An estimation on the feeding value of urea-mixed zeolite in vitro
1981
Rhee, J.K. | Lee, H.I. (Chunpuk National Univ., Chunju (Korea R.). Coll. of Agriculture. Dept. of Veterinary Medicine)
In order to estimate the efficiency of feed added urea zeolite the experiment was carried on in vitro. The pH of all media added urea were inclined toward alkali, except 1% urea (included 99% zeolite) medium. The concentration of ammonia in all media added urea mixed zeolite was inversely proportional to added volume of zeolite; 1,349, 1,298, 1,164 and 786 micron g/ml in 40%, 20%, 10%, 5% and 1% urea media respectively for 30 minutes incubation, and the concentration of ammonia in all media was increased steadily as incubation time proceeded until 9 hours. The efficiency of adsorption of ammonia to zeolite of the feed added 40% urea mixture (dealing in the feed store) was hardly recognized. Accordingly, it is efficient to utilize the feed added 1-5% urea mixture, but it is of no practical use because they need much amount of zeolite.
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