Veterinary medicine and science · 2026
Comparison of the Effectiveness of Colostrum, Colostrum Powder and Combined Feeding on Transfer of Passive Immunity in Calves.
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Kaçar Yiğit, Akkaş Mehmet Emin
Аннотация
BACKGROUND: High-quality colostrum is essential to prevent failed transfer of passive immunity (FTPI) in calves, and research on colostrum substitutes has continued over time when quality colostrum is unavailable.
OBJECTIVES: This study evaluated the effects of fresh colostrum (COL), colostrum powder (POW) and a combination (MIX) on TPI in neonatal calves.
METHODS: Forty-five neonatal Holstein-Friesian calves were divided into COL (4 L fresh colostrum), POW (1080 g colostrum powder in 4 L water) and MIX (540 g powder in 4 L colostrum) groups. Total protein (TP), Brix%, and IgG concentrations were measured at 0 and 24 h. Receiver operating characteristic (ROC) analysis and logistic regression assessed their predictive power for FTPI.
RESULTS: At 24 h, the Brix%, TP and IgG values for the COL, POW and MIX groups were as follows (mean ± standard error; median [interquartile range]): Brix%: 9.4 ± 0.3 (9.4 [8.2-10]), 9.5 ± 0.2 (9.6 [8.8-9.8]) and 10.2 ± 0.2 (10.4 [9.6-10.8]); TP(g/dL): 5.9 ± 0.2 (5.8 [4.8-6.8]), 5.9 ± 0.2 (5.8 [5.5-6.2]) and 6.7 ± 0.2 (6.6 [6.2-7.4]); IgG(g/L): 16.09 ± 0.48 (16.31 [15.02-17.8]), 15.02 ± 0.58 (14.91 [13.05-17.68]) and 18.03 ± 0.29 (18.04 [16.91-19.25]), respectively. Compared to the POW and COL groups, the MIX group had higher IgG, TP and Brix% values at 24 h. Area under the curve (AUC) values were 0.72, 0.73 and 0.82 for Brix%, TP and IgG, respectively, with IgG showing the highest discriminatory power among the evaluated parameters.
CONCLUSIONS: Colostrum powder was as effective as fresh colostrum in providing sufficient TPI. Combining colostrum powder with quality colostrum further enhances immunity levels.
OBJECTIVES: This study evaluated the effects of fresh colostrum (COL), colostrum powder (POW) and a combination (MIX) on TPI in neonatal calves.
METHODS: Forty-five neonatal Holstein-Friesian calves were divided into COL (4 L fresh colostrum), POW (1080 g colostrum powder in 4 L water) and MIX (540 g powder in 4 L colostrum) groups. Total protein (TP), Brix%, and IgG concentrations were measured at 0 and 24 h. Receiver operating characteristic (ROC) analysis and logistic regression assessed their predictive power for FTPI.
RESULTS: At 24 h, the Brix%, TP and IgG values for the COL, POW and MIX groups were as follows (mean ± standard error; median [interquartile range]): Brix%: 9.4 ± 0.3 (9.4 [8.2-10]), 9.5 ± 0.2 (9.6 [8.8-9.8]) and 10.2 ± 0.2 (10.4 [9.6-10.8]); TP(g/dL): 5.9 ± 0.2 (5.8 [4.8-6.8]), 5.9 ± 0.2 (5.8 [5.5-6.2]) and 6.7 ± 0.2 (6.6 [6.2-7.4]); IgG(g/L): 16.09 ± 0.48 (16.31 [15.02-17.8]), 15.02 ± 0.58 (14.91 [13.05-17.68]) and 18.03 ± 0.29 (18.04 [16.91-19.25]), respectively. Compared to the POW and COL groups, the MIX group had higher IgG, TP and Brix% values at 24 h. Area under the curve (AUC) values were 0.72, 0.73 and 0.82 for Brix%, TP and IgG, respectively, with IgG showing the highest discriminatory power among the evaluated parameters.
CONCLUSIONS: Colostrum powder was as effective as fresh colostrum in providing sufficient TPI. Combining colostrum powder with quality colostrum further enhances immunity levels.