[Quantitative determination of protein fractions in the colostrum of clinically health dairy cows between the 1st-8th day post partum using agar gel microelectrophoresis].
Micro-agargel electrophoresis was used to determine normal value patterns in foremilk protein fractions of 50 clinically intact Friesian dairy cows, between the first and eighth days from calving. The average total protein levels recorded from foremilk samples dropped from 10.67 g/100 ml to 4.85 g/100 ml, between the first and fifth days from calving. Four fractions were clearly distinguished by electrophoretic separation. Fractions II (beta-lactoglobulin) and III (alpha-lactalbumin) increased clearly, in the course of lactation, whereas considerable drops were recorded from fractions I (serum albumin) and IV (immunoglobulin). Decline in immunoglobulin levels was from 62 rel. per cent on the first day of lactation to 25 rel. per cent on the third day. Hints are given on drinking diet for calves, and reference is made to qualitative demands on foremilk from other animals than mother.
D000818:Animals; D002417:Cattle / Q000378:metabolism*; D003126:Colostrum / Q000032:analysis*; D004587:Electrophoresis, Agar Gel; D005260:Female; D007136:Immunoglobulins / Q000032:analysis; D007768:Lactalbumin / Q000032:analysis; D007774:Lactation; D007782:Lactoglobulins / Q000032:analysis; D008894:Milk Proteins / Q000032:analysis*; D011247:Pregnancy; D012709:Serum Albumin / Q000032:analysis
D007136:Immunoglobulins; D007782:Lactoglobulins; D008894:Milk Proteins; D012709:Serum Albumin; D007768:Lactalbumin
Quantitative Bestimmungen der Eiweissfractionen der Kolostralmilch klinisch gesunder Milchkühe vom 1.-8. Tag post partum mit der Mikro-Agargel-Elektrophorese.