The fresh new sexual duration off a routine cow try described as estrus, otherwise heat, attacks one to are present at 21-big date intervals

The end of for each uterine horn is connected to an enthusiastic oviduct, known as an excellent fallopian pipe. Brand new oviducts try small, tube-such as formations. Because they are very small, he's hard to getting. They transport jizz tissue to the webpages off fertilization (top of the 3rd of the oviduct) and you can a keen embryo returning to the fresh new uterus in the event that conception occurs. At the conclusion of for each oviduct is actually a slimmer, cup-such as for example membrane that is hard to end up being: the brand new infundibulum. That is why for every single ovary can be found nearby the infundibulum.

The entire reproductive tract are linked to a finer suspensory membrane layer known as the wide ligament. So it elastic-such as tendon have a tendency to continue and move in pelvic and body cavities so that the fresh reproductive tract to move. That it direction required by the weight of fetus in addition to crowding of one's area of the almost every other body organs. The new large tendon acts as an excellent cradle on the region and you can are attached to the higher pelvic and body cavities. Additionally, it consists of arteries and blood vessels supplying the system having bloodstream in order to supply new tissues.

Figure step 3 suggests an internal view of the brand new reproductive region and large ligaments out of an fdating eÅŸleÅŸme sorunu unbarred (non-pregnant) cow. Desk 4 offers an over-all size malfunction of the numerous bits of the system in the an open cow. The entire system with all its pieces may vary in size and you can be. It hinges on the latest stage of estrous cycle and on this new breed, size, and you may reproductive history of the animal. Basically, how big is the whole discover region try a dozen to 18 inches much time. In more youthful heifers that have simply achieved adolescence, the fresh region are only 8 in much time. Brand new region off mature cattle which have got multiple lower legs will get offer so you can twenty four inches.

The whole process of advancement and you can regression of a regular corpus luteum grounds a good cow having the lady attribute 21-big date intimate cycle

During the estrus, the cow is influenced by estrogen getting created by hair follicles with the the brand new ovaries. So it hormones causes this lady to show estrus. In 24 hours or less after the initial levels of estrus, one of the hair follicles ruptures and you may releases one ovum, otherwise eggs. This really is ovulation. Brand new egg movements on infundibulum and ultimately down into the fresh oviduct. The brand new cavity into ovary remaining by the ruptured hair follicle expands into a unique design labeled as a good corpus luteum (Contour 2). This new corpus luteum supplies progesterone, new hormonal responsible for keeping pregnancy. If the conception will not exists using this type of ovulation, brand new uterus releases a hormonal titled prostaglandin. They regresses, otherwise destroys, the corpus luteum.

Regression is finished of the everything sixteen to 17 months with the course. Meanwhile, hair follicles continue to expand for the ovary. Due to the fact corpus luteum features regressed that is don't generating progesterone, an alternative ovulatory follicle is hired. Inside 4 in order to five days, the new cow efficiency so you can estrus.

They captures the egg, or egg cell, because it's expelled regarding a keen ovarian follicle during ovulation, and you will transports the egg into oviduct to have ultimate fertilization

Whether your cow is actually mated through the estrus, the fresh sperm cells have a tendency to travelling on site out-of deposition (new vagina) with the site regarding fertilization (higher third of one's oviduct) within a few minutes. If you're here, the latest sperm muscle read a six- to eight-hour growth months entitled capacitation. Merely next normally the sperm cells fertilize an enthusiastic egg. Consequently, in the event the egg finds the fresh new fertilization webpages, the newest sperm muscle are already there and probably has actually undergone capacitation. The probability of fertilization and maternity average about 50 so you can 70 %.