Significats de anestrus en anglès

Thyroid hormones are permissive for various species to enter seasonal anestrus.

In addition, reproductive hormone levels were determined during ovine anestrus and the breeding season.

Thyroid hormones permit the increase in response to estradiol negative feedback in ewes at the transition to anestrus.

Furthermore, the levels of estrogen, progesterone and LH in ovine anestrus were significantly lower than those in the breeding season.

This finding contrasts with the changes in estradiol negative feedback at the transition to anestrus, which are entirely thyroid hormone dependent.

Thus, the premammillary region and vmPOA are brain sites in which thyroid hormones act to permit the onset of seasonal anestrus.

Both doses delayed puberty; low E also produced pronounced prepubertal and seasonal anestrus hypogonadotropism, and delayed the onset of the second breeding season.

In the ewe they act centrally to permit the onset of potent estradiol-negative feedback responsible for anestrus, but the specific sites of action are unknown.

Therefore, we have proposed that estrogen-responsive afferents to A15 neurons are part of the neural circuit mediating E2 negative feedback in anestrus.

The IUD caused anestrus in 98% of the heifers, with a daily weight gain 25.5 % higher than in the control heifers.