ORIGINAL PAPER
Morphological characteristics of udders as
selection criteria for improvement of mammary
gland health and productivity of sheep.
2. The relationship between udder morphology
and the health and productivity of ewes
			
	
 
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				1
				Department of Genetics and Animal Breeding, Warsaw Agricultural University,
Przejazd 4, 05-840 Brwinów, Poland
				 
			 
										
				
				
		
		 
			
			
		
		
		
		
		
			
			 
			Publication date: 1993-06-21
			 
		 			
		 
	
							
									
		
	 
		
 
 
J. Anim. Feed Sci. 1993;2(3):117-127
		
 
 
KEYWORDS
ABSTRACT
The health of the mammary gland and productivity ofthree breeds of sheep, Polish Merino, Polish
Lowland and Polish Highland, were studied in relation to udder morphology. The contamination of
milk by pathological strains of bacteria (Staphylococci and Streptococci) was found in 15-20% of
ewes. The ewes with over- or undersized (> x ± SD, < x ± SD) udders developed mastitis more
frequently than did those with udder sizes within the limits of x ± SD. Significant correlations were
found between the morphological traits of udders and milk yield of the Polish Highland ewes and the
rearing results of Merino and Polish Lowland lambs.