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Title 

Effect of medicinal plant by-products supplementation to total mixed ration on growth performance, carcass characteristics and economic efficacy in the late fattening period of Hanwoo steers

Authors 

S J LeeDo Hyung KimL L GuanS K AhnK W ChoS S Lee

Publisher 

The Asian-australasian Association of Animal

Issue Date 

2015

Citation 

Asian-Australasian Journal of Animal Sciences, vol. 28, no. 12, pp. 1729-1735

Keywords 

Carcass CharacteristicGrowth PerformanceHanwoo SteerMedicinal Plant Byproducts

Abstract 

This study was conducted to evaluate the effect of medicinal plant by-products (MPB) supplementation to a total mixed ration (TMR) on growth, carcass characteristics and economic efficacy in the late fattening period of Hanwoo steers. Twenty seven steers (body weight [BW], 573±57 kg) were assigned to 3 treatment groups so that each treatment based on BW contained 9 animals. All groups received ad libitum TMR throughout the feeding trial until slaughter (from 24 to 30 months of age) and treatments were as follows: control, 1,000 g/kg TMR; treatment 1 (T1), 970 g/kg TMR and 30 g/kg MPB; treatment 2 (T2), 950 g/kg TMR and 50 g/kg MPB. Initial and final BW were not different among treatments. Resultant data were analyzed using general linear models of SAS. Average daily gain and feed efficiency were higher (p0.05) for T1 than control, but there was no difference between control and T2. Plasma albumin showed low-, intermediate- and high-level (p0.05) for control, T1 and T2, whereas non-esterified fatty acid was high-, intermediate- and high-level (p0.05) for control, T1 and T2, respectively. Carcass weight, carcass rate, backfat thickness and rib eye muscle area were not affected by MPB supplementation, whereas quality and yield grades were highest (p0.05) for T1 and T2, respectively. Daily feed costs were decreased by 0.5% and 0.8% and carcass prices were increased by 18.1% and 7.6% for T1 and T2 compared to control, resulting from substituting TMR with 30 and 50 g/kg MPB, respectively. In conclusion, the substituting TMR by 30 g/kg MPB may be a potential feed supplement approach to improve economic efficacy in the late fattening period of Hanwoo steers.

ISSN 

1011-2367

Link 

http://dx.doi.org/10.5713/ajas.15.0290

Appears in Collections

1. Journal Articles > Journal Articles

Registered Date

2019-05-02


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