Nigella sativa (NS) commonly known as black seed or black cumin is a grassy plant grows in temperate and cold climate areas and has green to blue flowers and small black seeds. It is an annual herbaceous plant native to Asia and cultivated and naturalized in Europe and North Africa (Boseila and Messalam 2011). In Egypt, NS has been steadily increasing for the strong demand to volatile oils for pharmaceutical purpose (Tohamy ey al., 2010). The seeds of Nigella sativa composed of protein (20-27%), fat (34.5-38.7%), carbohydrates (23.5-33.2%) crude fibre (8.4%) and ash (4.8%) (Abdel-Nasser and Al-Suwaiegh, 2016). The seeds also contain good number of various vitamins and minerals like Zn, Cu, P, and F as well as carotene, which converts by the liver to vitamin A (Ahmad et al., 2013). Moreover, Nigella sativa containing active materials known as nogelleone, thymoquinome, and thymohdroquinone that were shown to possess antimicrobial, antitoxic and pharmacological activities via increasing the defense mechanisms against infectious diseases (Forouzanfar et al., 2014). It is considered one of the most important medicinal plants in the world, due to its beneficial effects. It has been proposed as a natural alternative to antibiotics in order to improve the health status of animals, and to increase the production and quality of animal products (Longato et al., 2015). Diet can influence the blood biochemical parameters, which are sensitive indicators of the state of health and reflect the intensity of metabolic processes taking place in the animals (Adeyemi et al. 2016). Perinatal mortality is a major cause of low productivity of sheep (Aldomy et al., 2009). Furthermore, the loss of lambs around the time of pregnancy is costly due to the investment in getting the ewe to the stage of lambing. There are many factors that cause lambs' loss including poor feeding of lambs, environmental conditions, predators and ewes' diseases (Solomon et al.,