Biochemical status of serum and corresponding milk of cows kept under open grazing system in Sirajganj, Bangladesh

M Z Hossion,M I Haque,A J Shanta,K M Sujan,M K Islam,M S Islam

doi:10.33109/bjvmjd2020rm1

Abstract

Background: In open grazing dairy cattle farming, it is critical to identify and monitor health status and disease incidence. Testing of physiological parameters is essential to monitoring the health status of dairy herds. Therefore, the present study was carried out to evaluate the comparative status of serum chemistry and corresponding milk chemistry in cattle reared in open grazing system. Methods: The research was conducted in 10 clinically healthy cows reared under open grazing system from different commercial farms of Baghabari in Sirajganj district. Blood samples were collected from individual animal through the jugular vein puncture. Corresponding milk samples were collected directly from teat during the morning milking time. Blood and milk samples were brought to the laboratory in an ice cooled sample transportation box. Total serum protein, glucose, cholesterol, calcium, phosphorus, sodium, potassium, chloride concentration and corresponding milk protein, lactose, cholesterol, calcium, phosphorus, sodium, potassium, chloride concentration were measured by using standard analytical techniques. Results: Results showed that, there was a partially positive correlation among blood glucose and milk lactose (0.698), blood cholesterol and milk cholesterol (0.709), blood sodium and milk sodium (0.657). In addition, a strongly positive correlation was found between blood calcium and milk calcium (0.905). However, partially negative correlation between blood phosphorus and milk phosphorus (-0.688) was observed. Conclusions: The study shows the prospect of effectively using comparative analysis of serum and corresponding milk constituents to construct a comprehensive model or technology for the betterment of dairy farming in Bangladesh.

Highlights

There are two alternative management methods for grazing dairy cows that improve the supply of nutrients and rumen synchrony between energy and protein provided by the diet
Milk is a source of proteins, lipids, vitamins and minerals, and those constituents of milk are synthesized in the mammary gland from constituents absorbed from blood (Mohebbi-Fani et al 2005)
Numerous studies have focused on cow milk, milk from other animal species such as buffaloes, sheep, goats and camels are essential to the human diet in various parts of the world

Summary

Introduction

There are two alternative management methods for grazing dairy cows that improve the supply of nutrients and rumen synchrony between energy and protein provided by the diet. It is well known that variables such as breed, stage of growth, age, reproduction status and stage of lactation have an influence on many blood parameters (Doornenbal et al 1988) Measurement of these parameters provides a practical diagnostic tool for evaluating pathological conditions in live animals or for monitoring the health status of animals (Verheyen et al 2007). A very few experiments focusing this issue have been attempted by some authors but the real relationship has not been exemplified in those works Keeping these in view, the study was performed to assess the calcium, phosphorus, potassium, sodium, chloride, total protein, total cholesterol and glucose level of serum in cow and the calcium, phosphorus, potassium, sodium, chloride, total protein, total cholesterol and lactose level of corresponding milk samples. The present study was carried out to evaluate the comparative status of serum chemistry and corresponding milk chemistry in cattle reared in open grazing system

Methods

Results

Conclusion