Abstract
Objective:This study was designed to determine and compare the serum glucose, urea nitrogen, cholesterol, and total protein (TP) level in crossbred repeat breeder (RB) and normally cyclic cows to find out the relationship of these metabolic factors with repeat breeding syndrome (RBS).Materials and Methods:A total of 592 breedable cows from 34 farms were examined from Mymensingh and Chittagong districts. Seventy cows were identified as RB cows and another 10 cows were randomly selected as normally cyclic control cows for this study. Blood sample from each cow was collected and the serum was separated. The serum samples were analyzed by auto blood analyzer.Results:Cows affected with RBS had significant variation in their glucose, urea, and cholesterol levels. Serum glucose (43.00 gm/dl) level was significantly lower than in normally cyclic cows. On the other hand, serum urea and cholesterol levels were significantly higher than in normally cyclic cows. However, the TP concentrations did not differ between RB and cyclic cows. RB cows had a lower trend (6.815 mg/dl) of serum TP than in normally cyclic cows.Conclusion:This research might help scientists and veterinarians to understand that the high serum urea and cholesterol level along with low glucose and TP level could have some effect in the development of RBS in crossbred cows. It will potentially help veterinary practitioners and farmers to take preventive measures against RBS of crossbred cows.
Highlights
Productive and profitable dairy is crucially dependent on the sound reproductive health of the dairy animals
This study was designed to determine and compare the serum glucose, urea nitrogen, cholesterol, and total protein (TP) level in crossbred repeat breeder (RB) and normally cyclic cows to find out the relationship of these metabolic factors with repeat breeding syndrome (RBS)
Seventy cows were identified as RB cows and another 10 cows were randomly selected as normally cyclic control cows for this study
Summary
Productive and profitable dairy is crucially dependent on the sound reproductive health of the dairy animals. Dairy farmers are increasingly concerned about the reproductive performance of cattle as reproductive performance is decreasing year to year among dairy farms around the world [1,2]. Nowadays, increasing numbers of RBS and reproductive problems are found in small holding farms, animal welfare camps, and veterinary clinics [5]. An optimal nutritional state is vital for sound reproductive potential, which is reflected by the variations in biochemical or hematological factors in blood plasma or serum. Alternations in biochemical profile might result in many reproductive insufficiencies [6]. Both blood metabolic and mineral profiles are reflective of the health and nutritional status of dairy cows
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