Breeding and genetics Nutrition Aquaculture and Fisheries Adaptation Physiology Cell Biology and Immunology Experimental Zoology Department of Animal Science Wageningen University
Breeding and genetics Nutrition Aquaculture and Fisheries Adaptation Physiology Cell Biology and Immunology Experimental Zoology Department of Animal Science.
Dec 18, 2015
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- 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
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- 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
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- Weaning related problems, due to age at weaning not familiar with dry feed Possible solution: Make pigs familiar with dry feed before weaning
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- Intermittent suckling: Suckling inhibited for 12 h per day from D14 of lactation
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- Feed intake before and after weaning Eat before weaning = eat after weaning Kuller et al., 2000
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- Feed intake before and after weaning Kuller et al., 2000
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- Distribution of feed intake during lactation Kuller et al., 2000 Intermittent suckling increases feed intake during lactation
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- 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
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- Growth in the IS model
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- Feed intake in the IS model
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- Relative growth from milk and dry feed
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- 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
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