1- Abbasi, D., Y. Rouzbehan., and J. Rezaei. 2012. Effect of harvest date and nitrogen fertilization rate on the nutritive value of amaranth forage (Amaranthus hypochondriacus). Animal Feed Science and Technology, 171: 6-13.
2- Abaza, R. H., J. T. Blake., and E. J. Fisher. 1968. Determination of oxalic acid in plant materials. Journal of the Association of Official Agricultural Chemists, 51: 963-967
3- Adams, R.S., T. McCarty., and L. J. Hutchinson. 1992. Prevention and control of nitrate toxicity in cattle. Pennsylvania State University.
4- Alderman, G., and B. R. Cottrill. 1995. Energy and protein requirements of ruminants. An advisory manual prepared by the AFRC Technical Committee on Responses to Nutrients. United Kingdom: CAB International, Wallingford, Oxon.
5- Allison, M. J., K. A. Dawson., H. M. Cook., and W. R. Mayberry. 1985. Oxalobacter formigenes gen. nov., sp. nov: oxalate-degrading anaerobes that inhabit the gastrointestinal tract. Journal of Arch Microbial, 141: 1-7.
6- AOAC. 1990. Official Methods of Analysis. Association on Official Analytical Chemists, Arlington, VA, USA.
7- Armentano, L. E., T. A. Herrington., and C. E. Polan. 1983. Ruminal degradation of dried brewers grains, wet brewer’s grains, and soybean meal in situ and in vitro. Journal of Dairy Science, 66(Suppl. 1):171(Abstr.).
8- Chapman, H. D., and P. F. Pratt. 1961. Methods of analysis for soils, plants and waters. University of California. Division of Agricultural Sciences.
9- Cheeke, P. R., and J. Bronson. 1979. Feeding trials with Amaranthus grain, forage and leaf protein concentrations. P, 5-11. In Proc. 2nd Amaranth conference, Rodale Research Center, Kutztown, PA. 13-14 September Rodale Press, Emmaus, PA.
10- Cone, J. W., A.H. Van Gelder., E.T. Weerman., and A. M. VanVuuren. 1994. In vitro estimation of rumen fermentable organic matter with rumen fluid and a cell free preparation of rumen fluid. Agriculture Science, 42:343-356.
11- Findlay, A. L. R. 1998. Microbiology of the rumen and small and large intestines. Physiological Laboratory. University of Cambridge.
12- Goering, M. K., and P. J. Van Soest. 1970. Forage fiber analysis (apparatus, reagents, procedures and some applications). Vol. 379. In Agriculture Handbook. USDA Agricultural Research Service. Washington, DC, USA.
13- Jones, R. J. and C. W. Ford. 2006. Some factors affecting the oxalate content of the tropical grass Setaria sphacelata. Australian Journal Expert. Agriculture Animal Husbandry, 12(57): 400-406
14- Kawas, J. R., N. A. Jorgensen., A. R. Hardie., and J. L. Danelon. 1983. Changing in feed value of alfalfa with stage of maturity and concentrate level. Dairy Science, 66 (Suppl. 1): 181.
15- Krishnamoorthy, U., T. V. Muscato., C. J. Sniffen., and P. J. Van Soest. 1982. Nitrogen fractions in selected feedstuffs. Dairy Science, 65: 217-225.
16- Licitra, G., T. M. Hernandez., and P. J. Van Soest. 1996. Standardization of procedures for nitrogen fractionation of ruminant feeds. Animal Feed Science and Technology, 57:347-358.
17- McDonald, P., R. A. Edwards., J. F. D. Greenhalgh., and C. A. Morgan. 1995. Animal Nutrition. Longmans, London.
18- Mugerwa, J. S., and R. Bwabye. 1974. Yield, composition and in vitro digestibility of amaranthus hybridus subspecies incurvatus. Tropical Grass, 8: 49-53.
19- McKenzie, R. A., A. M. Bell., G. J. Storie., F. J. Keenan., K. M.Cornack., and S. G. Grant. 1988. Acute oxalate poisoning of sheep by buffel grass (Cenchrus ciliaris). Australian Veterinary Journal, 65:1-26
20- O’Connor, J. D., C. J. Sniffen., D. G. Fox., and W. Chalupa. 1993. A net carbohydrate and protein system for evaluating cattle diets: IV. Predicting amino acid adequacy. Animal Science, 71: 1298-1311.
21- Radostits, O. M., C. C. Gay., D. C. Blood., and K. W. Hinchcliff. 2000. Veterinary Medicine, 9th Ed. Saunders Company, London, UK
22- Rezaee J., Y. Rouzbehan., and H. Fazaeli. 2009. Nutritive value of fresh and ensiled amaranth (Amaranthus hypochondriacus) treated with different levels of molasses. Animal Feed Science and Technology, 151(1-2): 153-160.
23- Rezaei, J., Y. Rouzbehan., H. Fazaeli., and M. Zahedifar. 2014. Effects of substituting amaranth silage for corn silage on intake, growth performance, diet digestibility, microbial protein, and nitrogen retention and ruminal fermentation in fattening lambs. Journal of Animal Feed Science and Technology, 192: 29-38
24- Rezaei, J., Y. Rouzbehan., M. Zahedifar., and H. Fazaeli. 2015. Effects of dietary substitution of maize silage by amaranth silage on feed intake, digestibility, microbial nitrogen, blood parameters, milk production and nitrogen retention in lactating Holstein cows. Journal of Animal Feed Science and Technology, 202: 32-41
25- Rita, A. T., and D. Knorr. 1985. Amaranth Composition, Properties, and Applications of a Rediscovered Food Crop. Institute of Food Technologies.
26- SAS. 2001. Statistical Analysis System, User’s Guide: Statistics, Version 8.2. SAS Institute, Cary, NC, USA.
27- Sleugh, B. B., K. J. Moore., E. C. Brummer., A. D. Knapp., J. Russell., and L. Gibson. 2001. Forage nutritive value of various amaranth species at different harvest dates. Crop Science, 41: 466-472.
28- Stallknecht, G. F., and J. R. Schulz-Schaeffer. 1993. Amaranth rediscovered. Pp. 211-218. In: J. Janick and J.E. Simon (eds). New Crops. Willey, New York
29- Stordahl, J. L., C. C. Sheaffer., and A. DiCostanzo. 1999. Variety and maturity affect amaranth forage yield and quality. Produce Agricalture, 12: 249-253.
30- Svirskis, A., 2003. Investigation of amaranth cultivation and utilization in Lithuania. Agronomy Research, 1: 253-264.
31- Teutonico, R. A., and D. Knorr. 1985. Amaranth: composition, properties, and applications of a rediscovered food crop. Food Technology, 39: 49-60.
32- Tilley, Y. M. A., and R. A. A. Terry. 1963. A two stage technique for the in vitro digestion of forage crops. British Grass Society, 18: 104-111.
33- Van soest, P. J., J. B. Robertson., and B. A. Lewis. 1991. Methods of dietary fiber, neutral detergent fiber and non-starch polysaccharides in relation to animal nutrition. Dairy Science, 74:3583-3597.
34- Van Soest, P. J., and V. C. Mason. 1991b.The influence of the maillard reaction upon the nutritive value of fibrous feeds. Animal Feed Science and Technology, 32: 45-53
35- Vough, L. R., E. K. Cassel., and S. M. Barao. 1991. Nitrate poisoning in livestock. Animal Agriculture Update Newsletter, 6:7-11. Cooperative Extension Service, University of Maryland, College Park, MD, USA.