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Topic: Oestrus

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	The mating and courtship of the tiger (Site not responding. Last check: 2007-10-11)
		Oestrus is the time when a female is receptive and able to become pregnant.
		Oestrus is also influenced by abortions or a stillborn litter.
		The possibility she was displaying a false oestrus in order to reduce the male's aggression is still being considered.
	www.lairweb.org.nz /tiger/mating.html (412 words)

	Oestrous cycles, oestrus and ovulation of the zebu in the Mexican tropics -- Vaca et al. 117 (17): 434 -- The ...
		Oestrous cycles, oestrus and ovulation of the zebu in the Mexican tropics -- Vaca et al.
		The length of the oestrous cycle, oestrus and the time of ovulation were assessed in 20 adult, non-lactating zebu cows over 53 consecutive days of observation.
		Oestrus duration was 15.3 +/- 6.0 hours and ovulation occurred 28.2 +/- 5.0 hours after the start of the period of sexual receptivity.
	veterinaryrecord.bvapublications.com /cgi/content/abstract/117/17/434 (331 words)

	Estrous cycle - Wikipedia, the free encyclopedia
		Oestrus is also the biological genus name of the gadfly.
		The estrous cycle (also oestrous cycle; originally derived from Latin oestrus) refers to the recurring physiologic changes that are induced by reproductive hormones in most mammalian placental females.
		Euripides used "oestrus" to indicate "frenzy", describe the madness of Orestes and the madness of Heracles.
	en.wikipedia.org /wiki/Oestrus (1456 words)

	Acupuncture to Induce Oestrus in Gilts
		The interval from the start of the trial to oestrus (and mating) in the control (C) and acupuncture-treated (AA+MA) gilts and was 30.8 v 17.6 days, P <0.01).
		The data confirm the conclusions of Taiwanese workers that acupuncture may be used to induce oestrus (by shortening the anoestrus interval) in gilts.
		Schilling E and Cerne F (1972) Induction and synchronisation of oestrus in prepubertal gilts and anoestrus sows by PMSG/HCG compound.
	users.med.auth.gr /~karanik/english/articles/gilts.html (997 words)

	Uterine Ultrasound Characteristics and Steroid Correlation
		The purpose of the present study was to investigate the precise relationship of endometrial oedema to oestrous behaviour, stage of the oestrus cycle and plasma oestradiol and progesterone concentrations.
		These changes during oestrus and dioestrus are due to the influence of the ovarian steroids that predominate during a given phase of the cycle (oestrogens and progesterone respectively).
		The period known as oestrus during which the mare is sexually receptive to the stallion is often determined by exposing the mare to a stallion (teasing).
	www.equine-reproduction.com /articles/ultrasound-steroids.shtml (2884 words)

	THE REPRODUCTION IN PIG
		Follicular development is present during all the oestrus cycle but this effects of the oestradiol are evident only during the last 4 or 5 days of the oestrus cycle when the progesterone levels are low.
		During the oestrus cycle in the pig there does not appear to be distinct follicular waves as in cows; it has been proposed that the final growth of follicles to ovulatory size takes 19 days.
		At oestrus the gilts should be inseminated twice on am/pm or pm/am basis with the first insemination done immediately if the gilts are checked for oestrus only once at day or by back pressure, or approximately 12h after the first detection of standing heat if the gilts are checked twice a day.
	www.unipr.it /~fderensi/rip_pig/rip_pig.htm (2179 words)

	oestrus
		oestrus In female mammals, the period of sexual excitement and acceptance of the male.
		The cow should have her first oestrus within 60 days of calving and there should be a minimum 70 per cent conception to service.
		Female pandas normally reach oestrus at the age of four or five and have only one chance of conceiving in a year.
	www.mongabay.com /igapo/biotech/oestrus.html (154 words)

	Effect of exogenous melatonin on sexual behaviours in West African Dwarf goat
		Oestrus response (P<0.05) was 40, 60, 100 and 80% for the 0, 3, 6, and 9mg melatonin respectively.
		This delay in the onset of oestrus behaviour has been reported to be associated with a delay in the LH preovulatory surge (Maurel et al 1992) and a delay in the time of ovulation (Leboeuf et al 1993).
		Variation between treatments regarding duration of oestrus might be due to the amount of oestrogen in the blood arising from induced luteolysis as oestrogen level in the blood is presumed to bring the animals in oestrus and a depressing effect on progesterone (Mirskaria et al 1941, Noel et al 1999).
	www.cipav.org.co /lrrd/lrrd18/9/dara18133.htm (2904 words)

	[No title]
		Behavioural changes which were diagnostic of oestrus in the WAD does include standing to be mounted by buck, Lordosis posture, tail wagging, keen interest in the male and slight swelling and reddening of the vulva lips.
		Oestrus behaviour becomes even more important when it could be exhibited in the absence of the male, as is the case with cows (Hafez 1996).
		Oestrus score (OS) is the sum of all the attributes, which may not necessarily be exhibited by all the does.
	www.cipav.org.co /lrrd/lrrd16/10/ola16075.htm (2539 words)

	Group 1 Losses - Anoestrus - Managing Pig Health
		The second is the luteinising hormone (LH) which at the point of oestrus is excreted into the bloodstream to act on the follicles and cause the eggs to be released.
		Oestrus is initiated by the ovary which produces the other female hormone, oestrogen and it is this that is responsible for the outward signs of heat.
		Heat is observed during the initial period in the holding pool and once gilts have been identified at their first oestrus they should be ear tagged and moved into the service area in small groups of no more than six.
	www.thepigsite.com /pighealth/article/108/group-1-losses-anoestrus (1248 words)

	SessionD14 (Site not responding. Last check: 2007-10-11)
		The oestrus of yak cows were synchronised by using PGF2-a (Prosolvin, Intervet; Lutalyse, Upjohn) in 1.0 to 2.0 mL once intramuscular injection and the oestrous behaviour of treated animals were observed for 72 hours.
		The oestrus of the yak cows was detected with assistance of teaser bulls.
		Oestrus synchronisation rates in all animals were 69.2% and 80.0%, respectively, for intravaginal use of progesterone sponge and implantation in ear.
	www.ilri.cgiar.org /InfoServ/Webpub/Fulldocs/Yakpro/SessionD14.htm (703 words)

	The sows oestrus cycle (Site not responding. Last check: 2007-10-11)
		Oestrogen is also primarily responsible for the behavioural and outward physical signs observed during oestrus, ie reddening and swelling of the vulva, discharge of mucous from the tract, and the ability of the boar or stockperson to elicit the 'standing reflex'.
		The smell (boar older than 10 months) sound, sight and touch of a boar daily, reduction in levels of stress, presence of other females in oestrus, adequate nutrition, light and care all are received by the higher centre of the brain to enhance oestrus activity and ovulation.
		The DMA (oestrus detection and mating area) is a pen design specifically for housing boars, oestrus detection using the BPT, and matings.
	www2.dpi.qld.gov.au /pigs/4552.html (844 words)

	Oral mucosa myiasis caused by Oestrus Ovis
		One of the causes of human myiasis is Oestrus Ovis (ship nasal botfly) which in the facial area reported cases mostly include eyes, nose, ears and pharynx.
		Oestrus ovis (sheep nasal botfly) from the class: Insecta, order: Diptera and family: Oestriae, is one of the common causes of human myiasis in the reported cases.
		The specimen consist of five larvae in the size of 2.5 to 4 mm long, white to dark yellow in color with a fl spot at the end of the bodies (Figure 3) was sent to the department of parasitology at the faculty of health for further investigation.
	www.ams.ac.ir /AIM/0253/0253194.htm (1282 words)

	Training manual for embryo transfer in cattle (Site not responding. Last check: 2007-10-11)
		Oestrus detection must be done carefully and conscientiously; accuracy is as important for recipients as it is for donors since embryo transfer success depends on the oestrous synchrony of both.
		Aids to oestrus detection, such as chalk on the tailhead, are useful as long as they do not become a crutch for visual detection.
		The first good indicator of pregnancy is failure of the recipients to show oestrus 18–24 days after the pre-transfer oestrus; obviously, the converse, showing oestrus, indicates non-pregnancy, although a small percentage of pregnant animals are in behavioural oestrus about three weeks after the previous oestrus.
	www.fao.org /DOCREP/004/T0117E/T0117E03.htm (3654 words)

	UNODC - Bulletin on Narcotics - 1981 Issue 3 - 005
		Oestrus was shortened with doses of both the resin and the smoke condensate, whereas dioestrus was lengthened with the 20-mg/kg dose of the resin and both the 10- and the 20-mg/kg doses of the smoke condensate.
		A reversible shortening of oestrus is observed with doses of 10 and 20 mg/kg of the resin (tables 1 and 2); the shortening is irreversible with doses of 10 and 20 mg of the smoke condensate (tables 3 and 4).
		The shortening observed in postoestrus and dioestrus during treatment with the control group (table 5), which is irreversible for postoestrus and reversible for dioestrus, may be due to equilibrium compensation by the reversible lengthening of pro-oestrus and the irreversible lengthening of oestrus.
	www.unodc.org /unodc/es/bulletin/bulletin_1981-01-01_3_page006.html (1757 words)

	[No title] (Site not responding. Last check: 2007-10-11)
		It is recommended for administration by the oral route in bitches for the postponement or prevention of oestrus and the treatment of hypersexuality which may be manifest as undesirable behaviour in male dogs.
		Prevention of oestrus (suppression of heat) (Bitches): When the tablets are used by the recommended method for the prevention of oestrus, the signs of pro-oestrus usually disappear in two to three days and the subsequent oestrus normally occurs four to six weeks earlier than would have been the case had medication not been given.
		The stage of the oestrus cycle may be confirmed by the examination of vaginal smears.
	www.vmd.gov.uk /espcsite/Documents/85159.DOC (1566 words)

	A Synthetic Oestrus-Exciting Compound Cook, JW., et al / Nature 14jan33
		At the present moment, it is impossible to state the activity of the material in terms of oestrin since the relatively difficult solubility of the material together with the consequent difficulties of administration and absorption make a comparison impossible.
		The observations show that 1-keto-1 :2:3:4totrahydrophonanthrene is capable when injected into castrated animals of inducing oestrus of an exactly similar typo to that obtained by the injection of oestrin.
		This result is of importance, for 1-keto-1 : 2 : 3 : 4totrahydrophonanthrone is the first compound of known chemical constitution found to have definite oestrus-exciting activity and furthermore, its molecular structure has many points of resemblance to the structure suggested for ketohydroxy-oestrin.
	www.mindfully.org /Pesticide/Synthetic-Oestrus-Exciting-Cook.htm (638 words)

	Age at first oestrus (Site not responding. Last check: 2007-10-11)
		Ages at first behavioural oestrus and at elevated plasma progesterone concentration were measured in three selection groups, after seven generations of divergent selection for lean growth rate (LGA), lean food conversion (LFC) and daily food intake (DFI) in a population of Large White pigs.
		First physiological oestrus was defined to have occurred when a blood plasma progesterone concentration of at least 1 ng/ml was detected from weekly sampling of gilts.
		Detection of first oestrus with oestrous behaviour signs combined with physiological assessment may be required in genotypes selected exclusively for lean growth rate, rather than relying only on observed behavioural signs of oestrus.
	www.projects.roslin.ac.uk /lean_growth/refs/ref14.html (439 words)

	2X04) Oestrus
		Oestrus, the latest installment in Virtual Season 2, has all the things we have come to expect from the X-Files: monsters, hospitals, agents in danger, and shadowy hints of the world’s seething underbelly.
		Oestrus details at some length with Mulder’s feverish Prickly Heat, and Agent Scully becomes Nurse Scully, busily making sandwiches, running baths, and otherwise playing the nurturer.
		My advice is to read Oestrus with an eye toward the unconscious, to think about fever and all its connotations, to examine the sometimes strange and unsettling interaction between our heroes.
	www.angelfire.com /ky/ixnaysxfiles/2X04review.html (729 words)

	Preparation of early lambing ewes for mating Farming UK (Site not responding. Last check: 2007-10-11)
		At the beginning of the breeding season (the transitional period), in the absence of adequate progesterone priming, ovulation is not accompanied by behavioural oestrus.
		However, oestrus activity can be induced by the use of PMSG injections at the time of sponge withdrawal.
		Provided that the ewes are showing behavioural oestrus and sufficient sound rams are used, at least 95% of ewes should be pregnant by the end of a two cycle (34 – 40) day mating period.
	www.farminguk.com /vet/sheep/sheep44.htm (1678 words)

	Comparative Kinematics and Hydrodynamics of Odontocete Cetaceans: Morphological and Ecological Correlates with Swimming ...
		A good indication of the average number of oestrus cycles experienced by a female in a single breeding season is the number of ovulations experienced before conception.
		If the number of oestrus cycles in a breeding season (m) is low, and the ratio of the number of males to number of female pods (s) is high, it is to the advantage of the female for a male to be available when she goes into oestrus, which is the harem strategy.
		It is to the advantage of the female that the male stays with the pod (Harem), if the length of the oestrus cycle is low, so a male is available when she comes into oestrus.
	kingfish.coastal.edu /marine/375/f2000smrc.htm (1299 words)

	Thesis Library of Higher Education Commission
		The results of this study indicate less water retention in the cycling pro oestrus rats treated with DFMO as compared to the controls.
		In oestradiol benzoate (100 ug/g.b.w) treated ovariectomized rats, food and water' intake were reduced during the dark phase and light phase of the cycle.
		All these observations indicate water retention, Which appears to be related to the oestradiol-induced vasopressin release during the rat oestrus cycle.
	www.hec.gov.pk /htmls/thesis/thesis_detail.asp?op=173 (610 words)

	Modern Reproductive Methods Used to Enhance Goat Production - Goat Management - GOATWORLD.COM
		Attempts to synchronise oestrus in Barbari, Black Bengal and Jamunapari does by administering progestogens, progestogen + gonadotropin in combination, and prostaglandin by using different routes (Oral, S/C, 1/m and intra-vaginal pessaries).
		Progestogesn alone and/or in combination and FSH and oestradiol for induction of oestrus in anoestrous Barbari, Black Bengal and Jamunapari goats was tried.
		At the end of breeding season, non-returns to oestrus are no longer use to defect pregnancy.
	www.goatworld.com /articles/management/reproduction.shtml (2604 words)

	UNSW Embryology- Oestrus Cycle
		The mouse oestrus cycle is 4-6 days, with oestrus lasting less than 1 day.
		The oestrus cycle stops during lactation except for one oestrus 12-20 hours postpartum.
		Determining the stage of the estrous cycle in the mouse by the appearance of the vagina.
	embryology.med.unsw.edu.au /WWWHuman/MCycle/Ocycle.htm (588 words)

	Oestrus (Site not responding. Last check: 2007-10-11)
		Adult Oestrus ovis have fl pits dorsally between the eyes on the frons and fl tubercles among the yellow hairs on the yellow-brown scutum and scutellum.
		The abdomen is fl with an irregular pattern of lighter marking which varies with the angle of illumination.
		The female is ovoviviparous and matures about 500 eggs, which are deposited as newly hatched larvae in small batches of less than 50 at a time.When an opportunity presents itself, Oestrus ovis deposits larvae into the nasal cavity.
	icb.usp.br /~marcelcp/oestrus.htm (205 words)

	Training manual for embryo transfer in cattle
		Compaction is an excellent sign that the embryo is developing normally; lack of compaction by six days after oestrus in cattle indicates retarded development.
		As the morula develops into a blastocyst, it forms a cavity, the blastocoele, by expending energy to pump fluid between the cells.
		When the blastocoele becomes very large, the embryo expands (normally eight to nine days after oestrus), which thins the zona pellucida.
	www.fao.org /DOCREP/004/T0117E/T0117E07.htm (1989 words)

	Amazon.com: oestrus (Site not responding. Last check: 2007-10-11)
		Vaginal cytologic investigations for estimating the onset of oestrus cycle postpartum in ewes =: Vaginalzytologische Untersuchugen zur Erfassung des Wiederanlaufens...
		On the possible factors affecting the developmental rhythm of population of oestrus ovis L. (Diptera, Oestridae) =: O. vozmozhnekh prichinakh, opredelyaushchikh...
		The demonstration of oestrus in the vitamin A-deficient rat by supravital study of the vaginal smears by Karl E Mason (Unknown Binding - 1935)
	www.amazon.com /s?ie=UTF8&keywords=oestrus&tag=icongroupinterna&index=blended&link_code=qs&page=1 (486 words)

	Guinea Pigs Club :: Cavy Oestrus
		The sow (female guinea pig) has an oestrus cycle of five to six days and is in heat for just a few hours.
		When mated, the female becomes non-receptive to the male.
		Oestrus commonly occurs after the sow gives birth of a litter and it is not bad if you mate a sow again this time.
	www.guineapigsclub.com /gp_site/oestrus.asp (56 words)

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