Effect of cellulolytic Ruminococcus albus KU-F152 and non-cellulolytic Selenomonas ruminantium S137 supplementation on feedlot performance, carcass characteristics and meat quality of Holstein crossbred steers
1 Department of Animal Science, Faculty of Agriculture at Kamphaeng Saen, Kasetsart University, Nakhon Pathom 73140, Thailand.
2 Department of Agriculture Technology, Faculty of Agriculture Technology and Industrial Technology, Nakhon Sawan Rajabhat University, Nakhon Sawan 60000, Thailand.
3 Department of Microbiology, Faculty of Liberal Arts and Science at Kamphaeng Saen, Kasetsart University, Nakhon Pathom 73140, Thailand.
Research Article
World Journal of Advanced Research and Reviews, 2020, 07(02), 105-114
Article DOI: 10.30574/wjarr.2020.7.2.0228
Publication history:
Received on 24 June 2020; revised on 05 August 2020; accepted on 06 August 2020
Abstract:
The effect was determined of cellulolytic Ruminococcus albus KU-F152 and non-cellulolytic Selenomonas ruminantium S137 on the digestibility, feedlot performance, carcass characteristics and meat quality of Holstein crossbred steers. Eight steers were randomly inoculated with R. albus KU-F152 and S. ruminantium S137, and eight steers were used as the non-inoculated control. The steers were fed a Total mixed ration (TMR) diet (21:79 ratio of corn silage and concentrate) that was offered ad libitum for 6 months. The results showed that the inoculation of R. albus KU-F152 and S. ruminantium S137 had no positive effect on the growth performance of Holstein steers; however, the inoculation increased the feed conversion ratio (FCR) compared with the control. The ruminal fermentation results demonstrated that R. albus and S. ruminantium inoculation significantly increased total volatile fatty acid (VFA), levels and increased the marbling score of meat as carcass characteristics. Regarding meat quality characteristics, R. albus and S. ruminantium inoculation increased the meat fat and reduced the thawing loss. Furthermore, the meat of the treatment group had a significantly lower shear force (tender meat) and a lighter colour than that of the non-inoculated control.
Keywords:
Dairy steers; Feedlot; Meat quality; Bacteria supplementation; Ruminococcus albus KU-F152; Selenomonas ruminantium S137
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