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| | === Oestrogens === | | === Oestrogens === |
| | + | |
| | + | * Used to induce oestrus in anoestrous animals. |
| | + | * Have a direct effect on oestrus behaviour and the genital tract. |
| | + | * May inhibit the pituitary release of gonadotrophins in high doses. |
| | + | * Do not initiate ovarian activity or ovulation. |
| | | | |
| | === Progestogens === | | === Progestogens === |