Search Results - "Sales, J.N.S"
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Timing of insemination and fertility in dairy and beef cattle receiving timed artificial insemination using sex-sorted sperm
Published in Theriogenology (01-08-2011)“…The objective was to evaluate the effects of timing of insemination and type of semen in cattle subjected to timed artificial insemination (TAI). In Experiment…”
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Effects of a high-energy diet on oocyte quality and in vitro embryo production in Bos indicus and Bos taurus cows
Published in Journal of dairy science (01-05-2015)“…The effects of different dietary energy levels [100 and 170% for maintenance (M) and high energy (1.7M), respectively] on metabolic, endocrine, and…”
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3
Importance of estrus on pregnancy per insemination in suckled Bos indicus cows submitted to estradiol/progesterone-based timed insemination protocols
Published in Theriogenology (01-08-2011)“…The objective was to evaluate the effect of estrus occurrence (based on removal of tail-head marks) on ovarian responses and pregnancy per AI (P/AI; 30 d after…”
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4
Effects of eCG are more pronounced in primiparous than multiparous Bos indicus cows submitted to a timed artificial insemination protocol
Published in Theriogenology (01-12-2016)“…The effects of eCG on follicular growth, ovulation, and pregnancy per artificial insemination (P/AI) in multiparous and primiparous Bos indicus beef cows…”
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Equine chorionic gonadotropin improves the efficacy of a progestin-based fixed-time artificial insemination protocol in Nelore ( Bos indicus) heifers
Published in Animal reproduction science (01-04-2010)“…A total of 177 Nelore heifers were examined by ultrasonography to determine the presence or absence of a corpus luteum (CL) and received a 3 mg norgestomet ear…”
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Fixed-time AI protocols replacing eCG with a single dose of FSH were less effective in stimulating follicular growth, ovulation, and fertility in suckled-anestrus Nelore beef cows
Published in Animal reproduction science (01-03-2011)“…The aim of the present study was to evaluate the effects of a single treatment with FSH on diameter of the largest follicle and on conception rates of suckled…”
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Effect of different doses of equine chorionic gonadotropin on follicular and luteal dynamics and P/AI of high-producing Holstein cows
Published in Animal reproduction science (01-07-2013)“…The hypotheses of this study were (1) that the administration of 400IU eCG in a TAI protocol would increase ovarian follicular growth and diameter of the…”
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Induction of ovarian follicular wave emergence and ovulation in progestin-based timed artificial insemination protocols for Bos indicus cattle
Published in Animal reproduction science (01-12-2011)“…The present study aimed to evaluate the efficacy of different inducers of new follicular wave emergence (FWE) and ovulation in fixed-time artificial…”
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Although it induces synchronized ovulation, hCG reduces the fertility of Santa Ines ewes submitted to TAI
Published in Arquivo brasileiro de medicina veterinária e zootecnia (01-01-2018)“…ABSTRACT The aim of this study was to evaluate hCG treatment on ovarian response and on pregnancy rate using a 9-day oestrus synchronization protocol in Santa…”
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Manipulation of the proestrous by exogenous gonadotropin and estradiol during a timed artificial insemination protocol in suckled Bos indicus beef cows
Published in Livestock science (01-06-2013)“…The objective of this study was to evaluate the effects of an exogenous administration of equine chorionic gonadotrophin (eCG) and eCG plus estradiol cypionate…”
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11
Timed embryo transfer programs for management of donor and recipient cattle
Published in Theriogenology (01-12-2011)“…Currently, timed ovulation induction and fixed-time artificial insemination (FTAI) in superstimulated donors and synchronization protocols for fixed-time…”
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Embryo production and quality of Holstein heifers and cows supplemented with β-carotene and tocopherol
Published in Animal reproduction science (01-06-2008)“…The hypothesis was that the intramuscular injection (i.m.) of β-carotene associated to tocopherol improves cow ( n = 86) and heifer ( n = 91) embryo production…”
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Exposure to progesterone before an ovulation synchronization protocol increases the follicular diameter and fertility of multiparous suckled Bos taurus cows
Published in Theriogenology (01-04-2024)“…The objective of this study was to evaluate the effect of administering injectable progesterone (P4i) before a timed artificial insemination (TAI) protocol on…”
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Use of injectable progesterone at the beginning of the TAI protocol is not necessary in super-early resynchronization started 14 days after artificial insemination in Bos indicus beef heifers
Published in Theriogenology (01-12-2022)“…In a protocol for the resynchronization of ovulation starting 14 days (D14) after timed artificial insemination, the effects of short-action injectable…”
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Effects of two estradiol esters (benzoate and cypionate) on the induction of synchronized ovulations in Bos indicus cows submitted to a timed artificial insemination protocol
Published in Theriogenology (01-08-2012)“…The effects of estradiol benzoate (EB) and estradiol cypionate (EC) on induction of ovulation after a synchronized LH surge and on fertility of Bos indicus…”
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Exposure to progesterone previous to the protocol of ovulation synchronization increases the follicular diameter and the fertility of suckled Bos indicus cows
Published in Theriogenology (01-08-2018)“…The objective was to evaluate the effect of injectable progesterone previous to the timed artificial insemination (TAI) protocol on follicular growth,…”
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Effect of induction of ovulation with estradiol benzoate at P4 device removal on ovulation rate and fertility in Bos indicus cows submitted to a TAI protocol
Published in Animal reproduction science (01-10-2019)“…This study aimed to minimize the number of times cattle need to be confined during protocols for TAI in beef cows treated for induction of ovulation with EB at…”
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Effects of eCG and FSH in timed artificial insemination treatment regimens on estrous expression and pregnancy rates in primiparous and multiparous Bos indicus cows
Published in Animal reproduction science (01-05-2021)“…•Unlike eCG, FSH does not promote follicular growth in beef cows submitted to TAI.•FSH failed to increase P/AI, particularly in primiparous cows.•eCG and FSH…”
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Nuclear maturation kinetics and in vitro fertilization of immature bovine oocytes injected into pre-ovulatory follicles
Published in Theriogenology (01-05-2021)“…The maturation kinetics and in vitro fertilization of immature bovine oocytes injected by the intra-follicular oocyte injection (IFOT) technique into…”
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Synchronization treatments previous to natural breeding anticipate and improve the pregnancy rate of postpartum primiparous beef cows
Published in Theriogenology (01-07-2018)“…Timed AI has become a potential tool to bypass postpartum acyclicity, yet only a small percentage of the world bovine herd is inseminated. Most females are…”
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