Impact of silage on animal health
| Main Author: | Scientific Committee on Animal Nutrition |
|---|---|
| Format: | Report Journal |
| Terbitan: |
, 2010
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/820029 |
Daftar Isi:
- Silage as an animal feed is made over 3000 year around the world. For ruminants, silage is the major part of feed during the winter time. The production of silage is permanently growing in the EU. Hazard to animals health associated with silage could be divided into three categories: 1) Presence of udesirable and/or pathogenic microorganisms; 2) Presence of undesirable chemical compounds; 3) excess acidity and presence of undesirable microbial metabolites. Clostridia are most frequently presented undesirable bacteria, beiing harmfull for the milk and cheese production. Listeria monocytogenes in aerobically spoiled silage form a serious risk to animal and human health. Pathogenic E. coli can also be presented. On the other hand, the silage is a source of potentially probiotic lactic acid bacteria (e.g. Lactobacillus plantarum). Undesirable chemicals in silage include mainly mycotoxins like deoxynivalenol, zearalenon, ochratoxin and fumonisins. Also, corn silage sometimes contains aflatoxins. Phytoestrogens and plant alcaloides may survive ensiling process and constitute risk to animalhealth. Relatively litlle is known about the mechanisms of metabolic diseases related to silage. Too acid silage (pH < 3.5) can cause acidosis in dairy cows. High content of butyric 30 acid in silage can results in subclinical ketosis. Other silage microbial metabolites (ethanol, propanol) should also be investigeted.
- CZ; cs; klara.bauerova@mze.cz