
Dan Morrical was responsible for educational programs in all areas of sheep production, ranging from nutrition, genetics, marketing and management.
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He held the rank of Full Professor as of Jand retired from full-time teaching in 2017. Higher output requires more ground rods, underground cables, multiple output terminals, etc.ĭan Morrical joined the Iowa State University staff in 1984 as Extension Sheep Specialist after completing his doctorate degree at New Mexico State University.
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Remember, all fences must be kept free of vegetation.

Pos/Neg fences can be converted to Pos/Pos in moist conditions. This will deliver more pain to the animal than an all hot net (Pos/Pos) because moisture in the soil is not required to complete the circuit.

In order to receive a shock, the animal must touch both a positive (hot) and negative (grounded) strand at the same time. A PowerLink must be purchased separately to make the secondary ground connection. Because half the strands are connected to the ground terminal or ground rod, reliance on soil moisture is reduced. To overcome this, Pos/Neg nets* are wired to allow the use of every other horizontal strand as an extension of the ground terminal. However, not all areas have the required moisture.ĭry soil increases resistance-a weaker, less effective pulse occurs that does not deter animals. × About Positive/Negative (Pos/Neg) Nets Is your area dry?Ĭonventional electrified fence systems rely on soil moisture to be effective.
