[The digestibility of crude nutrients in horses. 1. Methods of determining digestibility].

This research focuses on improving techniques for determining the digestibility of crude nutrients in horse feed, suggesting that an indicator method using a substance known as 4N HCl-insoluble ash yields superior and more reproducible results than traditional methods.

Research Overview

The study set out to investigate the effectiveness of different methods used in computing the digestibility of crude nutrients in horse feeds, specifically contrasting the traditional approach of total faeces collection with the indicator method involving 4 N HCl-insoluble ash.

Methodology

• Two tests were carried out. In both instances, the digestion of crude nutrients in horse feed was observed using both methods.
• The first method engaged during the study involved the total collection of faeces, tagged as the standard procedure.
• The second method employed a specific indicator: the 4 N HCl-insoluble ash.

Findings

• The results from using the indicator method suggested slightly better digestibility in comparison to the standard approach. However, these differences were deemed statistically insignificant.
• The indicator technique was deemed preferable, given the inherent inhomogeneity of horse faeces and the practical advantage of not having to collect all the faeces comprehensively.
• The faeces analyzed in connection with the 4N HCl-insoluble ash method were air-dried, contributing to better reproducibility due to improved homogeneity.

Conclusions and Recommendations

• The paper recommended the use of the 4 N HCl-insoluble ash indicator method over the conventional total faeces collection approach for tests involving the digestibility of crude nutrients in horse feeds. This recommendation was based on the noted practicability, improved homogeneity, and enhanced reproducibility associated with the former.