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Production of rats in synchronised batches
- May, D., Hepburn, Dianne, Simpson, Kathleen B.
- Laboratory animals 1975 v.9 no.4 pp. 313-318
- conception rate, copulation, estrous cycle, laboratory animals, neonates, parturition, rats
- Successful synchronisation of copulations and births for the 1st parity permit continued synchrony of parturitions in subsequent parities. Foetal implantation after post-partum copulation was delayed by multiples of the oestrous cycle; both season and number of sucking neonates influenced the time of implantation. Post-weaning matings gave a high conception rate with a parturition spread of 36 hours for 94% of the original group.