It is important to take preventive measures against mastitis in sows after weaning. However, some farmers mistakenly reduce the amount of concentrate, green feed, and water three days before weaning, or even only provide water on the day of weaning. These practices are not recommended and can often lead to delayed estrus in sows. In reality, whether or not you reduce feed before or after weaning has no direct impact on the occurrence of mastitis.
This is because the structure of a sow’s mammary gland is unique—there is no milk reservoir, meaning milk cannot be stored for long periods. As a result, mastitis is not typically caused by excessive milk accumulation. Instead, milk builds up in the udder, increasing internal pressure and naturally stopping further milk production. Therefore, there is no need to reduce feed or interfere with milk production to prevent mastitis.
Weaning itself is not the main cause of issues in sows. One of the primary concerns is excessive weight loss during lactation, especially in first-time sows. These sows may not have fully developed their own bodies, and they must meet the nutritional demands of both fetal development and milk production. Sows that are in poor body condition often experience delayed estrus, which can affect breeding performance.
Therefore, it is advisable not to reduce feed three days before weaning or to stop feeding entirely on the day of weaning. Instead, breeders should continue to provide a balanced diet to support the sow’s health. A special feed formulated for non-pregnant sows, rich in vitamins E and C, carotene, choline, and methionine, can be beneficial. At the very least, lactating sows should be fed until they come into heat, rather than switching to a diet meant for pregnant sows.
By maintaining proper nutrition throughout the lactation period, farmers can help ensure better reproductive performance and overall health in their sows. This approach supports the sow’s recovery and prepares her for the next breeding cycle.
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