| Budget Amount *help |
¥16,900,000 (Direct Cost: ¥13,000,000、Indirect Cost: ¥3,900,000)
Fiscal Year 2019: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2018: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2017: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2016: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
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| Outline of Final Research Achievements |
This study aimed to evaluate the milk production and liver functions of multiparous high producing dairy cows fed two diets of differing energy levels (110 or 90% of ME requirements) in a one-phase dry period of 6 weeks. The prepartum dry matter intake was greater in the high than in the low ME group but the low ME group surpassed the high ME one in the DMI from the 1st to 3rd week postpartum. Milk yield did not differ between the high and the low ME diets from the 1st to the 8th week postpartum. The feed efficiency ratio tended to be lower in the low ME group from the 1st to 3rd week postpartum with no change thereafter. In liver function, PigK gene expression was increased after parturition in liver of low ME group. And Acaa1, Acaa2 and Sod1 gene expression before parturition were higher in low ME compared with high ME group. In conclusion, prepartum limited energy feeding in a one-phase dry period for 6 weeks could improve the postpartum DMI and energy balance.
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