Pig - Anatomy
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51 Terms
What is the dental formula of a pig?
3-1-4-3 ×2
At what age do pigs typically have a complete set of teeth?
18 months
What is the vertebral formula for pigs?
C7, T14-15, L6-7, S4, Cd20-23
Where is a common site of weakness in the pig's vertebral column?
Lumbosacral junction
What is the name for the deciduous teeth in piglets?
Needle teeth
What is a unique feature of the pig's colon?
Spiral arrangement
Where is the tracheal bronchus located in pigs?
Right lung
What is the normal heart rate range for pigs?
60-80 bpm
What is the normal respiratory rate range for pigs?
10-20 bpm
What is a common site for blood sampling in pigs pre-weaning and 1-2 weeks post-weaning?
Cranial vena cava
What is a common site for blood sampling in adult pigs?
Internal jugular vein
Where is the lateral auricular vein used for in pigs?
Intravenous injection and blood sampling
What is the approximate percentage of body weight that a pig's heart represents?
0.3%
What is a unique feature of the pig's stomach?
Presence of a diverticulum
Where is the caecum located in pigs?
Left side of the abdomen
How many teats do pigs typically have?
14-16
What is the average gestation length for pigs?
114 days
What type of placenta do pigs have?
Epitheliochorial
What is the position of the scrotum in male pigs?
Perineal
What is a unique feature of the boar's penis?
Presence of a dorsal diverticulum
Which lymph node is easiest to find on post-mortem examination in pigs?
Superficial inguinal
What is the length of a typical pig's cervix?
Approximately 25 cm
What is the normal lactation length for sows?
28 days
What is the typical wean-service interval for sows?
5 days
How many litters per sow per year are typically expected in pig production?
2.4
What is the shape of the pig's uterus?
Short body with long intestiniform horns
What is the earliest day of pregnancy that can be detected by transabdominal ultrasound in pigs?
21 days
What is the function of the dorsal diverticulum in the boar's penis?
Mixing of fluid and urine for sexual pheromones
What is the normal pH range of a pig's stomach?
2-4
What is the name of the specific region in the pig's stomach prone to ulceration?
Cardiac region
What is the unique feature of the pig's orbital venous sinus?
Cooling the brain
What is the significance of the pig's rostral bone?
Attachment for muscles responsible for the mobile muzzle
Why is intubation difficult in pigs?
Larynx forms an obtuse angle with the trachea
What is the function of the circular muscle in the sow's uterus during parturition?
Can fully close one horn while opening the opposite horn
What is the name of the condition where the frontal and zygomatic processes fail to meet in pigs?
Incomplete zygomatic arch
What is the primary reason for the large sinuses in the pig's skull?
Thermoregulation of the brain
What is the unique feature of the pig's orbital venous sinus?
Cooling the brain
What is the significance of the pig's rostral bone?
Attachment for muscles responsible for the mobile muzzle
Why is intubation difficult in pigs?
Larynx forms an obtuse angle with the trachea
What is the function of the circular muscle in the sow's uterus during parturition?
Can fully close one horn while opening the opposite horn
What is the name of the condition where the frontal and zygomatic processes fail to meet in pigs?
Incomplete zygomatic arch
What is the primary reason for the large sinuses in the pig's skull?
Thermoregulation of the brain
What is the unique feature of the pig's colon arrangement?
Spiral arrangement
Where is the tracheal bronchus located in pigs?
Right lung
What is a common site of weakness in the pig's vertebral column?
Lumbosacral junction
What is the name for the deciduous teeth in piglets?
Needle teeth
What is the shape of the pig's uterus?
Short body with long intestiniform horns
What is the earliest day of pregnancy that can be detected by transabdominal ultrasound in pigs?
21 days
What is the function of the dorsal diverticulum in the boar's penis?
Mixing of fluid and urine for sexual pheromones
What is the normal pH range of a pig's stomach?
2-4
What is the name of the specific region in the pig's stomach prone to ulceration?
Cardiac region