Chong Tau Yeng, General Manager of Gesing Group S, Malaysia

Transcription

1 Field experience with the use of vector vaccine Vectormune FP-MG, in Broiler Breeder farm in Malaysia.. Chong Tau Yeng, General Manager of Gesing Group S, Malaysia

2 GESING GROUP SDN. BHD. Year 1997 ~ Colour breeder farm Breed : Sasso SA51N

3 SASSO : SA 51N

4 *Pipped Embryo Analysis for Mycoplasma % Air Sac Lesion Evaluation Vertical Transmission 0% Mycoplasma Free No problem 1-10% Regular Few problem 11-20% Poor Problem > 20% Very Poor Very serious * Analysis incorporated from Elanco Animal Health

5 Antibiotic Flushing Program (Colour Broiler Breeder Farm) Age (week) w21 w24 w28 w32 w36 w42 Antibiotic -TYLOSIN 200ppm 200ppm 200ppm 200ppm 200ppm 200ppm

6 Pipped Embryo Analysis for Mycoplasma Breed : SASSO SA51N Age : 33 WEEKS % Positivity of Airsacs: 45%

7 Year 2011 Starting of New Project White Broiler Breeder Farm

8 Mycoplasma Prevention - Antibiotic? OR Vaccine? Antibiotic? Overall Air Sac lesion not satisfy Live Vaccine : F-Strain, TS-11 OR 6/85? Not practical Not compatible for antibiotic application to control stress or other diseases Vector Vaccine : Vectormune FP-MG? Compatible with the use of antibiotic Efficacy? Trial in farm

9 Objectives 1. To evaluate the efficacy of VECTORMUNE FP-MG compare to Antibiotic treatment in: MG protection Vertical Transmission to DOC 2. To determine economic benefits of VECTORMUNE FP-MG compare to Antibiotic treatment.

10 Trial Details Location : Johor Number of birds: 20,000 Intake date: 8 th July 2011 End of trial: October 2012 Intake Group Breed No. of birds (intake) MG Treatment Program 8 th July 11 Flock 1 Cobb 9,457 Antibiotic Flock 2 Cobb 9,457 Vectormune FP - MG

11 Vectormune FP-MG Group Vaccination Program Vaccination of Vectormune FP-MG Day Route: Wing Web No other live or killed MG vaccines were given

12 Antibiotic Group - Flushing Program - Age (wk) Dosage Duration (days) ppm ppm ppm ppm ppm ppm ppm 7

13 Summary of Trial Groups 21 days 21wk 24wks 26wks 28wks 32 wks 36 wks 40 wks VTM FP-MG Group Wing Web Antibiotic Group 200 ppm 7 days 200 ppm 7 days 200 ppm 7 days 200 ppm 7 days 200 ppm 7 days 200 ppm 7 days 200 ppm 7 days

14 Overall Weekly Mortality + Culling (Female) 9,00% Cumulative Female Mortality + Culling % at Pullet and Laying Stage Mortality + Culling % 8,50% 8,00% 7,50% 7,00% 6,50% 8,82% 8,40% Antibiotic group VTM FP-MG group 6,00% 5,50% 6,58% 6,53% 5,00% Pullet Stage (1-23 wks) Laying Stage (24-62 wks)

15 Overall Egg Production % Until 61 wks Standard VTM FP MG group Antibiotic group DIFF (VTM Abiotic) Average Egg Production % 65% 65% 61% +4% Total Egg HH

16 Overall Hatching Eggs % Until 61 wks Standard VTM FP MG group Antibiotic group DIFF (VTM Abiotic) Hatching Eggs HH

17 Overall Hatchability % Female : Male ratio Setter turning problem high unhatch

18 Overall Saleable Chicks % Chiller problem Setter turning problem high unhatch Female : Male ratio Until 61 wks Standard VTM FP MG group Antibiotic group DIFF (VTM Abiotic) Saleable Chicks HH Total Saleable Chicks 990, , ,029

19 MG ELISA (Mean) Titer - IDEXX Positive level >1,100 unit Based on Mean titer, at wk 55, Antibiotic and VTM FP-MG group turned positive with 1,197 and 1,205 ELISA unit respectively.

20 % Positivity of MG ELISA Titer At wk24 and 43, each represent only 4% positivity of the overall samples taken. Hence, this may not indicate the overall flock status. At wk 53, % of seropositive in VTM FP-MG group remained 4% while in Antibiotic group, % of seropositive increased to 8%, this may indicate early sign of seroconversion due to infection few wks earlier. Following this, we could see at wk 55, 40% and 53% respectively in Antibiotic and VTM FP-MG group turned positive, hence confirm the flocks were infected with MG probably at wks (assuming seroconversion of MG takes 6 wks)

21 PCR Result Suspected age where flock may infected with MG (based on MG serology) Age of Sampling Sample VTM FP MG group Antibiotic group WK 27 WK 31 WK 35 WK 39 WK 43 WK 48 Wk 53 WK 61 DOC Neg Neg PIP Neg Neg DOC Neg Neg PIP Neg Neg DOC Neg Neg PIP Neg Neg DOC Neg Neg PIP Neg Neg DOC Neg Neg PIP Neg Neg DOC Neg Neg PIP Neg Neg DOC Neg Neg PIP Neg Neg DOC Neg Neg PIP Neg Neg Studies shows that possible Vertical transmission (transovarian/ Egg Transmission) are: 3 6 wk Post Infection : ~25-50% of eggs 8 15 wk Post Infection :~3 5% Based on serology, assuming the infection was in wk 48-49, hence, important to see that PCR result of DOC and PIP at wk 48, wk 53 and wk 61 in VTM FP-MG group is NEGATIVE.

22 Pipped Embryo Analysis Result Age of sampling VTM FP-MG Group Air Sac Lesion % Antibiotic Group * 30 pipped embryo per sampling

23 Production Figure Summary Until 61 wks Standard VTM FP MG group Antibiotic group Hen housed at 19 wks old 7,994 7,954 DIFF (VTM Abiotic) M+C Pullet (1 23 wks) 5.00% 6.53% 6.58 % % M+ C Laying stage (24 61 wks) 6.65% 8.40% 8.82% % Total Egg HH Hatching Eggs HH Saleable Chicks HH Total Salable Chicks 990, , ,029

24 Cost Benefit Calculation (USD) VTM FP MG group Antibiotic group DIFF (VTM Abiotic) Hen housed at 19 wks old 7,994 7, Total Salable Chicks 990, , ,029 Cost of VTM FP-MG per hen ($) Cost of Antibiotic per hen ($) $ Total cost of Treatment ($) 1, , Gross profit from Saleable chicks ($) 385, , $ 30,401 Gross Profit - Treatment cost ($) 384, , $ 33,623 Gross Profit per hen ($) $ 3.99 * Exchange rate: 1 USD = RM 3.08 DOC price = 0.4 USD

25 Conclusion Vectormune FP-MG: is proved to be effective in protecting broiler breeder against MG and preventing Vertical Transmission to DOC. gave better Production performance and Economic Value as compare to Antibiotic treatment. is a perfect alternative for Antibiotic in prevention of MG.

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