高产奶牛繁殖性能下降与能量负平衡(NEB)有关。
Lower reproductive performance of high producing dairy cows is associated with negative energy balance (NEB).
作者简述了奶牛能量负平衡产生的原因、对奶牛的危害及其防治措施。
The reasons of negative energy balance appeared on dairy cows, disserves and prevention measures were introduced in this article.
在奶牛日粮中添加过瘤胃脂肪是解决高产奶牛能量负平衡问题重要而经济可行的途径。
Adding rumen bypass fat into the diets for high producing dairy cows is an important, economic and feasible way to resolve the problem of energy negative balance of high producing dairy cows.
而干奶期低能饲喂奶牛，干物质摄入增加(达6%)，产奶量增加(达6%)，产后失重减少，能量负平衡减轻且持续时间缩短。
It increased the loss in body weight and aggravated the negative energy balance, while the cow fed with low energy diet during the dry period increased 6% of the DMI and 6% of MY.
你要么有一个正能量平衡，要么是负能量平衡，或是一个完美平衡。
You'll have either a positive energy balance, a negative energy balance or a perfect balance.
负能量平衡：如果你得到一个负数，你会发现减肥所需的能量是不平衡的。
Negative energy balance: If you end up with a negative number, you've found the energy imbalance necessary for weight loss.
虽说今天的宇宙还在膨胀，但霍金教授说：“正的物质能量刚好和负的引力能量相互平衡，这样就使得总能量为零。”
Although today's universe is still expanding, Professor Hawking holds that the plus matter energy balances the minus gravitation energy, thus the total energy is zero.
虽说今天的宇宙还在膨胀，但霍金教授说：“正的物质能量刚好和负的引力能量相互平衡，这样就使得总能量为零。”
Although today's universe is still expanding, Professor Hawking holds that the plus matter energy balances the minus gravitation energy, thus the total energy is zero.
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