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http://dx.doi.org/10.5333/KGFS.2016.36.2.98

Evaluation of the Milk Productivity and Nutrient Balance of Forage Sources for Organic Dairy Farms in Korea  

Na, Y.J. (Animal Science and Technology, Konkuk University)
Shin, K.M. (Animal Science and Technology, Konkuk University)
Rim, J.S. (Animal Science and Technology, Konkuk University)
Bang, J.W. (Faculty of Environment and Life Sciences, Seoul Women's University)
Lee, S.R. (Animal Science and Technology, Konkuk University)
Publication Information
Journal of The Korean Society of Grassland and Forage Science / v.36, no.2, 2016 , pp. 98-103 More about this Journal
Abstract
This study was conducted to evaluate the milk productivity and nutrient balance in organic dairy farms located at Gochang-gun of Korea with different feed sources. The total number of organic dairy farms was 12 in 2012, 13 in 2013, and 14 in 2014. The numbers of farms and dairy herds were increased each year. The average milk yields in 2012, 2013, and 2014 were 25.5, 24.6, and 24.4 kg/d, respectively. The average milk fat contents in 2012, 2013, and 2014 were 3.5%, 3.6%, and 3.7%, respectively. The average milk protein contents in 2012, 2013, and 2014 were 3.3%, 3.4%, and 3.4% in 2012, 2013, and 2014, respectively. Although the average milk yield of organic dairy farms was 9 kg/cows/d less than the average milk yield of other dairy farms in Korea, milk fat and protein contents of organic dairy farms were higher than those of other dairy farms. Alfalfa hay, oat hay, corn silage, rye grass silage, Sudan grass silage, rice straw, and barley silage were commonly used as forage sources in organic dairy farms. The average silage intake (15.6 kg/cow/d) of organic dairy farms in 2013 was higher (P < 0.05), while the average hay intake (5.1 kg/cow/d) in 2014 was higher (P < 0.05) than that of other feed intake. Net energy for lactation ($NE_L$) and metabolizable protein (MP) were calculated in accordance with NRC (2001). Net energy for lactation intake was higher (P < 0.05) while MP intake was lower (P < 0.05) than NRC recommendation values in 2013 and 2014. These results indicate that domestic organic dairy farms should use feed considering energy and protein balance recommended by NRC.
Keywords
Organic; Forage sources; Dairy farm; Milk productivity; Nutrient balance;
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1 AOAC. International, and Cunniff. P. 1995. Official methods of analysis of AOAC International. AOAC International, Arlington, VA.
2 Dado, R.G. and Allen, M.S. 1995. Intake limitations, feeding behavior, and rumen function of cows challenged with rumen fill from dietary fiber or inert bulk. Journal of Dairy Science. 78: 118-133.   DOI
3 Hamilton, C., Hansson, I., Ekman, T., Emanuelson, U. and Forslund, K. 2002. Health of cows, calves and young stock on 26 organic dairy herds in Sweden. The veterinary record, 150(16):503-508.   DOI
4 Keum, J.S. 2006. Organic milk production and consumption Prospects in Korea. Journal of Korean Dairy Technology Science 24(2): 47-54.
5 Ki, K.S., Kim, H.J., Park, D.H., Kim, S.M., Lee, T.I., Choi, H.J., Park, S.H., Kwon, S.B., Lee, E.G. and Lee, S.Y. 2013. A survey on feeding management in domestic dairy farms. Korean Journal of Organic Agriculture. 21(3):391-401   DOI
6 Korea Animal Improvement Association. 2015. 2014 Korea Animal Improvement Report. p111-112.
7 Korea Statistical Information Service. 2016. Livestock Survey Report. Available from: http://kosis.kr/statisticsList/statisticsList_01List.jsp?vwcd=MT_ZTITLE&parentId=F. Accessed April 4, 2016.
8 Licitra, G., Hernandez, T.M. and Van Soest, P.J. 1996. Standardization of procedures for nitrogen fractionation of ruminant feeds. Animal Feed Science and Technology. 57: 347-358.   DOI
9 National Agricultural Products Quality Management Service. 2016a. Organic Processed Food Certification Information System. Available from: http://www.enviagro.go.kr/portal/info/info_certifiok. do#nohref. Accessed April 4, 2016.
10 National Agricultural Products Quality Management Service. 2016b. Organic Processed Food Certification Criteria.
11 NRC 2001. Nutrient Requirements of Dairy Cattle: Seventh revised edition.
12 Rural Development Administration. 2008. Commercialization Techniques for Organic Livestock Production. p21-80.
13 SAS. 2014. Statistical Analysis System Version 9.2. SAS Institute Inc., Cary, NC, USA.
14 Van Soest, P. Robertson. J.B. and Lewis. B.A. 1991. Methods for dietary fiber, neutral detergent fiber, and nonstarch polysaccharides in relation to animal nutrition. Journal of Dairy Science. 74:3583-3597.   DOI
15 William D.M. 2007. A Comparison of Conventional and Organic Milk Production System in the U.S. Selected Paper prepared for presentation at the American Agricultural Economics Association Annual Meeting, Portland, Oregon, July 29-August 1.