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).
Estrus (Brunst): In this phase, the bitch is ready to go â it is also called âStabilityâ because the bitch now stands willingly and turns the rod to the side when an interested male approaches. On average the estrus lasts nine days, varying between three and 21 days depending on the bitch.