Effect of parity and stage of lactation on milk yield, composition and quality of organic sheep milk
2012
Kralickova, S., Mendelova Univ., Brno (Czech Republic). Ustav Chovu a Slechteni Zvirat | Pokorna, M., Mendelova Univ., Brno (Czech Republic). Ustav Chovu a Slechteni Zvirat | Kuchtik, J., Mendelova Univ., Brno (Czech Republic). Ustav Chovu a Slechteni Zvirat | Filipcik, R., Mendelova Univ., Brno (Czech Republic). Ustav Chovu a Slechteni Zvirat
Effect of parity (PA), stage of lactation (SL) and interaction of PA x SL on daily milk yield (DMY), contents of total solids (TS), fat, total protein (TP) and lactose (L), somatic cell count (SCC) and bacteria counts of organic sheep milk were evaluated using 20 ewes of East Friesian breed. Ewes were on the 2nd (n = 10) and 3rd (n = 10) lactation, reared on a permanent pasture. The milk records and samplings were carried out on average on the 75th, 132th and 190th day of lactation. All variables were determined by standard methods. PA had a significant effect only on SCC. On the other hand, SL had a significant effect on DMY, TS, TP and L. SL also had a significant effect on total bacteria count, psychrotrophic bacteria count (PBC), total coliform count and SCC. The interaction of the PA x SL had a significant effect on DMY, TS, TP and PBC. Positive and significant correlations were found between SL and TS, and between SL and TP. Significant and positive correlation was observed between PA and SCC, but on the other hand, significant and negative correlation was found between SL and SCC.
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