Results 151 to 160 of about 81,652 (368)
Litter loss triggers estrus in a nonsocial seasonal breeder
Ecology and Evolution, 2014 Sexually selected infanticide (SSI) is often presumed to be rare among seasonal breeders, because it would require a near immediate return to estrus after the loss of an entire litter during the mating season.
S. Steyaert, J. Swenson, A. Zedrosser
semanticscholar +1 more source
Multiple litters in the California ground squirrel, Spermophilus beecheyi fisheri, in Tulare County [PDF]
, 1980 From the fall of 1977 through late spring of 1979, periodic examination of female ground squirrels in the low oak woodlands of southern Tulare County revealed that as much as 20 percent of the reproductively active females bred a second time within a ...
Lamunyon, Thomas K., Simpson, George L.
core
Comparison of the Effects of Early Pregnancy with Human Interferon, Alpha 2 (IFNA2), on Gene Expression in Bovine Endometrium [PDF]
, 2012 Interferon tau (IFNT), a type I IFN similar to alpha IFNs (IFNA), is the pregnancy recognition signal produced by the ruminant conceptus. To elucidate specific effects of bovine IFNT and of other conceptus-derived factors, endometrial gene expression ...
Bauersachs, Stefan +10 more
core +1 more source
Biology of Reproduction, 2014 Cervico-vaginal fluid (CVF) plays significant roles in coitus, sperm transport, and implantation. It is believed to be a good noninvasive biomarker for various diagnostic purposes.
S. Muthukumar +6 more
semanticscholar +1 more source
Theriogenology, 1992 Mature, cyclic Ethiopian Menze ewes (n=72) were used in this study. They were divided into 6 equal groups in a 2x3 factorial experimental design. Estrus and ovulation were synchronized in all ewes using either 2 dosages of prostaglandin F2 alpha 12 days apart (n=36) or intravaginal progestogen sponges for an equal length of time (n=36).
Mutiga, E.R., Mukasa-Mugerwa, E.
openaire +3 more sources
Kisspeptin as a test of hypothalamic dysfunction in pubertal and reproductive disorders
Andrology, EarlyView.Abstract The hypothalamic–pituitary–gonadal axis is regulated by the gonadotropin‐releasing hormone pulse generator in the hypothalamus. This is comprised of neurons that secrete kisspeptin in a pulsatile manner to stimulate the release of GnRH, and, in turn, downstream gonadotropins from the pituitary gland, and subsequently sex steroids and ...
Aureliane C. S. Pierret +5 more
wiley +1 more source
The effect of 17α-ethyl-19-nortestosterone on the estrus cycle [PDF]
, 1958 R. Richter
openalex +1 more source
Luteinizing hormone receptor knockout mouse: What has it taught us?
Andrology, EarlyView.Abstract Luteinizing hormone (LH), along with its agonist choriongonadotropin (hCG) in humans, is the key hormone responsible for the tropic regulation of the gonadal function. LH and hCG act through their cognate receptor, the luteinizing hormone/choriongonadotropin receptor (LHCGR; more appropriately LHR in rodents lacking CG), located in the testis ...
Ilpo T. Huhtaniemi
wiley +1 more source
Suppression of estrus in cats with melatonin implants
Theriogenology, 2009 The objective of this study was to assess the efficacy of a subcutaneous melatonin implant to suppress estrus in queens (felis catus). The hypothesis was that this implant would temporarily and reversibly suppress estrus in queens without producing any clinically detectable side effects.
Giménez, F. +6 more
openaire +4 more sources