Effect of broad-leaved dock (Rumex obtusifolius L.) on grass silage quality

Stanislav Hejduk, Petr Doležal
2008 Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis  
HEJDUK, S., DOLEŽAL, P.: Eff ect of broad-leaved dock (Rumex obtusifolius L.) on grass silage quality. Acta univ. agric. et silvic. Mendel. Brun., 2008, LVI, No. 5, pp. 75-80 The eff ect of broad-leaved dock (BLD) on nutritive value and fermentation process of grassland fo rages was studied together with the eff ect of formic acid addition (4.0 vs. 2.0 l.t −1 ) and inoculation by lactic acid bacteria (LAB). Herbage of dock exhibits low DM content, crude protein and fi bre contents, yet its NEL
more » ... tents, yet its NEL concentration is low. Despite of the low DM content in BLD silages, the fermentation process was successful, but the si lages show signifi cantly higher contents of lactic acid (176.5 %), acetic acid (198.2 %) and lover pH values (4.24 vs. 4.39) as compared with than the grass silage. Silages made of dock do not contain bu tyric acid and exhibit low rates of proteolysis (9.2 % NH 3 from total N). Addition of formic acid shows in the group of assessed silages signifi cant reduction content of lactic acid (−6.5 %) and acetic acid (−9.3 %) and signifi cant decrease of pH value (−0.05). The use of probiotic preparation leads to signifi cantly higher lactic acid production (+39.3 %) and to lover pH value (−0.23) as compare with control without additions. broad-leaved dock, grassland, nutritive value of herbage, ensiling, silage additives
doi:10.11118/actaun200856050075 fatcat:edcmj7e3fvc35o4izbkdsunjmi