Branton S L, Lott B D, Deaton J W, Hardin J M, Maslin W R
U.S. Department of Agriculture, ARS, South Central Poultry Research Laboratory, Mississippi State, Mississippi 39762.
Avian Dis. 1988 Apr-Jun;32(2):304-7.
Forty-five-week-old commercial leghorns negative for antibodies to Mycoplasma gallisepticum (MG) and M. synoviae were vaccinated with high-passage F strain MG (FMG). Hens were confined in modified Horsfall-Bauer isolation units through 60 weeks of age. Egg production (% hen day) and parameters of egg and eggshell quality were monitored, including egg weight, eggshell strength, Haugh unit score, pimpling, and blood/meat spot incidence. Egg production was significantly lower (P less than 0.05) for FMG vaccinates than controls (down 5.76% and 5.80% in Trials 1 and 2, respectively). However, vaccinates and controls did not differ significantly in eggshell strength, shell thickness, pimpling, or blood/meat spot incidence. Haugh unit scores were significantly (P less than 0.05) greater for FMG vaccinates. At necropsy, all reproductive tracts appeared grossly normal. These studies suggest that high-passage FMG vaccination of post-production-peak hens does not adversely affect oviduct function.
对45周龄、鸡毒支原体（MG）和滑液支原体抗体呈阴性的商品来航鸡接种高传代F株MG（FMG）。母鸡被关在改良的霍斯福尔-鲍尔隔离单元中直至60周龄。监测产蛋率（母鸡日产蛋率）以及蛋和蛋壳质量参数，包括蛋重、蛋壳强度、哈夫单位评分、麻点和血/肉斑发生率。接种FMG的鸡的产蛋率显著低于对照组（P<0.05）（试验1和试验2中分别下降5.76%和5.80%）。然而，接种组和对照组在蛋壳强度、蛋壳厚度、麻点或血/肉斑发生率方面没有显著差异。接种FMG的鸡的哈夫单位评分显著更高（P<0.05）。尸检时，所有生殖道外观大体正常。这些研究表明，对产蛋高峰期后的母鸡接种高传代FMG不会对输卵管功能产生不利影响。
