سیویلیکا را در شبکه های اجتماعی دنبال نمایید.

Effect of Heat Stress on Milk Production in Dairy Cows

سال انتشار: 1393
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 756

فایل این مقاله در 15 صفحه با فرمت PDF قابل دریافت می باشد

استخراج به نرم افزارهای پژوهشی:

لینک ثابت به این مقاله:

شناسه ملی سند علمی:

ICSDA01_0156

تاریخ نمایه سازی: 16 خرداد 1394

چکیده مقاله Effect of Heat Stress on Milk Production in Dairy Cows

Heat stress at the initiation of lactation negatively impacts the total milk production.Climatic conditions appeared to have maximum influence during the first 60 days oflactation when high-producing cows are in negative energy balance and make up for the deficit by mobilizing body reserves. High yielding cows are affected more than low yielding ones because the upper critical temperature shifts downwards as milk production, feed intake and heat production increase. Heat stress causes the rostral cooling centre of the hypothalamus to stimulate the medial satiety centre which inhibitsthe lateral appetite centre and consequently lowers milk production. The heat-stressed cows depend on glucose for body energy needs; therefore, less glucose is directedtowards the mammary gland, and there is a decline in milk production. Negative energy balance is associated with various metabolic changes that are implemented to support the dominant physiological condition of lactation. Marked alterations in both carbohydrateand lipid metabolism ensure partitioning of dietary-derived and tissue originating nutrients towards the mammary gland, and many of these changes are mediated by endogenous somatotropin which is naturally increased during periods of negative energybalance. Milk constituents are greatly affected by hyperthermia. The ability to usepowerful new tools in genomics, proteomics and metabolomics to evaluate geneticdifferences between animals in their response to thermal stress will yield important new information in the next quarter-century and will permit the selection of cattle for resistance to thermal stress.

کلیدواژه های Effect of Heat Stress on Milk Production in Dairy Cows:

نویسندگان مقاله Effect of Heat Stress on Milk Production in Dairy Cows

Kambiz Ghotouri

M.Sc.student, Dept. of Animal Sciences, University of Gonbad Kavoos, POBox ۱۶۳, Golestan Province, Iran

مراجع و منابع این مقاله:

لیست زیر مراجع و منابع استفاده شده در این مقاله را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود مقاله لینک شده اند :
Aggarwal A (2004) Effect of environment on hormones, blood metabolites, ...
Aggarwal A, Singh M (2006) Effect of water cooling _ ...
Aggarwal A, Singh M (2008) Changes in skin and rectal ...
Alim KA (1967) Repeatability of milk yield and length of ...
Al-Katanani YM, Webb DW, Hansen PJ (1999) Factors affecting seasonal ...
Armstrong DV (1994) Heat stress interaction with shade and cooling. ...
Barash H, Silanikove N, Shamay A, Ezra E (2001). Interre ...
Baumgard LH, Rhoads RP (2007) The effects of hyperthermia _ ...
With a focus _ Agriculture, Natural Resources, Environmet and Tourism ...
Baumgard LH, Odens LJ, Kay JK, Rhoads RP, VanBaale MJ, ...
Beede DK, Collier RJ (1986) Potential nutritional strategies for intensively ...
Berman A (2005) Estimates of heat stress relief needs for ...
Berman A, Folman Y, Kaim M, Mamen M, Herz Z, ...
Bermabucci U, Lacetera N, Ronchi B, Nardone A (2002) Effects ...
Bianca W (1965) Reviews of the progress of dairy science. ...
Bligh J (1976) Introduction o acclamatory adaptationinc luding notes _ ...
Block E (1994) Manipulation of dietary cation-anion difference _ nutritionally ...
Brosh A, Chosniak I, Tadmor A, Shkolnik A (1988) Phys ...
Collier RJ, Baumgard LH, Lock AL, Bauman DE (2005) Physiological ...
Collier RJC, Stiening M, Pollard BC, VanBaale MJ, Baumgard LH, ...
Coppock CE (1985) Energy nutrition and metabolism of the lactating ...
With a focus _ Agriculture, Natural Resources, Environmet and Tourism ...
Danfaer A, Thysen I, Ostergaard V (1980) The effect of ...
Drackley JK (1999) Biology of dairy cows during the transition ...
Edwards JL, Hansen PJ (1997) Differential responses of bovine oocytes ...
Edwards JL, Ealy AD, Monterroso VH, Hansen PJ (1997) Ontogeny ...
Reprod Dev 48:25-3 El-Khaschab S, El-Danasoury MS, Omer S (1984) ...
Finch VA (1985) Comparison of nonevaporative heat transfer in different ...
Flamenbaum I, Wolfenson D, Kunz PL, Maman M, Berman A ...
Fox DG, Tylutki TP (1998) Accounting for the effects of ...
Fregley MJ (1996) Adaptations: some general characteristic, In: Fregley MJ, ...
Fuquay JW (1981) Heat stress as it affects animal production. ...
Gangwar PC (1985) Importance of photoperiod and wallowing in buffalo ...
Goff JP, Horst L (1997) Physiological changes at parturition and ...
Guerriero V Jr, Raynes DA (1990) Synthesis of heat stress ...
Habeeb AAM, Abdel-Samee AM, Kamal TH (1989) Effect of heat ...
Habeeb AAM, Aboulnaga AJ, Yousef HM (1993) Influence of exposure ...
Hansen PJ (1990) Effects of coat color _ physiological responses ...
Hansen PJ (2007) Exploitation of genetic and physiological determinants of ...
With a focus _ Agriculture, Natural Resources, Environmet and Tourism ...
Harbin R, Harbough FS, Neeley KL, Find NC (1958) Effect ...
Horowitz M (2001) Heat acclimation: phenotypic plasticity and cues to ...
Huber JT, Higginbotham G, G omez-Alarcon RA, Taylor RB, Chen ...
Ingraham RH, Stanley RW, Wagner WC (1979) Seasonal effects of ...
Johnson HD (1976) World climate and milk production. Biometeoro logy ...
Johnson HD, Ragsdale AC (1959) Effects of constant environmental temperatures ...
Johnson HD, Vanjonack WJ (1976) Effects of environmental and other ...
Johnson HD, Ragasdale AC, Berry LI, Shanklin D (1963) Temp ...
Kamal TH, Johnson HD (1971) Total body solids as measure ...
Kamal TH, Johnson HD, Ragsdale RC (1959) Water consumption in ...
Kamal TH, Johnson HD, Ragsdale RC (1962) Metabolic reactions during ...
Kamal TH, Clark JL, Johnson HD (1970) The effect of ...
King VL, Denise SK, Armstrong DV, Torabi M, Wiersma F ...
Lee DHK (1965) Climatic stress indices for domestic animals. Int ...
Lin JC, Moss BR, Koon JL, Flood CA, Smith III ...
Lucy MC, Staples CR, Thatcher WW, Erickson PS, Cleale RM, ...
With a focus _ Agriculture, Natural Resources, Environmet and Tourism ...
Maloyan A, Horowitz M (2002) b -Adrenergic signaling and thyroid ...
Maltz E, Silanikove N, Shalit U, Berman A (1994) Diurnal ...
Maltz E, Silanikove N (1996) Kidney function and nitrogen balance ...
Manalu W, Johnson HD, Li RZ, Becker BA, Collier RJ ...
Van Soest PJ (1982) Nutritional ecology of the ruminant. O ...
Vanjonack WJ, Johnson HD (1975) Effects of moderate heat and ...
Verma DN, Lal SN, Singh SP, Parkash OM, Parkash O ...
Vicini JL, Crooker BA, McGuire MA (2002) Energy balance in ...
Wayman O, Johnson HD, Merijan CP, Berry IL (1962) Effect ...
West JW (1999) Nutritional strategies for managing the heat-stressed dairy ...
West JW (2002) Physiological effects of heat stress on production ...
West JW (2003) Effects of heat stress on production in ...
West JW, Mullinix BG, Sandifer TG (1991) Effects of bovine ...
West JW, Hill GM, Fermandez JM, Mandebvu P, Mullinix BG ...
Wheelock JB, Sanders SR, Shwartz G, Hernandez LL, Baker SH, ...
Zimbelman RB, Rhoads RP, Rhoads ML, Duff GC, Baumgard LH, ...
With a focus _ Agriculture, Natural Resources, Environmet and Tourism ...
http ://cals. arizona. edu/ans/ swnmc/P roc eedings/2009/ 14Collier_09 .pdf ...
نمایش کامل مراجع