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The Scientific World Journal
Volume 2012, Article ID 601840, 7 pages
Research Article

Effect of Calcium Soap of Fatty Acids Supplementation on Serum Biochemical Parameters and Ovarian Activity during Out-of-the-Breeding Season in Crossbred Ewes

1Department of Biology, Animal Reproduction Research Institute, El-Ahram, Giza, Egypt
2Department of Parasitology and Animal Diseases, National Research Center, El-Behouse Street, P.O. Box 12622, Dokki, Giza, Egypt
3Ultrasonography Unit, Animal Reproduction Research Institute, El-Ahram, Giza, Egypt

Received 31 October 2011; Accepted 2 January 2012

Academic Editors: S. Behboudi and C. C. Chang

Copyright © 2012 Hayat H. M. El-Nour et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This experiment aimed to evaluate the effect of calcium soap of fatty acid (CSFA) supplementation on serum biochemical and hormones and ovarian activity during out-of-the-breeding season in ewes. Twelve crossbred ewes, 2-3 years of age and weighting 45–55 kg, were allocated into two equal groups. The first group was control and the other was treated with 50 g/head of CSFA. All ewes were fed basal diet and treated with 60 mg of medroxy progesterone acetate intravaginal sponge for 12 day. At the third day of sponge removal, the CSFA-treated group was given 50 g/head of CSFA daily for two estrous cycles. During the estrus phase, ovarian activity was detected using ultrasonography in both groups. All ewes were then subjected to natural breeding and conception rate. Blood samples were collected from all ewes during treatment period. Results revealed significant ( 𝑃 < 0 . 0 5 ) increases in serum cholesterol, triglycerides, low-density lipoprotein cholesterol, glucose, and progesterone levels with decrease in calcium and phosphorous levels in treated group. In treated group, normal-size ovaries and more than one follicle on the ovaries were detected and pregnancy rate increased. In conclusion, CSFA supplementation was effective to maintain the reproductive performance when ewes were out of the breeding season.