Korean Journal of Veterinary Research (대한수의학회지)

The Korean Society of Veterinary Science (대한수의학회)
권호 표지

An Estimation on the Feeding Values of Urea-mixed Zeolite In Vitro

In Vitro에 의한 제올라이트·요소합제(尿素合劑)의 사료효율(飼料效率) 판정(判定)

  • Rhee, Jae Ku (Department of Veterinary Medicine, College of Agriculture, Jeonbug National University) ;
  • Lee, Ho Il (Department of Veterinary Medicine, College of Agriculture, Jeonbug National University)
  • 이재구 (경북대학교 농과대학 수의학과) ;
  • 이호일 (경북대학교 농과대학 수의학과)
  • Published : 1981.10.15
Download PDF
⟨ Previous Next ⟩

Abstract

In order to estimate the efficiency of feed added urea-mixed zeolite the experiment was carried on in vitro. The results obtained were as follows: 1. The pH of all media added urea were inclined toward alkali, except 1% urea (included 99% zeolite) medium. 2. The concentration of ammonia in all media added urea-mixed zeolite was inversely proportional to added volume of zeolite; 1,349, 1,298, 1,255, 1,164 and $786{\mu}g/ml$ 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. 3. 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 use practica11y because they need much amount of zeolite.

Keywords