Effects of the Reproductive Cycle and Age on Calcium and Phosphorus Metabolism and Bone Integrity of Sows

M. A. Giesemann, A. J. Lewis, P. S. Miller, Mohammed P. Akhter

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

The purpose of this study was to determine the effects of stage of the reproductive cycle and age on Ca and P metabolism and bone integrity of sows. Five-day balance studies were conducted with first- and fifth-parity sows, and sows were slaughtered during the last trimester of gestation, at the end of lactation, or during the last trimester of the subsequent gestation. First-parity sows were studied during their first gestation (n = 11), first lactation (n = 10), or second gestation (n = 10). Fifth-parity sows were examined during their fifth gestation (n = 10), fifth lactation (n = 9), or sixth gestation (n = 9). All sows were fed 1.9 kg/d of a common diet (.76% Ca and .63% P) during gestation and were allowed ad libitum access to the same diet during lactation. Digestibilities of Ca and P were much greater during lactation than during gestation. During gestation, young sows absorbed and retained more Ca and P than did mature sows. However, during lactation, mature sows consumed more feed, and therefore Ca and P, and retained more Ca and P than did young sows. Bones of mature sows were larger, more mineralized, and stronger than the bones of young sows. Bone weight and strength decreased during lactation and increased during the subsequent gestation. Changes in weight and strength were greater in young sows than in mature sows.

Original languageEnglish
Pages (from-to)796-807
Number of pages12
JournalJournal of Animal Science
Volume76
Issue number3
StatePublished - Mar 1998

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Phosphorus
sows
bones
Lactation
Calcium
calcium
Bone and Bones
phosphorus
Pregnancy
metabolism
pregnancy
lactation
Parity
parity (reproduction)
Third Pregnancy Trimester
Diet
Weights and Measures
balance studies
diet
digestibility

All Science Journal Classification (ASJC) codes

  • Animal Science and Zoology

Cite this

Effects of the Reproductive Cycle and Age on Calcium and Phosphorus Metabolism and Bone Integrity of Sows. / Giesemann, M. A.; Lewis, A. J.; Miller, P. S.; Akhter, Mohammed P.

In: Journal of Animal Science, Vol. 76, No. 3, 03.1998, p. 796-807.

Research output: Contribution to journalArticle

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