The importance of a high feed intake during lactation of primiparous sows nursing large litters.

@article{Eissen2003TheIO,
  title={The importance of a high feed intake during lactation of primiparous sows nursing large litters.},
  author={J. J. Eissen and E J Apeldoorn and Egbert Kanis and Martin W. A. Verstegen and Karel H. De Greef},
  journal={Journal of animal science},
  year={2003},
  volume={81 3},
  pages={
          594-603
        }
}
The objective of this study was to investigate whether nursing a large number of piglets has negative effects on lactation and postweaning performance of primiparous sows and whether a greater lactation feed intake can prevent possible negative effects. Data were recorded on 268 ad libitum-fed sows of three genotypes (G1, G2, and G3) in an experiment where litter size was standardized to 8, 11, or 14 piglets during a 4-wk lactation. Compared to G1 and G2, G3 sows were heavier (P < 0.05) and… 
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Influence of litter size on metabolic status and reproductive axis in primiparous sows.
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Besides litter size, a sow's metabolic status in lactation influences follicular maturation after weaning and the metabolic adaptations by which primiparous sows nursing large litters increase litter growth rate and body reserve mobilization do not involve an accentuated peripheral insulin resistance are indicated.
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Analysis of the feeding pattern and the profile of feed intake tested the hypothesis that lactating sows would exhibit different feeding strategies depending on the diet during pregnancy and pointed out the role of an early feeding experience on the development of feeding behavior during the first reproductive cycle.
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TLDR
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Sows with high milk production had both a high feed intake and high body mobilization.
TLDR
Both a high feed intake and a high mobilization of body reserves was a prerequisite for a high milk production and future research should therefore, focus on optimizing the dietary energy and nutrient concentrations of diets for lactating hyper-prolific sows and herein distinguish between primiparous and multiparous sows.
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Lactation FI and DE and lysine intake in the second half of lactation were the main drivers of litter WW and Variation in CIn was mainly explained by 24-h weight, birth weight, and the duration of farrowing.
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  • Biology, Medicine
    Animal science journal = Nihon chikusan Gakkaiho
  • 2014
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Findings indicated that adding FMA flavor was superior to SB for increasing feed intake of lactating sows and improving growth performance of piglets.
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Moderately increased energy intake during gestation improves body condition of primiparous sows, piglet growth performance, and milk fat and protein output
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