猪氟烷测验的研究

STUDY ON HALOTHANE TEST OF PIG

271 pigs (231 ES herd and 40 Siger) were used to study the standards of determ-ination and parameters for halothane test by five programes. It was demonstrated thathalothane positive reaction was determined by the sustained, increased rigidity of muscleon the 1-4 limbs. For more than 40 seconds the parameters which met the halothanetest were 4% halothane concentration and 3L/min. Flow of oxygen. An overdose ofhalothane was main cause of death of halothane-positive pigs under high ambient envir-onments. The slaughtering results of 100 testing pigs showed that 90% or 17 of 19 ha-lothane-positive pigs were in ES herd (87.5% in Sger). The trial implementatingresults for "Regulation of Operation for Halothane Test in pig" indicated that the pigletsfrom halothane-positive parents exhibited halothane-positive reaction (34 piglets of 51itters)