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In this thesis, in weaned piglets and weaners stage diets supplemented with different combinations of probiotics ( third Probiotics Probiotics third- 2000 , a third 3000 probiotics ) , and different concentrations ( 0.3% and 0.5% dosage dosage ) of the same Probiotics , on two stages pig performance and anti-diarrheal effects . Test results showed that adding three kinds of probiotics weaning average daily gain of the experimental group than the control group , respectively, increased 4.38% , 5.79% , 7.05% , feed conversion ratio than the control group , respectively, down 11.8 %, 13.0 %, 14.9 %, the difference significantly (P lt; 0.05); diarrhea rates were diarrhea rate than the control group decreased by 8.30% , 9.97% , 9.97% , the difference was significant (P lt; 0.05). Add three kinds of probiotics weaners experimental group than the control group, the average daily gain were increased by 4.57% , 7.01% , 7.88% , feed conversion ratio decreased 2.88% , 4.94% , 7.41% , significant difference (P lt; 0.05 ) ; experimental group than in the control group were diarrhea rate decreased by 1.67% , but the difference was not significant (P gt; 0.05). Select the third 2000 3000 Probiotics Probiotics and third two kinds of probiotics products , respectively, 0.3% and 0.5% dosage dosage observational weaned piglets performance and anti-diarrheal effects , the results showed that the two different amounts for weaned piglets daily gain, feed conversion and anti- diarrhea effect no significant difference. This experiment shows piglets of probiotics on growth performance and reduce diarrhea have significant role in promoting , but also the role of weaned nursery pigs than the relatively more significant ; adding probiotics to a reasonable dosage principle does not add excessive show the corresponding results, but increased cost of inputs.
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