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Table 4 Body composition of sow fed high crude protein (HCP; 192.4 g/kg crude protein) and low crude protein (LCP; 140.0 g/kg crude protein) diets and exposed to thermal neutral and heat stress conditionsa

From: Effect of dietary near ideal amino acid profile on heat production of lactating sows exposed to thermal neutral and heat stress conditions

Item  Thermal neutral Heat stress
  HCP LCP SEMb P-value HCP LCP SEMb P-value
Number of sowsc 6 6 6 6
Parity 3 3 3 4
Body protein, %
 Day 1 16.7 16.6 0.3 0.841 16.5 16.6 0.3 0.877
 Day 10 16.8 16.7 0.3 0.849 16.6 16.7 0.3 0.639
 Wean 16.9 17.1 0.3 0.565 16.7 16.8 0.3 0.863
Protein changed, g/d
 Overall −38.7 −7.1 29.7 0.560 20.9 −87.5 29.7 0.056
 Early 74.8 −9.8 55.0 0.329 42.4 −10.4 55.0 0.540
 Peak −161.3 −22.2 55.0 0.116 2.2* − 267.9* 55.0 0.005
Protein tissue changed, g/d
 Overall −193.5 −35.5 148.5 0.560 104.5 − 437.5 148.5 0.056
 Early 374.0 −49 275.0 0.329 212.0 −52.0 275.0 0.540
 Peak − 806.5 − 111.0 275.0 0.116 11.0* − 1339.5* 275.0 0.005
Body lipid, %
 Day 1 18.0 18.2 1.8 0.926 19.0 19.7 1.8 0.729
 Day 10 17.8 17.7 1.5 0.925 18.9 19.1 1.5 0.897
 Wean 16.8 15.9 1.7 0.572 18.1 18.4 1.7 0.845
Lipid changed, g/d
 Overall − 206.2 − 337.9 64.1 0.296 − 105.3 − 276.7 64.1 0.179
 Early −52.5 − 222.1 137.2 0.438 −3.8 −190.6 137.2 0.394
 Peak − 415.9 −503.5 137.2 0.687 − 232.2 − 523.1 137.2 0.190
Lipid tissue changed, g/d
 Overall − 247.4 − 405.5 76.9 0.296 − 126.4 − 332.0 76.9 0.179
 Early −63.0 − 266.5 164.6 0.438 −4.6 −228.7 164.6 0.394
 Peak − 499.1 − 604.2 164.6 0.687 − 278.6 − 627.7 164.6 0.190
  1. aData are least squares means. Overall: d 1-wean; early: d 1–10; peak: d 10-wean
  2. bMaximum value of the standard error of the means
  3. cTwo sows were weaned on days 15 (LCP under TN) and 16 (LCP under HS) and their performance data (feed intake, litter weight gain, piglet ADG for day 10 to weaning) were excluded from the analyses
  4. dThe main effect of lactation stage (early vs. peak) was significant for sow body lipid (tissue) and body protein (tissue) change
  5. *Within the same diet, environments differed (P < 0.05)
  6. Within the same diet, environments tended to differ for overall protein (tissue) change (P = 0.072)