1- Afshar Mirzaei, A., N. Maheri-Sis. 2008. Nutritive value of some agro-industrial by-products for ruminants- a review. World Journal of Zoology, 3: 40-46.
2- Allen, M. S. 2000. Effects of diet on short-term regulation of feed intake by lactating dairy cattle. Journal Dairy Science, 83: 83:1598-1624.
3- Arjmandi M. Kh., A. Teimouri Yansari. 2011. Effects of alfalfa particle size and soybean oil on digestibility, chewing activity, milk yield and compositions of early lactating holstein cows. Iranian Journal of Animal Science Research, Vol. 3, No. 2, p. 138-149. (in persian)
4- Association of Official Analytical Chemists. 2002. Official method of Analysis. Vol.1. 17 th Ed. AOAC, Arlington, VA. Pages: 120-155.
5- Barrios-Urdaneta, A., M. Fondevila, C. Castrillo. 2003. Effect of supplementation with different proportions of barley grain or citrus pulp on the digestive utilization of ammonia-treated straw by sheep. Animal Science, 76: 309–317.
6- Bampidis, V. A., and P. H. Robinson. 2006. Citrus by-products as ruminant feeds: A review. Animal Feed ScienceTechnology, 128: 175–217.
7- Bayat Koohsar. C., R. Valizadeh., A. A. Naserian., A. Tahmasebi., and F. Safari. 2010. Effects of Barley with DCP in Holstein cows on their performance. Journal Animal Science Research, 2: 148 - 155.(in persian)
8- Broderick, G. A., D. R. Mertens., R. Simons. 2002. Efficacy of carbohydrate sources for milk production by cows fed diets based on alfalfa silage. Journal Dairy Science, 85: 1767–1776.
9- Bueno, M. S., J. E. Ferrari., D. Bianchini., F. F. Leinz., C. F. C. Rodrigues. 2002. Effect of replacing corn with dehydrated citrus pulp in diets of growing kids. Small Ruminant Research, 46: 179–185.
10- Caparra P., F. Foti., M. Scerra., M. C. Sinatra., V. Scerra. 2007. Solar-dried citrus pulp as an alternative energy source in lamb diets: Effects on growth and carcass and meat quality. Small Ruminant Research, 68: 303–311.
11- Das, A., and G. P. Singh. 1999. Effect of different levels of berseem (TRIFOLIUM ALEXANDRINUM) supplementation of wheat straw on some physical factors regulating intake and digestion. Anim. Feed Science Technology, 81: 133-149.
12- Fazaeli, H. 1992. Using citrus pulp in feeding animal. Journal Pajouhesh and Sazandegi, 14, 26-35. (In persian).
13- Fegeros, K., G. Zervas., S. Stamouli., E. Apostolaki. 1995. Nutritive value of dried citrus pulp and its effect on milk yield and milk composition of lactating ewes. Journal Dairy Science, 78: 1116–1121.
14- Fonseca, A. J. M., A. A. Dias-da-Silva., and A. L. G. Lourenco. 2001. Effects of maize and citrus-pulp supplementation of urea-treated wheat straw on intake and productivity in female lambs. Journal. Anim. Science, 73: 123–136.
15- Gholizadeh, H. and A. A. Naserian. 2010. Effects of replacing dried citrus pulp with barley grain on the performance of Iranian Sannen kids. Journal Animal Veterinary Advances, 9:2053-2056.
16- Grant, R. J. 1997. Interactions among forages and non forage fiber sources. Journal Dairy Science, 80: 1438-1446.
17- Grovum, W. L., and W.J. Williams. 1973. Rates of passage of digesta in sheep passage of marker through the alimentary tract and the biological relevance rate-constants derived from changes in concentration of marker in feces. British Journal Nutrition, 30: 313-329.
18- Hannaway, D. B., and C. Larson. 2004. Berseem Clover (TRIFOLIUM ALEXANDRINUM L.). Oregon State University, Species Selection Information System. http://forages. oregonstate.edu/php/fact_sheet_print_legume.php?SpecID=196&use=Forage
19- Kononoff, P. J. 2002. The effect of ration particle size on dairy cows in early lactation. Ph. D. Thesis. The Pennsylvania State University.
20- Krause, M. K., and G. R. Otzel. 2006. Understanding and preventing subacute ruminal acidosis in dairy herds: A review. Animal Feed Science Technology, 126: 215-236.
21- Li, D., G. Lanigan., J. Humphreys. 2011. Measured and simulated nitrous oxide emissions from ryegrass-and ryegrass/white clover-based grasslands in a moist temperate climate. Plos One 6:e26176.
22- Mart´ınez-Pascual, J., and J. Fern´andez-Carmona. 1980. Citrus pulp in diets for fattening lambs. Animal Feed Science Technology, 5: 11–22.
23- Mertens, D. R. 1997. Creating a system for meeting the fiber requirements of dairy cows. Journal Dairy Science, 80: 1463-1481.
24- Miron, J., E. Yosef., D. Ben-Ghedalia., L. E. Chase., D. E. Bauman., R. Solomon. 2002. Digestibility by dairy cows of monosaccharide constituents in total mixed rations containing citrus pulp. Journal Dairy Science, 85: 89–94.
25- O’Mara, F. P., J. E. Coyle., M. J. Drennan., P. Young., and P. J. Caffrey. 1999. A comparison of digestibility of some concentrate feed ingredients in cattle and sheep. Animal Feed Science Technology, 81: 167–174.
26- Oni A. O., C. F. I. Onwuka., O. O. Oduguwa., O. S. Onifade., O. M. Arigbede., J. E. N. Olatunji. 2006. Utilization of citrus pulp based diets and enterolobium cyclocarpum foliage by west African dwarf goats. Journal Animal Veterinary Advances, 5: 814– 818.
27- Pirmohammadi, R., O. Hamidi., and A. Mohsenpur Azari. 2007. Effects of polyethylene glycol (PEG) addition on composition, degradability digestibility of white grape pomace. Journal Animal Veterinary Advances, 6: 1135-1139.
28- Uden, P., E. Colucci., and P. J. Van Soest. 1980. Investigation of chromium, ceribem, and cobalt as marker in digesta rate of passage studies. Journal Science Food Agriculture, 31: 625- 632.
29- Volanis, M., P. Zoiopoulos., and K. Tzerakis. 2004. Effects of feeding ensiled sliced oranges to lactating dairy sheep. Small Ruminant Research, 53, 15–21.
30- Welch, J. G., and A. M. Smith. 1971. Effect of beet pulp and citrus pulp on rumination activity. Journal Animal Science, 33: 472-475.
31- Wing, J. M. 2003. Citrus Feedstuffs for Dairy Cattle. University of Florida, IFAS, 829.