Our view refer to clarify the seroprevalence of brucellosis infection in dairy cows Menoufiya Governorate and evaluate hematological, biochemical immunological parameters changes blood infected compared healthy ones. Blood samples 100 (3-5) years from private farm abattoir were screened for Brucella using (BAPAT) test groups, first group(25) serum serologically second group (75) negative (healt...

This study was conducted to determine the serum and milk levels of thiobarbturic acid-reac- tive substances (TBARS), nitric oxide (NO), superoxide dismutase (SOD), glutathione peroxi- dase (GSH-Px), vitamin E selenium, IL-4 IL-6 in lactating dairy cows affected with bloody using commercially available ELISA kits. Milk whole blood samples were collected from 60 20 apparently healthy for control....

We investigated the single and combined effects of 2 feeding levels (normal lactation diet vs. energy-reduced diet, both fed for ad libitum intake) daily milking frequencies (twice once) during 1 wk before dry-off day (d 0), as well an intramuscular injection either a dopamine agonist (cabergoline; Velactis, Ceva Santé Animale; labeled use only with abrupt dry-off, e.g., no reduction in level o...

The main objective of this study was to evaluate the effects of transrectal guidance of the ovaries by an assistant on operative time during bovine laparoscopic ovariectomy. Twenty four clinically healthy Holstein dairy cows were divided randomly into two groups. In the transrectal guidance group, an assistant grasped the ovaries via the transrectal route and pulled them to a position where the...

We wished to determine the expression of trafficking/adhesion molecules on the surface of lymphocytes isolated from infected mammary glands of cows challenged with either Serratia marcescens or Staphylococcus uberis. Healthy Holstein cows in mid lactation were infected by intramammary infusion with S. marcescens or S. uberis. Following infection, milk samples were collected at various time poin...

Impairment of the insulin regulation of energy metabolism is considered to be an etiologic key component for metabolic disturbances. Methods for studies of insulin sensitivity thus are highly topical. There are clear indications that reduced insulin sensitivity contributes to the metabolic disturbances that occurs especially among obese lactating cows. Direct measurements of insulin sensitivity...

The effect of enrofloxacin and alfa tocopherol on the capacity of bovine milk leukocytes to generate reactive oxygen species and phagocytic activity after stimulation with phorbol 12-myristate 13-acetate (PMA) for superoxide were studied in bovine clinical mastitis. Group I, consisting of 9 healthy cows, served as the control, whereas groups II and III each contained 9 cows with clinical mastit...

The article describes the dynamics of changes in blood concentrations of the active substances present in the solution after its infusion to healthy cows in comparison to NaCI solution as well as the response of paretic cows to treatment with the new complex solution. Cows received a dose of 400 ml of A1 solution (containing 8.4 g of Ca2+) intravenously. In healthy cows the average calcium conc...

Phagocytosis and intracellular killing by bovine polymorphonuclear leukocytes (PMN) are important host defence mechanisms against mastitis caused by Staphlylococcus aureus. We compared the phagocytosis and overall killing of a non slime-producing (NSP) S. aureus and its slime-producing (SP) variant by blood PMN, using an in vitro bacteriological assay. Seven clinically healthy Holstein-Friesian...

By causing numerous changes in the cardiovascular system, ageing leads to a decreased threshold for clinical manifestation of heart disease. The aim of this study was to define the existence of cardiac structural and functional changes in healthy dogs of different age. Radiographic, electrocardiographic (ECG) and echocardiographic examinations of 20 clinically healthy German Shepherd dogs were ...