INFLUENCE OF CLINICAL CO S MASTITIS ON MILK PROTEIN FRACTIONS, CERTAIN BLOOD CONSTITUENTS AND BACTERIAL ISOLATES.

Document Type : Original Article

Authors

1 Animal Reproduction & A.I. Dept Nationai Research Centre, Dokkl, Cairo, Egypt.

2 Dairy Dept Nationai Research Centre, Dokkl, Cairo, Egypt.

3 Toxicology & food contaminants Dept.Nationai Research Centre, Dokkl, Cairo, Egypt.

4 Animal Diseases & Parasitology Dept Nationai Research Centre, Dokkl, Cairo, Egypt.

Abstract

rile freQuent distribution of isolated microorganisms from examined milk
samples clears Ihat Sa/ph. sureus and Slrep < /em>l. _ga/actlae were the most prevalent
isolates (9.38% and 8.50% respectively). Comparing the different rapid tests for
diagnosis of mastitis, the peroxidase test accorapanied with CMT was used as a
rapid screening test for diagnosis of cow maSlilJis. The metabolic profile of some
blood parameters of cows suffering from mastitis showed highly significant changes
(p < O.01) in case of alanine aminotransferase (AL T) and alkaline phosphatase vatues.
which reneot the severity of mastitis on dairy cow's productivity. Meanwhile, all serum
parameters showed no statistic difference between control group and post treated
with antibiotics cow, which indicated the reversible of cow productivity. The
electrophoresis pattern of casein and whey protein of Friesian cows milk was
determined in healthy and in mastitic animals before and after antibiotic treatment.
The protein pattem of sick animals was different from that of Ihe healthy group,
especially in case of whey proteins. The fractions with slow rate of migration namely
x-caeeln. immunog(obuUns, proteose peptone and bovine serum albumin were found
to be more affected in mastitic milk. The degree of c:hanges depends on the disease
seventy.

Keywords