The Effects of Sow Parity on Digestibility of Proximate Components and Minerals during Lactation as Influenced by Diet and Microbial Phytase Supplementation

P. A. Kemme, J. S. Radcliffe, A. W. Jongbloed, Z. Mroz

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

Ninety-six (Finnish Landrace × Dutch Landrace) reproductive sows were used at parities 1, 3, 5, and 7 + 8 from d 107 of gestation to d 21 of lactation to investigate the effects of diet and parity on apparent total tract digestibility (ATTD). Animals were randomly assigned to one of four dietary treatments. Dietary treatments were 1) a P-deficient (1.1 g digestible P [dP]/kg) Dutch semipractical diet; 2) Diet 1 supplemented with 400 FTU Aspergillus niger phytase per kilogram of diet (1.7 g dP/kg); 3) a corn-soybean meal-based diet (1.3 g dP/kg); and 4) Diet 3 supplemented with extra monocalcium phosphate (MCP; 2.4 g dP/kg of diet). Animals were fed twice daily at 2.8 times maintenance (418 kJ ME/ BW.75) from d 8 to the end of lactation. Feces and urine were collected during d 11 to 13 and d 18 to 20 of lactation. The ATTD of DM, OM, ash, CP, Ca, Mg, and total P (P < .01) were higher for the corn-soybean meal-based diets than for the Dutch semipractical diet not supplemented with phytase. Addition of MCP enhanced total P ATTD by an average of 6.7 percentage units. Addition of microbial phytase improved Ca, Mg, and total P ATTD, but the effects were dependent on the stage of lactation. Lower ATTD of OM and CP were seen for first parity animals compared with higher parity sows. The ATTD of Mg increased with increasing parity. Parity had little effect on the ATTD of minerals during lactation, and dietary effects were prominent and followed a similar trend to those seen in growing-finishing pigs.

Original languageEnglish
Pages (from-to)2147-2153
Number of pages7
JournalJournal of Animal Science
Volume75
Issue number8
DOIs
StatePublished - Aug 1997

Keywords

  • Calcium
  • Digestibility
  • Lactation
  • Parity
  • Phosphorus
  • Pigs

ASJC Scopus subject areas

  • Food Science
  • Animal Science and Zoology
  • Genetics

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