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Table 3 Evaluation of the udder at time of housing-in and housing-out

From: Providing supplementary, artificial milk for large litters during lactation: effects on performance and health of sows and piglets: a case study

  Housing-in Housing-out
Treatment SGa CGb SG CG
Total number of sows 60 60 60 58
Functionalityc     
 Average number of functional teats per sow 14.0 14.2 13.5 12.8
Udder developmentd, %     
 No development 0.7 0.4 7.7 11.1
 Low-grade 5.2 4.2 9.4 10.4
 Middle-grade 35.1 35.2 28.4 22.5
 High-grade 58.9 60.3 54.6 56.1
Teat injuriese, %     
 None 99.2 98.7 97.6 97.6
 Slight 0.4 0.8 1.9 2.4
 Intermediate 0.4 0.5 0.4 0
 Severe 0.1 0.1 0.2 0
Udder skin injuriesf, %     
 None 92.2 91.7 89.6 89.6
 Slight 7.8 8.3 9.5 9.4
 Intermediate - - 0.9 0.9
  1. a SG supplemented group
  2. b CG control group
  3. cnumber of data: 849 to 892 according to treatments
  4. dnumber of data: 845 to 878 according to treatments; 4 classes: no to high-grade
  5. enumber of data: 849 to 892 according to treatments; 4 classes: no to severe
  6. fnumber of data: 849 to 892 according to treatments; 3 classes: no to intermediate