Blood types in cattle of Iberian ancestry and in Holsteins at various altitudes

German Ramirez From the Division of Nephrology and Hypertension, Department of Internal Medicine, James A. Haley Veterans Administration Hospital and the College of Medicine, University of South Florida, Tampa, FL 33612 (Ramirez, Bittle) the Department of Zoology and Genetics, Iowa State University, Ames, IA 50011 (Miller); the Cooperativa de Productos Lacteos de Narino, Pasto, Columbia (Hidalgo, Santacruz); and the Pulmonary Medicine Section, Dartmouth Medical School, and VAM & ROC, White River Junction, VT 05001 (Colice).

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Wilmer J. Miller From the Division of Nephrology and Hypertension, Department of Internal Medicine, James A. Haley Veterans Administration Hospital and the College of Medicine, University of South Florida, Tampa, FL 33612 (Ramirez, Bittle) the Department of Zoology and Genetics, Iowa State University, Ames, IA 50011 (Miller); the Cooperativa de Productos Lacteos de Narino, Pasto, Columbia (Hidalgo, Santacruz); and the Pulmonary Medicine Section, Dartmouth Medical School, and VAM & ROC, White River Junction, VT 05001 (Colice).

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Polly A. Bittle From the Division of Nephrology and Hypertension, Department of Internal Medicine, James A. Haley Veterans Administration Hospital and the College of Medicine, University of South Florida, Tampa, FL 33612 (Ramirez, Bittle) the Department of Zoology and Genetics, Iowa State University, Ames, IA 50011 (Miller); the Cooperativa de Productos Lacteos de Narino, Pasto, Columbia (Hidalgo, Santacruz); and the Pulmonary Medicine Section, Dartmouth Medical School, and VAM & ROC, White River Junction, VT 05001 (Colice).

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Alvaro Hidalgo From the Division of Nephrology and Hypertension, Department of Internal Medicine, James A. Haley Veterans Administration Hospital and the College of Medicine, University of South Florida, Tampa, FL 33612 (Ramirez, Bittle) the Department of Zoology and Genetics, Iowa State University, Ames, IA 50011 (Miller); the Cooperativa de Productos Lacteos de Narino, Pasto, Columbia (Hidalgo, Santacruz); and the Pulmonary Medicine Section, Dartmouth Medical School, and VAM & ROC, White River Junction, VT 05001 (Colice).

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Rafael Santacruz From the Division of Nephrology and Hypertension, Department of Internal Medicine, James A. Haley Veterans Administration Hospital and the College of Medicine, University of South Florida, Tampa, FL 33612 (Ramirez, Bittle) the Department of Zoology and Genetics, Iowa State University, Ames, IA 50011 (Miller); the Cooperativa de Productos Lacteos de Narino, Pasto, Columbia (Hidalgo, Santacruz); and the Pulmonary Medicine Section, Dartmouth Medical School, and VAM & ROC, White River Junction, VT 05001 (Colice).

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Gene Colice From the Division of Nephrology and Hypertension, Department of Internal Medicine, James A. Haley Veterans Administration Hospital and the College of Medicine, University of South Florida, Tampa, FL 33612 (Ramirez, Bittle) the Department of Zoology and Genetics, Iowa State University, Ames, IA 50011 (Miller); the Cooperativa de Productos Lacteos de Narino, Pasto, Columbia (Hidalgo, Santacruz); and the Pulmonary Medicine Section, Dartmouth Medical School, and VAM & ROC, White River Junction, VT 05001 (Colice).

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Summary

Gene frequencies of rbc antigens were determined in Holsteins and Colombian (criollas) cattle living at 3,000 m, and in cattle descended from fighting bulls (Vacas de lidia) living at 2,500 m. These frequencies were compared with those of Holsteins, cattle native to Florida (scrub cattle), longhorns, and native cattle from Brazil (caracu cattle) living at sea level. The criollas, Vacas de lidia, scrub cows, longhorns, and caracu are descendants of original Iberian stock introduced to the Americas. We found that despite common ancestry (scrub cattle, longhorns, criollas, and caracu), genetic differences may have been derived through years of demographic isolation. The most remarkable blood-group differences were found in the high prevalence of the B system phenogroup (heritable group of antigenic factors) BQA'G'34 in the Vacas de lidia, and of the S system phenogroup U1H' in these cattle and in caracu. Furthermore, the gene frequencies differed in the Holsteins maintained at moderately high altitude (descended from Holsteins kept at sea level), and may have been reflective of the need to adapt to moderately high altitude and chronic hypoxemic conditions. Blood group polymorphism was found in all groups of cattle, although it was reduced in the Vacas de lidia, possibly because their breeding has been carefully controlled and they appear to be highly inbred.

Summary

Gene frequencies of rbc antigens were determined in Holsteins and Colombian (criollas) cattle living at 3,000 m, and in cattle descended from fighting bulls (Vacas de lidia) living at 2,500 m. These frequencies were compared with those of Holsteins, cattle native to Florida (scrub cattle), longhorns, and native cattle from Brazil (caracu cattle) living at sea level. The criollas, Vacas de lidia, scrub cows, longhorns, and caracu are descendants of original Iberian stock introduced to the Americas. We found that despite common ancestry (scrub cattle, longhorns, criollas, and caracu), genetic differences may have been derived through years of demographic isolation. The most remarkable blood-group differences were found in the high prevalence of the B system phenogroup (heritable group of antigenic factors) BQA'G'34 in the Vacas de lidia, and of the S system phenogroup U1H' in these cattle and in caracu. Furthermore, the gene frequencies differed in the Holsteins maintained at moderately high altitude (descended from Holsteins kept at sea level), and may have been reflective of the need to adapt to moderately high altitude and chronic hypoxemic conditions. Blood group polymorphism was found in all groups of cattle, although it was reduced in the Vacas de lidia, possibly because their breeding has been carefully controlled and they appear to be highly inbred.

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