猪场效益的隐性杀手——猪流感

随着养殖业规模化、集约化、专业化的发展,猪呼吸道疾病的发生和流行日益严重。这将制约养猪业的发展,也给广大养猪户带来巨大的经济损失。结合当前呼吸道综合征的发病特点及规律,有效防控才能真正得到更好的养殖效益。     

连翘酯苷脂质体在雏鸡体内的药动学研究

The study was aimed to evaluate the pharmacokinetics and tissue distribution of forsythiaside liposome in chicks by intravenous administration. The pharmacokinetics of chicks with intravenous administration of forsythiaside liposome and forsythiaside solution 20 mg/kg was studied and the concentrations of forsythiaside in heart, liver, spleen, lung, kidney and plasma were determined by HPLC. The plasma concentration-time curves of forsythiaside liposome and forsythiaside solution were both fit to the two-compartment model and the pharmacokinetic parameters were (1.79±0.050) and （0.11±0.006） h for t_1/2β, (39.95±2.32） and (4.26±0.39) (μg·h)/mL for AUC, (0.56±0.04） and （4.73±0.41） mg/(h·kg) for CLs. Compared with the liposome to the solution, the drug distribution in liver, spleen and lung were obviously elevated. Compared with forsythiaside solution, the forsythiaside liposome could significantly prolong the resident time of forsythiaside in the blood circulating system and could be concentrated at the target tissue rich in the reticuloendothelial system.