Follicular growth pattern in cyclic rats from late pro-oestrus to early oestrus
نویسندگان
چکیده
منابع مشابه
A novel farm technology to quantify dairy cow cervix morphology: oestrus versus non-oestrus models
The objective was to quantify and compare cow cervical morphology on oestrus vs. non-oestrus daysusing a new farm technology. The cervical tissues were videotaped using a cervixscope involving newcamera equipment in four Holstein cows on multiple oestrus and non-oestrus days to score tissue morphology as altered by oestrus. The non-oestrous days were in diestrus phases. The videotaped records w...
متن کاملThe onset of oestrus and ovulation in lactating rats.
Lactation delays the re-initiation of oestrous cyclicity in rats, resulting in physiological sterility for the duration of suckling. During this phase, the secretion of pituitary gonadotrophins is suppressed by an unknown mechanism. Continued application of the suckling stimulus by litter replacement (Bruce, 1958; Nicoll & Meites, 1959), or injections of prolactin (Meites & Nicoll, 1959), have ...
متن کاملOestrus ovis ophthalmomyiasis in Cyprus.
IntrodUl .. :tion Human ophLhalmomyiasis due to infestation with the larvae of the sbeep nasal bot fl y Oestrus ovi.\· has beeo known for 70 ye_ars l and the parasite is widely distributed in the Mediterranean , Russia , lndia, South Afri ca, Canada and th e USA. There has been no report of cases from Cyprus in spite of many cases occurring each year am ong the local community. Three ~ases of O...
متن کاملCrystallization patterns in anterior vaginal fluid from bitches in oestrus.
Bitches exhibited a characteristic arborization pattern of the fluid from the anterior vagina during pro-oestrus and oestrus. These changes were monitored together with conventional vaginal cytology and plasma oestrogen and progestagen concentrations. A classical ferning pattern, similar to that seen in bovine cervical mucus at oestrus, occurred after the peak in plasma oestrogen concentrations...
متن کاملExpression and detection of oestrus in cattle.
For herds using AI heat detection rate and calving rate are the two major determinants of compactness of calving, of the proportion of cows that fail to conceive in a defined breeding season. Numerous factors affect the expression of heat including, housing arrangement, floor surface, feet and leg problems and status of herd mates. The number of mounts a cow receives increases with the number o...
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ژورنال
عنوان ژورنال: Reproduction
سال: 1997
ISSN: 1470-1626,1741-7899
DOI: 10.1530/jrf.0.1100153