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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2018.1
- 수록면
- 515 - 532 (18page)
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초록· 키워드
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Light is an essential and powerful element to animals. A light-emitting diode (LED) is most efficient in terms of economic benefits. The aim of the present study was to evaluate the effects of LED lighting time on milk production, milk composition, and the immune response of Holstein cows. Forty lactating cows were assigned to four experimental groups: control; natural daylight, treatment; am3-6, pm6-12 and pm6-am6. We found that there was no significant effect on the decrease ratio in milk production among the groups. Milk urea nitrogen (MUN) was significantly decreased in pm6-am6 and pm6-12 than the control. With regard to the hemolytic biochemical analysis, GLU was significantly increased and CRE, T-BIL were significantly decreased in the pm6-12 than the control. IGF-1 levels were significantly increased in pm6-12 compared to other groups. Besides, cortisol was significantly lowered in the pm6-12 than the control, while prolactin, IgA and IgG were not significant among the groups. In addition, catalase and glutathione peroxidase were also significantly increased in pm6-12 than the control. However, antioxidant enzyme activity and superoxide dismutase were not significant among the experimental groups. Therefore, it was concluded that LED lighting time had some impact on blood parameters and immune responses in dairy cows without any changes in milk production.
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등록된 정보가 없습니다.
참고문헌 (54)
참고문헌 신청
AOAC / 1990 / Official Methods of Analysis / Association of Official Analytical Chemists
Auchtung, T. / 2004 / Effects of photoperiod during the dry period on cellular immune function of dairy cows / Journal of dairy science 87(11):3683~3689
Blatchford, R. / 2009 / The effect of light intensity on the behavior, eye and leg health, and immune function of broiler chickens / Poultry science 88(1):20~28
Blum, J. / 1983 / Thyroid hormones, blood plasma metabolites and haematological parameters in relationship to milk yield in dairy cows / Animal Science 36(1):93~104
Bobadilla-Mendez, M. / 2016 / Effect of different light sources on reproductive anatomy and physiology of Japanese quail (Coturnix coturnix japonica) / Animal reproduction science 168:50~56
Auchtung, T. / 2004 / Effects of photoperiod during the dry period on cellular immune function of dairy cows / Journal of dairy science 87(11):3683~3689
Blatchford, R. / 2009 / The effect of light intensity on the behavior, eye and leg health, and immune function of broiler chickens / Poultry science 88(1):20~28
Blum, J. / 1983 / Thyroid hormones, blood plasma metabolites and haematological parameters in relationship to milk yield in dairy cows / Animal Science 36(1):93~104
Bobadilla-Mendez, M. / 2016 / Effect of different light sources on reproductive anatomy and physiology of Japanese quail (Coturnix coturnix japonica) / Animal reproduction science 168:50~56
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