Results 21 to 30 of about 45,504 (287)

Environmental effects on progesterone profile measures of dairy cow fertility [PDF]

open access: yes, 2006
Environmental effects on fertility measures early in lactation, such as the interval from calving to first luteal activity (CLA), proportion of samples with luteal activity during the first 60 days after calving (PLA) and interval to first ovulatory ...
B. Berglund   +32 more
core   +1 more source

Heat detection techniques in cattle and buffalo

open access: yesVeterinary World, 2013
Proper heat detection to achieve appropriate timing of insemination is the biggest restriction in attaining high conception rate in dairy herd. The estrus detection is the key issue to be considered on priority basis.
Thakur Krishna Shankar Rao   +4 more
doaj   +1 more source

Ovulation Detection Mechanism-A Microcomputer Based Approach [PDF]

open access: yesResearch Journal of Applied Sciences, 2011
This paper presents a real-time microcomputer-based logger for measuring basal body temperature (BBT). BBT is the normal resting body temperature of a healthy person immediately upon waking in the morning. The temperature for women normally rises after ovulation due to hormonal changes.
Olugbenga K. Ogidan   +2 more
openaire   +2 more sources

Estrous behavior in dairy cows: identification of underlying mechanisms and gene functions [PDF]

open access: yes, 2010
Selection in dairy cattle for a higher milk yield has coincided with declined fertility. One of the factors is reduced expression of estrous behavior. Changes in systems that regulate the estrous behavior could be manifested by altered gene expression ...
Beerda, B.   +3 more
core   +2 more sources

Basal Temperature, Cervical Mucous, and Both Combination as Diagnostic Tools to Detect Ovulation

open access: yesIndonesian Journal of Obstetrics and Gynecology, 2018
Objective: To make basal body temperature examination and cervical mucus as an alternative examination in detecting ovulation, especially in health facilities that do not have ultrasound.
Eka R Gunardi   +2 more
doaj   +1 more source

The "Ram Effect": A "Non-Classical" Mechanism for Inducing LH Surges in Sheep [PDF]

open access: yes, 2016
During spring sheep do not normally ovulate but exposure to a ram can induce ovulation. In some ewes an LH surge is induced immediately after exposure to a ram thus raising questions about the control of this precocious LH surge.
A Caraty   +85 more
core   +9 more sources

Inability of sonography to detect imminent ovulation [PDF]

open access: yesAmerican Journal of Roentgenology, 1989
Sonographic visualization of the cumulus oophorus or of morphologic alterations in the wall of the dominant follicle have been reported to be reliable signs of imminent ovulation when conventional transabdominal sonography is used. To determine if transvaginal sonography could allow a more frequent and confident prediction of imminent ovulation, we ...
D, Zandt-Stastny   +6 more
openaire   +3 more sources

Ovarian reserve and anti-Mullerian hormone (AMH) in mothers of dizygotic twins [PDF]

open access: yes, 2013
This study aimed to explore if natural dizygotic (DZ) twinning is associated with earlier menopause and lower anti-Mullerian hormone (AMH) values. We investigated if advanced biological reproductive aging, which can be responsible for the multiple ...
Boomsma, Dorret I   +4 more
core   +4 more sources

Sincronização da ovulação utilizando FSH em substituição à eCG em cabras

open access: yesArquivo Brasileiro de Medicina Veterinária e Zootecnia, 2011
The effect of substitution of equine chorionic gonadotropin (eCG) by follicle stimulating hormone (FSH) in synchronization protocols of ovulation in dairy goats was evaluated.
R.S. Souza   +9 more
doaj   +1 more source

Risk of cancer after assisted reproduction: a review of the available evidences and guidance to fertility counselors [PDF]

open access: yes, 2018
Infertile women requiring ovarian stimulation and assisted reproduction techniques (ART) are faced with difficult issues. The fear that using hormones could increase their risk of cancer is the most significant.
Codacci-Pisanelli, G   +4 more
core   +1 more source

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