[The effect of a monensin-containing bolus on the live weight increase and characteristics of rumen fermentation of growing cattle].
Eight feeding experiments (4 on pasture and indoors each) with 401 growing cattle were carried out in order to measure the influence of a monensin device on daily weight gain. The monensin device effected on the average 7 g (1.4%) and 37 g (4.3%) higher daily weight gain on pasture and indoors resp. (P greater than 0.05). The weight gain of animals varied between 92.5 and 112.5% compared with the unsupplemented groups. The monensin device caused a higher weight gain of easier cattle than of heavier ones (greater than 300 kg body weight). The device has had no significant effect on figures of rumen fermentation. Probably the monensin level delivered from the device (100 +/- 50 mg per animal and day) is to low for heavier cattle.
Karl-Marx-Universität Leipzig, Sektion Tierproduktion und Veterinärmedizin, Wissenschaftsbereich Tierernährungschemie.
G H
GH
Richter
G
G
Flachowsky
C
C
Voigt
W I
WI
Ochrimenko
E
E
Flachowsky
A
A
Hennig
D000818:Animals; D002417:Cattle / Q000254:growth & development* / Q000378:metabolism; D003692:Delayed-Action Preparations; D005260:Female; D005285:Fermentation / Q000187:drug effects*; D008297:Male; D008985:Monensin / Q000008:administration & dosage / Q000494:pharmacology*; D012417:Rumen / Q000187:drug effects* / Q000378:metabolism; D015430:Weight Gain / Q000187:drug effects*
D003692:Delayed-Action Preparations; D008985:Monensin
Untersuchungen zum Einfluss eines monensinhaltigen Bolus auf die Lebendmassezunahme und Kennzahlen der Pansenfermentation wachsender Rinder.