scholarly journals Determination of blood serum calcium, inorganic phoshorus and magnesium in different productive stages of holstein dairy cows

2019 ◽  
Vol 73 (1) ◽  
pp. 10-16
Author(s):  
Radojica Djokovic ◽  
Marko Cincovic ◽  
Vladimir Kurcubic ◽  
Zoran Ilic ◽  
Milun Petrovic ◽  
...  
Keyword(s):  
Blood Serum ◽  
Dairy Cows ◽  
Serum Calcium ◽  
Serum Magnesium ◽  
Late Pregnancy ◽  
Inorganic Phosphorus ◽  
Lactation Period ◽  
Early Lactation ◽  
Macro Elements

Introduction. The aim of this study was to determine and compare levels of blood serum calcium, inorganic phosphorus and magnesium in the peripartal period and during mid lactation in Holstein dairy cattle. Materials and Methods. Blood samples were collected from 12 cows in late pregnancy, 12 early lactation cows, and 12 mid lactation cows. Results and Conclusions. Serum calcium and inorganic phosphorus in blood of dairy cows in early and mid lactation were significantly lower compared to the values in the blood serum of dairy cows in late pregnancy, probably indicating the increased use of these macro elements by the mammary gland at the early stages of lactation. When the cows were in the lactation period, blood serum magnesium levels were significantly lower compared to the values of dairy cows during late pregnancy, probably indicating the increased use of magnesium by the dairy cows during lactation. The results show that the homeostasis of the macro elements examined in the blood of transition and mid lactation dairy cows was maintained, suggesting their adequate supply from alimentary sources.

scholarly journals Effect of the first and second postpartum partial milking on blood serum calcium concentration in dairy cows

2014 ◽  
Vol 59 (No. 3) ◽  
pp. 128-133
Author(s):  
E.G. Salgado-Hernández ◽  
A. Aparicio-Cecilio ◽  
F.H. Velásquez-Forero ◽  
D.A. Castillo-Mata
Keyword(s):  
Blood Serum ◽  
Dairy Cows ◽  
Serum Calcium ◽  
Metabolic Disorders ◽  
Calcium Concentration ◽  
Atomic Absorption Spectrophotometry ◽  
Serum Calcium Concentration ◽  
Group 2 ◽  
Group 1

Parturient paresis and subclinical hypocalcemia are frequent metabolic disorders in dairy cows postpartum. The aim of this study was to determine the effect of postpartum partial milking in the first two milkings on blood serum calcium concentration in dairy cows. Twenty multiparous Holstein dairy cows were randomized into two groups. Cows of group 1 (n = 10) were partially milked at the first and second milking postpartum. Cows of group 2 (n = 10) were completely milked. Blood samples were collected from all animals 5–7 days before calving, within 30 min after calving, and 4, 8, 12, 16, 20, 24, 28, and 32 h after calving for determination of serum calcium (Ca), phosphorus (P), and magnesium (Mg) concentrations. Colostrum production was registered and sampled in the first and second milking. Concentration of Ca in colostrum was determined by atomic absorption spectrophotometry. Serum Ca and P concentrations decreased in both groups after parturition (P < 0.05) and remained low during 32 h postpartum with no difference observed between groups (P > 0.05). Serum concentrations of Mg were stable in all samples and no statistical difference was observed between groups (P > 0.05). Colostrum production was higher in completely milked cows only in the first postpartum milking (P < 0.05), but there was no difference between groups at the second milking. Total Ca secretion in colostrum was higher in the complete milking group at the first and second postpartum milking. Colostrum Ca secretion increased at the second milking with respect to the first one in both groups (P < 0.05). There was no correlation between serum Ca and colostrum Ca (P > 0.05). In this study, the partial milking of colostrum in the first and second milking postpartum did not prevent subclinical hypocalcemia in dairy cows.  

scholarly journals CHOLESTEROL AND CHOLESTEROL ESTER IN THE BLOOD SERUM OF CATTLE LATE IN PREGNANCY AND DURING THE EARLY LACTATION PERIOD

1928 ◽  
Vol 48 (1) ◽  
pp. 25-30 ◽  
Author(s):  
Richard E. Shope ◽  
John W. Gowen
Keyword(s):  
Blood Serum ◽  
Total Cholesterol ◽  
Cholesterol Ester ◽  
Post Partum ◽  
Late Pregnancy ◽  
Lactation Period ◽  
Early Lactation ◽  
Bovine Blood ◽  
Dry Period ◽  
Gradual Rise

1. The total cholesterol and cholesterol ester of bovine blood serum during the "dry" period of late pregnancy is low. 2. Following parturition the total cholesterol and cholesterol ester of bovine blood serum show a still greater, very transient decrease followed by a gradual rise to reach a rather constant level 40 to 50 days post partum. This lactation level is very much higher than the "dry" level.

Relationships among macro-minerals, other selected serum markers of bone profile and milk components of dairy cows during late-lactation

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Ryszard Mordak ◽  
Zbigniew Dobrzański ◽  
Robert Kupczyński
Keyword(s):  
Dairy Cows ◽  
Milk Fat ◽  
Dry Matter ◽  
Inorganic Phosphorus ◽  
Serum Markers ◽  
Laboratory Diagnostics ◽  
Lactation Period ◽  
Milk Samples ◽  
Milk Components ◽  
Macro Mineral

AbstractTesting blood and milk parameters as well as analysing the relationships among these markers is very useful for monitoring the internal homeostasis and health in high-yielding dairy cows during various production periods. The aim of the study was to assess the correlations (relationships) among macro-minerals, such as calcium (Ca), inorganic phosphorus (P), magnesium (Mg), other selected bone profile markers, such as total protein (TP), albumin, activity of alkaline phosphatase (ALP) measured in serum and selected milk components such as number of somatic cells (SCC), colony-forming units (CFU), milk fat (MF), milk protein (MP), milk lactose (ML), dry matter (DM), non-fat dry matter (FDM) and milk production in late-lactation cows. Both blood and milk samples were collected from 11 clinically healthy milking cows during the late-lactation period. The cows were examined once a day for 3 consecutive days resulting in 33 sets of blood and milk samples for laboratory and statistical analysis. Significant correlations were observed between: Mg and MP, Mg and FDM, ALP and SCC, TP and SCC, TP and MP, TP and FDM, albumin and MP, albumin and FDM, P and Mg, Mg and albumin, and between TP and albumin. When monitoring macro-mineral homeostasis and mammary gland health, especially in intensively fed high-yielding dairy cows correlations between these markers should be considered. The revealed correlations can allow for deeper comparative laboratory diagnostics of homeostasis and can be especially useful for laboratory monitoring of the potential risk of subclinical macro-mineral deficiency in high-yielding dairy cows.

scholarly journals Determination metabolic and nutritional status in dairy cows during early and mid lactation

2016 ◽  
Vol 32 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Radojica Djokovic ◽  
Zoran Ilic ◽  
Vladimir Kurcubic ◽  
Milan Petrovic ◽  
Violeta Caro-Petrovic ◽  
...  
Keyword(s):  
Blood Serum ◽  
Dairy Cows ◽  
Metabolic Status ◽  
Early Lactation ◽  
Serum Concentrations ◽  
Nonesterified Fatty Acids ◽  
Lactating Cows ◽  
Lower Blood ◽  
Positive Correlations ◽  
Beta Hydroxybutyrate

The objective of the present study was to investigate nutritional and metabolic status in Simmental cows during early and mid-lactation. Fifteen early lactating cows and 15 mid lactating cows were chosen for the investigation. Blood samples were collected to measure beta-hydroxybutyrate (BHB), nonesterified fatty acids (NEFA), triglycerides (TG), glucose and the activity of aspartate transaminase (AST). Early lactation as compared to mid lactating cows were found to have significantly higher (P<0.05) blood serum concentrations of NEFA, BHB and AST and lower blood serum concentrations of glucose (P<0.05) and TG (P>0.05). Significantly negative correlations were observed between BHB and glucose (P<0.01), BHB and TG (P<0.05), NEFA and glucose (P<0.05). Significantly positive correlations were observed between NEFA and BHB (P<0.05), NEFA and AST (P<0.05), glucose and TG (P<0.01). The results suggest that these parameters can serve as useful indicators of the nutritional and metabolic status of dairy cows during lactation.

Adipose tissue progesterone concentrations in dairy cows during late pregnancy and early lactation

1996 ◽  
Vol 43 (1) ◽  
pp. 15-23 ◽  
Author(s):  
H. Hamudikuwanda ◽  
G. Gallo ◽  
E. Block ◽  
B.R. Downey
Keyword(s):  
Adipose Tissue ◽  
Dairy Cows ◽  
Late Pregnancy ◽  
Early Lactation

scholarly journals Comparison of performance and metabolism from late pregnancy to early lactation in dairy cows with elevated v. normal body condition at dry-off

animal ◽  
2019 ◽  
Vol 13 (7) ◽  
pp. 1478-1488 ◽  
Author(s):  
K. Schuh ◽  
H. Sadri ◽  
S. Häussler ◽  
L.A. Webb ◽  
C. Urh ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Body Condition ◽  
Late Pregnancy ◽  
Early Lactation ◽  
Normal Body

scholarly journals PSI-18 Adiponectin serum concentrations in late pregnancy and early lactation in primiparous and multiparous Holstein dairy cows.

2018 ◽  
Vol 96 (suppl_3) ◽  
pp. 65-65
Author(s):  
C Urh ◽  
J Denißen ◽  
I Harder ◽  
C Koch ◽  
E Stamer ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Late Pregnancy ◽  
Early Lactation ◽  
Serum Concentrations ◽  
Holstein Dairy Cows

Improvements on the Automatic Determination of Micro Amounts of Serum Calcium

1963 ◽  
Vol 9 (4) ◽  
pp. 423-427 ◽  
Author(s):  
H V Malmstadt ◽  
T P Hadjiioannou
Keyword(s):  
Blood Serum ◽  
Serum Calcium ◽  
Automatic Determination ◽  
Complete Procedure

Abstract Calcium in 0.2 ml. of blood serum can be titrated automatically in about 10 sec. with a reproducibility of 1-2%. It is not necessary to deproteinize the serum, and the complete procedure requires less than 1 min.

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