Reproductive performance and lamb’s birth weight in Ossimi ewes treated with organic selenium and nano-selenium under Upper Egyptian condition | ||||
| Archives of Agriculture Sciences Journal | ||||
| Article 19, Volume 4, Issue 3, December 2021, Page 276-287 PDF (461.16 K) | ||||
| Document Type: Research article | ||||
| DOI: 10.21608/aasj.2021.250472 | ||||
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| Authors | ||||
M. F. A. Abd-Elkareim1; M. E. Ali   1; S. Fahmy1; A. H. Hussein2
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| 1Department of Animal Productions, Faculty of Agriculture, Al-Azhar University, 71524 Assiut, Egypt | ||||
| 2Department of Theriogenology, Faculty of Veterinary Medicine, Assiut University, 71526 Assiut, Egypt | ||||
| Abstract | ||||
| The goal of this study was to assess reproductive performance, estrus signs, and lamb’s birth weight in Ossimi ewes treated with organic selenium and Nano-selenium under Upper Egyptian conditions. In this experiment, a total of 30 ewes were divided into three equal groups (10 ewes /each). All of the animals were given intra-vaginal sponges (IVS) impregnated with medroxy-progesterone-acetate (MAP, 40 mg) for 14 days. Then, in the G1: (CG) control group, and the ewes in G2 (SeG) were given organic selenium 3 mg/ewe orally for 14 days from insert IVS, whereas the ewes in G3: (N-SeG) were given Nano-selenium 0.2 mg/animal orally for 14 days from insert IVS. Also, after 50±5 days of parturition (post-partum), the ewes divided randomly into 3 equal groups (10 ewes/each), and managed with the same previous treatments. The results showed that ewes given organic selenium and Nano-selenium had longer (P<0.01) in estrus duration and took a shorter (P<0.01) period to show estrus than control group in both the first service and post-partum. In addition, during the first service and post-partum, the estrus response in SeG and N-SeG were significantly higher (P<0.05) than CG. However, the intensities of estrus signs as swollen vulvar lips and redness of the vaginal membranes were clearly apparent on the ewes in SeG and N-SeG compared to the CG. Also, the body weight of lambs born from ewes treated with organic selenium and Nano-selenium increased significantly (P<0.01) compared to the control group. The body weight of the lambs in N-SeG was higher (P<0.01) after 15 days of parturition than in CG. In conclusion, treatment with organic selenium and Nano-selenium could improve the reproductive performance, estrus signs, and lamb birth weight in ewes under Upper Egyptian climatic conditions. | ||||
| Keywords | ||||
| ewes; estrus response; conception rate; nano-selenium; organic selenium | ||||
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