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Optimized Oral Supplementation Of Vitamins Improves Feed Intake And Rumen Microbial Protein Synthesis In Deoni Cows, Ashwin Kandathil, Srinivas Bandla
Optimized Oral Supplementation Of Vitamins Improves Feed Intake And Rumen Microbial Protein Synthesis In Deoni Cows, Ashwin Kandathil, Srinivas Bandla
Turkish Journal of Veterinary & Animal Sciences
The present study was conducted to optimize oral doses of fat- and water-soluble vitamins in cattle using in vitro gas production model and to ascertain their effects on dry matter intake (DMI), nutrient digestibility, and rumen microbial protein (RMBP) synthesis. Doses optimized using the in vitro model were 3.66, 6.78, 16.3, 41.1, 3.87, 0.323, 4.12, and 0.055 mg/kg DMI, respectively, for thiamine, riboflavin, niacin, pantothenic acid, pyridoxine, biotin, folic acid, and B12 and 500 IU/kg DMI for vitamin K. Thirty-two adult, nonproducing Deoni cows (375 ± 13.4 kg body weight, BW) were randomly divided into four equal groups (n = …
Effects Of Supplementary Nano-Zno On In Vitro Ruminal Fermentation, Methane Release, Antioxidants, And Microbial Biomass, Hassan Riazi, Javad Rezaei, Yousef Rouzbehan
Effects Of Supplementary Nano-Zno On In Vitro Ruminal Fermentation, Methane Release, Antioxidants, And Microbial Biomass, Hassan Riazi, Javad Rezaei, Yousef Rouzbehan
Turkish Journal of Veterinary & Animal Sciences
The effects of nano-ZnO on in vitro ruminal fermentation, methane release, total antioxidant capacity (TAC), and microbial biomass production (MBP) were assessed using an in vitro gas production technique. Treatments included a control diet and diets containing 20, 40, or 60 mg of supplemental Zn per kg dry matter (DM) as ZnO or nano-ZnO. As a result of this study, supplementation of 20 mg of Zn as nano-ZnO, similar to ZnO, decreased methane production and protozoa enumeration but improved (P < 0.05) TAC, MBP, digestibility and truly degraded substrate (TDS). As compared with the control treatment, adding the supplementary Zn had no effect on partitioning factor, MBP efficiency, pH, and ammonia-N (P > 0.05). The diets containing 40 and 60 mg of supplementary Zn, as nano-ZnO or ZnO, had no advantage over the …