The effect of artificial rearing on the growth of foals.

The research explores the impact of artificial rearing on the growth rate of foals. The study reveals no significant difference in growth between the two groups (artificially reared versus naturally weaned) apart from a slight weight advantage at week 8 for naturally weaned foals.

Objective and Methodology of the Research

• The researchers set out to investigate the effects of artificial rearing on the growth and development of foals, using live body weight, height at the withers, and length of body from the point of shoulder to the hip as the variables of interest.
• They used a sample of fourteen Quarter Horse foals, split into two groups. Seven were artificially reared, removed from their dams’ care at just 3 days old and nourished with a reconstituted 26% crude protein milk replacer for a month before being switched to solid feeds. The other seven foals were allowed to wean naturally from their dams at 2 months old and were subsequently provided a 21% CP concentrate to feed on until the trial’s conclusion.

Findings of the Research

• No significant difference was found in the growth measurements between artificially reared and naturally weaned foals for the most part of the 26-week trial duration.
• An exception occurred in the 8th week of the experiment when naturally weaned foals were found to be slightly heavier, though the significance level of this finding is less than .10, indicating that it could have occurred due to chance.
• A comparison of average daily weight gains revealed a negligible difference of .03 kg between the artificially reared and naturally weaned foals, registering at .95 and .98 kg, respectively.

Conclusions of the Research

• This research concludes that, as far as the variables studied here are concerned, artificial rearing of foals does not significantly influence their growth when compared to naturally weaned counterparts.
• The minor weight advantage in naturally weaned foals at the 8th week of the research is observed to be statistically insignificant.
• The artificial method may thus offer a viable alternative in facilitating early nutritional requirements for foals where natural weaning cannot occur, without adversely affecting their growth trajectory.