热应激对奶牛的影响及其缓解措施
摘要
奶牛热应激是世界性问题,不同程度地影响着各地的畜牧业生产。为此,文章阐述了影响奶牛热应激的因素及热应激对奶牛造成的各方面影响,并通过评估热应激的严重程度,提出了缓解热应激的具体措施。
引文
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[7] De Rensis,Garcia-Ispierto F I,López-Gatius F.Seasonalheat stress:Clinical implications and hormone treatments for the fertility of dairy cows[J].Theriogenology,2015,84:659-666.
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[9] Westwood C T,Lean I J,Garvin J K.Factors influencing fertility of Holstein dairy cows:a multivariate description[J].J Dairy Sci,2002,85:3225-3237.
[2]李建国,桑润滋,张正珊,等.热应激对奶牛生理常值、血液生化指标、繁殖及泌乳性能的影响[J].河北农业大学学报,1998(4):69-75.
[3] Spiers D E,Spain J N,Sampson J D,et al.Use of physiological parameters to predict milk yield and feed intake in heat-stressed dairy cows[J].J Therm Biol,2004,29:759-764.
[4] NRC.Nutrient Requirements of Dairy Cattle[M].7th rev ed.Washington:Natl Acad Sci,2001.
[5] Collier R J,Eley R M,Sharma A K,et al.Shade management in subtropical environment for milk yield and composition in Holstein and Jersey cows[J].J Dairy Sci,1981,64:844-849.
[6] Linvill D E,Pardue F E.Heat stress and milk production in the South Carolina coastal plains[J].J Dairy Sci,1992,75:2598-2604.
[7] De Rensis,Garcia-Ispierto F I,López-Gatius F.Seasonalheat stress:Clinical implications and hormone treatments for the fertility of dairy cows[J].Theriogenology,2015,84:659-666.
[8] Wheelock J B,Sanders S R,Shwartz G,et al.Effects of heat stress and rb ST on production parameters and glucose homeostasis[J].J Dairy Sci,2006,89(1):290-291.
[9] Westwood C T,Lean I J,Garvin J K.Factors influencing fertility of Holstein dairy cows:a multivariate description[J].J Dairy Sci,2002,85:3225-3237.