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The Cutting Edge - Article 22 - 18 Industry Leading Calf Experts Agree on a New Herd-Level Passive Immunity Standard
Consensus recommendations on calf- and herd-level passive immunity in dairy calves in the United States
Find the Big 3 Infographic at otovets.com/cuttingedge
Find the full article at: https://www.journalofdairyscience.org/article/S0022-0302(20)30383-0/fulltext
See the referenced research graphs by joining OTO at otovets.com/facebook
Big Take Away #1: The proposed model showed statistically significant decreases in morbidity between the poor and fair categories was observed with 10% reductions in morbidity and 5.7% percent reductions between the good and excellent categories.
This herd level model also showed mortality differences between the poor and fair groups and between the fair and good groups, totaling a 50% reduction in mortality between these groups
Big Take Away #2: Animals with elevated IgG concentrations greater than 24 g/L had significant decreases in morbidity.
This model suggests a drop from 46.1% morbidity to 28.5% if you go between the poor and excellent groups.
Big Take Away #3: Calves that were administered colostrum in one of two ways; #1 a single feeding of ~3.3L of colostrum 2 hours after birth OR #2 a multi-feeding system with the first feeding of ~2.7 L at ~2.8 hours of age and another feeding bringing the total to ~5.3L could would achieve the excellent IgG grouping.
This was determined from the NAHMS data which showed the average colostrum treatment required to achieve the "excellent" benchmark.
Ultimate Message: It is time to revisit the classic dichotomous scale of PASS or FAIL for transfer of passive immunity. This study seeks to break the stereotype that an animal with less than 2 tenths of a point of Total Protein difference is somehow more protected than one 2 tenths of a point higher. The proposed method by which herd-level passive immunity competency can be assessed and improved breaks down into excellent, good, fair and poor classifications and seeks to address normal variation within herd wide populations while properly conveying the risk associated with that variation.
Consensus recommendations on calf- and herd-level passive immunity in dairy calves in the United States
Published by J. Lombard, N. Urie, F. Garry, S. Godden, J. Quigley, T. Earleywine, S. McGuirk, D. Moore, M. Branan, M. Chamorro, G. Smith, C. Shivley, D. Catherman, D. Haines, A.J. Heinrichs, R. James, J. Maas, K. Sterner
Location: United States
Objective: The objectives of this study were to evaluate different threshold values for TPI and their relationship to mortality and morbidity using available data and come to consensus on a calf- and herd-level TPI standard. A secondary objective was to provide colostral management recommendations to meet the consensus standards.
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By Eric R
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Consensus recommendations on calf- and herd-level passive immunity in dairy calves in the United States
Find the Big 3 Infographic at otovets.com/cuttingedge
Find the full article at: https://www.journalofdairyscience.org/article/S0022-0302(20)30383-0/fulltext
See the referenced research graphs by joining OTO at otovets.com/facebook
Big Take Away #1: The proposed model showed statistically significant decreases in morbidity between the poor and fair categories was observed with 10% reductions in morbidity and 5.7% percent reductions between the good and excellent categories.
This herd level model also showed mortality differences between the poor and fair groups and between the fair and good groups, totaling a 50% reduction in mortality between these groups
Big Take Away #2: Animals with elevated IgG concentrations greater than 24 g/L had significant decreases in morbidity.
This model suggests a drop from 46.1% morbidity to 28.5% if you go between the poor and excellent groups.
Big Take Away #3: Calves that were administered colostrum in one of two ways; #1 a single feeding of ~3.3L of colostrum 2 hours after birth OR #2 a multi-feeding system with the first feeding of ~2.7 L at ~2.8 hours of age and another feeding bringing the total to ~5.3L could would achieve the excellent IgG grouping.
This was determined from the NAHMS data which showed the average colostrum treatment required to achieve the "excellent" benchmark.
Ultimate Message: It is time to revisit the classic dichotomous scale of PASS or FAIL for transfer of passive immunity. This study seeks to break the stereotype that an animal with less than 2 tenths of a point of Total Protein difference is somehow more protected than one 2 tenths of a point higher. The proposed method by which herd-level passive immunity competency can be assessed and improved breaks down into excellent, good, fair and poor classifications and seeks to address normal variation within herd wide populations while properly conveying the risk associated with that variation.
Consensus recommendations on calf- and herd-level passive immunity in dairy calves in the United States
Published by J. Lombard, N. Urie, F. Garry, S. Godden, J. Quigley, T. Earleywine, S. McGuirk, D. Moore, M. Branan, M. Chamorro, G. Smith, C. Shivley, D. Catherman, D. Haines, A.J. Heinrichs, R. James, J. Maas, K. Sterner
Location: United States
Objective: The objectives of this study were to evaluate different threshold values for TPI and their relationship to mortality and morbidity using available data and come to consensus on a calf- and herd-level TPI standard. A secondary objective was to provide colostral management recommendations to meet the consensus standards.