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

	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

1 * – average counts for all animals from each group; WBC – white blood cell count; RBC – red blood cell count; HGB – haemoglobin; HCT – haematocrit

Table 2.

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	4.04^B,C (3.64–5.28)	3.30^B,C (2.84–4.19)	4.8^B,C (2.64–5.19)
B	SCM cows’ milk	30	3.57^A (2.84–4.29)	2.92^A (2.11–3.25)	4.51^A (2.2–4.94)
C	CM cows’ milk	30	3.7^A (2.6–4.32)	2.73^A (1.87–3.13)	4.01^A (1.61–4.82)

1 TP – total protein; CAS – casein; LAC – lactose; SCM – subclinical mastitis; CM – clinical mastitis; n – number of samples

Data are presented as median, minimum and maximum values

Statistical analysis was performed using the Mann-Whitney U test. Uppercase superscript letters indicate significant difference (P < 0.05) between this parameter and its counterpart in the group indicated by matching symbol (A-C)

Table 3.

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	4.0^B,C (2.98–5.92)	2.59^B,C (1.92–4.21)	0.81^B,C (0.49–1.38)	0.06^C (0.01–0.12)
B	SCM cows’ milk	30	2.3^A (0.87–3.74)	1.49^A (0.59–2.39)	0.37^A (0.04–1.11)	0.03^A,C (0.01–0.11)
C	CM cows’ milk	30	1.64^A (0.86–3.13)	1.07^A (0.59–1.83)	0.27^A (0.01–0.79)	0.02^A,B (0.01–0.06)

1 SFA – saturated fatty acids; UFA – unsaturated fatty acids; PUFA – polyunsaturated fatty acids; SCM – subclinical mastitis; CM – clinical mastitis; n – number of samples

Data are presented as median, minimum and maximum values. Statistical analysis was performed using the Mann-Whitney U test. Uppercase superscript letters indicate significant difference (P < 0.05) between this parameter and its counterpart in the group indicated by matching symbol (A-C)

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DOI: https://doi.org/10.2478/jvetres-2023-0028 | Journal eISSN: 2450-8608 (formerly 2300-3235)

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Language: English

Page range: 251 - 257

Submitted on: Jan 20, 2023

Accepted on: May 10, 2023

Published on: Jun 16, 2023

Published by: National Veterinary Research Institute in Pulawy

In partnership with: Paradigm Publishing Services

Keywords:

cows,

Related subjects:

Microbiology and virology,

Life sciences, other,

Medicine,

Veterinary medicine

© 2023 Mariola Bochniarz, Przemysław Błaszczyk, Marek Szczubiał, Iosif Vasiu, Łukasz Adaszek, Katarzyna Michalak, Dorota Pietras-Ożga, Marco Wochnik, Roman Dąbrowski, published by National Veterinary Research Institute in Pulawy
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Volume 67 (2023): Issue 2 (June 2023)