Aerbic stability of TMR treated with chemical additives - part 3.

Trial no.: 2021.06-4-48GFull
Authors: Fredrik Eide & Madeleine Eide
Time: August 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 an acid-based TMR product which is one of the most commonly used additives for TMR's in Sweden and a Dry TMR product based on recycled products.

The TMR was based on grass silage with a high pH (5,7) and highly concentrated protein mix with high energy content (Addera Mega 440). Minerals and water were also added giving a final Dry Matter of 39 %
After 21 hours the untreated TMR heated, then after 16 hours the Dry-TMR heated as well. The acid-based TMR lasted a little bit longer, 22 hours) and finally Thorsil-TMR lasted 24 hours. All treatements except Thorsil-TMR showed very clear signs of degradation, referring to smell and consistency. Thorsil-TMR showed minor signs of degradation. Weight losses were 15,7 % for untreated, 14,9 % for Dry-TMR, 14,7% for acid treated and 9,4 % for Thorsil-TMR after 3 days.
All treatements lowered the pH after 1 resp 2 days compared to initial pH. Acid-TMR lowered pH emmediately at application, but pH raised after that. Final pH were 6,0; 7,7; 7,3 and 4,2 resp.