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1. Adin G, Solomon R, Nikbachat M, Zenou A, Yosef E, Brosh A, Shabtay A, Mabjeesh SJ, Halachmi I, Miron J. 2009. Effect of feeding cows in early lactation with diets differing in roughage-neutral detergent fiber content on intake, behaviour, rumination, and milk production. J Dairy Sci. 92:3364-3373.

2. Amenu B, Cowan RT, Deeth HC. 2004. Impact of forage quality and heat stress on milk composition and cheddar cheese yield. Anim Prod Australia. 25:5-8.

3. Andrade MER, Araujo RS, Barros PAV, de Soares ADN, Abrantes FA, Generoso S, de V. Fernandes SOA, Cardoso VN. 2015. The role of immunomodulators on intestinal barrier homeostasis in experimental models. Clinical Nut. 34:1080-1087.

4. Appuhamy JADRN, Wagner-Riddle C, Casper DP, France J, Kebreab E. 2014. Quantifying body water kinetics and fecal and urinary water output from lactating Holstein dairy cows. J Dairy Sci. 97:6177-6195

5.Attebery JT, Johnson HD. 1969. Effects of environmental temperature, controlled feeding and fasting on rumen motility. J Anim Sci. 29:734-737.

6. Bach A, Iglesias C, Devant M. 2007. Daily rumen pH pattern of loose-housed dairy cattle as affected by feeding pattern and live yeast supplementation. Anim Feed Sci Technol. 136:146-153.

7. Baldwin RL, Smith NE, Taylor J, Sharp M. 1980. Manipulating metabolic parameters to improve growth rate and milk secretion. J Anim Sci. 51:1416.

8. Baumgard LH, Abuajamieh MK, Stoakes SK, Sanz-Fernandez MV, Johnson JS, Rhoads RP. 2014. Feeding and Managing Cows to Minimize Heat Stress. Proc. Tri-State Dairy Nutrition Conference, 61-74.

9. Beede DK, Collier RJ. 1986. Potential nutritional strategies for intensively managed cattle during thermal stress. J Anim Sci. 62:543-554.

10. Belibasakis NG, Ambatzidis P, Aktsali P, Tsirgogianni DT. 1995. Effects of degradability of dietary protein on milk production and blood components of dairy cows in hot weather. World Rev Anim Prod. 30:21-26

11. Berman A. 2006. Extending the potential of evaporative cooling for heat-stress relief. J Dairy Sci. 89:3817-3825.

12. Berman A. 2011. Invited review: Are adaptations present to support dairy cattle productivity in warm climates? J Dairy Sci. 94:2147-2158.

13. Bernabucci U, Bani P, Ronchi B, Lacetera N, Nardone A. 1999. Influence of Short- and Long-Term Exposure to a Hot Environment on Rumen Passage Rate and Diet Digestibility by Friesian Heifers. J Dairy Sci. 82:967-973.

14. Bernabucci U, Lacetera N, Ronchi B, Nardone A. 2009. Influence of different periods of exposure to hot enviroment on rumen function and diet digestibility in sheep. Int J Biometeorol. 53:387-395.

15. Bernabucci U, Lacetera N, Baumgard LH, Rhoads RP, Ronchi B, Nardone A. 2010. Metabolic and hormonal acclimatation to heat stress in domesticated ruminants. Animal. 4:1167-1183.

16.Bernabucci U, Lacetera N, Ronchi B, Nardone A. 2002. Effects of the hot season on milk protein fractions in Holstein cows. Anim Res. 51:25-33.

17. Bernabucci U. 2012. Impact of hot environment on nutrient requirements. In: Environmental physiology of livestock. R.J. Collier and J.L. Collier. John Wiley & Sons, Inc.

18. Brigelius FR, Traber MG. 1999. Vitamin E: function and metabolism. The FASEB J. 13:1145-1155.

19. Bruno RG, Rutigliano SHM, Cerri RL, Robinson PH, Santos JEP. 2009. Effect of feeding Saccharomyces cerevisiae on performance of dairy cows during summer heat stress. Anim Feed Sci Technol. 150:175-186.

20. Bunting LD, Sticker IS, Wozniak PJ. 1992. Ruminal escape protein and fat enhance nitrogen utilization of lambs exposed to elevated ambient temperatures. J Anim Sci. 70:1518-1525.

21. Bunting LD, Fernandez JM, Fornea RJ, White TW, Froetschel MA, Stone JD, Ingawa K. 1996. Seasonal effects of supplemental fat or undegradable protein on the growth and metabolic of Holstein calves. J Dairy Sci. 79:1611-1620.

22. Calamari L, Maianti MG, Amendola F, Lombardi G. 1999. On some aspects of the oxidative status and on antioxidants of dairy cows during summer. Proceedings of the A.S.P.A. XIII Congress, 21-24 June, Piacenza, 449-451. Ed. Franco Angeli, Milano, Italy.

23. Calamari L, Lombardi G, Maianti MG, Calegari F, Stefanini L. 2001. Effect of energy supplementation and protein source on milk production of dairy cows in warm season. Proc. XIV ASPA Nat. Congr., 12-15 June, Firenze (Italy), 123-125

24. Calamari L, Abeni F, Calegari F, Stefanini L. 2007. Metabolic conditions of lactating Friesian cows during the hot season in the Po valley. 2. Blood minerals and acid-base chemistry. Int J Biometeorol. 52:97-107.

25. Calamari L, Petrera F, Abeni F, Bertin G. 2011. Metabolic and hematological profiles in heat stressed lactating dairy cows fed diets supplemented with different selenium sources and doses. Liv Sci. 142:128-137.

26. Calamari L, Petrera F, Stefanini L, Abeni F. 2013. Effects of different feeding time and frequency on metabolic conditions and milk production in heat-stressed dairy cows. Int J Biometeorol. 57:785-796.

27. Campbell JM, Murphy MR, Christensen RA, Overton TR. 1994. Kinetics of niacin supplements in lactating dairy cows. J Dairy Sci. 77:566-575.

28. Caroprese M, Albenzio M, Marino R, Santillo A, Sevi A. 2013. Dietary glutamine enhances immune responses of dairy cows under high ambient temperature. J Dairy Sci. 96:3002-3011.

29. Chan SC, Huber JT, Chen KH, Simas JM, Wu Z. 1997. Effects of ruminally inert fat and evaporative cooling on dairy cows in hot environmental temperatures. J. Dairy Sci. 80:1172-1178.

30. Chase L.E. 2006. Climate change impacts on dairy cattle. Fact sheet, Climate Change and Agriculture: Promoting Practical and Profitable Responses. Online at

31. Collier R.J., Dahl G.E., Van Baale M.J. 2006. Major advances associated with environmental effects on dairy cattle. J Dairy Sci. 89:1244-1253.

32. Coppock CE, West JW. 1986. Nutritional adjustment to reduce heat stress in lactating dairy cows. In: Proc Georgia Nutr Conf Feed Industry, Atlanta. Univ. Georgia, GA USA. 19-62.

33. Christopherson RJ. 1985. The thermal environment and the ruminant digestive system. In: MK Youself, editor. Stress physiology in livestock, vol I. CRC, Boca Raton (FL). P 163-180.

34. Diesel B, Kulhanek-Heinze S, Höltje M, Brandt B, Höltje HD, Vollmar AM, Kiemer AK. 2007. α-Lipoic acid as a directly binding activator of the insulin receptor: protection from hepatocyte apoptosis. Biochem. 46:2146-55.

35. Dokladny K, Moseley PL, Ma TY. 2006. Physiologically relevant increase in temperature causes an increase in intestinal epithelial tight junction permeability. Amer J Physiol - Gastr Liver Physiol. 290. G204-G212.

36. Drackley JK, Cicela TM, LaCount DW. 2003. Responses of primiparous and multiparous holstein cows to additional energy from fat or concentrate during summer. J. Dairy Sci. 86:1306-1314.

37. Ferraretto LF, Shaver RD, Bertics SJ. 2012. Effect of dietary supplementation with live-cell yeast at two dosages on lactation performance, ruminal fermentation, and total tract nutrient digestibility in dairy cows. J Dairy Sci. 95:4017-4028.

38. Gaughan JB, Mader TL. 2009. Effects of sodium chloride and fat supplementation on finishing steers exposed to hot and cold conditions. J Anim Sci. 87:612-621.

39. Gengler WR, Martz FA, Johnson HD. 1970. Effect of temperature on food and water intake and rumen fermentation. J Dairy Sci. 53:434-437.

40. Girard CL, Lapierre H, Matte JJ, Lobley CE. 2005. Effect of dietary supplements of folic acid and rumen protected methionine on lactational performance and folate metabolism of dairy cows. J Dairy Sci. 88:660-670

41. Grant RJ, Albright JL. 2000. Feeding behaviour. In Farm animal metabolism and nutrition. Ed. D’Mello JPF, 365-382. ACB International, Wallingford, Oxon, UK.

42. Hahn GL, Mader L, Eigenberg A. 2003. Perspective on development of thermal indices for animal studies and management. EAAP Technic series. 7:31-44.

43. Hales JRS, Bell AW, Fawcett AA, King RB. 1984. Redistribution of cardiac and skin AVA activity in sheep during exercise and heat stress. J Thermal Biol. 9:113-116.

44. Hall DM, Baumgardner KR, Oberley TD, Gisolfi CV. 1999. Splanchnic tissues undergo hypoxic stress during whole body hyperthermia. Am J Physiol. 276:1195-1203.

45. Hall DM, Buettner GR, Oberley LW, Xu L, Matthes RD, Gisolfi CV. 2001 Mechanisms of circulatory and intestinal barrier dysfunction during whole body hyperthermia. Am J Physiol. 280:509-521.

46. Hamiel CR, Pinto S, Hau A, Wischmeyer PE. 2009. Glutamine enhances heat shock protein 70 expression via increased hexosamine biosynthetic pathway activity. Am J Physiol Cell Physiol. 297:1509-1519.

47. Han ZY 2009. The effects of rumen-protected methionine on production performance of dairy cows, lymphocyte apoptosis and related gene under heat stress. Chinese J Anim Nutr. 21:665-672

48. Higginbotham GE, Bath D, Butler LJ. 1993. Effect of feeding an Aspergillus oryzae extract on milk production and related responses in a commercial dairy herd. J Dairy Sci. 76:1484-1489.

49. Holter JB, Hayes HH, Urban WE Jr., Duthie AH. 1992. Energy balance and lactation response in Holstein cows supplemented with cottonseed with or without calcium soap. J Dairy Sci. 75:1480-1494.

50. Huber JT, Higginbotham G, Gomez-Alarcon RA, Taylor RB, Chen KH, Chan SC, Wu Z. 1994. Heat stress interactions with protein, supplemental fat, and fungal cultures. J Dairy Sci. 77:2080-2090.

51. Kadzere CT, Murphy MR, Silanikove N, Maltz E. 2002. Heat stress in lactating dairy cows: A review. Liv Produc Sci. 77:59-91.

52. Kamal TH, Johnson HD. 1970. Whole body 40K loss as a predictor of heat tolerance in cattle. J Dairy Sci. 53:1734-1738.

53. Kanjanapruthipong J, Homwong N, Buatong N. 2010. Effects of prepartum roughage neutral detergent fiber levels on periparturient dry matter intake, metabolism, and lactation in heat-stressed dairy cows. J Dairy Sci. 93:2589-2597.

54. Khelil-Arfa H, Faverdin P, Boudon A. (2014) Effect of ambient temperature and sodium bicarbonate supplementation on water and electrolyte balances in dry and lactating Holstein cows. J Dairy Sci. 97:2305-2318.

55. Khorsandi S, Riasi A, Khorvash M, Mahyari SA, Mohammadpanah F, Ahmadi F. 2016. Lactation and reproductive performance of high producing dairy cows given sustained-release multi-trace element/vitamin ruminal bolus under heat stress condition. Liv Sci. 187:146-150.

56. Knapp M, Grummer RR. 1991. Response of lactating dairy cows to fat supplementation during heat stress. J Dairy Sci. 74:2573-2579.

57. Kronfeld DS, Donoghue S, Naylor JM, Johnson K, Bradley CA. 1980. Metabolic effects of feeding protected tallow to dairy cows. J Dairy Sci. 63:545-552.

58. Kume S, Nonaka K, Oshita T, Kokazai T. 2010. Evaluation of drinking water intake, feed water intake and total water intake in dry and lactating cows fed silages. Liv Sci. 128:46-51.

59. Lambert GP. 2009. Stress-induced gastrointestinal barrier dysfunction and its inflammatory effects. J Anim Sci. 87:E101-E108.

60. Lanham JK, Coppock CE, Milam KZ, Labore JM, Nave DH, Stermer RA, Brasington CF. 1986. Effects of drinking water temperature on physiological responses of lactating Holstein cows in summer. J Dairy Sci. 69:1004-1012.

61. Lin H, Wang LF, Song JL, Xie YM, Yang QM. 2002.  Effect of dietary supplemental levels of Vitamin A on egg production and immune responses of heat-stressed laying hens. Poultry Sci. 81:458-465.

62. Lin H, Cao ZJ, Wang L 2009. Responses of milk protein and mammary amino acids metabolism to duodenal soybean small peptides and free amino acids infusion in lactating goat. J Dairy Sci. 92(E-suppl 1):47

63. Liu DY, He SJ, Jin EH, Liu SQ, Tang YG, Li SH, Zhong LT. 2013. Effect of daidzein on production performance and serum antioxidative function in late lactation cows under heat stress. Liv Sci. 152:16-20.

64. Liu F, Cottrell JJ, Furness JB, Rivera LR, Kelly FW, Wijesiriwardana U, Pustovit RV, Fothergill LJ, Bravo DM, Celi P, Leury BJ, Gabler NK, Dunshea FR. 2016. Selenium and vitamin E together improve intestinal epithelial barrier function and alleviate oxidative stress in heat-stressed pigs. Exp Physiol. 101.7:801-810.

65. Lobley CG, Connell A, Buchan V 1987. Administration of testosterone to wether lambs: effect on protein and energy metabolism and growth hormone status. J Endocrinol. 115:439.

66. Lough DS, Beede DK, Wilcox CJ. 1990. Effects of feed intake and thermal sresson mammary blood flow and other physiological measurements in lactating dairy cows. J Dairy Sci. 73:325-322.

67. Mathers JC, Baber RP, Archibald RF. 1989. Intake, digestion and gastro-intestinal mean retention time in Asiatic buffaloes and Ayrshire cattle given two contrasting diets and housed at 20 °C and 33 °C. J Agric Sci Camb. 113:211-222.

68. McDowell RE, Moody EG, Van Soest PJ, Lehmann RP. 1969. Effect of heat stress on energy and water utilization of lactating cows. J Dairy Sci. 52:188-194.

69. McDowell RE. 1972. The animal body in warm environment. In: Improvement of livestock production in warm climates. W.H.  Freeman and Co, San Francisco, p. 65.

70. Miaron JOO, Christopherson RJ. 1992. Effect of prolonged thermal exposure on heat production, reticular motility, rumen-fluid and particulate passage-rate constants, and apparent digestibility in steers. Can J Anim Sci. 72:809-819.

71. Milam KZ, Coppock CE, West JW, Lanham JK, Nave DH, Labore JM, Stermer RA, Brasington CF. 1986. Effects of drinking water temperature on production responses in lactating Holstein cows in summer. J Dairy Sci. 69:1013-1019.

72. Miron J, Adin G, Solomon R, Nikbachat M, Zenou A, Shamay A, Brosh A, Mabjeesh SY. 2008. Heat production and retained energy in lactating cows held under hot summer conditions with evaporative cooling and fed two rations differing in roughage content and in vitro digestibility. Animal. 2:843-848.

73. Mirzaei M, Ghorbani GR, Khorvash M, Rahmani HR, Nikkhah A. 2011. Chromium improves production and alters metabolism of early lactation cows in summer. J Anim Physiol Anim Nutr. 95:81-89.

74. Moallem U, Lehrer H, Livshitz L, Zachut M, Yakoby S. 2009. The effects of live yeast supplementation to dairy cows during the hot season on production, feed efficiency, and digestibility. J Dairy Sci. 92:343-351.

75. Moallem U, Altmark G, Lehrer H, Arieli A. 2010. Performance of high-yielding dairy cows supplemented with fat or concentrate under hot and humid climates. J Dairy Sci. 93:3192-3202.

76. Morrison RS. 1983. Ruminant heat stress: effect on production and means of alleviation. J Anim Sci. 57:1594-1600.

77. Murphy MR (1992) Water metabolism of dairy cattle. J Dairy Sci. 75:326-333.

78. Nichols JR, Schingoephe DJ, Maiga HA, Brouk MJ, Piepenbrink MS 1998. Evaluation of corn distillers grains and ruminally protected lysine and methionine for lactating dairy cows. J Dairy Sci. 81:482-491.

79. O’Kelly JC. 1987. Influence of dietary fat on some metabolic responses of cattle to hyperthermia induced by heat exposure. Compl Biochem Physiol. 87:677-682.

80. Olsson K, Josater-Hermelin M, Hossaini-Hillali J, Cvek K, Hydbring E, Dahlborn K. 1995. Heat stress causes excessive drinking in fed and food deprived pregnant goats. Comp Biochem Physiol.  A 110 (04):309-317.

81. Ominski KH, Wittenberg KM, Kennedy AD, Moshtaghi-Nia SA. 2003. Physiological and production responses when feeding Aspergillus oryzae to dairy cows during short-term, moderate heat stress. Anim Sci. 77:485-490.

82. Osborne VR. 2006. Water, the forgotten nutrient. WCDS Adv Dairy Technol. 18:197-210.

83. Pan L, Bu DP, Wang JQ, Cheng JB, Sun XZ, Zhou LY, Qin JJ, Zhang XK, Yuan YM. 2014. Effects of Radix bupleuri extract supplementation on lactation performance and rumen fermentation in heat-stressed lactating Holstein cows. Anim Feed Sci Technol. 187:1-8.

84. Petrera F, Gallo A, Maianti MG, Calamari L. 2006. Comportamento alimentare delle bovine da latte nelle stagioni e relazione con la produzione di latte. Atti Soc Ital di Buiatria 1/06, 99-110.

85. Piva G, Belladonna S, Fusconi G, Sicbaldi F. 1993. Effects of yeast on dairy cow performance, ruminal fermentation, blood components, and milk manufacturing properties. J Dairy Sci. 76:2717-2722.

86. Pompeu LB, Williams JE, Spiers DE, Weaber RL, Ellersieck MR, Sargent KM, Feyerabend NP, Vellios HL, Evans F. 2011. Effect of Ascophyllum nodosum on alleviation of heat stress in dairy cows. Prof Anim Scientist. 27:181-189.

87. Reynolds CK, Tyrrell HF, Reynolds PJ. 1991. Effects of diet forage-to-concentrate ratio and intake on energy metabolism in growing beef heifers: Whole body energy and nitrogen balance and visceral heat production. J Nutr. 121:994−1003.

88. Rhoads RP, Baumgard LH, Suagee JK, Sanders SR. 2013. Nutritional Interventions to Alleviate the Negative Consequences of Heat Stress. Adv Nutr. 4:267-276.

89. Ronchi B, Bernabucci U, Lacetera N, Verini Supplizi A, Nardone A. 1999. Distinct and common effects of heat stress and restricted feeding on metabolic status of Holstein heifers. Zoot Nutr Anim. 25:11-20.

90. Sanchez WK, McGuire MA, Beede DK. 1994. Macromineral nutrition by heat stress interactions in dairy cattle: review and original research. J Dairy Sci. 77:2051-2079.

91. Senn M, Gross-Lüem S, Kaufmann A, Langhans W. 1996. Effect of water deprivation on eating patterns of lactating cows fed grass and corn pellets ad lib. Physiol Behavior. 60:1413-1418.

92. Shiao TF, Chen JC, Yang DW, Lee SN, Lee CF, Cheng WTK. 2011. Feasibility assessment of a tunnel-ventilated, water-padded barn on alleviation of heat stress for lactating Holstein cows in humid area. J Dairy Sci. 94:5393–5404.

93. Shwartz G, Rhoads ML, Dawson KA, VanBaale MJ, Rhoads RP, Baumgard LH. 2009. Effects of a supplemental yeast culture on heat stressed lactating Holstein cows. J Dairy Sci. 92:935-942.

94. Silanikove N. 1985. Effect of dehydration on feed intake and dry matter digestibility in desert (black Bedouin) and non-desert (Swiss Saanen) goats fed on lucerne hay. Comp Biochem Physiol A. 80:449-452.

95. Silanikove N 1992. Effects of water scarcity and hot environment on appetite and digestion in ruminants: a review. Liv Prod Sci. 30:175-194.

96. Silanikove N. 2000. Effects of heat stress on the welfare of extensively managed domestic ruminants. Liv Prod Sci. 67:1-18.

97. Silanikove N, Tagari H, Shkolnik A 1993. Comparison of rate of passage, fermentation rate and efficiency of digestion of high fiber diet in desert Bedouin goats compared to Swiss Saanen Goats. Small Rum Res. 12:45-60.

98. Skaar TC, Grummer RR, Dentine MR, Stauffacher RH. 1989. Seasonal effects of prepartum and postpartum fat and niacin feeding on lactation performance and lipid metabolism. J Dairy Sci. 72:2028-2038.

99. Sonn L, Fujita J, Gaffin SL 2002 Invited review: effects of heat and cold stress on mammalian gene expression. J Appl Physiol. 92:1725-1742.

100. Sordillo LM, Shafer-Weaver K, DeRosa D. 1997. Immunobiology of the mammary gland. J Dairy Sci. 80:1851-1865.

101. Soriani N, Panella G, Calamari L. 2013. Rumination time during the summer season and its relationships with metabolic conditions and milk production. J Dairy Sci, 96:5082-5094.

102. Steiger Burgos M, Senn M, Sutter F, Kreuzer M, Langhans W. 2001. Effect of water restriction on feeding and metabolism in dairy cows. Am J Physiol Reg Int Comp Physiol. 280:R418-R427.

103. Stermer RA, Brasington CF, Coppock CE, Lanham JK, Milam KZ. 1986. Effect of drinking water temperature on heat stress of dairy cows. J Dairy Sci. 69:546-551.

104. Surai PF. 2006. Selenium in food and feed, selenomethionine and beyond. In: Surai, PF (Ed.), Seleniumin Nutrition and Health. Nottingham University Press, Nottingham, UK, pp. 151-212.

105. Tahmasbi AM, Kazemi M, Moheghi MM, Bayat J, Shahri AM. 2012. Effects of selenium and vitamin E and night or day feeding on performance of Holstein dairy cows during hot weather. J Cell Anim Biol. 6:33-40.

106. Thatcher WW, Collier RJ. 1982. Effect of heat on animal productivity. In: M. Rechcigl, Jr, editor. Handbook of Agricultural Productivity, Vol.II. Boca Raton, FL: CRC Press, Inc. p.77-105.

107. Tyrrell HF, Reynolds PJ, Moe PW. 1979. Effect of diet on partial efficiency of acetate use for body tissue synthesis by mature cattle. J Anim Sci. 48:598-606.

108. Van Nevel CJ, Demeyer DI. 1988. Manipulation of rumen fermentation. In: PN Hobson, editor. The rumen microbial ecosystem. London: Elsevier Appl. Science, 387.

109. Wang JP, Bu DP, Wang JQ, Huo XK, Guo TJ, Wei HY, Zhou LY, Rastani RR, Baumgard LH, Li FD. 2010. Effect of saturated fatty acid supplementation on production and metabolism indices in heat-stressed mid-lactation dairy cows. J. Dairy Sci. 93:4121-4127.

110. Warntjes JL, Robinson PH, Galo E, DePeters EJ, Howes D. 2008. Effects of feeding supplemental palmitic acid (C16:0) on performance and milk fatty acid profile of lactating dairy cows under summer heat. Anim. Feed Sci. Techn. 140:241-257.

111. Weniger JH, Stein M. 1992. Einfluss von ungebungstemperatur und luftfeuchte auf die nahrstoffverdaulichkeit beim Schaf. 1. Problemstellung, durchfuhfung der untersuchungen, verdaulichkeit. Zuchtungskunde. 64:148-155.

112. West JW. 1999. Nutritional strategies for managing the heat-stressed dairy cow. J Anim Sci. 77:21-35.

113. West JW, Hill GM, Mandebvu P, Fernandez JM, Mullinix BG. 1999. Effects of dietary fiber on intake, milk yield and digestion by lactating dairy cows during cool or hot, humid weather. J Dairy Sci. 82:2455-2465.

114. West JW, Mullinix BG, Bernard JK. 2003. Effects of hot, humid weather on milk temperature, dry matter intake and milk yield of lactating dairy cows. J Dairy Sci. 86:232-242.

115. Yu P, Huber JT, Theurer CB, Chen KH, Nussio LG, Wu Z. 1997. Effect of steam-flaked or steam-rolled corn with or without Aspergillus oryzae in the diet on performance of dairy cows fed during hot weather. J Dairy Sci. 80:3293-3297.

116. Zimbelman RB, Baumgard LH, Collier RJ. 2010. Effects of encapsulated niacin on evaporative heat loss and body temperature in moderately heat-stressed lactating Holstein cows. J Dairy Sci. 93:2387-2394.

117. Zimbelman RB, Collier RJ, Bilby TR. 2013. Effects of utilizing rumen protected niacin on core body temperature as well as milk production and composition in lactating dairy cows during heat stress. Anim Feed Sci Technol. 180:26-33.



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