Effects of preliminary and washout treatments, experimental design, and meat goat breed in a model to evaluate methods of modifying cattle barb wire fence with electric fence strands for goat containment

TitleEffects of preliminary and washout treatments, experimental design, and meat goat breed in a model to evaluate methods of modifying cattle barb wire fence with electric fence strands for goat containment
Publication TypeJournal Article
Year of Publication2013
AuthorsTsukahara, Y, Detweiler, GD, Gipson, TA, Sahlu, T, Burke, JM, Goetsch, AL
JournalJournal of Animal Science
Issue91
Start Page4476
Abstract

Growing meat goats of 4 types (Boer (B) and Spanish (S) of both wethers and doelings) were used to evaluate conditions for a method of testing efficacy of electric fence strand additions to barbed wire fence used for cattle to also contain goats. Animals were allocated to 8 sets, with each set consisting of 5 groups. There was 1 goat of each of the 4 types in a group. One side of 5 2.4 × 3.7 m evaluation pens consisted of barbed wire strands at 30, 56, 81, 107, and 132 cm from the ground. Evaluation pens were adjacent to a pasture with abundant vegetation. 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 were 4 weekly and sequential exposures to evaluation pens: wk 1 - no electric strands; wk 2 - 1 strand at 0 kV; wk 3 - LH; and wk 4 - LH. There were 6 periods for measurements, each separated by 1 wk. During the 1-wk intervals while on pasture, sets were exposed to 1 interval treatment without and another with 2 electric strands (6 kV) positioned next to supplement troughs, to potentially affect familiarity with electrified strands and influence subsequent behavior. All animal sets were used for measurements in period 1 in a completely randomized design (CRD). Four sets were also used in 4 weekly subsequent measurement periods for a 5 × 5 Latin squares (LS). All animal sets were exposed to the same FT in period 6 as in period 1. Behavior in evaluation pens was observed for 1 h with a video surveillance system in the 6 periods. There were no effects of gender and few and minor effects of preliminary and interval treatments. The percentage of animals that exited evaluation pens differed (P