1994, Number 2
Association of periparturient disorders and mastitis with parity in Holstein cows and month of maximum occurrence of these disorders
PDF size: 325.76 Kb.
ABSTRACTInfluences of parity and months regarding ocurrence of periparturient disorders in Holstein cows were studied. Data from a large commercial dairy herd in northeastern Mexico was studied analizing the reproductive disorders and mastitis cases that ocurred in 6565 lactations. Odds ratio analysis indicated that the risk of retained placenta, milk fever and mastitis increased with parity. Risk of milk fever decreased significantly in the youngest cows (odds ratio = 0.31), but increased markedly in cows with more than 5 calvings (odds ratio = 2.14 to 5.80). The youngest cows had an increased risk of metritis and ovanan cysts (odds ratio = 1.53 and 1.32 for 1-2 parity; P ‹ 0.05). Edward's test indicated that there were significant peaks in March, August, September and July for retained placenta, metritis, ovarian cysts and mastitis, respectively (P ‹ 0.05). No significant seasonal pattern was detected for milk fever.
Bierschwal, C.J.: A clinical study of cystic conditions of the bovine ovary. J. Am. vet. med. Ass., 149: 1591-1593 (1966).
Blood, D.C. and Henderson, J.A.: Veterinary Medicine. 4th ed. Baillieri Tindall and Cassell, London, 1974.
Correa, M.T., Curtis, C.R., Erb, H.E., Scarlett, J.M. and Smith, R.D.: Anecological analysis of risk factors for postpartum disorders of Holstein-Friesian cows from thirty two New York farms. J. Dairy Sci., 73: 1515-1524 (1990).
Curtis, C.R., Herb, H.N., Sniffen, C.J., Smith, R.D. and Kronfeld, D.S.: Path analysis of dry period nutrition, postpartum and reproductive disorders and mastitis in Holstein cows. J. Dairy Sci., 68: 2347-2360 (1985).
DuBois, P.R. and Williams, D.J.: Increased incidence of retained placenta associated with heat stress in dairy cows. Theriogenology, 13: 115-121 (1980).
Edwards, J.H.: The recognition and estimation of cyclic trends. Ann. Hum. Genet., 25: 83-86 (1961).
Erb, H.N. and Martin S.W.: Age, breed and seasonal patterns in the ocurrence of ten dairy cow diseases: A case control study. Can. J. comp. Med., 42: 1-9 (1978).
Erb, H.N. and Martin, S.W.: Interrelationships between production and reproductive diseases in Holstein cows. Age and seasonal patterns. J. Dairy Sci., 63: 1918-1924 (1980).
Fleiss, J.L.: Statistical Methods for Rates and Proportions. John Wiley & Sons, Toronto, Canada, 1973.
Joosten, I., Eldik van, P., Elving, L. and Mey van der, G.J.W.: Factors affecting occurrence of retained placenta in cattle: Effect of sire on incidence. Anim. Reprod. Sci., 25: 11-22 (1991).
Markusfeld, O.: Factors responsible for postparturient metritis in dairy cattle. Vet. Rec., 114: 539-541 (1984).
Markusfeld, O.: Periparturient traits in seven high dairy herds. Incidence rates, association with parity, and interrelationships among traits. J. Dairy Sci., 70: 158-166 (1987).
Mellado, M. and Reyes, C.: Associations between periparturient disorders and reproductive efficiency in Holstein cows in northern Mexico. Prev. vet. Med., (1994; in press).
Morse, D., DeLorenzo, M.A., Natze, R.P. and Bray, D.R.: Characterization of clinical mastitis records from one herd in a subtropical environment. J. Dairy Sci., 71: 1396-1405 (1988).
Radostits, O.M.: Coliform mastitis in cattle. Can. vet. J., 2: 401-405 (1961).
Schalm, O.W., Carroll, E.J. and Jain, N.C.: Bovine Mastitis. Lea & Febiger, Philadelphia, 1971.
Thompson, J.R., Pollak, E.J. and Pelisier, C.L.: Interrelationships of parturition problems, production of subsequent lactation, reproduction, and age at first calving. J. Dairy Sci., 66: 1119-1127 (1983).
Yrjo, G., Erb, H.N., McCulloch, C.E. and Saloniemi, H.S.: Epidemiology of reproductive disorders in dairy cattle: Associations among host characteristics, disease and production. Prev. vet. Med., 8: 25-40 (1990).