<div><strong>Background:</strong> Among the dairy cattle production problems in Algeria, mastitis rank first in terms of socio-economic impact. Our aim is to identify the state of well-being of the udder in order to manage and control mastitis related problems.</div>

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<strong>Methods:</strong> The pH analysis of 177 cow milk samples was performed at two farms located in the Sidi Mhamed Benali region in northwest Algeria associated with an assessment (of the udder&rsquo;s cleanliness degree, the udder&rsquo;s position, the teat&rsquo;s hyperkeratosis lesion and the ITH) out over a period of one year (2020-2021).&nbsp;</div>

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<strong>Result:</strong> Analysis of mean (of cleanliness, udder position and ITH) between cold and warm season were significantly different at a value of [(4.11; 2.75); (5.19; 4.11); (56.96; 73.76)] respectively. The paper test revealed that the health of the udder is influenced by any variation in cleanliness and the ITH whose correlation coefficient is equal to 0.72 leading to the appearance of subclinical mastitis during the cold season. While during the hot season the bad milking procedure is incriminated in the appearance of hyperkeratosis lesion at a mean value equal to 1 (smooth ring stage) inducing the appearance of clinical mastitis with p&lt;0.05, moreover the cows in first lactation are the most influenced by these elicited factors. In conclusion, monitoring and evaluating the well-being of the udder around the parturition is a tool that allows better prevention of mastitis.</div>


Harm to the Well-being of the Udder at the Level of Dairy Farms of Sidi Mhamed Benali Wilaya of Relizane (Algeria)