Breeding and genetics Nutrition Aquaculture and Fisheries Adaptation Physiology Cell Biology and...
Preview:
Citation preview
- Slide 1
- Breeding and genetics Nutrition Aquaculture and Fisheries
Adaptation Physiology Cell Biology and Immunology Experimental
Zoology Department of Animal Science Wageningen University
- Slide 2
- Intermittent suckling: possibilities to establish pregnancy
during lactation & benefits to piglets Marieke Berkeveld
Rosemarijn Gerritsen Pieter Langendijk In cooperation with
Veterinary Faculty in Utrecht
- Slide 3
- Weaning-induced growth check after Weary et al., 2002
weaning
- Slide 4
- Bruininx et al., 2002 Feed intake shortly after weaning Many
piglets hardly eat after weaning
- Slide 5
- Weaning related problems, due to age at weaning not familiar
with dry feed Possible solution: Make pigs familiar with dry feed
before weaning
- Slide 6
- Intermittent suckling: Suckling inhibited for 12 h per day from
D14 of lactation
- Slide 7
- Feed intake before and after weaning Eat before weaning = eat
after weaning Kuller et al., 2000
- Slide 8
- Feed intake before and after weaning Kuller et al., 2000
- Slide 9
- Distribution of feed intake during lactation Kuller et al.,
2000 Intermittent suckling increases feed intake during
lactation
- Slide 10
- Intermittent suckling increases feed intake during lactation,
But weaning at conventional age still induces a growth check
Possible solution: Also extend lactation without postponing next
pregnancy
- Slide 11
- Growth in the IS model
- Slide 12
- Feed intake in the IS model
- Slide 13
- Relative growth from milk and dry feed
- Slide 14
- Conclusions Intermittent suckling results in better adaptation
to weaning: Feed intake at weaning is considerably higher than
normally There is hardly any growth check at weaning If sow is
mated, lactation can be extended Consequences for reproduction
?
- Slide 15
- SourceStage of lactation h IS/day Boar contact? Sows in estrus
Crighton, 1970D21-D3112yes1/5 Stevenson and Davis, 1984D14-D28 6 12
no 13/20 5/10 Grinwich and McKay, 1985D21-D35 3 22 yes