RT Journal Article
SR Electronic
A1 Zajícová, Pavlína
A1 Kuchtík, Jan
T1 Dynamics of changes in some selected components of sheep milk in the course of lactation
JF Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis
YR 2015
VO 52
IS 4
SP 119
OP 124
DO 10.11118/actaun200452040119
UL https://acta.mendelu.cz/artkey/acu-200404-0012.php
AB The objective of our study was to evaluate dynamics of changes in contents of some components of sheep milk, viz. dry matter (DM), fat (F), true protein (TP), casein (C), whey protein (WP) and lactose (L). Estimations were carried out using milk samples originating from 20 ewes (crosses of Eastfriesian and Improved Valachian breeds). All ewes under study were on the first lactation. Altogether six milk samplings were carried out, viz. on Days 46, 74, 102, 132, 162 and 190 of lactation. The average contents of DM, F, P, C, WP and L ranged, in dependence on the day of lactation, from 16.66 to 19.98%; 5.45 to 7.70%; 5.24 to 6.64%; 3.95 to 5.08%; 1.21 to 1.57% and 4.78 to 5.13%, respectively. Average contents of milk components mentioned above per lactation were as follows: 18.5%; 6.44%; 5.93%; 4.53%; 1.40% and 4.99%, respectively. Statistically significant differences between individual subsequent samplings were found in case of DM and F (between Days 132 and 162) as well as of TP (between Days 74 and 102; 102. and 132 and 132 and 162, resp.). The analysis of correlations existing between some components of sheep milk revealed that statistically highly significant (P ≤ 0.001) positive correlations existed between contents of DM and F, DM and TP and F and TP.