Effect of immunization on reproducvive performance, embryo quality and progesterone in Rasa Aragonesa ewes actively immunized against androstenedione or passively immunized against testosterone.

@article{Alabart1991EffectOI,
  title={Effect of immunization on reproducvive performance, embryo quality and progesterone in Rasa Aragonesa ewes actively immunized against androstenedione or passively immunized against testosterone.},
  author={Jos{\'e} Luis Alabart and Jos{\'e} Roger Folch and Mar{\'i}a Jes{\'u}s Cocero and Yves Cogni{\'e}},
  journal={Theriogenology},
  year={1991},
  volume={35 4},
  pages={799-813}
}
A total of 217 Rasa Aragonesa ewes were used to test two immunization treatments: 1.Active immunization against androstenedione: ewes immunized in previous matings (androstenedione, reimmunized; AR groups, n=58) or not (first immunization; AF groups n=64) were boosted either 2 or 4 wk before mating. 2.Passive immunization against testosterone: antisera were injected either at sponge withdrawal (zero time; T0 group, n=21) or 1 wk previously (Tl group, n=22). We used 52 ewes as controls (C group… CONTINUE READING

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