Effects of vegetable oil and yeast fermented cassava pulp (YFCP) supplementation on feed intake, nutrient digestibility and rumen fermentation in Thai Friesian dairy cows Suphrap N., Wachirapakorn C.*, Thamrongyoswittayakul C.1,,2, Wongnen C. Department of Animal Science, Faculty of Agriculture, Khon Kaen University, Khon Kaen, 40002, Thailand 1Research Group of Animal Health Technology, Faculty of Veterinary Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand 2Devision of Livestock Medicine, Faculty of Veterinary Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand *Corresponding author's e-mail: chal_wch@kku.ac.th
Online published on 1 August, 2019. Abstract This study was conducted to investigate the effect of vegetable oil and yeast fermented cassava pulp (YFCP) supplementation on feed intake, nutrient digestibility and rumen fermentation in Thai Friesian dairy cows (Thai native x Holstein Friesian). Eight Thai Friesian dairy cows (447±44 kg. BW) were assigned to 4×4 double latin square design (DLSD) with two sources of oil i.e. palm oil (PO) or soybean oil (SBO) and four levels of YFCP (0, 5, 10 and 20%DM) in the dietary treatments. All cows received total mixed ration (TMR) comprised of rice straw to concentrate at a ratio of 40: 60. The results showed that supplementation of SBO had lowered feed intake, nutrients digestibility, metabolize energy intake (MEI), total digestible nutrient (TDN) and methane emission than PO treatment. However, cows received SBO had greater total volatile fatty acid (TVFA), propionic acid (C3), butyric acid (C4) than cows received on PO (P<0.05). In addition, supplementation of YFCP at 10%DM in the diet as an optimum level in dairy cow diets (P>0.05). Finally, the interaction between the addition of SBO and YFCP at 10%DM (SBO+YFCP) had a positive effect on enhancing ether extract intake (EEI) in dairy cows. Top Keywords Cassava pulp fermented yeast, Cow, Digestibility, Oil, Rumen fermentation. Top |