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Effects of Whole Grain Barley Cracked Feed on the Eating Behavior of Hanwoo Steers During Finish Fattening Period

통보리 분쇄 사료 급여가 비육후기 한우 채식행동에 미치는 영향

  • Lee, Sang-Moo (Department of Animal Science, Kyung-Pook National University) ;
  • Choi, Yu-Rak (Department of Animal Science, Kyung-Pook National University)
  • Received : 2010.02.01
  • Accepted : 2010.04.15
  • Published : 2010.04.30

Abstract

This study was carried out to investigate the effect of dietary supplementation of whole grain barley cracked feed on eating behaviors of Hanwoo steers during finish fattening period. Thirty Hanwoo steers (28 months old) were assigned to five dietary treatments: control (C: normal concentrate as a basal diet), and four feeding groups [T1: 10% addition of whole grain barley cracked (WGBC) feed, T2: 20% addition of WGBC, T3: 30% addition of WGBC and T4: 40% WGBC during the finish fattening period, respectively]. The results of eating behaviors for 48 hours are summarized as follows: Total intake (roughage + concentrate) was higher in the order of T4 > T1 > C > T3 > T2 (P<0.05). Eating time was higher in the order of T4 > T3 > C > T1 > T2 (P<0.01). Ruminating time was higher in the order of T4 > T1 > C > T3 > T2 (P<0.05). But resting time was higher in the order of T2 > T1 > C > T3 > T4. The chewing time including eating and ruminating time was higher in the order of T4 > T3 > C > T1 > T2 (P<0.01). Number of bolus, number of total chews, number of chews/bolus and feed value index were highest in T4 (P<0.05). Ruminating time per bolus was highest in C, and T3 was the lowest (P<0.05) as compared to others. Number of bolus per minute was highest in T3, and C is the lowest (P<0.05). Eating rate and chewing efficiency were highest in T2 (P<0.01, 0.05), but ruminating efficiency was higher in T1 than others. The group behavior was higher in the order of resting(78.5%) > ruminating(11.4%) > eating(10.1%). The stand resting of group behavior was higher in the order of T3 > C > T2 > T1 > T4.

Keywords

Hanwoo;Eating behavior;Group behavior;Whole grain barley

Acknowledgement

Supported by : 구미시

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