Abdoun K, Stumpff F, Rabbani I and Martens H, 2010. Modulation of urea transport across sheep rumen epithelium in vitro by SCFA and CO2. American Journal of Physiology Gastrointestinal and Liver Physiology 298(2): G190–202.
Agarwal U, Hu Q, Baldwin VIRL, and Bequette BJ, 2014. Role of rumen butyrate in regulation of nitrogen utilization and urea nitrogen kinetics in growing sheep. Journal of Animal Science 93(5): 2382–2390.
Bagnasco SM, 2005. Role and regulation of urea transporters. Pflügers Archiv: European Journal of Physiology 450(4): 217-226.
Broderick GA, 2004. Effect of low-level Monensin supplementation on the production of dairy cows fed alfalfa silage. Journal of Animal Science 87(2):359-368.
Broderick GA, and Kang JH, 1980. Automated simultaneous determination of ammonia and total amino acids in ruminal fluid and in vitro media. Journal of Dairy Science 63(1): 64-75
Diernaes L, Sehested J, Moller PD, and Skadhauge E, 1994. Sodium and chloride transport across the rumen epithelium of cattle in vitro: effect of short-chain fatty acids and amiloride. Experiment Physiology 79(5): 755-762.
Duffield TF, and Bagg RN, 2000. Use of ionophores in lactating dairy cattle. A review. Canadian Veterinary Journal 41(5):388-394.
Gabel G, Vogler S, and Martens H, 1991. Short-chain fatty acids and CO2 as regulators of Na+ and Cl- absorption in isolated sheep rumen mucosa. Journal of Comparative Physiology 161(4): 419-426.
Harmeyer J, and Martens H, 1980. Aspects of urea metabolism in ruminants with reference to the goat. Journal of Dairy Science 63(10): 1707-1728.
Hofmann EM, Muetzel S, and Becker K, 2003. Effects of Moringa oleifera seed extract on rumen fermentation in vitro. Archive of Animal Nutrition 57(1): 65-81.
Kennedy PM, 1980. The effects of dietary sucrose and the concentration of plasma urea and rumen ammonia on the degradation of urea in the gastrointestinal tract of cattle. The British Journal of Nutrition43(1): 125-140.
Lu Z, 2013. Urea transport in sheep rumen epithelium in vitro: Modulation by luminal ammonia and pH. PhD Thesis, The University of Berlin.
Marini JC and Van Amburgh ME, 2003. Nitrogen metabolism and recycling in Holstein heifers. Journal of Animal Science 81(2): 545-552.
Mirzaei-Alamouti H, Moradi S, Shahalizadeh Z, Razavian M, Amanlou H, Harakinejad T, Jafari-Anarkooli I, Deiner C, and Aschenbach JR, 2016. Both Monensin and plant extract alter ruminal fermentation in sheep but only Monensin affects the expression of genes involved in acid-base transport of the ruminal epithelium. Animal Feed Science and Technology 219: 132-143.
Moradi S, 2013. Morphologic and physiologic changes in rumen epithelium of lambs fed diet with Monensin and plant extract. MS thesis, University of Zanjan.
Norton BW, Janes AN and Armstrong DG, 1982. The effects of intra ruminal infusions of sodium bicarbonate, ammonium chloride and sodium butyrate on urea metabolism in sheep. The British Journal of Nutrition 48(2): 265-274.
Pfaffl MW, 2001. A new mathematical model for relative quantification in real-time RT–PCR. Nucleic Acids Research 1; 29(9): e45.
Rahimi H, 2013. Rumen microbial diversity in lambs fed high concentrate diet contained monensin, plant extract and polyunsaturated fatty acids using QRT-PCR. MS thesis, University of Zanjan.
Simmons NL, Chaudhry AS, Graham C, Scriven ES, Thistlethwaite A, Smith CP and Stewart GS, 2009. Dietary regulation of ruminal bovine UT-B urea transporter expression and localization. Journal of Animal Science 87(10): 3288-3299.
Schmidt-Nielsen B and Osaki H, 1958. Renal response to changes in nitrogen metabolism in sheep. Animal Journal of Physiology 193(3): 657-661
Wright DE and Hungate RE, 1967. Amino acid concentrations in rumen fluid. Applied Microbiology15(1): 148-151.
Yang CM and Russell JB, 1993. The effect of monensin supplementation on ruminal ammonia accumulation in vivo and the numbers of amino acid-fermenting bacteria. Journal of Animal Science 71(12): 3470-3476.
)