There are 2 ways to prevent females covered.
Passive
Make sure the bitch during heat uncastrated no contact with males. If that were the case then they should certainly not be left alone together. The pants also helps for the bitch part.
Sterilization
If your decision, you bitch to be spayed, of course you make an appointment at the Vet. In most cases, you can dog the morning market, and afternoon pick up again. In general, a sterilization is surely a major surgery, because the dog be put under general anesthetic. It could possibly advance what blood are taken, to see if the liver and kidneys are working properly, it must be the anesthetic agents can remove the body again.
The word on the midline abdomen cut open, after which the ovaries on both sides are tied. Then get everything neatly attached to the inside and outside continue to attach two wires visible. This fix automatically. You can still retrieve the bitch, if she is good at, and receive painkillers to take home. If the dog will lick the wound, is a cap on the head necessary. If the dog will find it a very unpleasant experience, would you rompertje to draw a baby, where you cut a hole in the pack to the tail.
Keep an eye, that bitch gets no bleeding afterwards.
The best time to operate for the first heat, but some Lhasa Apso's very early loops, sometimes already at the age of 6 months. I personally find this too young for a dog of this age has to operate. Even the Lhasa Apso is known, not always for the anesthetic to be, better for gasnarcose to kiezen.Door the first heat for the dog to be sterilized has the advantage that the risk of tumors of the milk gland tissue greatly reduced. The chance to still develop mammary gland tumors is still poor and 0.05% after the first heat 8%. If you leave the female sterilization, and she has already been loops, it is best, and only after 3 months to sterilize. The sex hormones than quiet. Are you already operate, the bitch still apparent after surgery pregnant.
The benefits of sterilization, is that the female can not be accidentally covered.
If the bitch in season, and it sits on the days of coverage, they will try anything to escape and find a male to fertilize her. Therefore it called loops are, the dog goes on the run. It also will no chance that the uterus gets a bitch, and this is common in females not sterilized. The only option then, they must be operated urgently, to still delete everything. Characteristics of a uterine infection include fever and lots of drinking.
The disadvantages of sterilization, that the Lhasa Apso generally get a thicker coat. They are also fat faster. The best is, after the sterilization to 30% less to implement than you did before, otherwise switch to a light feed.
It is therefore wise to not count that bred a bitch to get spayed, even though the operation is a major intervention, the advantages outweigh the disadvantages, and after about 3 days is you bitch again completely refurbished by the operation.