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-r ' <br />-6- ._. N204 Shallow Foothill NLRA 49 <br />Effect and symptoms ' <br />The plants contain cyanogenetic glycoside which bacteria and en ymes <br />converts to a hydrocyanic (prussic) acid. A lethal dose will o cur when the <br />animal consumes 0.25 percent of the body weight. The poison is not <br />cumulative and animals will recover. The release of the toxin s related to <br />consumption of water which prompts rapid release of the toxin. <br />Illness may begin within five minutes after plant is eaten. De <br />within IS minutes. Extreme salivation, labored breathing, must <br />incoordination, bloating, con wlsions, and death due co respira <br />Blood will appear bright red and lungs will be congested. Remo <br />animals from area and treat with sodium nitrate and sodium thin <br />intravenously. Unaffected animals should also be removed. <br />Season <br />Common Scientific Name Dangerous <br />Name <br />Drummond <br />milkvetch <br />Astragalus drummondii <br />Drummond milk- <br />vetch has not <br />been confitmec <br />as being poise <br />ous to Iivest< <br />Xoweve r, it i~ <br />listed as beii <br />suspected of <br />toxicity. <br />Common <br />Name <br />variable senecio <br />Effect and symptoms <br />Scientific Name <br />Senecio mutabiIis <br />Sea son <br />Dangerous <br />when palatable <br />forage is <br />scarce. <br />Symptoms are progressive and effects are cumulative. Weakness, <br />darkly stained urine may be observed. Animals die quickly or wa <br />aimlessly. Adequate feed or supplement during the spring will <br />hazard. <br />th occurs <br />e tremors, <br />ory failure. <br />e affected <br />alfate <br />Animals <br />Affected <br />Potent- <br />ia11 y <br />cattle, <br />horses <br />and sheep <br />Animal s <br />Affected <br />mostly cattle <br />and horses; <br />sheep are <br />usually not <br />affected if <br />fed on sup- <br />plement during <br />the dry range <br />conditions in <br />the spring <br />diarrhea, and <br />ender <br />reduce the <br /> <br />`i`l l <br />'~1 <br />