Effects of flaxseed rich diet on reproductive performance of estrous-synchronized Baluchi ewes

Document Type: Original Articles

Authors

1 Faculty of Agriculture Saray, University of Birjand, Birjand, Iran

2 Department of Agriculture, Payam Noor University, Tehran, Iran

3 Department of Animal Science, Sari Agricultural Sciences and Natural Resources University, Sari, Mazandaran, Iran, P.O. BOX: 578.

4 Department of Breeding and Production of Laboratory Animals, Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran

Abstract

The purpose of this study was to compare the effects of diets supplemented with flaxseed on the reproductive performance in estrous-synchronized 3-year-olds Baluchi ewes. Following the pregnancy and the consequent lambing, the lambs were separated from their mothers upon their birth and the experiment was continued for a period of 60 days after lambing. The experimental diets were divided into six different diets as follows: A) The control group just received a basic ration without flaxseed, B) 2%, C) 5%, D) 7%, E) 10%, and F) 12% flaxseed. Dried matter intake was lower (P< 0.05) in the ewes fed with diet A. The highest average body weight of ewes was recorded for diet A, and the lowest was recorded in ewes fed with diet C (55.2 kg vs 46.4 kg). Estrus rate was similar in all treated groups, all the ewes showed clear signs of estrus up to 4 days after CIDR removal. Ovulation rate was higher for ewes fed with diet A compared with diet C. Supplementing the ewes’ diet with 5% flaxseed caused to increase (P< 0.05) the ovulation rate. The pregnancy rate was high for all the experimental diets compare to the control diet. The highest twinning rate was recorded in the ewes fed with diet B and the lowest pregnancy rate was recorded in ewes fed with 5% flaxseed. Ovulation rate was higher for ewes fed with diet A compared with diet C. Supplementing the ewes’ diet with 5% flaxseed caused to increase (P< 0.05) the ovulation rate. The pregnancy rate was high for all the experimental diets compare to the control diet. The highest twinning rate was recorded in the ewes fed with diet B and the lowest pregnancy rate was recorded in ewes fed with 5% flaxsee. Ovulation rate was higher for ewes fed with diet A compared with diet C. Supplementing the ewes’ diet with 5% flaxseed caused to increase (P< 0.05) the ovulation rate. The pregnancy rate was high for all the experimental diets compare to the control diet. The highest twinning rate was recorded in the ewes fed with diet.

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