Influence of maternal dietary calcium levels on milk zinc, calcium and phosphorus contents and milk production in rats

Journal of Trace Elements in Medicine and Biology : Organ of the Society for Minerals and Trace Elements (GMS)
Adriana WeisstaubPatricia A Ronayne de Ferrer

Abstract

The aim of this study was to analyze zinc (Zn), calcium (Ca) and phosphorus (P) contents in milk and the lactational performance in rats fed different Ca levels. Female Wistar rats were fed during pregnancy and lactation with experimental diets containing 20% protein and high (0.90%, HCa), normal (0.60%, NCa) or low (0.20%, LCa) Ca levels. Milk samples were collected after 15 days to determine the milk mineral composition. Pup weight was recorded from birth to weaning (litter size: 6-8 pups) to determine weight gain and calculate milk production. At delivery there were no significant differences in the body weight of the pups between the groups, but at day 15, the LCa group showed lower values than both NCa and HCa groups (p<0.05). The weight gain of the LCa group was significantly lower than of the HCa and NCa groups, between delivery and day 5 (p<0.05). This reduced rate of weight gain led to the LCa group reaching weaning weight later than the other groups. Milk production (g/pup/day) was significantly lower when dams were fed the LCa than the NCa and HCa diets (p<0.05). There were no significant differences among the groups in milk Ca, P and Zn levels and Ca/P ratio. The body mineral composition of the pups at birth did not...Continue Reading

References

Sep 1, 1984·Journal of Pediatric Gastroenterology and Nutrition·D A Sampson, G R Jansen
Mar 1, 1980·Physiology & Behavior·C L KeenL S Hurley
Aug 9, 1995·JAMA : the Journal of the American Medical Association·R L GoldenbergJ C Hauth
Jun 1, 1993·Journal of Dairy Science·P A Ronayne De Ferrer, M E Sambucetti
Aug 6, 1998·Biology of the Neonate·M F Picciano
Aug 15, 2000·Annual Review of Nutrition·A Prentice
May 21, 2003·Journal of Trace Elements in Medicine and Biology : Organ of the Society for Minerals and Trace Elements (GMS)·Adriana WeisstaubMaría Luz de Portela

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Citations

Sep 18, 2013·Physiology & Behavior·Anna Voznesenskaya, Michael G Tordoff
Apr 15, 2011·Metabolism: Clinical and Experimental·Kamini D DangatSadhana R Joshi
Nov 17, 2020·Nutrition Reviews·Guadalupe L Rodríguez-GonzálezElena Zambrano

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