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Spring Fever

机译：春季伤风

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For replacement heifers to be ready for breeding, nutrition is key in the months before they'll be bred. Kansas State's Twig Marston says for higher conception rates among heifers, the goal is to have them at 65% of their mature weight by the time breeding season begins. To calculate this target weight for replacement heifers in your herd, Marston offers these guidelines: Determine heifers' target weight by taking one of your herd's average cow's weight and multiplying it by 0.65. That's the target weight heifers should be at by breeding season. Take the heifer calf's weaning weight, the target weight and the number of days until the breeding season to calculate desired average daily gain. If possible, use ranch scales to spot check heifer progressin the months leading up to breeding season to determine if the heifer's weight gains are on track, says Marston. Another tip: During the winter feeding period, separate bred heifers from adult cows through calving to maintain body condition on heifers and help boost next year's first calf heifer rebreeding rates.
机译：为了使替代小母牛能够繁育，在繁殖前的几个月中，营养至关重要。堪萨斯州立大学的特威格·马斯顿（Twig Marston）表示，为了提高小母牛的受胎率，目标是到繁殖季节开始时使小母牛的体重达到其成熟体重的65％。要计算您的牛群中小母牛的目标体重，马斯顿提供了以下指导原则：通过将牛群的平均母牛体重之一乘以0.65来确定小母牛的目标体重。那是小母牛在繁殖季节应该达到的目标体重。以小母牛的断奶体重，目标体重和直到繁殖季节的天数来计算所需的平均日增重。马斯顿说，如果可能的话，使用牧场秤来检查繁殖季节前几个月内的小母牛的生长情况，以确定小母牛的体重增加是否步入正轨。另一个要点：在冬季喂养期间，通过产犊将成年母牛与成年母牛分开，以保持母牛的身体状况，并帮助提高明年的首次犊牛母牛再繁殖率。

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