Changes in amino acid composition of goat's colostrum during first 72 hours after birth
1999
Kracmar, S. | Gajdusek, S. | Jelinek, P. | Zeman, L. | Kozel, V. | Kozlova, M. | Kracmarova, E. (Mendelova Zemedelska a Lesnicka Univ., Brno (Czech Republic). Agronomicka Fakulta)
In goats of the Brown Short Polled breed of the 2nd and higher lactations, changes in amino acid composition of colostrum were studied from 2 to 72 hours after birth. In all amino acids, a marked drop occurred in their content (10-72 %) during the period of 2-12 hours after birth. In His and Ile, a gradual increase was registered during the period of 12-48 hours. In Ser, Pro, Ala, Val, Lys, Thr, Leu and Arg, the decline occurs within 24 hours, followed by an increase within 48 hours. In Asp and Met, the same course of values was registered, when, from 2 to 24 hours after the birth, a sharp drop occurred, followed by a moderate increase within 36 hours and by a sharp increase within 48 hours. Similarly in Tyr, Cys and Phe, the same course of the curve was registered showing the decline within 36 hours after birth. In Glu content, the increase occurred within 24 hours, after this period, a gradual decline set in. In Gly, an even decline was registered during the whole period under study.
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