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Online Journal of Veterinary Research

Established 1994 
ISSN 1328-925X


Volume 22 (9):749-753, 2018.

Clinical signs, bacteriology and blood biochemistry in repeat breeder Fresian cows


Nawaf Nooruldeen Dhahir, Dakheel Hussein Hadree, Bashar Sadiq Noomi.


College of Veterinary Medicine, Tikrit University




Dhahir NN, Hadree DH, Noomi BS., Clinical signs, bacteriology and blood biochemistry in repeat breeder Fresian cows, Onl J Vet Res., 22 (9):749-753, 2018. Repeat breeder cow syndrome (RBC) is a major cause of reduced fertility in dairy cows. Authors describe signs, bacteriology and blood biochemistry in 60 Fresian cows with RBC. Results were compared with 80 normal controls. The animals were swabbed for bacteriology and blood taken for hematology and biochemical values. We found higher incidence (P < 0.05) during summer months (45%). Vaginal epithelium was hypertrophied with mucous or purulent secretions in about a third of repeat breeders and mostly with staphylococci (42%) with or without other bacteria. Repeat breeders had higher (P < 0.05) mean blood urea (28.3 mg/L) and cholesterol (289 mmol/L) compared with controls (24.5 mg/L and 174 mmol/L), respectively. Mean glucose (43mg/dl), protein (8.3 g/L), zinc (9.2mmol), Mn (0.554 μg/mL) and Fe (0.419 μg/mL) were lower compared with controls (51 mg/dL, 10.75 g/L, 14.6μmol/L, 0.754 μg/mL and 0.62 μg/mL), respectively. Bacterial infection contributes to repeat breeder syndrome with consequent changes in blood biochemical values.


Keyword: Repeat breeders, signs, bacteriology, biochemistry.