The immobilisation of cattle and related species

Dm, Jones

doi:10.1136/vr.89.6.173

Cited by 4 publications

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“…No cases of premature births, retained placentas or periparturient disorders were recorded. Free-ranging, excited or aggressive cattle have an increased tolerance to xylazine and doses up to 1.6 mg/kg of xylazine have been used for capture and immobilization of such individuals (Jones, 1971;Bauditz, 1972;Hopkins, 1972;Stewart, 1972;Leber, 1975). The mechanisms for this increased tolerance are not known, although in horses a high plasma adrenaline concentration, indicative of a high level of stress, was correlated with a reduced sedative effect of detomidine, another a2-adrenoceptor agonist (Raekallio et al, 1992).…”

Section: Resultsmentioning

confidence: 99%

Chemical capture of free-ranging cattle: Immobilization with xylazine or medetomidine, and reversal with atipamezole

Arnemo¹,

Søli

1993

Vet Res Commun

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Twenty-nine free-ranging Norwegian cattle were captured with xylazine (n = 20) or medetomidine (n = 9) using a tranquilizing gun, and the time from darting to recumbency (induction time) was recorded. Twenty-eight animals were given atipamezole IV 15-100 min after darting, and the effects of the antagonist were evaluated. Blood samples (n = 19) for haematology and serum chemistry were collected within 10 min after immobilization was induced. Xylazine (0.55 +/- 0.18 mg/kg; mean +/- SD; n = 18) or medetomidine-HCl (0.039 +/- 0.10 mg/kg; n = 8) induced complete immobilization after a single darting with sternal or lateral recumbency, the induction times being 9.6 +/- 3.8 and 12.0 +/- 6.8 min, respectively. No difference in the clinical effects of the two drugs was observed. Rapid reversal was achieved with 0.057 +/- 0.017 and 0.077 +/- 0.019 mg/kg of atipamezole-HCl in xylazine- and medetomidine-treated animals, respectively. All the animals stood within 2 min after IV administration of the antagonist. Seven animals showed signs of excitement shortly after reversal, but these side-effects were of brief duration. Heavy resedation with relapse into recumbency was seen 3-4 h after reversal in two cows captured with xylazine, while moderate resedation was observed in two medetomidine-treated animals 2 h after reversal. Except for the plasma glucose concentration, which was elevated in both xylazine- and medetomidine-treated animals, the mean values of the haematological and plasma chemical parameters were within the reference ranges established for Norwegian cattle.(ABSTRACT TRUNCATED AT 250 WORDS)

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Section: Resultsmentioning

confidence: 99%