Effect Evaluation Of "Fengcaoling Sustained Release Pill" Prevening Sheep From Oxytropis Poisoning And The Field Efficacy Trial

Oxytropis and Astragalus species known as Locoweeds are responsible for Locoism,which are the most serious poisonous weeds toward farming industry in worldwide.Locoweeds in China are mainly distributed on vast grassland,exceeding 1100 million hectares,in northwest,southwest and north China,which become one of the most serious three poisonous weeds in China.Ingesting Locoweed can result lots of livestocks death,female sterility,abortion,fetal abnormality and male yeld. The extending Locoweed decrease the utilization rate of grassland and result huge loss toward livestocks industry.Studies of controling livestocks Locoism are reported in overseas and China,but the effective and recipient preventing methods are not been reported up to date.In this paper,evaluating the effects of"Fengcaoling Sustained Release Pill"preventing sheep from Oxytropis poisoning and making the field efficacy trial of preventing sheep or goats from Locoweed poisoning in Qinghai province and Inner Mongolia.The results as follows.1.Locoweed harm investigation in Alasan League of Inner MongoliaThe species and distribution areas of Locoweed in Alasan League of Inner Mongolia are investigated by literature review and field survey.It shows that there are 7 species Locoweeds including 3 species of Oxytropis and 4 species of Astragalus,which distribute beyond 139.33 million hectares.The dominating harmful species are O.flabra and A.variabilis,reporting firstly A.hamiensis as Locoweed.2.Study on the optimum pH of alpha-mannosidase activity test from serum in sheepThe activity of serum alpha-mannosidase from sheep is determinated in different pH by colorimetry,and calculate the coefficient of variation within groups.It shows that the highest alpha-mannosidase activity is tested in pH 3.8,and accordingly has the smallest coefficient of variation and primarily presumed that pH 3.8 is the optimum pH of the test of alpha-mannosidase activity.The Standard Curve of p-nitrophenol solution is maken in buffer solution of pH 10.14.3.Effect of"Fengcaoling Sustained Release Pill"preventing sheep from Oxytropis poisoningSixteen sheep were randomly divided into four groups,and three test groups were separately administratived"Fengcaoling Sustained Release Pill"at dosage of one pill,two pills and three pills per sheep,the control group was not administratived.Signs of Oxytropis...