Chapter 6 Flashcards
(44 cards)
A good sow should come back into heat and be ready for service within _ to _ days after weaning.
3 to 7 days after weaning
The following points must be given attention to make the dry sow come back into heat in shorter period after weaning:
- Always keep the sow in good health and body condition.
- Keep the lactation period not longer than six weeks.
- Do not feed the sow on the day of weaning.
- Expose weaned sows to the boar.
If the sow does not come into heat __-__ days after weaning, hormone injection can be used as a last resort to induce heat occurrence.
10-12 days
The expected return date is __ days after mating but can occur from day __ to day __.
21 days (18 - 24 days)
Method of Pregnancy Diagnosis
- Vaginal Biopsy
- Doppler ultrasonic fetal pulse detector
- Medata or Pregtone
- Rectal examination
- has the disadvantage of requiring access to laboratory facilities and of needing costly and time-consuming histological techniques.
Vaginal biopsy
- used to detect both fetal circulation as well as uterine arterial circulation. Movement of objects such as the fetal heart and the pulsation of blood through umbilical vessels or uterine arteries in pregnant sows and gilts.
Doppler ultrasonic fetal pulse detector
- more advanced in pregnancy detection. Pregnancy detection is usually done 30 days after mating or service. Uterine fluid increases rapidly following conception and reaches detectable levels 25 to 30 days after breeding.
Medata or Pregtone
- the cheapest way of pregnancy diagnosis. The success of the method to diagnose pregnancy improves as the gestation advances.
Rectal examination
Day to start pregnancy check
25 days after breeding
Day for second heat control check
42 days after breeding
Must be done 30 days before farrowing for fetus development and body will reserve for the lactation period.
Increased in feed allowance
Must be done 14 days before farrowing to kill the eggs of the mange and lice which are on the sow’s body/skin.
First mange and lice treatment
Must done 10 days before farrowing to kill internal parasites
Deworming
Must done 7 days before farrowing to kill remaining the eggs of the mange and lice which are still on the sow’s body/skin.
Second mange and/or lice treatment
Must done 3 days before farrowing to avoid constipation and difficulty in farrowing.
Decreased the feed allowance
Interval between piglets should be no longer than __ minutes.
15 minutes
Sign of imminent parturition
- Milk-l let-down
- Taunting of mammary gland
- Swelling of vulva
- Restlessness and nervousness
Stillbirths account for - percent of all piglets born or about one in every two litters.
5-7%
About __% of all stillborn piglets are actually dead when farrowing begins; the remaining __% die between the start of farrowing and actual birth.
10% - 90%
The main cause of such deaths is ________.
suffocation
How to recognize stillbirth
- Lung floatation test
- Meconium on the skin
- Wet and long umbilical cord
The time between conception and farrowing can vary from ___ to ___ days.
110-118 days
The average gestation length in most herds is ___ days.
114 days
