Bioactivity of ovulation inducing factor (or nerve growth factor) in bovine seminal plasma and its effects on ovarian function in cattle

Theriogenology
P TribuloGregg P Adams

Abstract

To understand the role of ovulation-inducing factor (or nerve growth factor) (OIF [NGF]) in bovine seminal plasma, we (1) used an in vivo llama bioassay to test the hypothesis that bovine seminal plasma induces ovulation and CL development in llamas similar to that of llama seminal plasma when the dose of seminal plasma is adjusted to ovulation-inducing factor content (experiment 1) and (2) determined the effect of bovine seminal plasma on the interval to ovulation and luteal development in heifers (experiment 2). Within species, seminal plasma was pooled (n = 160 bulls, n = 4 llamas), and the volume of seminal plasma used for treatment was adjusted to a total dose of 250 μg of ovulation-inducing factor. In experiment 1, mature female llamas were assigned randomly to four groups and treated intramuscularly with either 10 mL of PBS (negative control, n = 5), 50-μg GnRH (positive control, n = 5), 6-mL of llama seminal plasma (n = 6), or 12 mL of bull seminal plasma (n = 6). Ovulation and CL development were monitored by transrectal ultrasonography. In experiment 2, beef heifers were given a luteolytic dose of prostaglandin followed by 25-mg porcine LH (pLH) 12 hours later to induce ovulation. Heifers were assigned randomly to thr...Continue Reading

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Citations

Nov 1, 2016·Reproduction : the Official Journal of the Society for the Study of Fertility·John J Bromfield
Oct 21, 2016·Reproduction in Domestic Animals = Zuchthygiene·G P AdamsR A Carrasco
Feb 15, 2019·Reproduction : the Official Journal of the Society for the Study of Fertility·Marcelo H RattoGregg P Adams
Jan 31, 2020·Physiological Reviews·John E Schjenken, Sarah A Robertson
Nov 14, 2019·Reproductive Biology and Endocrinology : RB&E·Cesare CastelliniMario Rende
Sep 6, 2020·Animals : an Open Access Journal From MDPI·Margherita MaranesiCecilia Dall'Aglio
May 1, 2020·Andrologia·Fernanda Gabriela FumusoMaria Ignacia Carretero
Feb 24, 2020·Theriogenology·Fabio S LimaIgor F Canisso
Feb 15, 2021·Theriogenology·Rodrigo A CarrascoGregg P Adams
Jan 29, 2021·Animals : an Open Access Journal From MDPI·Massimo ZeraniMargherita Maranesi
May 1, 2021·International Journal of Molecular Sciences·Marina Ramal-SanchezBarbara Barboni

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