Variation of serum inorganic phosphorus and association with haemoglobinuria and osteomalacia in female water buffaloes in Pakistan.
Data from an animal health service in the Punjab of Pakistan showed that 39 adult female buffaloes with haemoglobinuria were 21 times more likely to have serum inorganic phosphorus (serum P) levels < 0.97 mmol/l than 24 controls sampled during the period of case occurrence (December 1984-March 1985). Age > 7 years or early lactation (1-60 days post partum) were unrelated to the disease. Similarly, symptoms of osteomalacia in 19 multiparous buffaloes were associated with low P (OR = 14.3) but not with age. Subsequently, a serum survey was carried out from February 1985 to July 1987 to investigate serum P variations with season and host factors. Data from 139 farms (426 adult female buffaloes, 468 lactations) indicated strong farm and seasonal effects on serum P. Serum P declined during the study period and was lowest during December-March 1985/1986 and again 1986/1987. Calving season, parity > 1, high pregnancy > 6 months, or daily milk production were not related to serum P in the final model. Seasonal effects were interpreted as soil borne and related to feed changes from maize to berseem in December.
Heuer
C
C
DVM, LGL Athiopien/Eritrea, Deutsche Gesellschaft für Technische Zusammenarbeit (GTZ), Eschborn, Germany. cord.heuer@t-online.de
Bode
E
E
D000821:Animal Feed; D000818:Animals; D002020:Buffaloes; D016022:Case-Control Studies; D005260:Female; D006456:Hemoglobinuria / Q000097:blood / Q000453:epidemiology / Q000662:veterinary*; D007774:Lactation / Q000097:blood / Q000502:physiology; D016014:Linear Models; D016017:Odds Ratio; D010018:Osteomalacia / Q000097:blood / Q000453:epidemiology / Q000662:veterinary*; D010154:Pakistan / Q000453:epidemiology; D010298:Parity / Q000502:physiology; D010758:Phosphorus / Q000097:blood*; D012621:Seasons
D010758:Phosphorus