Transcervical artificial insemination of romney ewes : a thesis presented in partial fulfilment of the requirements for the degree of master of agricultural science in animal science at massey university... AI was performed between 48 and 52 h after synchronisation of oestrus with progesterone impregnated CIDRs....
Use of stochastic simulation to evaluate the reduction in methane emissions and improvement in reproductive efficiency from routine hormonal interventions in dairy herds... Four scenarios of differing first insemination management were simulated for each herd using the same theoretical cows: A baseline scenario based on breeding from observed oestrus only, synchronisation of oestrus for pre-set first insemination using 2 methods, and a regime using prostaglandin treatments followed by first insemination to observed oestrus....
Research article use of stochastic simulation to evaluate the reduction in methane emissions and improvement in reproductive efficiency from routine hormonal interventions in dairy herds... Four scenarios of differing first insemination management were simu-lated for each herd using the same theoretical cows: A baseline scenario based on breeding from observed oestrus only, synchronisation of oestrus for pre-set first insemination using 2 methods, and a regime using prostaglandin treatments followed by first insemination to ob-served oestrus....
Synchronisation of oestrus in dairy cows using progesterone administered by "controlled internal drug release " (cidr) devices... These results demonstrate that the CIDR is an effective device for synchronisation of oestrus in dairy cows, and when used in combination with luteolytic prostaglandins this synchronisation is sufficiently precise for successful A.I....
