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.
The disease is most severe in. 1  lambs/kids 2 to 8 weeks of age. 2  lambs/kids 2 to 3 weeks after weaning. 3  adult sheep and goats moved to a feedlot or experiencing some other form of stress. Signs in live sheep and goats. The first sign is diarrhoea. The back legs are dirty (with droppings) and this may result in blowfly strike. Sheep and goats are depressed and do not eat. They become severely dehydrated and may die. Signs in dead sheep and goats