Nutritional Composition of Nigella Sativa
Nigella sativa contains different bioactive phytochemicals that are primarily responsible for several therapeutic benefits, such as thymoquinone, thymohydroquinone, and nogelleone. Apart from these phytochemicals, Nigella sativa is composed of 20-27% proteins, 34.5-38.7% fats, 23.5-33.2% carbohydrates, 8.4% crude fibers and 4.8% ash. Nigella sativa is a rich source of essential micronutrients like zinc, copper, phosphorus, calcium and iron. The carotene content of Nigella sativa get converted to vitamin A in the liver.  Other vitamins present in Nigella sativa are ascorbic acid, folic acid niacin, thiamine, and pyridoxine. 
The high CPC value and essential amino acid content of Nigella sativa makes it a valuable substitute of soybean meal.  It is imperative to mention that the well balanced nutritional composition of Nigella sativa helps to improve the digestibility. Its dietary regimen enhances growth performance which further indicates that the herbal substitute can adequately balance the feed intake and feed efficiency. 
Nigella sativa Health Benefits
There are several research evidences that have successfully identified various health benefits which are associated with Nigella sativa. These research-based health benefits have been discussed in this article:
The published animal research report has shown that dietary regimen of Nigella sativa improves growth performance. A significant weight gain has been noticed in babies when 10 ml Nigella sativa oil/day was given to the pregnant buffaloes in that study.