Intestinal absorption of calcium and phosphorus by horses.

This research reviews current understanding on how horses’ intestines absorb calcium and phosphorus. It looks at the sites, mechanisms, and influencing factors of absorption, and how effectively these minerals can be obtained from common Eastern North American feeds.

Objective of the Research

• The aim of this study is to review and summarize current knowledge on how horses’ intestines absorb calcium and phosphorus.
• This includes an evaluation of absorption sites, the mechanisms by which these minerals are absorbed, and what factors can influence absorption levels.
• The study also examined the effectiveness of obtaining these minerals from the feedstuffs commonly used in Eastern North America for feeding horses.

Scope of the Research

• Sites of absorption were considered, providing an understanding of where within the horses’ gastrointestinal tract these minerals are absorbed.
• The research explored the process mechanisms involved in the absorption of calcium and phosphorus, delving into the biological and chemical reactions facilitating this process.
• Consideration was given to factors that could potentially impact these absorption mechanisms. These could relate to the horses’ physical health, dietary intake, or environmental factors.
• The study aimed to determine the availability and effectiveness of calcium and phosphorus in the feedstuffs common in Eastern North American horse diets. This involved evaluating whether the food sources provided these minerals in adequate amounts that could be effectively absorbed by the horse.

Outcome of the Research

• Despite potential limitations due to the specific structure of the horse’s digestive tract, findings showed that horses were highly efficient in utilizing the calcium and phosphorus available in many feeds.
• Such data can be used to refine dietary guidelines for horses, particularly those in Eastern North America, to ensure they receive optimal amounts of calcium and phosphorus for their health and performance.