She is in heat, what next to breed successfully??

Question
My german shepard has started bleeding and is obviously in heat. When is the best time to put her with a male and for how long?  

Answer
RHONDA,
I COUNT THE VERY FIRST DAY I SEE A SPECK OF BLOOD AS DAY ONE.  THEN COUNT TO DAY 13 AND TRY HER WITH A GOOD STUD DOG.  I ONLY BREED MY GIRLS ON DAYS 14 AND 16 AND SOMETIMES ONE TIME ON DAY 16.  I GET BETTER LITTERS LATER BREEDINGS OR TIES.  DO NOT LEAVE HER WITH THE STUD ONLY LONG ENOUGH FOR  A TIE, WRITE DOWN THE LENGHT OF IT AND DAY ONE OF FIRST TIE.  THEN SOME 63 DAYS SHE SHOULD BE IN WHELP.

KIND REGARDS
PATT
WWW.SCHREKNHAUS.COM
FEED HER PUPPY FOOD DURING THE PREGNANCY AND AFTER AND PLENTY OF FRESH WATER.  FEED 3 TO 4 TIMES A DAY DEPENDING ON THE SIZE OF LITTER, I AM FEEDING AND CARING FOR 17 PUPS RIGHT NOW.  SEE MY LITTER PAGE.