suk, Hee-Jin;Nam, In-Sik
- Journal of Animal Science and Technology
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- v.53 no.1
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- pp.67-74
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- 2011
The aim of this study was to understand the management level of pathogenic bacteria in HACCP system implemented animal farms. Microbial samples were collected from manure, floor, compost depot, manure on belt, low milk tank, dust in laying house and egg collector in HACCP system implemented Korean beef cattle, dairy cattle, swine, and laying Hens farms. O157, O111 and O26 strains of E. coli were not detected in HACCP system implemented Korean beef cattle farm. The detection rate of E. coli from manure and floor in HACCP system implemented cattle farms (Korean beef cattle and dairy farm) was lower than those of non-HACCP system implemented cattle farm. Salmonella spp. was detected in HACCP system implemented cattle farms (Korean beef cattle and dairy farm). Compared with pervious studies, lower detection rate of Salmonella spp. at floor and compost depot in HACCP system implemented swine and commercial layer farms were indicated. In conclusion, implementation of HACCP system in animal farms would enhance the management level of biological hazard compare to normal animal farms.
https://doi.org/10.5187/JAST.2011.53.1.67 인용 PDF KSCI