mortality/aging
• born at expected frequency
• post natal lethality prior to weaning is high
• 71% of females and 83% of males survive to weaning
• no further deaths between weaning and 56 days of age
• maternal taurine supplementation completely corrects male but not female survival
|
growth/size/body
malocclusion
(
J:182195
)
• variable severity
|
• foreshortened nose
|
• laterally displaced
|
• "lack" of erect pinna
|
• low weight persisting until 56 days of age
|
• lower daily weight gain
• maximum weight difference relative to controls is at 21 days of age (58% of controls)
• delayed exponential growth phase
|
• body length 93% of controls in both sexes
|
behavior/neurological
• average food intake for females is 15% higher than for female controls
• female food intake is 31% higher/gm of body weight than for controls
• male food intake is 8% higher/gm of body weight than for controls
|
• plantigrade stance
|
• educed spontaneous activity
• reduced irritability
|
vision/eye
• less lacrimation
|
• partial palpebral closure
|
• delayed 2-3 days
|
skeleton
• irregular shape
|
malocclusion
(
J:182195
)
• variable severity
|
• laterally displaced
|
craniofacial
• irregular shape
|
malocclusion
(
J:182195
)
• variable severity
|
• foreshortened nose
|
• laterally displaced
|
• "lack" of erect pinna
|
limbs/digits/tail
• bulbous tips on digits
|
• contracture of one or both forelimbs between 3 and 11 days of age
|
homeostasis/metabolism
• elevated hepatic cysteine
|
• elevated plasma cysteine
|
• drastically reduced hepatic taurine
|
• reduced 23%
|
• 70% lower
|
reproductive system
• females are fertile and carry pregnancy to term but offspring fail to survive
|
• males sterile although mature sperm are present in the epididymis
|
respiratory system
• foreshortened nose
|
• laterally displaced
|
• enlarged alveolar spaces at 8 weeks of age
|
• thickened, fragmented, and disorganized elastic fibers in the lung parenchyma
|
hearing/vestibular/ear
• "lack" of erect pinna
|
endocrine/exocrine glands
• less lacrimation
|
cardiovascular system
• thickened, fragmented, and disorganized elastic fibers in the intima of intra acinar and preacinar pulmonary vessels
|