کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10973406 | 1108014 | 2015 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Supplementation with difructose anhydride III promotes passive calcium absorption in the small intestine immediately after calving in dairy cows
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم دامی و جانورشناسی
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چکیده انگلیسی
The incidence of hypocalcemia increases in high-parity dairy cows because resorption of bone Ca is delayed in these animals, and they appear to have a reduced ability to absorb Ca from the intestine during the early postpartum period. Difructose anhydride (DFA) III has been shown to promote the absorption of intestinal Ca via a paracellular pathway. However, past studies have not reported this effect in peripartum dairy cows. Therefore, we investigated the effect of DFA III supplementation on Ca metabolism during the peripartum period to determine whether DFA III promotes intestinal Ca absorption via this route. Seventy-four multiparous Holstein cows were separated into DFA and control groups based on their parity and body weight. The feed of the DFA group was supplemented with 40Â g/d of DFA III from â14 to 6Â d relative to calving. The control group did not receive DFA III. At calving (0Â h relative to calving), serum Ca declined below 9Â mg/dL in both groups. However, serum Ca concentrations were greater in the DFA group than in the control group at 6, 12, 24, and 48Â h relative to calving, and the time required for serum Ca to recover to 9Â mg/dL during the postpartum period was shorter in the high-parity cows in the DFA group than in those in the control group. Parathyroid hormone concentrations increased immediately after calving in both groups and were greater in the control group than in the DFA group at 12 and 24Â h relative to calving. Serum 1,25-dihydroxyvitamin D concentrations increased at 0 and 12Â h relative to calving in both groups and were higher in the control group than in the DFA group at 72Â h relative to calving. Serum concentrations of the bone-resorption marker cross-linked N-telopeptide of type I collagen (NTX) were not different between the groups during peripartum period, and serum NTX in all cows was lower at 0, 6, 12, 24, 48, and 72Â h relative to calving than at â21, 4, and 5Â d relative to calving. Thus, DFA treatment induced faster recovery of serum Ca, although bone resorption was restrained. In conclusion, DFA III promotes intestinal passive Ca absorption via the paracellular pathway during the early postpartum period; this absorption is unaffected by aging.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Dairy Science - Volume 98, Issue 12, December 2015, Pages 8688-8697
Journal: Journal of Dairy Science - Volume 98, Issue 12, December 2015, Pages 8688-8697
نویسندگان
M. Teramura, S. Wynn, M. Reshalaitihan, W. Kyuno, T. Sato, M. Ohtani, C. Kawashima, M. Hanada,