Aerbic stability of TMR treated with chemical additives - part 1.

Trial no.: 2021.04-3-39GC
Authors: Fredrik Eide & Madeleine Eide
Time: July 2021
Publication date: 2nd of September 2021
Communication: info@wiffr.org

Abstract

During hot summerdays, the ratio given to the animals takes heat quickly. If the silage isn't treated with conserving additives, the heating may well happen after a few hours. The aim of the trial was to test a completely new TMR additive while comparing with propionic acid which is one of the most commonly used additives for TMR's.

The TMR was based on well fermented grass and corn silage, so the pH value was very low at start (4,1).
After only 10 hours, the untreated TMR heated, while the propionic based TMR lasted about 2 days. The chemical based additive (Thorsil) lasted as long as 5 days when the trial was stopped. Thorsil-TMR didn't show any signs of degradation. Weight losses were 12,6 % for untreated, 3,0 % for propionic acid treated and only 1,1 % for Thorsil-TMR after 5 days. Final pH were 7,75; 4,42 and 4,23 resp.