Enzootic ataxia due to copper deficiency in captive red deer (Cervus elaphus) in Colima, Mexico
Por:
Jorge Garcia-Marquez, Luis, Ramirez-Romero, Rafael, Martinez-Burnes, Julio, Lopez-Mayagoitia, Alfonso, Alberto Ruiz-Ramirez, Johnatan, Ivan Loman-Zuniga, Edgar, Constantino-Casas, Fernando
Publicada:
1 oct 2021
Resumen:
The objective of the study was to describe a case of enzootic ataxia in
a captive Cervus elaphus (red deer) associated with copper deficiency,
in the state of Colima, Mexico. In July and October 2018, two female red
deer aged 3 and 7 yr manifested incoordination with weakness of the hind
limbs and an anatomopathological diagnosis of progressive ataxia was
established. In September 2019, a 13-yr-old female showed nervous signs
similar to the 2018 cases, so a blood sample was taken for serum copper
measurement. The animal was euthanized for post-mortem examination and
tissue samples were collected for histology, liver, kidney, forage and
soil samples were also taken for copper and molybdenum measurement. The
main lesions were found microscopically in spinal cord, which showed
leukomalacia, demyelination, spheroid bodies and neuronal chromatolysis.
The copper concentration was 2.7 in liver, 4.67 in kidney and 0.08 in
serum (mg/kg DM or ppm). The Cu:Mo ratio for soil 1 was Cu 8.48; Mo
3.00; Cu:Mo 2.83:1, soil 2: Cu 9.10; Mo 3.00; Cu:Mo 3.03:1. Forage 1: Cu
6.59; Mo 7.35; Cu:Mo 0.90:1; forage 2: Cu 2.77; Mo 6.12 +/- 0.61; Cu:Mo
0.45:1. Clinical signs, microscopic lesions, and low levels of Cu in
serum, liver, and forage are consistent with enzootic ataxia due to
primary copper deficiency. As far as known, this is the first report of
enzootic ataxia in a captive red deer in Mexico.
Filiaciones:
Jorge Garcia-Marquez, Luis:
Univ Colima, Fac Med Vet & Zootecnia, Av Univ 333 Col Viboras, Colima 28040, Mexico
Ramirez-Romero, Rafael:
Univ Autonoma Nuevo Leon, Fac Med Vet & Zootecnia, San Nicolas De Los Garza, Nuevo Leon, Mexico
Martinez-Burnes, Julio:
Univ Autonoma Tamaulipas, Fac Med Vet & Zootecnia, Ciudad Victoria, Tamaulipas, Mexico
Lopez-Mayagoitia, Alfonso:
Univ Prince Edward Isl, Atlantic Vet Coll, Charlottetown, PE, Canada
Alberto Ruiz-Ramirez, Johnatan:
Univ Colima, Fac Med Vet & Zootecnia, Av Univ 333 Col Viboras, Colima 28040, Mexico
Ivan Loman-Zuniga, Edgar:
Univ Nacl Autonoma Mexico, Fac Med Vet & Zootecnia, Ciudad De Mexico, Mexico
Constantino-Casas, Fernando:
Univ Cambridge, Dept Vet Med, Cambridge, England
gold, All Open Access; Gold
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