Nitrogen digestion in different segments of the equine digestive tract.

The research focused on understanding how proteins from different grains are digested in various parts of a horse’s digestive tract.

Research Methodology

• The researchers conducted a replicated Latin square experiment involving three ponies.
• The subject ponies were fed corn, oats, and barley to study protein digestion.
• The process of digestion was monitored both before (anterior) and after (posterior) the cecal fistulas – openings created in the cecum, a part of the horse’s large intestine.
• This study involved the use of chromic oxide indicator procedures – techniques that enable precise estimation of nutrient absorption and digestibility levels.

Key Findings

• Reported protein digestion rates averaged 11% before reaching the cecal fistulas and 40% after passing this point.
• These findings indicate that the cecum, along with the colon, are crucial stages for protein digestion in horses.
• However, no significant differences were noted in the digestibility of proteins derived from corn, oats, and barley, implying that the type of grain may have a minimal effect on protein uptake in horses.

Conclusion

• This study highlights the major role the cecum and colon play in protein digestion in equines, thus providing valuable understanding for balanced dietary formulations and better nutritional management strategies.