VI. The Sow Flashcards
time interval from weaning to service
dry period
a good sow should come back into heat & be ready for service within ____ days after weaning
3 to 7
signs of poor management practice
- low conception rate
- abortion
- Small litter size at birth & weaning
- Impaired reproduction
Lactation period should only be _____ to shorten dry period
6 weeks
How many times will you check heat occurrence in a day
twice
time during which the sow will accept the boar
heat period or estrus
ovulation takes place ____ after the onset of estrus
40 hours
sperm cell lives only _______ hours in the reproductive tract of female
28 – 48
this stage that conception & early development of the embryo takes place
1st 3-4 weeks
Advantages of early pregnancy detection
- It makes possible to cull or re-breed non pregnant, feed wasting females
- Allows closer grouping of a number of sows for a farrowing period
- It gives early warning for breeding troubles such as infantile boars or cystic ovaries
- enables the producer to make more effective use of his breeding facilities & to plan more adequately for farrowing, nursing & finishing
PREPARATIONS FOR FARROWING
- Prepare the sow
- Prepare the farrowing pen
Preparing the farrowing pen (4)
- Place guard rails to prevent sow from crushing the piglets
- Check water supply
- Place an artificial or supplemental heat for piglets
- Place light and absorbent beddings
SIGNS OF FARROWING
- Nest making (nudging of hurdles, walls & flooring, biting of hurdles & guard rails)
- ‘dog sitting’ position
- Distension & enlargement of udder of the sow
- Enlargement & swelling of the vulva
- Small round size of sow’s manure & frequent urination
- Milk letdown – the sow is to farrow in 24 hours
- Mucous discharge with meconium
- Signs of labor
kg of feed per day given at stage 1
2.0
kg of feed per day given at stage 2
2.0
stage in which we must bring the sow in the right body condition
stage 2
it increases the sow’s capacity to eat a lot of feed which is advantageous later in the lactation period
roughage
kg of feed per day given to the pregnant sow 1 month before farrowing if she is thin
2.5 - 3.0
kg of feed per day given to the pregnant sow 1 month before farrowing if she is fat and want to slim her down
1.5 + 0.5 - 1.0 roughage
roughage can be given as early in stage?
stage 2
kg of feed per day given at stage 3
- 5 (+ 0.5 – 1.0)
kg of feed per day given at stage 4
2.0
kg of feed per day given at stage 5
0
weight of embryo in 30th day
40 grams
weight of embryo in 60th day
100 grams
weight of embryo in 90th day
400 grams
weight of embryo in 115th day
1400 grams (1.4 kg)
deworming
7-14 days before farrowing
Mange treatment
14 & 7 days before breeding
Washing, scrubbing & spraying with disinfectant of pregnant sows
Before farrowing & before transfer to the farrowing pen
Pseudorabies
3 weeks before farrowing
E. coli bacteria
2 wks before farrowing
Suckling period could be from
28 days to 42 days
very critical & demanding at farrowing time
management