An Epidemic of Akabane and Aino Viruses and Congenital Abnormalities in Cattle in Okayama Prefecture

Fukutomi, Toyoko; Okuda, Kouken; Akashi, Hiroomi; Ozawa, Seiichiro; Tada, Koshiro; Kayahara, Yoshimi

doi:10.12935/jvma1951.53.377

J.Jpn.Vet.Med.Assoc.

2000

DOI: 10.12935/jvma1951.53.377

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An Epidemic of Akabane and Aino Viruses and Congenital Abnormalities in Cattle in Okayama Prefecture

Toyoko Fukutomi¹,

Kouken Okuda²,

Hiroomi Akashi³

et al.

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“…This disease is endemic in Japan, and outbreaks of the disease occur at 5-to 10-year intervals [4,5,11]. The last outbreak of Akabane disease in Japan was in 1998-1999 and that outbreak led to many abortions, stillbirths, and congenital malformations of cattle [1,7,8].…”

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Loss of Milk Yield due to Akabane Disease in Dairy Cows

Horikita

Yoshinaga

Okatani

et al. 2005

The Journal of Veterinary Medical Science

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ABSTRACT. Akabane disease is an infection with clinical signs of congenital malformation and abortion in ruminants. Abnormal parturitions caused by Akabane disease result in great economic loss. The purpose of this study is to estimate the reduction in the milk yield from abnormal parturition due to Akabane disease. The data were collected from 33 Holstein cows on 11 farms. The animals had abnormal parturitions during the period from September 1998 to March 1999, and were diagnosed as having Akabane disease. The mean and standard deviation of the rate of reduction in the milk yield of 33 cows after abnormal parturition caused by Akabane disease was -11.4 ± 14.9%. The means and standard deviations of the rate of reduction of four cows calving abnormally at 220-239 days of gestation, nine cows calving abnormally at 240-270 days of gestation, and 20 cows calving abnormally at 271-300 days of gestation were -26.6 ± 24.7%, -14.7 ± 11.0%, and -6.9 ± 12.3%, respectively. In this study, we demonstrated that the rate of reduction in the milk yield in cows affected by Akabane disease was -11.4 ± 14.9%, but values as high as -26.6 ± 24.7% were reached in the comparison with the milk yield obtained after normal parturition. KEY WORDS: abnormal calving, Akabane disease, cattle, economical loss, milk yield.

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Loss of Milk Yield due to Akabane Disease in Dairy Cows

Horikita

Yoshinaga

Okatani

et al. 2005

The Journal of Veterinary Medical Science

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Congenital defects of the ruminant nervous system

Washburn¹,

Streeter²

2004

Veterinary Clinics of North America: Food Animal Practice

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An Epidemic of Akabane and Aino Viruses and Congenital Abnormalities in Cattle in Okayama Prefecture

Cited by 2 publications

References 0 publications

Loss of Milk Yield due to Akabane Disease in Dairy Cows

Loss of Milk Yield due to Akabane Disease in Dairy Cows

Congenital defects of the ruminant nervous system

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