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Application effects of Antibacterial Peptide in cow’s diet

2014.11.10

1. Experimental objection

This experiment was conducted to see the effects of Antibacterial Peptide on mastitis, milk production and somatic cell count milk production of cow.

2. Product introduction

Main component: Antibacterial Peptide of silkworm generated by gene-engineering bacteria-- bacillus subtilis.

Main function: Improve immunity, kill bacterium and antivirus.

3. Experimental design

Experimental date: 4th June- 5th August, 2014;

Experimental place: one cow pasture of Guangdong Wenshi Company;

Experimental design: Randomly divide 400 cows with same milking period into two treatment: Control Group and Experimental Group (adding 10 g/cow.day Antibacterial Peptide).

Table 1  Experimental design

 

Control Group

Experimental Group

Experimental cows

200

200

Feed demanded (T)

156

156

Antibacterial Peptide demanded (kg)

120

 

4. Feeding management

The management (production management, immune protection, drink and feed process) of cow pasture were same as before.

5. Experimental data

Table 2  Experimental data

Group

Amount of cows

Average milk production

(kg/day/cow)

Amount of cows 

with mastitis

Somatic cells counting 

of cow(million/ml)

Control Group

200

29

12

0.40

Experimental Group

200

31

4

0.50

 

6. Experimental analysis and discussion

(1) Average milk production increased 1kg/cow.

(2) The incidence rate of mastitis were 6% (Control Group) and 4% (Experimental Group) respectively, it means that Antibacterial Peptide reduced the mastitis incidence by 4%.

(3) Theoretically, while the mastitis incidence decreased and milk production increased, the somatic cells counting should be decreased. However, the somatic cells counting of Experimental Group was higher than Control Group. The reason may be that the worker operated improperly in detection.

7. Conclusion

Addition of Antibacterial Peptide in cow’s feed will significantly increase the milk production, and effectively decrease the incidence rate of mastitis.