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Effect of Short-distance Walking Activity on Milk Production and Metabolic Status of Lactating Dairy Cows KCI 등재
- 언어ENG
- URLhttps://db.koreascholar.com/Article/Detail/364816
pp.343-348
In this study, the effect of daily short-distance walking exercise on milk production and metabolic status of the lactating dairy cows was investigated. The experiment was conducted with 10 lactating dairy cows comprising 2 groups (5 dairy cows/group), which were walking activity and non-walking activity. The walking activity (WA) group lactating dairy cows walked outdoors for 1 km/d, and the non-walking activity (non-WA) lactating dairy cows were maintained within a cowshed from 18thApril to30th May. The activity volume of the neck was not significantly different between the groups, but the activity volume of the leg was higher in WA group compared with non-WA (p<0.05). The rectal temperature was higher in the WA group (38.6 ℃) compared with non-WA (38.2 ℃) (p<0.05). No significant differences in dietary NE intake, milk production and milk composition were found between the groups. The plasma cortisol concentration was higher in WA group (2.14 μg/dl) compared to non-WA (0.95 μg/dl) (p<0.05). However, plasma cortisol level of WA dairy cows was significantly decreased as compared with non-WA cows. On the contrary, the level of plasma melatonin was increased in WA cows than that of non-WA dairy cows. It may be interpreted as a change in physical fitness. From this study, we suggest that walking activity can be improved energy balance. Further investigation is needed to determine whether different combinations of distance, rate or doing in morning or afternoon will stimulate energy balance.
Ⅰ. INTRODUCTION
Ⅱ. MATERIALS AND METHODS
1. Animals and experimental design
2. Walking activity and rectal temperature measurement
3. Blood sampling
4. Milk sampling
5. Sample Analysis
6. Statistical Analysis
Ⅲ. RESULTS AND DISCUSSION
1. Rectal temperature and activity volume
2. Feed intake and energy balance
3. Milk production and composition
4. Metabolic status
Ⅳ. CONCLUSION
Ⅵ. REFERENCES
