|Reference : Signs of neurotoxicity in a Belgian Blue herd after ingestion of moulded silage|
|Scientific journals : Article|
|Life sciences : Veterinary medicine & animal health|
|Signs of neurotoxicity in a Belgian Blue herd after ingestion of moulded silage|
|[fr] Signes de neurotoxicité dans un troupeau Blanc Bleu Belge après ingestion d'ensilage moisi|
|Guyot, Hugues [Université de Liège - ULg > Département clinique des animaux de production (DCP) > Médecine interne des équidés, des ruminants et des porcs >]|
|Sandersen, Charlotte [Université de Liège - ULg > Département clinique des animaux de compagnie et des équidés > Anesthésiologie et réanimation vétérinaires >]|
|Brihoum, Mounir [> >]|
|Vandeputte, Sébastien [Université de Liège - ULg > Département des maladies infectieuses et parasitaires > Epidémiologie et analyse des risques appl. aux sc. vétér. >]|
|Rollin, Frédéric [Université de Liège - ULg > Département clinique des animaux de production (DCP) > Médecine interne des équidés, des ruminants et des porcs >]|
|British Cattle Veterinary Association|
|[en] Mycotoxins ; Cattle ; Silage ; neurology ; mortality|
|[en] After ingestion of moulded beet pulp silage, cases of cerebro-cortical necrosis (CCN) and
mortalities were observed in a dual purpose Belgian Blue (BB) herd. Contamination with
Paecilomyces spp., a mould that produces byssochlamic acid, malformins and patulin, was
Twenty-five days after progressive introduction of beet pulp silage into the ration, most of the
animals showed diminished appetite, excessive salivation and decreased milk production.
Some of them showed anorexia, head pressing and blindness while 4 animals died within 1
week after onset of neurological symptoms. The survivors had been treated successfully with
thiamine and recovered completely within five days. Once the beet pulp silage had been
identified as causative agent, it was removed from the animals’ ration and no more clinical
cases were observed.
Silage was obviously moulded and analysis revealed the presence of 1.6 million CFU
Paecilomyces spp./g of silage. Although no further investigation was undertaken to identify
the mycotoxins, intoxication with patulin was suspected, since other mycotoxins produced by
these species are less toxic. Although it has not been described that CCN can be induced by
ingestion of Paecilomyces spp., it seems that there is a close relation between ingestion of
Paecilomyces-contaminated silage and clinical signs observed in this herd.
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