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Table 3 Effects of late gestation supplementation of Ca salts of saturated/monounsaturated fatty acids (CON) or polyunsaturated fatty acids (PUFA) on relative concentrations of selected plasma fatty acids in cows1

From: Effects of supplements differing in fatty acid profile to late gestational beef cows on cow performance, calf growth performance, and mRNA expression of genes associated with myogenesis and adipogenesis

Item

Mid-sup2

At-calving3

SEM

P-values6

CON4

PUFA5

CON

PUFA

Trt

Time

Trt × time

C15:0

39.6

42.1

27.4

31.8

1.95

0.15

< 0.01

0.58

C16:0

1257

1183

1380

1362

58.1

0.44

0.04

0.65

C16:1c9

10.2

16.1

28.4

35.7

4.95

0.12

< 0.01

0.86

C17:0

62.2

61.6

49.0

59.0

4.60

0.27

0.11

0.26

C18:0

1387

1396

1009

1048

49.8

0.70

< 0.01

0.63

C18:1c9

961

800

1225

1077

92.4

0.09

0.03

0.95

C18:2n-6

1190

1176

751

875

50.7

0.39

< 0.01

0.11

C18:3n-3

262a

252a

173b

98c

20.9

0.08

< 0.01

0.05

C20:0

2.7

4.4

3.1

4.5

0.38

< 0.01

0.61

0.78

C20:3n-6

141

89

96

73

13.0

0.05

< 0.01

0.07

C20:4n-6

195a

213a

49b

31c

8.5

0.97

< 0.01

0.03

C20:5n-37

40.2

93.2

33

57.5

–

< 0.01

0.03

0.50

C22:6n-3

4.8

26.4

7.2

20.7

4.09

0.01

0.59

0.22

  1. 1Data are presented as relative concentration per 100 μL plasma to internal standard C23:0; means within a row with different superscript differ at P ≤ 0.05 
  2. 2Mid-supplementation was d − 42 of the experiment
  3. 3At-calving plasma samples were collected from dams 5 ± 2.4 d post-calving
  4. 4CON = cows were supplemented soybean hulls mixed with 155 g DM/cow/d EnerGII (Virtus Nutrition LLC, Corcoran, CA) for 77 ± 6 d prepartum
  5. 5PUFA = cows were supplemented soybean hulls mixed with 80 g DM/cow/d Strata + 80 g DM/cow/d Prequel (Virtus Nutrition LLC, Corcoran, CA) for 77 ± 6 d prepartum
  6. 6Trt Treatment effect, Trt × time Interaction between treatment and time
  7. 7Data were transformed for statistical analysis because of non-normal distribution; Means are presented after back-transformation