View Full Document. ï¬ 1  Primers determine the specificity of the PCR reaction. ï¬ The distance between the primer binding sites will determine the size of the PCR product. 2  T m ï¬ For short (14â20 bp) oligomers: ï¬ T m = 4Â° (GC) + 2Â° (AT)
Estrus, or heat, is the period in which the doe will stand and allow the buck to breed her. This phase of the reproductive cycle may last between 12 to 36 hours. The period from one heat cycle to the next is referred to as the estrous cycle. In goats, the estrous cycle occurs every 18 to 24 days, or 21 days on average.
Some facts about goat breeding cycles: 1  Male goats can breed as young as 7 weeks old. This doesnât mean that they should be bred, but itâs definitely possible for him to get his sister and mother pregnant, so itâs important to remove bucks from females at 7 weeks old! 2  Male goats (called bucks) can breed pretty much any time. They are ready to go 24-7, except in extreme weather conditions. They wonât breed, however, just for fun. Theyâll only breed when they can smell that the female is in âheatâ.