title: Effect of mastitis on macro-minerals of bovine milk and blood serum in Sudan.
abstract: Milk and blood serum from clinically mastitis infected, subclinically mastitis infected and healthy Friesian cows (15 samples from each of 3 groups) were evaluated for macrominerals (sodium, potassium, calcium, magnesium and phosphorus). The milk from cows infected with subclinical mastitis revealed a significant decrease in potassium (P < 0.001) and a significant increase in sodium and phosphorus content (P < 0.01). Similarly, the milk from cows with the clinical form of the disease showed a significant increase in sodium (P < 0.001) and a significant decrease in potassium, magnesium (P < 0.001) and calcium (P < 0.01). Comparison of healthy cow's milk with that from cows with subclinical mastitis revealed a highly significant increase in sodium (P < 0.001). Comparison of healthy cow's milk with that of clinically mastitic milk showed a highly significant decrease in levels of calcium, magnesium (P < 0.001) and potassium (P < 0.01). However, sodium increased highly significantly (P < 0.001). Comparison of macro-minerals in milk from cows with subclinical and clinical mastitis revealed a significant decrease in potassium contents (P < 0.05) compared with that of healthy cows. Potassium levels were found to decrease significantly (P < 0.05) in subclinically infected cow's blood serum. However, calcium and phosphorus showed a significant decrease (P < 0.01) in blood serum samples from the clinically infected cows.
authors.affiliation: Faculty of Animal Production, Department of Dairy Production, University of Khartoum, PO Box 32, Khartoum North 13314, Sudan. lbtisammohamed@hotmail.com
authors.forename: I E M
authors.initials: IE
authors.lastname: El Zubeir
authors.forename: O A O
authors.initials: OA
authors.lastname: ElOwni
authors.forename: G E
authors.initials: GE
authors.lastname: Mohamed
mesh_terms: D000818:Animals; D002118:Calcium / Q000032:analysis / Q000097:blood; D016022:Case-Control Studies; D002417:Cattle; D005260:Female; D007774:Lactation / Q000378:metabolism; D008274:Magnesium / Q000032:analysis / Q000097:blood; D008414:Mastitis, Bovine / Q000097:blood / Q000378:metabolism*; D008892:Milk / Q000737:chemistry*; D008903:Minerals / Q000032:analysis* / Q000097:blood / Q000378:metabolism; D010758:Phosphorus / Q000032:analysis / Q000097:blood; D011188:Potassium / Q000032:analysis / Q000097:blood; D012964:Sodium / Q000032:analysis / Q000097:blood; D013397:Sudan
chemical_list: D008903:Minerals; D010758:Phosphorus; D012964:Sodium; D008274:Magnesium; D011188:Potassium; D002118:Calcium