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Table 5 Effects of meal frequency on the nitrogen balance in gilts1,2,3

From: Beneficial effects of a decreased meal frequency on nutrient utilization, secretion of luteinizing hormones and ovarian follicular development in gilts

Items

T1

T2

T6

P-value

Nitrogen balance, g/d

 Intake

70.04

70.04

70.04

1.00

 Fecal excretion

6.29 ± 0.93

7.68 ± 0.88

8.50 ± 1.59

0.408

 Urine excretion

24.09 ± 0.99a

32.02 ± 2.14b

32.26 ± 3.32b

0.027

 Absorbed N

63.74 ± 0.93

62.36 ± 0.88

61.54 ± 1.59

0.408

 Retained N

39.08 ± 1.50a

30.34 ± 2.55b

29.27 ± 3.94b

0.040

 N net utilization, %4

55.80 ± 2.14a

43.32 ± 3.64b

41.80 ± 5.63b

0.039

 N digestibility, %

91.01 ± 1.33

89.04 ± 1.26

91.75 ± 1.31

0.189

 Retention ratio, %5

61.31 ± 2.16a

48.46 ± 3.80b

47.20 ± 5.83b

0.044

  1. 1Results are presented as means ± SEMs. n = 8
  2. 2T1 means gilts fed one meal per day, T2 means gilts fed two meals per day, and T6 means gilts fed six meals per day
  3. 3Different letters a, b denote P < 0.05
  4. 4N net utilization, % = N retained/N intake × 100
  5. 5Retention ratio, % = N retained/N absorbed × 100