Congenital cerebral and cerebellar anomalies in relation to bovine viral diarrhoea virus and Akabane virus in newborn calves.

Congenital malformations occur sporadically in cattle; however, congenital structural and functional disorders of the nervous system are rather common in ruminants. Among the numerous causes of congenital nervous system defects, infectious agents are highlighted in this paper. Virus-induced congenital malformations are well known, among which those caused by bovine viral diarrhoea virus (BVDV), Akabane virus (AKAV), Schmallenberg virus (SBV), Bluetongue virus (BTV), and Aino virus (AV) are the most studied.

Effect of Exogenous Progesterone or Flunixin Meglumine After AI on Serum Progesterone Concentration and Pregnancy per AI in Lactating Dairy Cows.

The objective of this study was to determine the effect of post AI administration of exogenous progesterone (P) or a prostaglandin F2α (PGF2α) synthesis inhibitor agent on serum P concentrations and pregnancy per AI (P/AI) in lactating dairy cows. Eighty lactating cows were randomly allocated to one of four treatment groups: 1) CON (control), received 5 mL of saline solution on d 6 and 14 post AI; 2) IP4 (injection of P ), received 125 mg of P im on d 6 and 14 post AI; 3) CIDR, received a controlled internal drug release insert containing 1.38g of P from d 6 to 20 post AI; and 4) FM (Flunixin Meglumine), received 0.