I Wait it serves you this on physiology and anatomy.
Ovary
Since the sow is not seasonal and poliéstrica, the ovaries are cyclically active after the puberty. During the phases lúteas and precocious folicular, there are up to 30 small follicles (less than 5mm) for ovary. Around half of these they ovulate during the estro, and the other ones return to be continued in some few days by a new wave of follicles, still when they are present bodies functional lúteos on the ovary. The senility interrupts this pattern possibly, but, I lower practical conditions of farm, in general the animal is sacrificed before the senility. After the ovulation, the follicle you collapses, a slight hemorrhage is presented inside the central cavity and the cells of the granular one begin to proliferate. The development of the body lúteo is progressive and it requires around one week for total development. The progesterona production begins to be increased soon after of the ovulation. The bodies lúteos rise above the surface of the ovary, giving the appearance of a cluster of grapes. If the sow is pregnant, the bodies lúteos stay along the gestation. If the animal is not pregnant, the luteólisis begins the day 14 at 16 of the cycle estrual. The exterior of the bodies recently formed lúteos is pink due to the high vascularización and the ovulation point remains visible on the body lúteo until the day 12 approximately. Toward the end of the skillful one, when the degenerative changes begin, the body lúteos takes a yellowish brown color, especially on the court surface.
The left ovary is more functional in the sow. Most of the studies indicates that around 55% of the oocitos they are of the left ovary. The intra-uterine migration of the embryos before the installation is common. If an ovary of the sow is extirpated, there will still be a relatively equal distribution of embryos in both horns of the uterus before the installation. This way, still when the left ovary is more functional than the right, a number similar of embryos is located in general inside each uterine horn. The bilateral ovariectomía causes abortion in any stage of the gestation due to the subsequent fall in the progesterona levels.
Dr.Ivan Cintora of ENGORMIX.COM
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