کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5542696 | 1402521 | 2016 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mammary immunoglobulin transfer rates following prepartum milking
ترجمه فارسی عنوان
میزان انتقال ایمونوگلوبولین شیری پس از شیردهی قبل از زایمان
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کلمات کلیدی
چای سبز ایمونوگلوبولین، پستاندار نرخ انتقال،
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم دامی و جانورشناسی
چکیده انگلیسی
Colostrum formation is thought to occur slowly over an extended period (4 wk) prepartum. Furthermore, colostrum formation is highly variable among cows in total volume, IgG1 concentration, and mass obtained at first postpartum milking. Recent work has suggested that a rapid transfer of IgG1 to secretions may occur if animals are milked prepartum. Our objective was to establish the concentration, mass, and mass transfer rates of IgG1 in multiparous Holstein cows (n = 11, parity = 3.6 ± 1.1) milked prepartum (â74 to â1 h) and again around 4 h postpartum. Blood concentrations of IgG1 were very low (<1 mg/mL) in 7 cows at prepartum milking and did not decline following prepartum milking. Cows showed variability in the capacity to recover total volume, IgG1 concentration, and IgG1 mass. Three groupings of cows were considered based on the time between the 2 milkings (prepartum + 4 h postpartum): long-time (â74 to â54 h, n = 3), medium-time (â25 to â17 h, n = 4), and short-time (< â13 h, n = 4) groups. The average rates of transfer of these groups were 1.4 ± 0.8, 3.0 ± 1.3, and 25.1 ± 15.8 g/h, respectively. The data indicate that a longer time between prepartum and postpartum milking is not a main factor in IgG1 secretion transfer. Furthermore, because blood concentrations did not change after prepartum milking and the mass of blood plasma IgG1 was not sufficient to account for the mass occurring in postpartum colostrum, a source of IgG1 other than blood circulation appears to be present during colostrogenesis.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Dairy Science - Volume 99, Issue 11, November 2016, Pages 9254-9262
Journal: Journal of Dairy Science - Volume 99, Issue 11, November 2016, Pages 9254-9262
نویسندگان
C.R. Baumrucker, C.D. Dechow, A.L. Macrina, J.J. Gross, R.M. Bruckmaier,