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http://dx.doi.org/10.5333/KGFS.2008.28.2.107

Effects of Spent Mushroom Substrates Addition on Eating Behavior of Growing Hanwoo  

Lee, Sang-Moo (Department of Animal Science, Kyung-pook National University)
Hwang, Joo-Hwan (Department of Animal Science, Kyung-pook National University)
Yoon, Yong-Bum (Department of Animal Science, Kyung-pook National University)
Kwak, Wan-Sup (School of life resource and environmental science, Konkuk university)
Kim, Young-Il (School of life resource and environmental science, Konkuk university)
Moon, Sang-Ho (School of life resource and environmental science, Konkuk university)
Jeon, Byong-Tae (School of life resource and environmental science, Konkuk university)
Publication Information
Journal of The Korean Society of Grassland and Forage Science / v.28, no.2, 2008 , pp. 107-118 More about this Journal
Abstract
This study was carried out to investigate the effects of dietary supplementation of spent mushroom substrates on eating time, ruminating and resting time of growing Hanwoo. A total of eighteen growing Hanwoo $(357.0{\pm}2.9kg)$ were allocated into three feeding groups and assigned to three dietary treatments: Control (C : concentrate + rice straw; 5.32 kg + intake of free), T1 (concentrate + spent mushroom substrates + rice straw; 5.32 kg +0.82 kg + intake of free) and T2 (concentrate + spent mushroom substrates + rice straw; 5.32 kg + 1.64 kg + intake of free). Intake of rice straw was the highest at C (2.66 kg), while T2 (2.03 kg) was the lowest. But total intake and NDF intake were highly in order of T2 > T1 > C (p<0.05). Eating time was similar in C and T1 with 289.3 and 290.5 minutes, and that in T1 was the shortest with 236.0 minutes (p<0.05). When spent mushroom substrates were increased by 0 (0.0 kg), 15 (0.82 kg) and 30% (1.64 kg) of concentrate, chewing time was decreased linearly from 451.0 and 402.3 to 359.5 minutes (p<0.05), which was due to the particle size of very small feed. Number of bolus, number of chews, number of chews/bolus and FVI (chewing time/intake of feed 1kg) showed the highest to all in C. But ruminating time per bolus was the longest in T2 (69.4 min.), and number of bolus per minute was the highest at T1 (1.07 no.) Eating rate, ruminating efficiency and chewing efficiency were significantly higher (p<0.05) in T1 and T2 than in C, which was due to increased feed intake and the small particle size of spent mushroom substrates. When fed with concentrate, Hanwoo group did united behavior in the all treatment (C, T1 and T2). But group behavior in ruminating and resting was hardly influenced by feeding levels of roughage. Consequently, spent mushroom substrates could be used up to from 15 to 30% in growing Hanwoo roughage source without any harmful effect on eating behavior.
Keywords
Hanwoo; Eating behavior; Spent mushroom substrates;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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