(n.) An annual composite plant of the Mississippi valley (Senecio lobatus).
Example Sentences:
Ragwort
Definition:
(n.) A name given to several species of the composite genus Senecio.
Example Sentences:
(1) The poisonous principles in tansy ragwort are pyrrolizidine alkaloids, which cause gradual alteration and necrosis of liver cells with replacement by fibrous tissue.
(2) In control rats, most fecal vitamin A was excreted in the first 24 h post-dosing, while in tansy ragwort-fed animals, the excretion was delayed, suggesting a possible effect of PA on gut motility.
(3) The effect of feeding a diet containing 5% tansy ragwort (TR) (Senecio jacobaea), a poisonous plant containing pyrrolizidine alkaloids (PA), on the blood and liver levels of copper, zinc, iron and vitamin A in broiler chicks was examined.
(4) Like his colleague Tory MP Nicholas Soames, who in 2009 called the "scourge" of ragwort a national "shame", Benyon struck back, saying his critics were being "unnecessarily aggressive", and that he wasn't advocating ethnic cleansing of ragwort but that he wanted to deal with "a severe infestation of a poisonous plant".
(5) Calves and cows (n = 45) were fed daily doses of dried prebud tansy ragwort (Senecio jacobaea) derived from a single plant collection made in Tillamook, Oregon.
(6) There is a chapter on ragwort in one of the standard textbooks," wrote another.
(7) In group 1, 4 calves were continuously fed dried tansy ragwort mixed in a pelleted feed at a 5% concentration by dry weight until terminal liver disease developed.
(8) The hepatotoxic alkaloids known to occur in tansy ragwort (Senecio jacobaea L.) are also present in honey produced from the nectar of this species.
(9) Twenty-five 1-week-old male chicks were fed for 6 weeks on a standard diet incorporating 7% dried and ground ragwort (Senecio jacobea).
(11) It is thus apparent that the disease can be confused clinically with many others, and tansy ragwort poisoning should be considered in animals exhibiting ascites, diarrhea and rectal prolapse.
(12) Selected case reports from closely controlled experimental feedings of Senecio jacobaea (tansy ragwort), S longilobus (threadleaf groundsel) and S riddellii (Riddell's groundsel) to cattle are presented to show that all 3 of these pyrrolizidine alkaloid-containing plants may not necessarily induce proximate toxicity, but may cause typical signs and death many months after the plants are ingested.
(13) And they attacked his ecological knowledge: "At least 30 insect and 14 fungi species are entirely reliant on ragwort, and about a third of the insects are scarce or rare.
(14) Landowners who wish to control ragwort face an impossible task when roadside verges are dominated by it to an extent I cannot remember in the past.
(15) Crotolaria spp, the ragwort (Senecia jacobaea), the lantana spp.
(16) The former Conservative cabinet minister Lord Tebbit has said young unemployed people should be made to pull up ragwort from roadside verges in return for benefits.
(17) The animal's tolerance for the plant was dependent on the amount of tansy ragwort fed, and the duration of the dosing period.
(18) In two experiments, the effect of feeding the pyrrolizidine alkaloid (PA)-containing plant tansy ragwort (Senecio jacobaea) on the metabolism of vitamin A in rats was examined.
(19) As for East Anglia’s ragwort problem, I suggest that instead of press-ganging our young, we might start making our legion of tax evaders pay it forward.
(20) Ragwort Facebook Twitter Pinterest Caterpillars on ragwort.