<b>Propolis-based product (LLOS) in the diet of feedlot bulls: animal behavior and blood responses</b> - doi: 10.4025/actascianimsci.v33i1.10671

Abstract

The behavior and blood responses of feedlot animals fed diets containing a propolis-based product (LLOS) were evaluated. The treatments were control (CON) and two propolis-based products (LLOSC1 and LLOSC1+). The measured behaviors were: eating (EAT), drinking water (DRI), walking (WAL), ruminating on standing (RUST), lying rumination (LYR), standing (STA) and lying (LYI). More time was spent in the morning (MO) and afternoon (AFT) for EAT, DRI, WAL, RUST and STA and in the evening (EV) and overnight (ON) for RUST and LYI. Animals on Side 1 of the feedlot spent more time walking in MO and EV, with no differences for ON, and more time STA for animals in Side 1 in MO, AFT and ON, and equal in EV. Cortisol, glucose and urea were not affected by treatments. No effects of treatments were observed for hemoglobin, hematocrit, MCV, MCH, MCHC and IgG, and the content of erythrocyte was higher in LLOSC1 and LLOSC1+ than in the CON. Animals receiving LLOSC1+ showed higher values of leukocytes, segments, lymphocytes, and monocytes than CON. The propolis-based diet did not affect biochemical, erythrocyte and immune parameters, but increased leukocytes. The position of the feedlot was important in the behavior of animals.