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sow's milk is low in iron. Vitamin D supplements are also given to compensate for the lack of sunlight. As the sows' bodies become less capable of handling the large litter sizes encouraged by the industry, the frequency of stillborn piglets generally increases with each litter. These high litter sizes have doubled the death rates of sows, and as many as 25%-50% of sow deaths have been caused by prolapse, the

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