Pregnancy Failure Canine Feline Porcine Dog and cat Canine - PowerPoint PPT Presentation

Pregnancy Failure Canine Feline Porcine

Dog and cat

Canine conceptus

Dogs and Cats Zonary placenta  sampling

Expectations - Dogs Up to 20% mortality 103 puppies from 24 dogs  3 stillborn  11 died within 48 hrs 27,221 female dogs  Abortion – 6.8%  Stillbirth – 7.4%

Expectations - Feline Litter size 4.6 Birth weight 93.5g Stillbirth 7.2% Perinatal mortality 9.1% (to 8 weeks) Andrew H Sparkes, Katherine Rogers, William E Henley, Danielle A Gunn-Moore , Julia M May, Timothy J Gruffydd- Jones, Claire Bessant. A questionnaire-based study of gestation, parturition and neonatal mortality in pedigree breeding cats in the UK. J Fel Med Surg 2006 8: 145-157

Dogs Bacteria Streptococcus spp  Brucella canis  Salmonella  Campylobacter  Mycoplasma/Ureaplasma  Other  Viruses Canine herpesvirus  Canine distemper/hepatitis  Protozoa Toxoplasma  Neospora  Endocrine Progesterone deficiency (hypoluteism)  Hypothyroidism 

Canine herpesvirus Neonates to 4 wks Temperature 32 0 C

Cats Feline herpesvirus Feline calicivirus FIV, FeLV Salmonella

Pigs No diagnosis 72 Infectious 28  Porcine parvovirus  Porcine Reproductive and Respiratory Syndrome  Porcine circovirus 2  Leptospirosis

Specific differences large litter size and placental structure means competition for space - mummies, stillbirths, resorption. all membranes are fused necrosis of tips of placenta normal. areolae present much mineral

Porcine placenta

Necrotic tips

SMEDI Stillbirth, mummification, embryonic death, infertility

Regionally important Pseudorabies (porcine herpesvirus) Mycotoxins