Early resynchronization of follicular wave emergence among Nelore cattle using injectable and intravaginal progesterone for three timed artificial inseminations

Gilmar Arantes Ataide Junior,Anderson Kloster, Émerson Guimarães de Moraes,Igor Garcia Motta, Izaias Claro Junior,José Luiz M Vasconcelos,Priscila Assis Ferraz,Guilherme de Paula Nogueira,Guilherme Pugliesi

Animal Reproduction Science（2021）

Cited 4|Views4

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Abstract

•Plasma P4 concentrations are increased by a 100 mg short-acting injectable P4 (iP4) treatment 14 d after TAI.•Follicular wave emergence is not altered by an intravaginal device plus iP4 during diestrus in cattle.•Size of dominant follicle is greater and luteolysis is earlier in Nelore suckled cows than heifers.•Pregnancy rates is enhanced in Nelore cattle resynchronized with an intravaginal P4 device plus 100 mg iP4.

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Key words

Doppler ultrasonography,Reproductive efficiency,Resynchronization,Short-acting progesterone

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