They may be administered via feed or water, by injection, or via timed-release boluses.
可能通过饲料或水、注射或通过定时释放的丸药施用抗生素。
There were no statistically significant differences in the frequency of PCA demands and delivered boluses or among perioperative VAS scores.
结果显示，在PCA需要次数、 PCA 给药量及围术期VAS 评分方面没有显著的统计学差异。
The results showed that the released amount of trace elements in the boluses could meet dairy cow's requirement and significantly improve milk yield and quality.
结果表明，缓释丸释放的微量元素能够提供产奶牛的需要，对产奶量和乳品质的提高有显著的影响。
The results showed that the released amount of trace elements in the boluses could meet dairy cow's requirement and significantly improve milk yield and quality.
结果表明，缓释丸释放的微量元素能够提供产奶牛的需要，对产奶量和乳品质的提高有显著的影响。
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