+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

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

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 20(1): 41-47

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 differ between the groups; at weaning, however, both LCa and HCa groups had lower element contents than the NCa group (p<0.05). In conclusion, dams fed with a diet containing low Ca levels produced smaller volumes of milk and their pups reached weaning weights later than the other groups. As the milk mineral composition was not affected, it can be hypothesized that in dams fed low dietary Ca, the smaller milk yield might have been a way of maintaining milk quality. High Ca levels affected neither pregnancy outcome nor lactational performance.

Please choose payment method:

(PDF emailed within 0-6 h: $19.90)

Accession: 012209926

Download citation: RISBibTeXText

PMID: 16632175

DOI: 10.1016/j.jtemb.2006.01.001

Related references

Influence of low dietary calcium on pup growth and zinc levels in maternal blood and milk, in rats. FASEB Journal 13(4 PART 1): A579, March 12, 1999

Influence of maternal low dietary calcium on pup growth and milk production, in rats. FASEB Journal 14(4): A236, March 15, 2000

Influence of low dietary calcium during pregnancy and lactation on zinc levels in maternal blood and bone in rats. Journal of Trace Elements in Medicine and Biology 17(1): 27-32, 2003

Studies on minerals of milk and milk products. II. Calcium, magnesium, and phosphorus contents and P/Ca ratio in milk ash.. Jap. J. zootech. Sci, 31: 6, 300-03, 1961

Effect of feeding calcium chloride to goats on their body weight and milk production and on the composition, especially the fat and calcium contents, of their milk. Hanover : Thesis, 1938

Effect of diets low in phosphorus and high in dietary calcium on phosphatemia and phosphorus and calcium levels in rumen contents of sheep. Reproduction, Nutrition, Developpement 22(5): 865-879, 1982

Pregnancy and lactation Calcium , phosphorus absorption, bone mass and composition, milk production and pup growth in rats fed different calcium content diets. Journal of Bone & Mineral Research 15(Suppl 1): S422, 2000

Calcium and phosphorus fortification of mothers milk and formula for premature infants metabolic balance of calcium phosphorus and zinc at two postnatal ages. FASEB Journal 4(3): A506, 1990

Studies on the diffusible calcium, phosphorus, citric acid and ionized calcium in milk ultrafiltrate. Part I. On the un-heated milk (the negative and positive milk for the alcohol test.). Rep. Res. Lab., Snow Brand Milk Prod, Japan, 45: 12, 1958

Effect of various doses of nitrogen compounds in feeds on some mineral contents in cattle blood serum and milk. II. Contents of Na, K, Cl, Ca, P inorg., Mg, sodium, potassium, chlorine, calcium, inorganic phosphorus, magnesium and urea in milk.1. Zeszyty naukowe Academia Rolnicza w Szczecinieub 1981) 16(83): 211-222, 1981

Zinc, copper, iron, calcium, phosphorus and magnesium content of maternal milk during the first 3 weeks of lactation. Archivos Latinoamericanos de Nutricion 47(1): 14-22, 1997

Influence of various phytate sources on the phosphorus calcium and zinc metabolism of young pigs at different dietary zinc levels. Journal of Animal Physiology & Animal Nutrition 60(3): 146-157, 1988

Effects of dietary calcium and available phosphorus concentration on digesta pH and on the availability of calcium, iron, magnesium and zinc from the intestinal contents of meat chickens. British Poultry Science 32(1): 185-194, 1991

Studies on the inorganic salts of human milk. I. Nitrogen calcium and phosphorus contents in the ultracentrifugal sediments of the milk. J. agric. Chem. Soc, Japan, 38: 2, 71-76, 1964

Phosphorus and calcium metabolism in growing calves with special emphasis on phosphorus homeostasis 4. studies on milk fed calves given different amounts of dietary phosphorus but a constant intake of calcium. Journal of Agricultural Science 113(3): 285-290, 1989