Etude des particularités de la poule Fayoumi. III. Ponte, caractéristiques des æufs, efficacité alimentaire et paramètres physiologiques de poules Fayoumi, Rhode-Island et F1 en batteries

International audienc

Biochemical and behavioral effects of boldine and glaucine on dopamine systems

The aporphine alkaloids boldine and glaucine have been reported to show 'neuroleptic-like' actions in mice, suggesting that they may act as dopamine antagonists. We have found that in vitro boldine displaces specific striatal [3H]-SCH 23390 binding with IC50 = 0.4 μM and [3H]-raclopride binding with IC50 = 0.5 μM, while the affinities of glaucine at the same sites are an order of magnitude lower. In vivo, however, 40 mg/kg boldine (IP) did not modify specific striatal [3H]-raclopride binding and only decreased [3H]-SCH 23390 binding by 25%. On the other hand, 40 mg/kg glaucine (IP) displaced both radioligands by about 50%. Behaviors (climbing, sniffing, grooming) elicited in mice by apomorphine (0.75 mg/kg SC) were not modified by boldine at doses up to 40 mg/kg (IP) but were almost completely abolished by 40 mg/kg glaucine (IP). In the apomorphine-induced (0.1 mg/kg SC) rat yawning and penile erection model, boldine and glaucine appeared to be similarly effective, inhibiting both beh

Etude des particularités de la poule Fayoumi. III. Ponte, caractéristiques des œufs, efficacité alimentaire et paramètres physiologiques de poules Fayoumi, Rhode-Island et F1 en batteries

International audienc

Preventing on-farm infections through genetic selection

International audienc

Comparison of resistance of different poultry lines to intramuscular or oral inoculation by Salmonella enteritidis

International audienc