Seasonal and Regional Effects on Milk Composition of Dairy Cows in South Korea |
Nam, Ki-Taeg
(School of Animal life and Environmental Sciences, Hankyong National University)
Kim, Ki-Hyun (School of Animal life and Environmental Sciences, Hankyong National University) Nam, In-Sik (Korea Livestock Products HACCP Accreditation Service) Abanto, Oliver D. (School of Animal life and Environmental Sciences, Hankyong National University) Hwang, Seong-Gu (School of Animal life and Environmental Sciences, Hankyong National University) |
1 | Kadzere, C. T., Murphy, M. R., Shianikove, N. and Maltz, E. 2002. Heat stress in lactating cows: a review. Livest. Prod. Sci. 77:59-91. DOI ScienceOn |
2 | McDowell, R. E., Hooven, N. W. and Camoens, J. K. 1976. Effects of climate on performance of Holsteins in first lactation. J. Dairy Sci. 59:965-973. DOI |
3 | National Research Council. 1989. Nutrient requirements of dairy cattle. In: 6th revised edition update. National Academy Press, Washington, DC |
4 | Nishibu, J. 1998. Current status of MUN utilization in Japan, Tokachi federation agricultural cooperative. Japan. |
5 | Roenfeldt. S. 1998. You can't afford to ignore heat stress. Dairy Manage. 35: 6-12. |
6 | SAS User's Guide: Statistics, 1996. Version 6.12 Edition. SAS Inst., Inc., Cary., NC. |
7 | Sharma, A. K., Rodriguez, L. A., Mekonnen, G., Wilcox, C. J., Bachman, K. C. and Collier, R. J. 1983. Climatological and genetic effects on milk composition and yield. J. Dairy Sci. 66:119-126. DOI |
8 | Thatcher, W. W. 1974. Effects of season, climate and temperature on reproduction and lactation. J. Dairy Sci. 57: 360-368. DOI |
9 | The Government of the Republic of Korea. 2003. Second National Communication of the Republic of Korea under the United Nations Framework Convention on Climate Change. Available from URL: http//unfccc.int/resource/docs/natc/kornc02.pdf. |
10 | Wittwer, F. G., Gallardo, P., Reyes, J. and Opitz, R. 1999. Bulk milk urea concentrations and their relationship with cow fertility in grazing dairy herds in southern Chile. Preventive Veterinary Medicine. 38:159-168. DOI ScienceOn |
11 | Collier, R. J., Beede, D. K., Thatcher, W. W., Israel, L. A. and Wilcox, C. J. 1982. Influences of environmental and its modification on dairy animal health and production. J. Dairy Sci. 65: 2213-2227. DOI |
12 | Coppock, C. E. 1985. Feeding energy to dairy cattle. In: Coppock, C. E. (ed.), Large dairy management. University presses Florida, Gainesville, pp. 265-268. |
13 | Fuquay, J. W. 1981. Heat stress as it affects animal production. J. Anim. Sci. 32:164-174. |
14 | Green, M. J., Bradley, A. J., Newton, H. and Browne, W. J. 2006. Seasonal variation of bulk milk somatic cell counts in UK dairy herds: Investigation of summer rise. Prev. Vet. Med. 74:293-308. DOI ScienceOn |
15 | Harmon, R. J. 1994. Physiology of mastitis and factors affecting somatic cell counts. J. Dairy. Sci. 77:2103-2112. DOI |
16 | Henno, M., Ots, M., Joudu, I., Kaart, T. and Kart, O. 2008. Factors affecting the freezing point stability of milk from individual cows. Int. Dairy J. 18:210-215. DOI ScienceOn |
17 | Johnson, H. D. 1976. World climate and milk production. Biometeorology. 6:171-175. |
18 | Aganga, A. H., Umna, N. N., Oyendipe, E. O., Okoh, P. N. and Aduku, A. O. 1990. Response to water deprivation by yankasa ewes under different physiological states. Small Rumin. Res. 3:109-115. DOI ScienceOn |
19 | Allore, H. G., Oltenacu, P. A. and Erb, H. N. 1997. Effects of season, hard size, and geographic region on the composition and quality of milk in the Northeast. J. Dairy Sci. 80:3040-3049. DOI ScienceOn |
20 | Araki, C. T., Nakamura., R. M., Kam, L. W. G. and Clarke, N. 1984. Effect of lactation on diurnal temperature patterns dairy cattle in hot environments. J. Dairy. Sci. 67:1725-1760. DOI |
21 | Bandaranayaka1, D. D. and Holmes, C. W. 1976. Changes in the composition of milk and rumen contents in cows exposed to a high ambient temperature with controlled feeding. Trop. Anim. Hlth. Prod. 8:38-46 DOI |
22 | Berman, A., Folman, Y. M., Kaim, M., Maman, Z., Herz, D., Wolfenson, A. and Garber, Y. 1985. Upper critical temperatures and forced ventilation effects for high-yielding dairy cows in a tropical climate. J. Dairy Sci. 68:488-495. |
23 | Cobble, J. W. and Herman, H. A. 1951. The influence of environmental temperatures on the composition of milk of dairy cow. Missouri Agr. Expt. Sta., Research Bull. 485. |