ORIGINAL PAPER
Milk yield and composition in line 05 dairy ewes as related to somatic cell counts
 
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Poznań University of Life Sciences, Department of Agricultural Veterinary, Wojska Polskiego 52, 61-625 Poznań, Poland
CORRESPONDING AUTHOR
J. Olechnowicz   

Poznań University of Life Sciences, Department of Agricultural Veterinary, Wojska Polskiego 52, 61-625 Poznań, Poland
Publication date: 2009-06-24
 
J. Anim. Feed Sci. 2009;18(3):420–428
 
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ABSTRACT
A total of 1512 milk samples from udder halves was collected at monthly intervals from 189 line 05 dairy ewes throughout milking periods. Each ewe was tested 4 times. Milk composition was examined in terms of somatic cell contents (SCC) in ewe milk in three groups: group 0 consisted of ewes that on each test day had ≤250 × 103 cells/ml in left and right udder halves, group 1 comprised ewes with ≤250 × 103 in one half of the udder and >250 × 103 cells/ml in the other half, whereas group 2 contained ewes that had >250 × 103 cells/ml in the left and right udder halves (also on each test day). SCC in milk from one or both halves of udders exceeding 250 × 103 cells/ml resulted in a statistically significant (P<0.01), 20.7%, decrease in daily milk production. Correlation coefficients between SCC and fat and protein percentages in milk were positive and equaled 0.24 and 0.18, respectively. A negative value of the correlation coefficient was recorded between log SCC and lactose percentage (-0.49).
 
CITATIONS (2):
1.
The relationship between somatic cells and milk traits, and their variation in dairy sheep breeds in Slovakia
M. Oravcová, L. Mačuhová, V. Tančin
Journal of Animal and Feed Sciences
 
2.
Quality of Mountain Sheep Milk Used for the Production of Traditional Cheeses
Aldona Kawęcka, Marta Pasternak, Danuta Słoniewska, Anna Miksza-Cybulska, Emilia Bagnicka
Annals of Animal Science
 
ISSN:1230-1388