Italian Renaissance Art. Florence (Quattrocento), Rome and Venice (Cinquecento). A-Z of ART MOVEMENTS. The Dome of Florence Cathedral, designed by Filippo Brunelleschi. (1377-1446), was a public symbol. of Florentine superiority during. the early Italian Renaissance.
How to Tell when a Cow or Heifer is in Estrus. Estrus is defined as the period where a female (in this case, a cow or heifer) is receptive to a male (or, the bull). Estrous, on the other hand, is the whole reproductive heat cycle that a female goes through, from heat period to no heat period (Proestrus, Estrus, Metestrus, and Diestrus).
Word Origin and History for estrus Expand. n. 1850, frenzied passion, from Latin oestrus frenzy, gadfly, from Greek oistros gadfly, breeze, sting, mad impulse, perhaps from a PIE *eis, forming words denoting passion (cf. Avestan aeÅ¡ma- anger, Lithuanian aistra violent passion, Latin ira anger).