Componentes químicos selectos de biopsiaósea y sangre durante osteopatías metabólicas subclinicas en bovino

Abstract

CHEMICAL CONSTITUENTS WERE DETERMINED IN BONE BIOPSIES AND BLOOD OF HEALTHY FATTENED BULLS AND HEALTHY DAIRY COWS, AND DURING SUBCLINICAL METABOLIC OSTEOPATHIES. THE SAMPLE INCLUDED BULLS (N = 143, HOLSTEIN X CZECH SPOTTED BREED) AGED 10 "" 15 MONTHS WITH A BODY WEIGHT OF 300 TO 450 KG AND COWS (N = 118, CZECH SPOTTED BREED) AGED 3 TO 8 YEARS AND 2 TO 20 WEEKS POSTPARTUM. THE FOLLOWING GROUPS WERE FORMED: GROUP I OF BULLS (CONTROL, N = 47) AND GROUP I OF COWS (CONTROL, N = 57), EACH GROUP FROM 4 HERDS INCLUDED HEALTHY ANIMALS WITH BALANCED RATIONS; WITHOUT CLINICAL SIGNS OF OSTEOPATHIES IN OTHER ANIMALS, GROUP II OF BULLS INCLUDED ANIMALS WITHOUT CLINICAL SIGNS OF METABOLIC OSTEOPATHIES (N = 96) PROCEEDING FROM 8 HERDS WITH FREQUENT CASES OF CLINICAL RICKETS (21% TO 50%) IN OTHER ANIMALS; AND GROUP II OF COWS INCLUDED ANIMALS WITHOUT CLINICAL SIGNS OF METABOLIC OSTEOPATHIES (N=61) FROM 5 HERDS, BUT WITH SOME CASES OF GENERALIZED OSTEOPATHIES (10% TO 18%) IN OTHER ANIMALS. RATIONS OF GROUPS II WERE DEFICIENT IN PHOSPHORUS, ADDITIONALLY, COWS OF GROUP II HAD A CALCIUM EXCESS. SAMPLES OF BIOPSIES FROM THE ILIAC CREST AND BLOOD WERE TAKEN ONCE FROM ALL ANIMALS. BLOOD CONCENTRATIONS OF CA2, INORGANIC P AND ACID-BASE VALUES WERE NO SIGNIFICANT FOR THE DIAGNOSIS OF SUBCLINICAL METABOLIC OSTEOPATHIES. SIGNIFICANT DECREASES (P < 0.05) WERE FOUND IN BIOPSIES REGARDING ASH DRY MATTER (FFDM) AND ASH WEIGHT/CM3 SPONGY IN ANIMALS OF GROUPS II IN COMPARISON WITH GROUPS I. IN BULLS OF GROUP II SUBCLINICAL RICKETS WAS DIAGNOSED AS ASH WEIGHT/G FFDM DECREASED. OSTEOMALATIC AND OSTEOPOROTIC SUBCLINICAL PROCESSES WERE DIAGNOSED IN COWS OF GROUP II, AS ASH/G FFDM AND PER CM3 OF SPONGY WAS DECREASED. CHEMICAL ANALYSIS OF BONE BIOPSIES DEMONSTRATED THE APPLICABILITY ON THE DIAGNOSIS OF SUBCLINICAL METABOLIC OSTEOPATHIES IN BOVINES.