Vitamin D Provision in High-Yield Dairy Cows During the Winter Housing Period

2014 ◽  
Vol 1 (1) ◽  
pp. 42-46
Author(s):  
L. Yuskiv ◽  
V. Vlizlo

Aim. To investigate the vitamin D status in highly productive cows during winter housing period and effect of cholecalciferol by various ways of vitamin D 3 injection to cows in last days of gestation and after calving. Methods. Enzyme-linked immunoassay, spectrophotometry. Results. It has been stated that intramuscular injection of cholecalciferol into cows caused increase of the vitamin D 3 active metabolite – 25-OHD 3 , calcium, phosphorus and magnesium levels together with decrease of alkaline phosphatase level in pre- and post-natal periods. Oral supplementation makes little infl uence on the studied blood parameters of cows. Conclusions. Extrabuccal administration and oral supplementation of cholecalciferol in winter housing period to high-yield cows in the last days of gestation and after calving is accompanied by increased levels of its metabolites and their effect on mineral metabolism in the postnatal period. The nature of these changes depends on the mode of vitamin D administration and the physiological state of the cows.

2018 ◽  
Vol 20 (88) ◽  
pp. 141-146
Author(s):  
L. L. Yuskiv ◽  
V. Vlizlo

The article contains data on the content of active metabolite of vitamin D3 – 25OHD3, calcium, phosphorus, magnesium and activity of alkaline phosphatase in the blood of cows and their calves in the early postnatal period. The experiment was conducted on cows-analogues of the Ukrainian Black-and-White dairy breed during the dry period and after calving and on calves received from them. The experiment was performed during the winter period of the stall at the Lviv region farm. The blood for tests was collected from the jugular vein before morning feeding at 3–5 days before calving and in the 5th–7th and 55th–60th days after calving. The blood from the calves was collected in the following dates: on the first day and at 5th–7th days old and at 55–60th days old.  It was established that, the content of 25-hydroxycolecalciferol in blood calves on the first day after birth was 18.90 ± 2.08 nmol/l. In subsequent periods of study, its level decreased, in particular, at 5th−7th days old it was 1.52 times lower (P < 0.05), and in the at 55–60th days old – 2.07 times (P < 0.01) than on the first day old age during the winter period of the stall. Changes in the content of 25OHD3, total calcium and its fractions, inorganic phosphorus, magnesium and activity of alkaline phosphatase and its isoenzymes in the blood of cows in the prenatal and lactation periods have been determined. In particular, the content of 25OHD3 was 18.7 ± 2.27 nmol/l at 3–5 days before calving in the blood of cows, on the 5–7th day after calving continued to decrease and amounted to 15.8 ± 0.83 nmol/l, and on the 55–60th day of the postpartum period it increased to 20.5 ± 2.08 nmol/l.


2007 ◽  
Vol 77 (6) ◽  
pp. 376-381 ◽  
Author(s):  
de Souza Genaro ◽  
de Paiva Pereira ◽  
de Medeiros Pinheiro ◽  
Szejnfeld ◽  
Araújo Martini

Vitamin D is essential for maintaining calcium homeostasis and optimizing bone health. Its inadequacy is related to many factors including dietary intake. The aim of the present study was to evaluate serum 25(OH)D and its relationship with nutrient intakes in postmenopausal Brazilian women with osteoporosis. This cross-sectional study comprised 45 free-living and assisted elderly at São Paulo Hospital. Three-day dietary records were used to assess dietary intakes. Bone mineral density was measured with a dual-energy X-ray absorptiometer (DXA). Blood and urine sample were collected for analysis of biochemical markers of bone and mineral metabolism. Insufficiency of vitamin D was observed in 24.4% of the women and optimal levels (≥ 50 nmol/L) were observed in 75.6%. Parathyroid hormone was above the reference range in 51% of the participants. The mean calcium (724 mg/day) and vitamin D (4.2 μ g/day) intakes were lower than the value proposed by The Food and Nutrition Board and sodium intake was more than two-fold above the recommendation. Higher levels of serum 25(OH)D were inversely associated with sodium intake. Dietary strategies to improve serum vitamin D must focus on increasing vitamin D intake and should take a reduction of sodium intake into consideration.


2012 ◽  
Vol 2 (7) ◽  
pp. 329-330
Author(s):  
Saira Baloch ◽  
◽  
Bikha Ram Devrajani ◽  
Aneela Atta-ur-Rahman

Biomolecules ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1017
Author(s):  
Thomas Müller ◽  
Lutz Lohse ◽  
Andreas Blodau ◽  
Katja Frommholz

Background: Vitamin D has a steroid- and an anabolic-resembling chemical structure. Vitamin D is essential for many processes in the human body after hydroxylation. Aims of the Study: To investigate the impact of 25-hydroxy-vitamin D plasma concentrations on the blood parameters number of erythrocytes, hematocrit, mean corpuscular hemoglobin and mean corpuscular volume. Methods: Serial assessments were done in 290 patients with multiple sclerosis and repeated after a mean interval of 245 days. A recommendation for vitamin D supplementation was given in case of a concentration lower than 20 ng/mL combined with a prescription of a formulation containing vitamin D but not vitamin K. Results: There was a fall of vitamin D in 119 subjects and a rise in 164, while no change appeared in 7 participants. When vitamin D values went down between both assessments moments, the computed increase of mean corpuscular haemoglobin was significantly lower compared with the rise of mean corpuscular haemoglobin associated with a vitamin D elevation. When vitamin D declined, the computed fall of mean corpuscular volume fall was significantly lower compared with the decrease of mean corpuscular volume, when vitamin D rose. Positive correlations were found between differences of vitamin D and mean corpuscular haemoglobin, respectively mean corpuscular volume. Inverse relations appeared between disparities of vitamin D and erythrocytes, respectively haematocrit. Conclusions: The elevation of vitamin D plasma levels provides enhanced preconditions for a better tissue oxygenation on a cellular level.


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