1. Effects of dietary glycerol inclusion on growth performance, carcass and meat quality characteristics, glycogen content, and meat volatile compounds in Korean cattle steers
- Author
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Hyun-Jin Kim, Jakyeom Seo, Dohyun Kim, Hyeok Joong Kang, Da Jin Sol Jung, Minsu Kim, Seung Ju Park, Cheorun Jo, M. Y. Piao, Jin Oh Lee, Najmul Haque, and Myunggi Baik
- Subjects
korean cattle steer ,Physiology ,glycerol ,Beef cattle ,Feed conversion ratio ,Article ,Ruminant Nutrition and Forage Utilization ,03 medical and health sciences ,chemistry.chemical_compound ,Rumen ,Animal science ,lcsh:Zoology ,Genetics ,Glycerol ,volatile compounds ,lcsh:QL1-991 ,030304 developmental biology ,chemistry.chemical_classification ,0303 health sciences ,General Veterinary ,Glycogen ,0402 animal and dairy science ,food and beverages ,04 agricultural and veterinary sciences ,040201 dairy & animal science ,Reducing sugar ,chemistry ,feed intake ,Animal Science and Zoology ,Fermentation ,glycogen contents ,carcass and sensory traits ,Energy source ,Food Science - Abstract
Objective: We have tested our hypothesis that inclusion of purified glycerol as a replacer of portions of dried distillers grain with solubles (DDGS) would affect growth performance, rumen fermentation and blood parameters, carcass and sensory traits, reducing sugar and glycogen contents, and volatile compound profiles in longissimus thoracis (LT) in Korean cattle steers.Methods: A total of 20 Korean cattle steers (27.0±0.2 months old; 647±10.5 kg body weight [BW]) were assigned to a conventional control group or a glycerol group (3.17% purified glycerol addition as a replacement for DDGS and molasses). The steers were individually allowed to receive the experimental concentrate at the daily amount of 1.5% of their individual BW and a total 1.0 of kg/d of rice straw twice daily. The feeding trial was conducted for a period of 20 weeks.Results: Glycerol supplementation (GS) increased (p = 0.001) concentrate intake. However, GS did not affect (p>0.05) average daily gain, feed efficiency, and ruminal volatile fatty acid concentrations. GS tended to increase (p≤0.10) serum glucose concentrations at the 16th and 20th weeks. GS decreased (p = 0.001) LT pH. GS did not affect (p>0.05) carcass traits and the chemical or physicochemical compositions, reducing sugar or glycogen contents, sensory traits, and most of volatile compounds in the LT.Conclusion: The inclusion of purified glycerol as a replacement for DDGS in the finishing diet did not affect growth performance, rumen fermentation parameters, and carcass quality in Korean cattle. The purified glycerol could be used as a substitute for other energy sources such as DDGS in beef cattle, depending on the price.
- Published
- 2021