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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)
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Journal of Animal Science and Biotechnology

ISSN: 2049-1891