Superstimulation of ovarian follicular development in beef cattle with a single intramuscular injection of Folltropin-V.

TRÍBULO A.; ROGAN D.; TRÍBULO H.; R. TRÍBULO; ALASINO R.V.; BELTRAMO D.M.; BIANCO I.D.; MAPLETOFT R.J.; BÓ, G.A.

ELSEVIER SCIENCE BV

Lugar: Amsterdam; Año: 2011 vol. 129 p. 7 - 7

p { margin-bottom: 0.21cm; } The need to inject FSH twice daily for superstimulation of ovarian follicular developmentin cattle necessitates frequent attention by farm-personnel and increases the possibilityof failures due to mishandling and errors in administration of treatments. A series of three experiments were designed to evaluate the feasibility of superstimulation in beef cattle with a single intramuscular (IM) injection of Folltropin-V diluted in a hyaluronan-based slow-release formulation (SRF). In Experiment 1, cows were assigned to one of three treatment groups to compare two methods of injection as compared to the twice daily IM injection protocol. Superovulatory response of cows (n = 6) treated with twice daily IM injections over 4 days (Control) was greater than of cows treated with a single subcutaneous (SC) injection in SRF (n = 6), while superovulatory response of cows treated with a