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Cow serum and colostrum immunoglobulin (IgG1) concentration of five suckler cow breed types and subsequent immune status of their calves
Murphy, B.M. Drennan, Michael J O'Mara, Frank P. Earley, Bernadette
Murphy, B.M.
Drennan, Michael J
O'Mara, Frank P.
Earley, Bernadette
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2004
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IJAFR 44p205.pdf
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B.M. Murphy, M.J. Drennan, F.P. O’Mara and B. Earley. Cow serum and colostrum immunoglobulin (IgG1) concentration of five suckler cow breed types and subsequent immune status of their calves. Irish Journal of Agricultural and Food Research 44: 205–213, 2005
Abstract
The objective of this study was to determine the effect of cow breed type on (a) cow
serum and colostrum immunoglobulin (IgG1) concentrations and (b) subsequent calf
serum IgG1 concentration and zinc sulphate turbidity (ZST) units. Five cow breed
types were examined: LF (Limousin × Friesian), LLF (Limousin × (Limousin ×
Friesian)), L (Limousin), C (Charolais) and SLF (Simmental × (Limousin ×
Friesian)). Three blood samples were taken by jugular venipuncture from the cows at
approximately 90, 60 and 30 days pre partum, at parturition and at 15 days or more post
partum and from the calves at 48 (40 to 56) h post partum. Prior to suckling a 20 ml
sample of colostrum was obtained. Milk yield was estimated using the weigh-suckleweigh
technique. The decrease in serum IgG1 concentration in cows between 90 days
pre partum and parturition was greater (P < 0.01) for LF cows than all other breed
types, except SLF. There was no difference between LLF, L, C and SLF cows. There was
no effect of cow breed type on colostrum IgG1 concentration. Milk yield was higher (P
< 0.001) for LF cows than all other breed types, while that of SLF was higher than the
three remaining breed types, which were similar. Calf serum IgG1 concentration and
ZST units were higher (P < 0.01) for the progeny of LF cows than all others except
SLF. There was no difference between the progeny of LLF, L, C and SLF cows. Calf
serum IgG1 was affected by cow breed type and showed a positive relationship with cow
serum IgG1 decreases in late pregnancy.