The pig in the ante and post-partal period. 1. Studies on serum electrolyte concentrations (Ca, inorganic phosphorus, Mg) and on the serum and milk content of Fe and Cu |
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| Authors: | H Bostedt |
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| Abstract: | A group of 23 sows, with their first or second litter, were tested for the development of the calcium, anorganic phosphate, magnesium, iron and copper levels in the blood serum in the peripartal period up to the end of the 3rd week of lactation. It could be shown that in some of the sows (25%) in the first three days after giving birth a condition which could be called latent hypocalcaemia occurred, while the other animals retained almost the previous amount of calcium concentration. Statistics showed that (p less than or equal to 0.05--0.01) all the animals had a decrease in anorganic phosphate content post partum (p.p.). No marked changes in the Mg concentrations were found during the research period. However, there was a considerable decrease in the Fe concentrations in the blood serum within the first 24 hours after birth (p less than or equal to 0.05). The iron value after the end of the 3rd week of lactation was lower than the value before the birth -- 132.8 +/- 42.7 microgram/100 ml as against 144.7 +/- 51.1 microgram/100 ml: -- 8.2% under. On the other hand there was an increase in the serum Cu content (p less than or equal to 0.05--0.01). The Fe as well as the Cu concentration decreased in the milk within the first 8 days by more than a half. |
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