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Comparative analysis of total protein, casein, lactose, and fat content in milk of cows suffering from subclinical and clinical mastitis caused by Streptococcus spp

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16 juin 2023
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Blood cell counts in cows with clinical and subclinical mastitis caused by Streptococcus spp_ and in healthy cows

Clinical mastitis n = 30 Subclinical mastitis n = 30 Healthy cows n = 30
Blood WBC (× 103/mm3)* 8.10 7.10 7.86
   lymphocytes (× 103/mm3)* 2.45 3.22 3.65
   neutrophils (× 103/mm3)* 3.65 2.05 2.33
   eosinophils (× 103/mm3)* 0.51 0.48 0.52
Blood RBC (× 106/mm3)* 6.2 6.8 7.00
HGB (g/dL)* 11.6 12.2 13.40
HCT (%)* 32 34 34

The concentration of total protein, casein and lactose in milk from cows with subclinical and clinical mastitis caused by Streptococcus spp_ and in milk from healthy cows

Symbol Sample n TP median (range) (%) CAS median (range) (%) LAC median (range) (%)
A Healthy cows’ milk 30 4.04B,C(3.64–5.28) 3.30B,C(2.84–4.19) 4.8B,C(2.64–5.19)
B SCM cows’ milk 30 3.57A(2.84–4.29) 2.92A(2.11–3.25) 4.51A(2.2–4.94)
C CM cows’ milk 30 3.7A(2.6–4.32) 2.73A(1.87–3.13) 4.01A(1.61–4.82)

The concentration of fat and fatty acids in milk from cows with subclinical and clinical mastitis caused by Streptococcus spp_ and in milk from healthy cows

Symbol Sample n Fat median (range) (%) SFA median (range) (mmol/L) UFA median (range) (mmol/L) PUFA median (range) (mmol/L)
A Healthy cows’ milk 30 4.0B,C(2.98–5.92) 2.59B,C(1.92–4.21) 0.81B,C(0.49–1.38) 0.06C(0.01–0.12)
B SCM cows’ milk 30 2.3A(0.87–3.74) 1.49A(0.59–2.39) 0.37A(0.04–1.11) 0.03A,C(0.01–0.11)
C CM cows’ milk 30 1.64A(0.86–3.13) 1.07A(0.59–1.83) 0.27A(0.01–0.79) 0.02A,B(0.01–0.06)