کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
2441718 | 1108151 | 2005 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Periparturient Responses of Multiparous Holstein Cows Fed Different Dietary Phosphorus Concentrations Prepartum
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کلمات کلیدی
ICAECDpTHdeoxypyridinolineECMDPDOHP1,25(OH)2D3 - 1،25 (OH) 2D31,25-dihydroxyvitamin D3 - 1،25-دی هیدروکسوییتامین D3Osteocalcin - استئوکلسین BEB - بی بیBase excess - بیش از حد پایهenergy-corrected milk - شیر اصلاح شده با انرژیSerum phosphorus - فسفر سرمPhosphorus requirement - نیاز فسفرparathyroid hormone - هورمون پاراتیروئیدhydroxyproline - هیدروکسی پرولینIonized calcium - کلسیم یونیزه شدهperiparturient cow - گاو پرپراطوری
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم دامی و جانورشناسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Our objective was to compare the effects of different prepartum dietary phosphorus concentrations on periparturient metabolism and performance. Forty-two late pregnant multiparous Holstein cows were fed 0.21, 0.31, or 0.44% P (dry basis) for 4 wk before expected calving. After parturition, all cows were fed a common lactation diet (0.40% P). In the prepartum period, cows fed 0.21% P had lower blood serum P concentrations compared with cows fed 0.31 or 0.44% P. However, serum P concentrations of all cows were within the normal range (4 to 8Â mg/dL) until the day of calving when average concentrations dropped below 4Â mg/dL. From 3 to 14 d postpartum, serum P of cows fed 0.21% P was greater than that of cows fed 0.31 or 0.44% P. No cows presented with or were treated for clinical hypophosphatemia in the periparturient period. Total serum Ca was lower before calving through 2 d postpartum for cows fed 0.44% P compared with those fed 0.21 or 0.31%. Prepartum dietary P treatments did not alter blood osteocalcin, hydroxyproline, and deoxypyridinoline, indicators of bone metabolism, or concentrations of parathyroid hormone or 1,25-dihydroxyvitamin D3. Energy-corrected milk yield and milk composition (first 28 d of lactation) were not affected by prepartum dietary P concentrations. It is concluded that feeding 0.21% P (34Â g of P/cow daily) prepartum is adequate for periparturient multiparous Holstein cows with high metabolic demands and genetic potential for milk production. No adverse effects on periparturient health, dry matter intake, or 28-d lactation performance resulted.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Dairy Science - Volume 88, Issue 10, October 2005, Pages 3582-3594
Journal: Journal of Dairy Science - Volume 88, Issue 10, October 2005, Pages 3582-3594
نویسندگان
A.B. Peterson, M.W. Orth, J.P. Goff, D.K. Beede,