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Topic: Breeding season

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	Male Iguanas In Breeding Season and Human Females
		Some articles here and in other published literature on iguanas speaks to the behavior of male iguanas towards humans during the iguana breeding season, in particular, the increased aggression of some (not all) male iguanas towards their human female during the female's monthly cycles during the iguana breeding season.
		During his first season, he did hang around me a lot when I was ovulating (walking up to me, putting a foot on me, staring at me with a rather dazed and confused look in his eye).
		The important thing to remember is that the tamer your iguana is before the start of his first breeding season, the easier it is going to be to deal with him during the season so long as you are aware of what to look for.
	www.anapsid.org /iguana/season.html (1263 words)

	Preparing Ewes For Breeding Season (Site not responding. Last check: 2007-10-26)
		Breeding season is either upon us or a few weeks away.
		By moving the ewe to a higher plane of nutrition before breeding we can increase the number of ova that she ovulates and thereby increase the number of multiple births.
		Summer pastures become heavily populated with worm larvae by late summer and it is best to move ewes to a clean pasture at the time of deworming.
	www.pipevet.com /articles/Preparing_Ewes_For_Breeding_Season.htm (296 words)

	Red kites breeding season
		Depending partly on the weather, most kites return to their breeding areas between January to early March to begin the task of selecting a nest site, and it is at this time that they are most conspicuous as they circle above suitable woodlands.
		Breeding pairs build flat and rather untidy nests in trees (usually oak, beech or larch) normally in broad-leaved woodlands, although conifer plantations and isolated or hedgerow trees may sometimes be used.
		After being incubated for 31-32 days the first egg hatches, to be followed by the rest at 2 or 3 day intervals; this results in nestlings of different ages and sizes which is an evolutionary adaptation to ensure that during periods of food shortage the largest (i.e.
	www.gigrin.co.uk /w/kites_breeding_season.html (511 words)

	Breeding Season Issues
		Physical signs that a male iguana is in breeding season are an increase in orange coloring in the skin, an enlargement of the waxy protrusions from the femoral pores (see photo below), and the presence of sperm plugs seen either protruding from the vent or found in the enclosure or habitat area.
		Since mature iguanas go into breeding season for a period of several weeks, or even months, every year, this is something owners must deal with on a yearly basis.
		It is imperative that owners of male iguanas be on the lookout for this type of territorial aggression during breeding season.
	www.greenigsociety.org /breedingseason.htm (2187 words)

	Evaluating the Breeding Soundness of Beef Bulls
		The more time between the evaluation and the beginning of the breeding season, the less reliable the results will be as a predictor of the bull's fertility and his ability to breed.
		Testing at weaning allows sufficient time to identify and purchase replacement sires before the next breeding season begins, but testing at this time is a less reliable indicator of the bull's breeding soundness than testing closer to the beginning of the breeding season.
		Breeding soundness evaluation is a practical method to eliminate bulls with less than satisfactory breeding potential.
	www.cahe.nmsu.edu /pubs/_b/b-216.html (2766 words)

	Converting to a Controlled Breeding Season
		Controlled breeding is defined as developing specific predetermined strategies on when to begin and end a breeding season.
		Purchasing replacement heifers that fit the breeding season may be an option to consider until the mature cow breeding season is complete.
		This results in two breeding seasons and two calving seasons, and reduces the number of bulls needed during breeding since the cow herd is split into two groups.
	pubs.caes.uga.edu /caespubs/pubcd/B1307.htm (2816 words)

	NPWRC :: The Cranes
		The breeding seasons of cranes in the tropical and subtropical zones are much more variable, but generally coincide (and vary) with local rainy seasons.
		The breeding seasons of the Brolga and Sarus Cranes are closely associated with the distinct monsoons of southeast Asia and Australia.
		Breeding densities and territory sizes are poorly known for most cranes, but in some species are apparently quite variable in response to local conditions.
	www.npwrc.usgs.gov /resource/birds/cranes/breeding.htm (1257 words)

	Prepping stallions for the breeding season - Breeding and equine reproduction information and articles - Horsetalk -- ...
		How you get a stallion ready for the breeding season depends on many things, but basically you can break it down into getting new stallions introduced into the breeding routine, and a refresher course for experienced stallions.
		Don't vaccinate stallions in the middle of the breeding season because a high fever can affect sperm, which take about 60 days to mature in the stallion.
		Then, if there is any problem during the breeding season, you have a baseline to go back to and compare to see where the problem lies.
	www.horsetalk.co.nz /breeding/br-prep.shtml (947 words)

	Title page for ETD etd-04282003-101336
		The objective of this research was to evaluate factors associated with the biostimulatory effect of bulls on the resumption of ovarian cycling activity and breeding performance of first-calf suckled beef cows.
		In Experiment 1, we tested the hypotheses that short-term (30 d) bull exposure before the breeding season does not alter: 1) the proportion of cows that resumed cycling activity; 2) the proportion of cows that responded to estrous synchronization (ES); and, 3) AI and overall pregnancy rates.
		Exposure of cows to bull urine did not alter; the interval from exposure to resumption of ovarian cycling activity, the proportion of cows cycling before the breeding season, and the proportion of cows that responded to ES.
	www.montana.edu /etd/available/tauck_0505.html (704 words)

	Iguana Breeding Season Basics
		While the other articles on my Behavior, Breeding, and Reproduction page go into things like the meaning of head-bobs, male breeding season aggression, and the female's cycle of egg development and laying, this article will fill in some of the blanks and tie together information scattered throughout several articles.
		Because the male's season in captivity is so much longer than in the wild, and because captivity overall is far less humid than the iguana's native range, it is important to make sure both males and females stay well hydrated during the season as well as the rest of the year.
		With wild iguanas going into season only once a year, and males only for a finite period of time each season, we can posit that captive iguanas who do so twice a year are experiencing greater stress.
	www.anapsid.org /iguana/breedingbasics.html (1698 words)

	Thoughts for the Spring Breeding Season
		With the results of last year's breeding season fresh in producers' minds, it is time to address the breeding season for this year.
		Another advantage of a controlled breeding season is the reduction in the number of feedlot heifers calving while on feed.
		The move to a controlled breeding season need not be a drastic one year decision where a large number of out-of-synch cows are sold.
	www.noble.org /Ag/Livestock/SpringBreedingThoughts/index.htm (727 words)

	Breeding Time Management (Site not responding. Last check: 2007-10-26)
		Rams also need to be wormed and have their feet trimmed prior to the breeding season.
		It is also a good idea to begin flushing the rams with some grain prior to the breeding season if you do not already have the rams on a diet containing some grain.
		Handling the ewe prior to the breeding season is essential to your program’s success.
	www.pipevet.com /articles/Breeding_Time_Management.htm (772 words)

	Shorten Breeding Season
		Most calves are lost at the very beginning of the season, when they are not expected, and at the end of a long calving season, where producer fatigue plays a major role.
		If a producer decides to shorten the breeding season from 120 days to 70 days, the length of the previous calving season should be analyzed to estimate the number of cows that may be open after the breeding season.
		A short 30- to 45-day breeding season for replacement heifers is especially important to select the most fertile heifers and to reduce labor at calving.
	www.wvu.edu /~agexten/forglvst/shortbrd.htm (1120 words)

	Nest-box Reoccupation — Birdhouse Network
		Accounting for these seasonal differences, we found that the number of nest attempts (nests with at least one egg) was 26% higher in the south, varying from an average of 1.8 attempts per box in the southern portion of the bluebird range to slightly less than 1.32 attempts in the northern portion of the range.
		Given the different breeding season length, we also have to examine what the relative potential for multiple broods is in the north and south.
		The relative difference in number of potential attempts between the north and south with regard to length of breeding season is similar to that estimated by box re-occupation.
	www.birds.cornell.edu /birdhouse/results/box_reoccupation (1721 words)

	Midwest Messenger: Around The Web (Site not responding. Last check: 2007-10-26)
		The ideal length of the breeding season (or period that cows are exposed to a bull) varies among producers depending on their production systems.
		However, a breeding season length of 120 days is longer than necessary given the extreme climatic conditions that we experience in Minnesota.
		When we suggest calving on a 45 day breeding season many producers are skeptical because they feel that many cows only have a maximum of two heat cycles to become pregnant.
	www.midwestmessenger.com /articles/2005/08/15/around_the_web/story2.txt (908 words)

	Breeding Your Mare
		Most of the problems result from a failure to appreciate either the seasonal nature of reproduction in the horse, or the fact that mares have a variable estrous cycle pattern even during the ovulatory season.
		Infection of the reproductive tract is a commonly identified cause of clinical subfertility in the mare.
		The persistent absence of estrus in response to teasing is a fairly reliable indicator of pregnancy, especially two to three weeks after breeding when you would expect your mare to return to estrus if she were not pregnant.
	www.extension.umn.edu /distribution/livestocksystems/DI6119.html (2924 words)

	Breeding Season
		The supply is rich near the pole, but the season is short, and birds must court, mate, and nest well before the risk of frigid storms is over.
		In addition to such ultimate causes favoring the evolution of breeding at a particular time, we must consider environmental changes that are proximate causes of the triggering of breeding behavior.
		The overwhelming majority of bird species living outside of the tropics sense that it is time to start breeding by the lengthening of the days as spring approaches.
	www.stanford.edu /group/stanfordbirds/text/essays/Breeding_Season.html (839 words)

	Halfbakery: Human Breeding Season
		It strikes me that human affairs and society would be far better regulated were we to have a shortish breeding season, perhaps a fortnight or so, during which all sexual activity would take place, leaving us unburdened with lustful impulses for the rest of the year.
		Breeding is don only with the expectation of pregnancy which leads to birth of a new-born person.
		Besides, if a breeding season were to be instituted they would most likely be discriminate by age.
	www.halfbakery.com /idea/Human_20Breeding_20Season (942 words)

	Breeding Season Management
		The length of the breeding season is an important factor in determining pregnancy rate.
		During the breeding season it is important that the herd be checked routinely to observe breeding progress.
		A suggested practice would be to breed the top end of the herd AI the first 25-30 days of the breeding season and use a clean-up bull or bulls for the remainder of the breeding period.
	www.omafra.gov.on.ca /english/livestock/beef/facts/85-054.htm (1959 words)

	Preparing the Flock for the Breeding Season
		Prior to the breeding season, rams should be evaluated for several aspects that may affect their serving capacity.
		Rams that will be breeding in August and September should be sheared 30 days prior to the breeding season to help minimize heat stress.
		If weather is extremely hot during the breeding season, rams may be removed from the ewes during the day and kept in a cool place until returning to the ewe flock at night for breeding.
	www.ext.vt.edu /news/periodicals/livestock/aps-98_08/aps-957.html (691 words)

	Home-Breeding Problems Encountered Early in the Breeding Season
		At the commencement of the season, mares are âteasedâ by means of a male animal, usually a pony stallion.
		The colour of the mucous membrane of the lip of the breeding tract, the âvulval lipâ, is usually pale pink in early oestrous and gradually becomes more puce coloured as the heat period intensifies.
		Early in the season, the two principal hormones produced by the mare to control the oestrus cycle are often unbalanced with the hormone responsible for follicle production being produced in excess, while the second hormone that is required for normal development and ovulation of the follicle is under produced.
	www.petalia.com.au /Templates/StoryTemplate_Process.cfm?specie=Equine&story_no=1239 (1115 words)

	Breeding Season Management for Rams and Ewes
		Rams should be managed to be in moderate body condition prior to the breeding season (not excessively fat or thin), to provide adequate reserves of energy for use during the breeding season.
		As a general guideline, ram lambs are capable of breeding 15 to 25 ewes during their first breeding season.
		A month prior to the breeding season is also an opportune time to trim and inspect feet on the ewe flock, and perform preventative foot care.
	www.ext.vt.edu /news/periodicals/livestock/aps-03_10/aps-263.html (882 words)

	BBC NEWS \| UK \| 'Worst' sea bird breeding season
		Britain's sea birds are heading for their worst breeding season on record due to a decline in the small fish they eat, according to a BBC investigation.
		These microscopic creatures are at the heart of the ocean food chain, and all sea life depends on them.
		Rising water temperatures have led to sudden and dramatic changes - with the plankton breeding at the wrong time, and in the wrong place, threatening species like cod.
	news.bbc.co.uk /1/hi/uk/3822719.stm (241 words)

	Cattle Network - Connecting The Beef Industry Worldwide
		While it is true that bulls during the post-breeding season don't require much management, adequate planning and care can help insure that bulls costs will be kept within reason and that bulls will be ready to go again the next time they are needed.
		In most spring calving herds, the breeding season will commence in the spring or early summer and extend for two to three months.
		Bulls will vary greatly in condition at the end of the breeding season, depending upon the number of cows per bull, the length of the breeding season and the quality of the feed available.
	www.cattlenetwork.com /content.asp?contentid=2365 (1069 words)

	Teagasc - Feeding Management During the Breeding Season
		To obtain good fertility performance, cows need to be in a positive energy balance both entering and during the breeding season.
		As a result there were less cows not-in-calf at the end of the breeding season.
		During the breeding season, the objective is to keep the herd well fed and in positive energy balance.
	www.teagasc.ie /publications/dairybreeding/feedingmanagement.htm (279 words)

	Standing Stallions, Breeding Mares and the Law: Your Pre-Breeding Season Legal Checkup - Breeding and equine ...
		While the next breeding season is still some time away, now might be a good time to get prepared.
		Well before the season gets into full swing, you need to prepare (or review) the contracts you will be using.
		Some of the issues peculiar to breeding contracts are the kind of warranties that are offered (such as live-foal guarantees), who is responsible for insuring the mare during transport and at the farm, and what kind of protections are utilized against injury and the spread of contagious disease.
	www.horsetalk.co.nz /breeding/tha-legal.shtml (1064 words)

	breeding
		Most producers want to get the kids born as early in the season as possible to maximize growth and profits and this is hard to do if there are high temperatures at the time of breeding.
		The first thing to do after the breeding is completed is to make a record of it and make a note on your calendar 21 days from now to watch for the next heat.
		Line breeding is the mating of animals which are both related to an ancestor with an outstanding trait (sometimes with the fiat that they not be related to each other).
	www.goatwisdom.com /breeding.html (2394 words)

	San Diego Zoo Weblogs » Blog Archive » Breeding Season (Site not responding. Last check: 2007-10-26)
		Breeding season is, unquestionably, the most exciting time for the biologists in the Hawaii Endangered Bird Conservation Program.
		The captive `alala population has, for many seasons, laid eggs that are problematic to say the least.
		In order to get the best results from our breeding pairs, we closely monitor the birds using closed-circuit video cameras to determine when pairs are bickering (so we can separate them), when eggs are laid, and when it is best to remove eggs for artificial incubation.
	www.sandiegozoo.org /wordpress/general/breeding-season (575 words)

	Breeding Season Horse
		Be sure to allow plenty of time before the breeding season to train your new horse in case difficulties are encountered.
		If this is the first breeding season for the stallion, be sure the stallion listing fee has been included.
		For mares the horse manager wishes to cycle early in the breeding season, lighting programs need to be started 60 to 90 days prior to the beginning of next...
	www.horses-horse.com /horses/3/breeding-season-horse.html (339 words)

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