Study of the behaviour, digestive efficiency and gut transit times of crib-biting horses.

The research paper discusses a study that was conducted to compare the behavior, digestive efficiency, and gut transit times between normal horses and crib-biting horses.

Background and Purpose

• The paper reviews a study that sought to understand the behavioral and digestive differences between normal horses and crib-biters. A crib-biter is a horse that has developed a habit of seizing and biting onto fixed objects with its incisors, gulping air and giving a grunting noise.
• The study focuses on analyzing the apparent digestibility of dry matter and fibre in these horses, as well as the transit times of digesta. Digesta is the material that passes through the intestine, which includes not only food but also secretions and dead cells.
• The researchers aimed to determine whether there was a difference between these two sets of horses and consequently, understand better the impacts of crib-biting behavior on a horse’s health.

Methodology

• The study was conducted on four normal horses and four horses displaying crib-biting behavior.
• The researchers developed a technique to measure total gut transit times (TGTT) using a single-stool analysis technique. This involved tracking the passage of radio-opaque polyethylene markers, which are visible on X-rays and can be used to monitor the progression of digesta through the gut.

Findings

• According to the study, total gut transit times were recorded to be longer in the crib-biters in comparison to the normal horses.
• In contrast, the orocaecal transit times, which is the time it takes for food to travel from the mouth to the first part of the large intestine, didn’t differ between the two groups.
• The study also revealed behavioral differences; crib-biters were found to rest less than normal horses.

Conclusion

• This study contributes to the understanding of the impacts of crib-biting on a horse’s health. It highlights differences in gut transit times and resting behavior between cribbiting horses and normal ones, which may have implications on their dietary and management needs.