PT  - JOURNAL ARTICLE
AU  - Kráčmar, Stanislav
AU  - Buňka, František
AU  - Hoza, Ignác
AU  - Čechová, Leona
AU  - Valášek, Pavel
TI  - Changes in amino acids composition of cows colostrum (during first 72 hours after parturition)
DP  - 2014 Nov 30
TA  - Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis
PG  - 81--94
VI  - 55
IP  - 1
AID - 10.11118/actaun200755010081
IS  - 12118516
AB  - Changes in amino acid spectrum of colostrum within the period of 2 to 72 hours post partum were studied in dairy cows of the Czech Red Pied cattle with a genetic admixture of Black Pied Lowland breed (n = 10). Five of them were on the 1st lactation and 5 on the 2nd and/or higher lactations. Within the study period, the contents of non-essential amino acids (NEAA) and essential amino acids (EAA) decreased by 22.8-63.2% and 27.3-65.2%, resp., in dairy cows on the 1st lactation while in those on the 2nd and following lactations the corresponding values were 22.0-63.7% and 24.9-71.7%, respectively. The dependence of the course of changes in the AA spectrum of cow's colostrum on the time interval elapsing after the parturition could be characterised by a regression equation y = b&lt;sub&gt;0&lt;/sub&gt; + b&lt;sub&gt;1&lt;/sub&gt;/x + b&lt;sub&gt;2&lt;/sub&gt;/x&lt;sup&gt;2&lt;/sup&gt;.