Medicine and Health Sciences Commons^™

A Comparative Study Of Blood And Milk Chemiluminescence In Healthy Cows And Withsubclinical And Clinical Mastitis, Radoslaw Skorzewski, Wieslaw Krumrych, Hanna Markiewicz, Elzbieta Sandurska

Turkish Journal of Veterinary & Animal Sciences

The aim of the study was to evaluate the luminol-dependent spontaneous and stimulated chemiluminescence (CL) of whole blood and milk in cows with subclinical and clinical mastitis. The research was carried out on 108 Holstein-Friesian dairy cows aged 3-5 years. Based on the assessment of somatic cell count (SCC) in quarter milk, the animals were divided into 3 groups: I - clinically healthy cows (n = 35), II - animals with subclinical mastitis (n = 30) and III - cows with clinical mastitis (n = 43). The material for the research was whole blood and quarter milk. The samples were …

Identification Of Micrornas In The Follicular And Luteal Tissues Of Holstein-Friesian Cows, Selçuk Özdemi̇r, Seli̇m Çomakli

Turkish Journal of Veterinary & Animal Sciences

MicroRNAs (miRNAs) regulate many physiological pathways, including development, cell differentiation, immune response as well as diseases by post-transcriptional processes. However, information is limited regarding the biological roles of miRNAs in the development of the follicular and luteal tissues in cows. The main aim of the present study was to identify miRNAs that are expressed in the follicular and luteal tissues of cows. We used a comparative RNA sequencing method to identify miRNA candidates that might play key roles in the follicular and luteal phases of Holstein cows. Nine miRNAs were expressed at a high ratio: 8 in the follicular tissue …

Evaluation Of Serum Enzyme Activities And Protein Fractions In Brucella-Infected Cows, Mohamed Fahmy Abou Elazab

Turkish Journal of Veterinary & Animal Sciences

The aim of this study was to evaluate potential changes in serum enzyme activities and protein fractions in Brucella-infected cows. A total of 1100 serum samples of dairy cows were screened for Brucella infection using the Rose Bengal test (RBT). Serum samples reacting positively to the RBT were subjected to indirect enzyme-linked immunosorbent assay for confirmation. Thirty serum samples from serologically positive cows and 30 from negative (healthy) cows were analyzed for alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatine kinase (CK), lactate dehydrogenase (LDH), alkaline phosphatase (ALP), and gamma-glutamyl transferase (GGT) activities and total protein (TP) concentrations and serum protein …

Comparing Levels Of Certain Heavy Metals And Minerals And Antioxidativemetabolism In Cows Raised Near And Away From Highways*, Hüsametti̇n Eki̇ci̇, Özkan Şi̇mşek, Şevket Arikan, Meryem Eren, Bayram Güner

Turkish Journal of Veterinary & Animal Sciences

The scope of this study was to investigate the concentrations of certain heavy metals, mineral levels, and antioxidative metabolism in cows raised near (300 m) and away from highways (2.5 km) in Çankırı Province. For this purpose, blood samples were collected from 100 cows (aged 3-5 years) raised near and away from highways in this province. Concentrations of certain heavy metals and minerals in the serum were analyzed on an ICP-MS device. Additionally, lipid peroxidation product malondialdehyde (MDA) in the plasma and antioxidative defense system indicators, erythrocyte superoxide dismutase (SOD) and catalase (CAT) activities, were measured with a spectrophotometer. As …

Presence And Antibiotic Susceptibility Patterns Of Contagious Mastitis Agents (Staphylococcus Aureus And Streptococcus Agalactiae) Isolated From Milks Of Dairy Cows With Subclinical Mastitis, Serkan İki̇z, Beren Başaran, Enver Bariş Bi̇ngöl, Ömer Çeti̇n, Güven Kaşikçi, Naci̇ye Yakut Özgür, Meli̇h Uçmak, Özge Yilmaz, Mehmet Can Gündüz, Ahmet Sabuncu

Turkish Journal of Veterinary & Animal Sciences

Mastitis is recognized as one of the most important diseases affecting the dairy industry. The antibiotic susceptibility test is important to achieve accurate treatment in subclinical mastitis. This study was conducted to determine the presence of contagious mastitis agents (Streptococcus agalactiae and Staphylococcus aureus) in 270 bovine milk samples collected from 132 dairy cows with subclinical mastitis in 15 different dairy farms located in the Marmara Region of Turkey. A total of 256 bacterial pathogens were isolated, of which 25 isolates were identified as S. agalactiae and 12 isolates were identified as S. aureus. Antibiotic susceptibilities of the isolates were …

A Study Of Somatic Cell Counts In The Milk Of Holstein-Friesian Cows Managed In Mediterranean Climatic Conditions, Atakan Koç

Turkish Journal of Veterinary & Animal Sciences

Somatic cell counts (SCC) in the milk of Holstein-Friesian (HF) cows were determined by direct microscopic SCC technique. For a two-year period, milk samples were collected monthly from buckets during the morning and evening milkings at 4 different dairy farms. In total, 1,464 SCC readings from 88 HF cows were analyzed by using repeated measures. Herd, lactation month, parity, milking time, and herd interaction effects on SCC were statistically significant (P < 0.05). The average SCC in milk per herd was between 296,483 and 688,811 cells/ml. SCC in milk increased as parity increased. The average SCC in milk from evening milking was about 83,165 cells/ml higher than from morning milking. Improving milking management, reducing stress, providing extra care during the first month of lactation, and milking at a uniform interval will help to decrease SCC in milk and the prevalence of mastitis.

Effect Of Oxytocin Administered In The Early Stage Of The Oestrous Cycle On The Length Of The Oestrous Cycle And Levels Of Serum Progesterone, Plasma A Vitamin And Ss-Carotene In Cows, Hami̇t Yildiz, Mehmet Çay

Turkish Journal of Veterinary & Animal Sciences

The purpose of this study was to analyse the effect of the application of oxytocine in the early stage of the oestrous cycle on the levels of serum progesterone and plasma vitamin A and ß-carotene during the cycle. Five Swiss-Brown cows were used during two oestrous cycles. Blood samples were collected during the first cycle starting after synchronization and then a total daily dose of 100 I.U. oxytocine was applied subcutanously as a half dose at 12 hour intervals on days on 4, 5 and 6 of the second cycle. During the same cycle, blood samples were again collected, from …

Peri And Postparturient Concentrations Of Lipid Lipoprotein Insulin And Glucose In Normal Dairy Cows, Abdullah Başoğlu, Mutlu Sevi̇nç, Mahmut Ok, Mursel Gökçen

Turkish Journal of Veterinary & Animal Sciences

In order to provide uniqe insight into the metabolic disturbences seen after calving cholesterol, triglycerid, high density lipoprotein, low density lipoprotein, very low density lipoprotein, glucose and insulin levels in serum were studied before calving (group I), in aerly (group II) and late (group III) lactation in 24 normal cows. Serum lipoproteins were separeted into various density classes by repeated ultracentrifugation. The results indicate that there was a rise in glucose, tryglycerid and very low density lipoprotein levels before calving, and in choles-terol and high density lipoprotein levels late lactation, and the dairy cows were inclined fatty liver because of …

Milk Fever (Hypocalcaemia) Of Cows, Department Of Agriculture, Western Australia

Journal of the Department of Agriculture, Western Australia, Series 4

THE condition known as milk fever is almost essentially a disease of highly productive adult milking cows at the time of calving.

It is characterised by a low blood calcium level causing a sudden general depression of consciousness of the cow and muscular paralysis.

Without treatment most cases result in the death of the cow.