Effects of cecal fistulation upon nutrient digestion and indicator retention in horses.

The research article investigates how cecal fistulation, a surgical procedure to create an opening into the cecum in horses, impacts nutrient digestion and retention of certain indicators in the animals. The study showed that this procedure led to significant increases in the digestion of crude fiber and ether extract, but didn’t significantly change the digestion of dry matter, gross energy, and crude protein. It also increased the retention time of chrome oxide (Cr2O3) and polyethylene.

Study Design and Subjects

• The study involved three mature Thoroughbred geldings. These horses were used in multiple trials conducted both before and after they underwent cecal fistulation.

Methodology and Indicators

• The researchers primarily aimed to determine the effects of cecal fistulation on nutrient digestion and the retention time of two indicators – Chromium oxide (Cr2O3) and Polyethylene.
• These indicators are widely used in nutritional studies to measure the digestibility of nutrients or the passage rate of ingested materials.

Effects on Nutrient Digestion

• After the cecal fistulation procedure was carried out, there were significant increases observed in the digestion of both crude fiber and ether extract in the horses.
• However, the digestion rates of dry matter, gross energy, and crude protein were not significantly changed by the fistulation procedure.

Effects on Indicator Retention Time

• Both Cr2O3 and polyethylene’s retention times, which refer to how long these substances remain in a horse’s body, were significantly increased after the procedure. The P-values being less than 0.01 and 0.05, respectively, indicate these increases were statistically significant.

Comparing Methods of Determining Digestibility

• The study found no significant differences between the three methods used to determine the digestibility rates. This suggests consistency across various metrics and strengthens the validity of the findings.

In conclusion, this research found that cecal fistulation in horses has specific impacts on nutrient digestion and indicator retention times.