Management and production factors influencing immunoglobulin G1 concentration in colostrum from Holstein cows

Immunoglobulin G1 concentration was measured in 919 first milking colostrums from Holstein cows during a 4-yr period on a commercial dairy farm. Sources of variation analyzed for effect on colostral IgG1 concentration were season of calving, lactation number, dry period length, intercalving interval...

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Bibliographic Details
Published in:Journal of dairy science 1991-07, Vol.74 (7), p.2336-2341
Main Authors: Pritchett, L.C. (Washington State University, Pullman), Gay, C.C, Besser, T.E, Hancock, D.D
Format: Article
Language:English
Subjects:
ALIMENTACION DE LOS ANIMALES
ALIMENTATION DES ANIMAUX
Animals
CALOSTRO
Cattle - immunology
COLOSTRUM
Colostrum - immunology
Female
IMMUNITE MATERNELLE
Immunoglobulin G - analysis
IMMUNOGLOBULINE
INMUNIDAD MATERNAL
INMUNOGLOBULINA
Labor, Obstetric
Lactation - immunology
Least-Squares Analysis
NUMERO DE LACTACION
NUMERO DE LACTATION
PESO
POIDS
Pregnancy
RACE
RAZAS
Regression Analysis
Seasons
TERNERO
VACAS LECHERAS
VACHE LAITIERE
VEAU
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Summary:Immunoglobulin G1 concentration was measured in 919 first milking colostrums from Holstein cows during a 4-yr period on a commercial dairy farm. Sources of variation analyzed for effect on colostral IgG1 concentration were season of calving, lactation number, dry period length, intercalving interval, complete lactation milk and fat production, weight of first milking colostrum, and time from calving to first milking. Weight of first milking colostrum was the variable most highly correlated (negatively) with colostral IgG1, concentration (r = -.29). Weight of first milking colostrum and lactation number of the cow were die most significant discriminators between colostrum of low and high IgG1 concentration. The implications of these results for colostrum feeding management are discussed
ISSN:0022-0302
1525-3198
DOI:10.3168/jds.S0022-0302(91)78406-3