From: Role of nutraceuticals during the transition period of dairy cows: a review
Nutraceutical | Treatment | Period | Main outcome | Reference |
---|---|---|---|---|
EO mix (thymol, eugenol, vanillin, guiacol, limonene | 1 g/cow/d | From −21 d to 42 d relative to calving | No effect | [137] |
2 g/cow/d | 28 d | DMI decrease. Small effects on digestion, ruminal fermentation, milk production and composition. Ruminal pH increase | [138] | |
1.2 g/cow/d | From −4 weeks before calving to 15 weeks after | DMI decrease but milk yield was maintained | [133] | |
Herbal choline | 17 g/cow/d (0.071% of TMR) | 1 year | Improve milk yield and fertility in first lactation cows. Reduction of abortions and mastitis and respiratory problems. Hypocalcemia disorders increase | [139] |
Tea saponin | 20, 30, 40 g/cow/d | 8 weeks treatment | Intermediate dose (20, 30 g/d) had no effect on feed intake. High dose (40 g/d) decreased DMI and milk yield) | [140] |
EO mix (menthol, eugenol, anethol) | 1.2 g/cow/d | 20 d | Improved feed efficiency and calcium homeostasis at rumen level | [141] |