Animal blood, such as pig blood and duck blood, has always been considered as a good product for enriching blood. Nutrition experts also said that judging from the nutrients and vitamins in protein, there is little difference between pig blood and duck blood.

But in terms of trace elements, the contents of iron and potassium in pig blood are much lower than those in duck blood. Scientific research data show that the iron content in pig blood is 8.7 mg100g, while that in duck blood is 3 mg100g ... In other words, the nutritional value of pig blood and duck blood is far less than that of duck blood. It is also found that the contents of phosphorus, sodium and cholesterol in pig blood are lower than those in duck blood, so duck blood is more adequate for human nutrition.

This shows that duck blood is better than pig blood. Moreover, if pig blood is eaten too much, it will get angry, while duck blood is warm and nourishing. And duck blood is cleaner than pig blood.

Duck blood and pig blood are both familiar blood-enriching foods, especially the practices of these two kinds of animal blood are very similar. However, from the nutritional value, duck blood is better than pig blood. This has something to do with who needs blood, because people's living standards are better now, but they are more picky about food. Lead to the lack of iron in the body, and iron is an important substance for synthesizing red blood cells and maintaining life activities.

Duck blood and pig blood contain the most iron in food, and duck blood contains more iron than pig blood. The iron content of double duck blood is several times that of pig blood with the same weight, and the iron in duck blood is more easily absorbed by human body. In addition, the study found that duck blood has a good effect of iron supplementation, and pig blood is better for vascular health.