“…those (the loss rates) were 32.0% (powdery sodium butyrate), 28.0% (granular sodium butyrate) respectively when the moisture of feed was above 14~16%” Loss Rates: 28% to 32%!
“When the pelleting temperature ranged from 78℃ to 81℃ to 85℃, the loss rate of powdery sodium butyrate ranged from 67.1% to 67.9% to 68.7% respectively, the loss rate of granular of sodium butyrate ranged from 36.5% to 38.6% to 39.7%” Loss Rates: 36.5% to 39.7%!
The stability research of different types of sodium butyrate in course of processing
CHENG Guo-shun1 XU Zhen-fei1 YU Rong2 ZHAO Fang-fang1,2 XU Xiao-fang2
1 College of Animal Science and Technology, Gansu Agricultural University, Gansu Lanzhou, 730070 2 National Engineering Laboratory of Biological Feed Security and Contamination Control, Test Base of Biological Coating Engineering, Zhejiang Hangzhou, 311107
Abstract: The objective of this study is to research the stability of sodium butyrate in feedstuff. The sodium butyrate with three types of microencapsulated, powdery and granular was produced at three different factories and sampled at different production links aand determined the content. The results showed that with increasing of moisture in feedstuff, the loss rate of sodium butyrate had increased. The loss rates of microencapsulated sodium butyrate of different moisture in feedstuff were less than 2.0%. The optimized sequence of premix carrier determined by the stability research was Rice hull powder, Wheat-middlings, Ca(HCO3)2, Zeolite and CaCO3. The trace elements with high dosage and choline chloride with strong hygroscopicity would consume and damage feed nutrients, but the effect would be improved after coating. Under the same pressure, the loss rate of sodium butyrate increased with increasing of pelleting temperature. The powdery and granular sodium butyrate were decomposed in artificial gastric juice and intestinal juice, but the microencapsulated sodium butyrate gradually released in gastrointestinal tract and made more sodium butyrate reach hindgut.
Key words: feed, sodium butyrate, coating, stability, retention rate