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In order to examine the effect of exogenous melatonin on selected biochemical variables of the blood in ruminants, dairy cows were given the pineal gland hormone in the dose of 0.1 mg/kg body weight. One and four hours after melatonin administration blood samples were collected from the cows in the control and the treated group in order to determine the levels of glucose, insulin, total cholesterol, triglycerides, free fatty acids, as well as the activities of alanine and aspartate aminotransferase. The pineal gland hormone caused a significant increase in the levels of total cholesterol and triglycerides, slight increases in glucose and insulin levels, and a significant decrease in the concentration of free fatty acids. Melatonin did not exert an effect on the activity of liver enzymes.

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sets of biochemical variables obtained conveniently in most labs. The relationship between η, lipid yield ( Y L/S ) and biomass yield ( Y X/S ) was investigated. The connection between Q c of the biomass and lipid content ( Y L/X ) was simulated. It

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. After baseline evaluation all patients were followed up for three years to analyze the association between outcome measures (cardiovascular events/mortality, all-cause mortality) and clinical/biochemical variables. Patients and methods Patients 96 (49

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Acta Veterinaria Hungarica
Authors:
Melinda Zomborszky-Kovács
,
L. Bárdos
,
H. Bíró
,
S. Tuboly
,
Erzsébet Wolf-Táskai
,
Á. Tóth
, and
P. Soós

The effect of synthetic beta-carotene and synthetic nucleotide base on daily weight gain, feed consumption and certain haematological, biochemical and immunological parameters of piglets were studied in a 3-week experiment. Beginning one week prior to weaning, the diet fed to one experimental group of piglets was supplemented with 10% Rovimix Beta-carotene at 875 mg/kg of diet. Synthetic uracil and adenine (98%, Sigma-Aldrich) were mixed into the diet of the other experimental group at doses of 500 mg/kg of diet for each substance. The control group received the basic diet without any supplementation. The changes observed over time in the haematological parameters and in certain biochemical variables could be regarded as physiological. By day 21 of the experiment, beta-carotene supplementation had significantly lowered the neutrophilic granulocyte percentage and elevated the lymphocyte percentage, while in the other two groups a change of opposite tendency occurred. At the end of the experimental period there was a decrease in plasma vitamin E concentration due to carotene supplementation (control: 6.1 ± 1.5, nucleotide: 6.3 ± 2.5, carotene: 2.3 ± 1.5 mg/L). Lymphocyte blastogenesis induced by phytohaemagglutinin and concanavalin A increased by 50 and 130%, respectively, in the nucleotide group and by 60 and 30%, respectively, in the carotene group, while it did not change in the control group. The supplements exerted no positive effect on the in vivo cellular immune response.

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Haematological and biochemical analyses of blood were performed in carp (Cyprinus carpio L.) kept in small ponds. Caught and anaesthetised carp were clinically examined and blood samples were taken at regular intervals during the three years. In the first year of examinations, the haemoglobin and haematocrit values of carp fry significantly increased (P<0.01) from June to September. The intensive growth of carp in the summer period in the second year was accompanied by adequate erythropoiesis. During hibernation haematocrit and haemoglobin significantly decreased (P<0.05) and mean corpuscular haemoglobin concentration (MCHC) increased (P<0.01) in both scaly and mirror carp. MCHC increased also with the age and increasing body weight of the fish. Mirror carp had lower haematocrit and haemoglobin values than scaly carp (P<0.01). Comparative haematological analyses between carp of normal and poor body condition showed that moderate anaemia appeared in those with poor body condition. The results indicate that there is marked seasonal and age-dependent variation in the values of haematocrit and haemoglobin. Pond water quality investigations indicated good environmental conditions. A 50% increase (P<0.05) of glucose concentration was found from June to September in the blood plasma of carp in the third year, accompanied by an even more increased (80%; P<0.01) concentration of total lipids. At the same time, considerable changes of cholesterol and total protein concentrations were not observed. The results suggest that the investigated haematological and biochemical variables could be successfully utilised in monitoring the metabolic balance and health status of fish in intensive culture.

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Physiology International
Authors:
A Zlibut
,
IC Bocsan
,
RM Pop
,
SC Vesa
,
K Bheecarry
,
R Revnic
,
B Cojan-Minzat
,
S Lupu
,
AD Buzoianu
, and
L Agoston-Coldea

biochemical variables. However, this study has some limitations. A relatively small number of patients were included in the study, which might diminish the strength of the presented data. In addition, patients’ long-term follow-up would have provided more

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, biochemical variables (i.e., CK) and hormonal variables (i.e., TE and cortisol) are used to monitor muscle damage and disturbance in the hypothalamus–pituitary–adrenal and hypothalamus–pituitary–gonadal axis, respectively; all of them being indicators of

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