Sear the rib roast (prime rib) for 15 minutes at the higher oven temperature (450 degrees F.), then turn the oven to the lower temperature (325 degrees F.) for the rest of the cooking time. Every 1/2 hour, baste the cut ends of the roast with the fat accumulated in the roasting pan. Do Not Cover the roast.ear the rib roast (prime rib) for 15 minutes at the higher oven temperature (450 degrees F.), then turn the oven to the lower temperature (325 degrees F.) for the rest of the cooking time. Every 1/2 hour, baste the cut ends of the roast with the fat accumulated in the roasting pan. Do Not Cover the roast.
A mother cat can be spayed when her kittens are eating canned food regularly, which is typically when they are between 5-6 weeks old. A mother can be returned to her kittens to nurse them 24-30 hours after spay surgery.
It is best to wait until the kitten is 4-6 months old, although many vets will spay much earlier. Kittens should be spayed and neutered before they reach sexual maturity, whicâ¦h happens around 6 months old. The average age of spaying/neutering is about 4 months, but it can  be done as soon as 8 weeks, while some vets suggest to wait until  the kitten is 6 months old.