The Labradane is not a purebred dog, thus there is no way to determine exactly what a puppy would weigh. However, a good guess can be made by looking at what parent it resembles the most, since it will probably have inherited most genes from that gene pool.
Since a Labrador can weigh in from 27 to 36 KG (60-80 lb), the puppy would weigh this as a minimum, and a Great Dane can weigh in at over 50 KG, so that would be the maximum weight.
If your puppy if more of a Great Dane than a Labrador, then it will weigh in at about 30-35 KG by seven months, but if it is more of a Labrador, then it will weigh in closer to 15-20 KG. Of course, this is assuming that the puppy is otherwise healthy, and is being fed well.
Since a Labrador can weigh in from 27 to 36 KG (60-80 lb), the puppy would weigh this as a minimum, and a Great Dane can weigh in at over 50 KG, so that would be the maximum weight.
If your puppy if more of a Great Dane than a Labrador, then it will weigh in at about 30-35 KG by seven months, but if it is more of a Labrador, then it will weigh in closer to 15-20 KG. Of course, this is assuming that the puppy is otherwise healthy, and is being fed well.