Aerobic stability of wheat silages in a subtropical climate

✍ Scribed by Norberto Lisker; Eli Taari; Gilad Ashbell; Yigal Henis

• Book ID: 102921351
• Publisher: John Wiley and Sons
• Year: 1987
• Tongue: English
• Weight: 531 KB
• Volume: 39
• Category: Article
• ISSN: 0022-5142
• DOI: 10.1002/jsfa.2740390103

✦ Synopsis

Batches of wheat silage stored under farm conditions in bunker silos at two locations in Israel were exposed to air for up to 3 days in order to study their aerobic stability. Each batch was examinedfive times at approximately two month intervals during 1983/84 f o r changes in dry matter, p H , watersoluble carbohydrates, in vitro digestibility, ash, crude protein, ammonianitrogen, glucose, crude fibre, volatile fatly acids, lactic acid, moulds, yeasts and aerobic bacteria. Consistent changes in silage composition after 3 days of aerobic exposure were noticed with an increase in dry matter and in mould counts, and a decrease in acetic acid and in most cases also in lactic acid. Yeasts and bacteria had a tendency to increase during the 3 days of air exposure.

Experiments carried out under laboratory conditions with silages kept at 26°C in an atmosphere of 99% RH showed that after 3 days there was only a slight increase in dry matter, a decrease in acetic and lactic acids, watersoluble carbohydrates and ammonia-nitrogen, and an increase in the total number of micro-organisms. Only after 7 days did the deterioration process start.