저메탄사료 급여가 젖소의 생산능력 및 우유 품질에 미치는 효과

Abstract

The purpose of this study is to scientifically evaluate the impact of feeding domestically produced methane reduction feed on milk production in dairy cows in Korea. The study analyzes the effects of methane reduction feed on the productivity and milk quality of dairy cows. The experimental farm, located in Jeju City, houses a total of 100 cows, with a milking herd size ranging from 50 to 55 cows. The daily milk production is approximately 1,500 kg (about 54 tons annually), and the farm utilizes a TMR (Total Mixed Ration) feeding system in an open barn with a herringbone milking parlor. For the experiment, methane reduction feed from Company A, currently available in the market, was used. The feed was administered at a rate of 9.8 kg per cow in TMR twice a day, in the morning and evening. Productivity-related analyses of the cows were based on monthly examination records from a cooperative dairy improvement center, covering all test records (milk yield, milk protein, fat content, somatic cell count, MUN, non-fat solid, etc.) from January 2021 to October 2023. The analysis of productivity-related items before and after feeding low methane feed showed a decreasing trend in days open, days open period, the number of services to conception, and days to first service after calving over the years. The analysis of milk productivity and quality changes before and after feeding low methane feed revealed no significant changes in yield, fat content, somatic cell count, 305-day yield, 305-day milk protein, and mature equivalent yield. Fat content increased during the winter when yield decreased, and it was lowest in the summer. The percentage of milk protein was 3.3% in spring and summer, reaching the highest value of 3.5% in winter. Analysis of non-fat solids, somatic cell count, and MUN showed no significant differences regardless of low methane feed. The analysis of production-related items by calving year showed no significant difference in 2023, where low methane feed was administered. In conclusion, feeding methane reduction feed did not significantly impact the productivity and milk quality of dairy cows, showing similar performance to regular feed. 참고문헌 Ahn, B. S., Choi, Y. L., Jeong, H. Y., Kim, J. S., & Chung, Y. H. (1998). Variation of milk components during the performance test period in holstein dairy cow. KOREAN JOURNAL OF ANIMAL SCIENCES, 40, 589-592. Camer-Pesci, B., Laird, D. W., van Keulen, M., Vadiveloo, A., Chalmers, M., & Moheimani, N. R. (2023). Opportunities of Asparagopsis sp. cultivation to reduce methanogenesis in ruminants: A critical review. Algal Research, 103308 Eason, C. T., & Fennessy, P. (2023). Methane reduction, health and regulatory considerations regarding Asparagopsis and bromoform for ruminants. New Zealand Journal of Agricultural Research, 1-30. George, A., Shen, B., Craven, M., Wang, Y., Kang, D., Wu, C., & Tu, X. (2021). A Review of Non-Thermal Plasma Technology: A novel solution for CO2 conversion and utilization. Renewable and Sustainable Energy Reviews, 135, 109702. Hill, J., McSweeney, C., Wright, A. D. G., Bishop-Hurley, G., & Kalantar-Zadeh, K. (2016). Measuring methane production from ruminants. Trends in Biotechnology, 34(1), 26-35. Hristov, A. N., Oh, J., Giallongo, F., Frederick, T., Weeks, H., Zimmerman, P.