Ultrasonographic study was undertaken to establish the echogenecity and size of reproductive organs of 18 cycling buffaloes of different parities and compared with the sizes measured by palpation per rectum at estrus (day 0), met estrus (day 2), mid diestrus (day 10) and late diestrus (day 16). The overall mean size of cervix, uterine body, right horn, left horn, right ovary and left ovary meas...

The neuromodulatory interaction of sex steroids with the opioid system may involve in sex differences in pain sensitivity. Also, sex steroids undergo fluctuations during estrus cycle. On the other hand, adrenergic system can influence pain sensitivity. Thus, the aim of the present study was to investigate the effect of phenylephrine and prazocin on pain sensitivity during estrus cycle. For this...

BACKGROUND Prolonged pre-insemination anestrus (i.e. delayed puberty) is a major contributing factor for culling up to 30% of the replacement gilts at large breeding farm units in Vojvodina. It is imperative to determine if these gilts are acyclic (prepubertal) or cyclic, but just fail to exhibit behavioural estrus. Recent investigations demonstrate that treatment with equine chorionic gonadotr...

Mucus within the cervical canal represents a hormonally regulated barrier that reconciles the need to exclude the vaginal microflora from the uterus during progesterone dominance, while permitting sperm transport at estrus. Its characteristics change during the estrous cycle to facilitate these competing functional requirements. Hydrated mucin glycoproteins synthesized by the endocervical epith...

Abstract The objective of this research was to analyze the reproductive performance Gayo horse as an animal genetic resources in Southeast Aceh. This has conducted study used a survey method. choice location done intentionally (purposive sampling). total population horses scattered Aceh currently is 102 tails and number samples taken 24 individuals with minimum requirement that respondents keep...

The neuromodulatory interaction of sex steroids with the opioid system may involve in sex differences in pain sensitivity. Also, sex steroids undergo fluctuations during estrus cycle. On the other hand, adrenergic system can influence pain sensitivity. Thus, the aim of the present study was to investigate the effect of phenylephrine and prazocin on pain sensitivity during estrus cycle. For this...

Rats can use a wide spectrum of intra- and extramaze information while navigating through the environment. The current study examined the relative contribution of an intramaze cue with regard to its proximity to the goal. Three experiments were conducted and the impact of intramaze cue removal or rotation on water maze search was examined. In males, the effect of the intramaze cue declined mono...

Changes in reproductive tract histomorphology, and estrogen (ERalpha) and progesterone receptor (PR) expression throughout the breeding cycle were evaluated in free-ranging stranded female California sea lions (Zalophus californianus). Hormone receptor expression in the ovaries, uterus, cervix, and vagina was evaluated using an immunohistochemical technique with monoclonal antibodies. During a ...

Kisspeptin has been demonstrated to affect reproductive cyclicity and the attainment of puberty in multiple species, presumably through its actions on gonadotropin releasing hormone luteinizing hormone. administration causes increased plasma concentrations LH pigs, sheep, rats. The objective this experiment was evaluate changes hypothalamic kisspeptin system throughout estrous cycle gilts. Estr...

repeat breeding (rb) is a syndrome and several factors have been identified as its causes. luteal insufficiency is a known cause of embryonic mortality. the aim of this study was to assess the effect of two periods of p4 therapy on the second service and also their effects on the first plus the second service conception rates (cr) of repeat breeder dairy cows. cows included in the study were in...