men tieu hoa chia lam 2 loai la vi sinh va enzym. da phan heo tieu chay la do ph duong ruot >3,5-4 thich hop cho ecoli va somela phat trien. vi vay de giam ph xuong <3,5 thi can loi khuan duong ruot de canh tranh hoac tieu diet hai khuan. doi voi heo duoi 30 thi can enzym nhieu hon vi day la giai doan nhay cam, gap yeu to bat loi thi do ph se tang cao tao dieu kien cho mam benh duong ruot phat trien. ve co ban thi nhu tui da trinh bay
ve men vi sinh thi k chieu duoc nhiet do cao, da phan cam vien la dun ep tren 70oC nen men vi sinh k co trong cam ma phai tron rieng o ngoai, trong cam thi co enzym vi loai nay chieu duoc nhiet nhung theo toi thi co rat it k du dap ung cho heo nen ta van phai bo sung them
de bo may tieu hoa phat trien tot thi can ca men vi sinh lan enzym, acid huu co
vi sinh thi gom : cac nhom latobacillus, bacillus ( loai nay song trong ruot non ) ; bafidobacterum ( song trong ruot gia ) va nam men aspergillus bam trong thanh ruot
cac enzym : beta-blucanase,amylase,protease,phytase,cellulase,xylanase
acdic huu co thi co 2 dang vo boc va k boc.
khi con heo moi sinh ra doi den khi 50-60kg thi cac loai men tieu hoa chua hoan thien vi vay ta can bo sung vao nhung giai doan do la chu yeu, sau 50kg tro di thi hinh thanh tuong doi on dinh nen viec bo sung men cho cac giai doan sau k can thiet nhieu ( doi voi heo khoe ). khi nuoi heo thi luc nao can bo sung : giao mua ( nang-mua ), heo benh, vaccin, nhap heo, doi cam, ghep bay, di phan co van de.....tuy vao muc dich ma ban muon su dung nhieu hay it de giam chi phi, toi vi du : neu 1 bay heo phat trien tot thi chac chan tieu hoa va hap thu thuc an tot thi viec bo sung men lien tuc hoac nhieu la thua ( thuong thi men 10 mu 9 la 1-2g/1kg thuc an, 10 mu 8 3-5g/1kg thuc an ). vua men vua enzym thi 1 kg phai tu 180-200k doi voi loai tot.
nhung dieu tui up len chi la mang tinh chat tham khao, neu co sai hoac thieu sot thi moi nguoi cung bo sung hoac sua doi
