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The use of a silage inoculant for sustainable milk production.

I. Eisner

Events

06-23-2020

Abstract:

163
The use of a silage inoculant for sustainable milk production.
I. Eisner*1, K. Witt1, L. Vandaele2, J. De Boever2, G. Copani1. 1Chr. Hansen Animal Health and Nutrition H�rsholm, Denmark, 2Flanders Research Institute for Agriculture, Fisheries and Food (ILVO) Melle, Belgium.

Optimal use of roughages on dairy farms can save concentrates, improve farm nutrient balance, increase dairy profitability and contribute to the global sustainable milk production. The objective of this study was to investigate the impact of a concentrate reduction in combination with inoculated roughages on feed intake and milk production. Grass silages from 1st and 2nd cut and whole plant maize silage were prepared in side by side bunkers. Control (CON) silages were ensiled without inoculant. Experimental silages were inoculated with SiloSolve FC (FC) containing 50:50 of Lactobacillus buchneri (DSM22501) and Lactococcus lactis (DSM11037) at 1.5 � 105 cfu/g of fresh forage. A crossover feeding trial (2 periods x 4 weeks) with 32 mid-lactation Holstein dairy cows (balanced randomization procedure) investigated the impact on feed intake and milk production. The data were analyzed using a GLM (period * treatment + DIM + (1|cow)). The basal ration of the CON group consisted, on dry matter (DM) basis, of 40% CON maize silage, 40% CON grass silage, 9% sugar beet pulp silage and 11% of a barley/corn mixture. The cows were individually supplemented with concentrates in the feeding stations according to their stage of lactation and milk production. Cows in the FC group were fed the same basal ration but including FC silages and 0.5 kg/head (0.4 kg DM) less concentrate in the feeding stations. The FC cows completely compensated the lower concentrate intake by a 0.4 kg higher roughage DM intake and tended to produce 0.3 kg more milk (34.0 vs 33.7, P = 0.099) with a 0.1% lower fat content (4.21 vs 4.31, P < 0.05), so that the production of fat and protein corrected milk was unaffected. These results demonstrate that the inclusion of the inoculant treated maize and grass silages in the diet of dairy cows allowed for a reduction of daily concentrate intake by 0.4 kg DM without negatively affecting fat and protein corrected milk yield.

Keywords: silage inoculant, concentrate intake, milk production.

Biography: Since September 2018 - Sr. Product Manager Silage Inoculants at Chr. Hansen A/S
January 2010 till August 2018 - Technical Service Manager Ruminants at Kemin Agrifoods Europa
January 2007 till December 2009 - Product Manager Ruminants at Deutsche Tiernahrung Cremer GmbH
June 2007 - PhD at Christian-Albrechts-University of Kiel
January 2005 till December 2006 - Research assistant of the Institute of Animal Nutrition and Physiology on the Christian-Albrechts-University of Kiel