Effects of conditions between periods of studies to evaluate electric fence additions to barb wire fence for goat containment

TitleEffects of conditions between periods of studies to evaluate electric fence additions to barb wire fence for goat containment
Publication TypeWeb Article
Year of Publication2013
AuthorsTsukahara, Y, Goetsch, AL, Gipson, TA, Hayes, J, Puchala, R, Sahlu, T
Series TitleJournal of Animal Science
Edition91
Type of Medium(E-Supplement 2)
Abstract

Forty Boer (B, 3.7 ± 0.23 yr and 52 ± 1.4 kg) and 40 Spanish (S) does (3.0 ± 0.21 yr and 36 ± 0.7 kg) were used to evaluate effects of treatments between periods (IT) of a Latin square (LS) on behavior (e.g., pen exit and shock) when exposed to pens with barb wire fence and different electric fence strand additions. Breeds were split into 2 sets with 5 groups of 4 does. Five 2.4 × 3.7 m evaluation pens had 1 side of barb wire strands at 30, 56, 81, 107, and 132 cm from the ground. Fence treatments (FT) were electrified strands (6 kV) at 15 and 43 (LH), 15 and 23 (LM), 15 (L), 23 (M), and 43 cm (H). For adaptation, there was weekly short-term exposure to test pens with different electric fence strand additions (B: wk 1 - no electric strands (NES), wk 2 - NES, wk 3 - 1 strand at 0 kV, wk 4 - 1 strand at 2.5 kV, wk 5 - NES; S: wk 1 - NES, wk 2 - 1 strand at 0 kV, wk 3 - 1 strand at 3 kV, wk 4 - 1 strand at 4 kV). The adaptation scheme differed between breeds based on initial behavior to prevent very low or high levels of exit during the experiment. Behavior was assessed 1 h every 2 wk in the 5 × 5 LS with different FT. In the week between measurements, 1 set of each breed was exposed to a NES test pen (IT-Y) and other sets were not (IT-N). It was thought that periodic exposure to IT-Y might refresh memory of potential pen exit depending on the particular FT. There were interactions (P