The effects of F strain Mycoplasma gallisepticum, Mycoplasma synoviae, and the dual infection in commercial layer hens over a 44-week laying cycle when challenged before beginning of lay. I. Egg production and selected egg quality parameters

Avian Diseases

Volumn 41, Issue 4, 1997, Pages 832-837

  Branton, S L ^a   Lott, B D ^a   May, J D ^a   Maslin, W R ^b   Boyle, C R ^b   Pharr, G T ^b  

^a AGRICULTURAL RESEARCH SERVICE   (United States)

^b MISSISSIPPI STATE UNIVERSITY   (United States)

Author keywords

Chicken; Mixed infection; Organism; Pullet; Vaccination

Indexed keywords

EID: 0031252014     PISSN: 00052086     EISSN: None     Source Type: Journal    
DOI: 10.2307/1592336     Document Type: Article

References (29)

1. Baas, E. J., and D. E. Jasper. Agar block technique for identification of Mycoplasmas by use of fluorescent antibody. Appl. Microbiol. 23:1097-1100. 1972.
2. Branton, S. L., and J. W. Deacon. Egg production, egg weight, eggshell strength, and mortality in three strains of commercial layers vaccinated with F strain Mycoplasma gallisepticum. Avian Dis. 29:832-837. 1985.
3. Branton, S. L., H. Gerlach, and S. H. Kleven. Mycoplasma gallisepticum isolation in layers. Poult. Sci. 63:1917-1919. 1984.
4. Branton, S. L., B. D. Lott, J. W. Deaton, J. M. Hardin, and W. R. Maslin. F strain Mycoplasma gallisepticum vaccination of post-production-peak commercial leghorns and its effect on egg and eggshell quality. Avian Dis. 32:304-307. 1988.
5. Branton, S. L., and J. D. Simmons. Design of a poultry disease isolation facility with programmable environmental control. Appl. Eng. Agric. 8:695-699. 1992.
6. Carpenter, T. E., E. T. Mallinson, K. F. Miller, R. F. Gentry, and L. D. Schwartz. Vaccination with F-strain Mycoplasma gallisepticum to reduce production losses in layer chickens. Avian Dis. 25:404-409. 1981.
7. Cochran, W. G., and G. M. Cox. Analysis of the results of a series of experiments. In: Experimental designs, 2nd ed. John Wiley & Sons, New York, NY. pp. 545-555. 1957.
8. Domermuth, C. H. Vaccination of chickens with Mycoplasma gallisepticum. Avian Dis. 6:412-419. 1962.
9. Evans, R. D., and Y. S. Hafez. Evaluation of a Mycoplasma gallisepticum strain exhibiting reduced virulence for prevention of and control of poultry mycoplasmosis. Avian Dis. 36:197-201. 1992.
10. Fabricant, J., and P. P. Levine. Infection in young chickens for the prevention of egg transmission of Mycoplasma gallisepticum in breeders. World Vet. Congr. 17th Proc. Hannover, Germany. vol. 2, pp. 1469-1474. 1963.
11. Frey, M. C., R. P. Hanson, and D. P. Anderson. A medium for the isolation of avian Mycoplasma. Am. J. Vet. Res. 29:2164-2171. 1968.
12. Glisson, J. R., and S. H. Kleven. Mycoplasma gallisepticum vaccination: effects on egg transmission and egg production. Avian Dis. 28:406-415. 1984.
13. Johnson, A. L. Reproduction in the female. In: Avian physiology, 3rd ed. P. D. Sturkie, ed. Springer-Verlag, New York, NY. p. 408. 1986.
14. Kleven, S. H. Transmissibility of the F strain of Mycoplasma gallisepticum in leghorn chickens. Poult. Sci. 25:1005-1018. 1981.
15. Levisohn, S., C. Sznelwar, and Y. Weisman. Vaccination with Mycoplasma gallisepticum strain F of commercial laying hens in Israel. Refuah Veterinarith. 39:145-153. 1982.
16. Lott, B. D., J. H. Drott, T. H. Vardaman, and F. N. Reece. Effect of Mycoplasma synoviae on egg quality and egg production of broiler breeders. Poult. Sci. 57:309-311. 1978.
17. Luginbuhl, R. E., M. E. Tourtellotte, and M. N. Frazier. Mycoplasma gallisepticum - control by immunization. Ann. N.Y. Acad. Sci. 143:234-238. 1976.
18. Mehta, C. R., and N. R. Patel. A network algorithm for performing Fisher's exact test in rxc contingency tables. J. Am. Stat. Assoc. 78:427-434. 1983.
19. Mohammed, H. O., T. E. Carpenter, and R. Yamamoto. Economic impact of Mycoplasma gallisepticum and M. synoviae in commercial layer flocks. Avian Dis. 31:477-482. 1987.
20. Nalbandov, A. V., and L. E. Card. The problem of blood spots and meat spots in chicken eggs. Poult. Sci. 23:170-180. 1944.
21. Opitz, H. M. Mycoplasma synoviae infection in Maine's egg farms. Avian Dis. 27:324-326. 1983.
22. Reece, F. N., and B. D. Lott. The effect of loading rate on the breaking force, deformation and stiffness modulus of eggs. Poult. Sci. 55:349-358. 1976.
23. Roland, D. A., J. B. Thompson, R. A. Vottle, and R. H. Harms. Studies on the cause, prevention and artificial creation of pimpled egg shells. Poult. Sci. 54:1485-1491. 1975.
24. SAS Institute, Inc. SAS user's guide: statistics edition. SAS Institute, Cary, NC. 1982.
25. Sturkie, P. D. Reproduction in the female and egg production. In: Avian physiology, 3rd ed. Springer-Verlag, New York, NY. p. 317. 1976.
26. Whithear, K. G., Soeripto, K. E. Harrigan, and E. Ghiocas. Immunogenicity of a temperature-sensitive mutant Mycoplasma gallisepticum vaccine. Aust. Vet. J. 67:168-174. 1990.
27. Wilson, W. O., F. B. Mather, E. Bennett, and A. E. Woodard. Association between blood spots in eggs and ambient temperature. Poult. Sci. 43:1607-1608. 1964.
28. Woolson, R. F. Comparing more than two groups of observations: chi-square and related procedures. In: Statistical methods for the analysis of biomedical data. V. Barnett, R. A. Bradley, J. S. Hunter, D. G. Kendall, R. G. Miller, Jr., A. F. M. Smith, S. M. Stigler, and G. S. Watson, eds. John Wiley & Sons, New York, NY. pp. 390-395. 1989.
29. Yoder, H. W. Mycoplasma gallisepticum infections. In: Diseases of poultry, 9th ed. B. W. Calnek, H. J. Barnes, C. W. Beard, W. M. Reid, and H. W. Yoder, Jr., eds. Iowa State University Press, Ames, IA. pp. 198-212. 1991.