JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Effects of Gestational Status on Apparent Absorption and Retention of Copper and Zinc in Mature Angus Cows and Suffolk Ewes
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Effects of Gestational Status on Apparent Absorption and Retention of Copper and Zinc in Mature Angus Cows and Suffolk Ewes
Vierboom, M.M.; Engle, T.E.; Kimberling, C.V.;
  PDF(new window)
 Abstract
Six mature purebred Angus cows ( years of age, ), three pregnant ( days pregnant) and three non-pregnant and eight mature Suffolk ewes ( years of age, ) four pregnant days pregnant) and four nonpregnant were utilized in a five-day metabolic trial to determine the effects of gestational status (pregnant vs. non-pregnant) on apparent absorption and retention of copper (Cu) and zinc (Zn). Animals were selected based on body weight, age, and gestational status, and randomly assigned to metabolic crates for total fecal and urine collection. Animals were allowed to acclimate to their new environment for seven days. Pregnant and non-pregnant cows and ewes were then paired (within a species) by body weight and pair-fed throughout the 5 day collection period. Copper and Zn intakes were similar for pregnant and non-pregnant animals within a species. Apparent absorption of Cu (p<0.06) and Zn (p<0.04) were higher in pregnant cows relative to non-pregnant cows. Pregnant cows also had a higher apparent retention of Cu (p<0.05) and Zn (p<0.06) relative to non-pregnant cows. Pregnant ewes had a higher (p<0.01) apparent absorption and retention of Zn compared to non-pregnant ewes. However, apparent absorption and retention of Cu were similar for pregnant and non-pregnant ewes. These data indicate that certain physiological and/or metabolic parameters are altered in pregnant cows and ewes consuming an alfalfa-based diet that enhance the apparent absorption and retention of certain trace minerals.
 Keywords
Copper;Zinc;Gestation;Cow;Ewe;
 Language
English
 Cited by
1.
Effects of Dietary Copper on Ruminal Fermentation, Nutrient Digestibility and Fibre Characteristics in Cashmere Goats,;;;;;;

아세아태평양축산학회지, 2007. vol.20. 12, pp.1843-1848 crossref(new window)
 References
1.
Adamson, A. H., D. A. Valks, M. A. Appleton and W. B. Shaw. 1969. Copper toxicity in housed lambs. Vet. Rec. 85:368-369.

2.
Brenmer, I., B. W. Young and C. F. Mills. 1976. Protective effects of zinc supplementation against copper toxicosis in sheep. Br. J. Nutr. 36:551-561. crossref(new window)

3.
Engle, T. E., C. F. Nockels, K. L. Hossner, C. V. Kimberling, R. E. Toombs, R. S. Temm, D. L. Weaber and A. B. Johnson. 1997. Marginal zinc deficiency affects biochemical and physiological parameters in beef heifer calves. Asian-Aust. J. Anim. Sci. 10:471-477.

4.
Feldsman, R. J., M. B. Wise, R. W. Harvey and E. R. Barrick. 1973. Effect of added dietary levels on copper sulfate and an antibiotic on performance and certain blood constituents in calves. J. Anim. Sci. 36:157-166.

5.
Hansard, S. L., A. S. Mohammed and J. W. Turner. 1968. Gestation age effects upon maternal-fetal zinc utilization in the bovine. J. Anim. Sci. 27:1097-1102.

6.
Mehra, R. K. and I. Bremner. 1984. Species differences in the occurrence of copper-metallothionein in particulate fractions of the liver of copper-loaded animals. Biochem. J. 219:539-546.

7.
Mills, C. F. 1980. In '3rd Annual International Mineral's Conference', Orlando, FL. p. 47

8.
Pryor, W. J. 1964. The distribution of copper in bovine and ovine fetuses, with reference to their age and maternal liver copper concentrations. Res. Vet. Sci. 5:123-137.

9.
SAS. 1988. SAS/STAT User's Guide (Release 6.01). SAS Inst. Inc., Cary, NC.

10.
Swanson, C. A. and J. C. King. 1982. Zinc utilization in pregnant and non-pregnant women fed controlled diets providing the zinc RDA. J. Nutr. 112:697-707.

11.
Turnland, J. R., C. A. Swanson and J. C. King. 1983. Copper absorption and retention in pregnant women fed diets based on animal and plant proteins. J. Nutr. 113:2346-2352.

12.
Underwood, E. J. 1977. Trace Elements in Human and Animal Nutrition, 4th ed., Academic Press, New York. p. 545

13.
Underwood, E. J. and N. F. Suttle. 1999. In: The Mineral Nutrition of Livestock 3rd Ed. CABI Publishing, CAB International, Wallingford, Oxon, UK.