EFFECT OF AGE ON SOMATIC CELL COUNT AND MILK COMPOSITION  IN SHEEP MILK

NAZIK MAHMOOD  ILYAS

doi:10.26682/sjuod.2020.23.2.13

NAZIK MAHMOOD ILYAS Dept.of Science, College of Basic Education, University of Duhok, Kurdistan Region-Iraq

DOI: https://doi.org/10.26682/sjuod.2020.23.2.13

Keywords: Sheep; Subclinical mastitis; Somatic cell count; Milk

Abstract

A total of 50 sheep milk samples during lactations were used to investigate the impact of subclinical
mastitis induced Somatic Cell Count (SCC) increase on changes in chemical composition in milk. Samples
were collected and analyzed for fat, protein, lactose, solids non-fat (SNF) and total solids (TS) and SCC.
Within three stages of lactation, all milk samples were analyzed for three times. The highest average of
SCC was recorded in ewes aged 4 years (46.67) while lowest average was recorded at the age of 3-3.5 years
(34.24%). Protein content was highest at ewes aged 1-1.5, whereas highest lactose percentage recorded at
ewes aged 3-3.5. In conclusion, in high SCC milk, lactose content may be more indicative of SCC level
than milk fat, protein, SNF and TS during lactation. Age of ewes is an important factor affecting milk
composition, thus is a necessary parameter in optimizing sheep milk quality in conditions of subclinical
mastitis.

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