TY  - JOUR
TI  - The Eff ect of Total Mix Ration with Xylitol Supplementation on In Vitro
Ruminal Total Gas and Methane Production, Digestion Values, Organic Acids,
Ammonia-Nitrogen, and the Number of Total Protozoa in Dairy Cattle
AB  - Th e study aimed to determine the eff ect of xylitol, added to the dry period total mix ration (TMR) of dairy cattle, on in vitro rumen
fermentation, total gas production, methane production, estimated digestion values, organic acids and ammonia-nitrogen contents and the number of
total protozoa. Xylitol was added to dairy cattle TMR at diff erent rates (0%, 2% 4%, and 8%; dry matter basis). Th e xylitol supplementations at 2 and
4% did not aff ect in vitro total gas production, in vitro methane production, metabolizable energy (ME) and organic matter digestibility (OMd) values
(P>0.05). However, 8% xylitol supplementation decreased in vitro total gas production, in vitro methane production, ME and OMd (P<0.05). Th e
molarities of total volatile fatty acid (TVFA) percentages of acetic acid (AA), propionic acid (PA) and butyric acid (BA) in TVFA, ammonia-nitrogen
concentration, and the number of total ciliate protozoa of the in vitro rumen fl uid of xylitol supplementations at 2%, 4%, and 8% were similar to those
of control TMR (P>0.05). Th e iso-valeric acid (IVA), iso-butyric acid (IBA) and valeric acid (VA) percentages in TVFA of in vitro rumen fl uid linearly
decreased with xylitol supplementation, especially 8% xylitol supplementation (P<0.05). Besides, 2% and 4% xylitol supplementations to dairy cattle
TMR numerically increased the concentration of ammonia-nitrogen and the number of total ciliate protozoa in in vitro fermentation fl uid (P>0.05).
Consequently, the supplementation of 2% and 4% xylitol to dairy cattle ration did not aff ect the in vitro rumen fermentation (total gas production,
methane production, estimated digestion values, organic acids and ammonia-nitrogen parameters). However, 8% supplementation xylitol to dairy
cattle ration had the potential to aff ect the before-mentioned in vitro ruminal fermentation parameters adversely.
AU  - ASLAN, Öznur
AU  - ONEL, SULEYMAN ERCUMENT
AU  - KARA, Kanber
AU  - Soylu, Yıldıray
AU  - ÖZTAŞ, MEHMET AKİF
DO  - 10.9775/kvfd.2021.26614
PY  - 2022
JO  - Kafkas Üniversitesi Veteriner Fakültesi Dergisi
VL  - 28
IS  - 2
SN  - 1300-6045
SP  - 155
EP  - 160
DB  - TRDizin
UR  - http://search/yayin/detay/529929
ER  -