Table 4 Effect of diet and sampling time on polyunsaturated fatty acids (mean ± standard error) and total fatty acids in serum of goats

C18:2n-6

0

16.40 ± 1.3

17.00 ± 1.5^d

16.25 ± 2.1^d

0.27

0.07

30

19.00 ± 1.3

17.00 ± 0.5^d

19.66 ± 1.6^d

0.49

60

20.03 ± 2.1^a

17.24 ± 1.4^bd

14.60 ± 2.2^ce

0.01

90

18.28 ± 2.1^a

16.00 ± 3.9^be

14.00 ± 2.1^ce

0.02

P value

0.32

0.02

0.03

C18:3n-6

0

2.06 ± 0.2

1.78 ± 0.1

1.90 ± 0.2

0.54

0.22

30

2.59 ± 0.2

1.80 ± 0.2

2.00 ± 0.1

0.12

60

2.00 ± 0.2

1.30 ± 0.2

1.70 ± 0.2

0.60

90

2.50 ± 0.1

2.00 ± 0.3

2.00 ± 0.1

0.39

P value

0.13

0.21

0.10

C18:3n-3

0

3.38 ± 0.7

3.85 ± 0.6^d

2.95 ± 0.5^d

0.09

0.08

30

2.76 ± 0.6^b

4.10 ± 0.3^ad

3.32 ± 0.3^ad

0.05

60

3.99 ± 0.8^b

4.99 ± 0.8^ae

5.56 ± 0.6^ae

0.01

90

3.55 ± 1.0^c

6.34 ± 0.8^be

7.41 ± 1.7^ae

0.02

P value

0.06

0.02

0.01

C20:4n-6

0

1.65 ± 0.1

2.82 ± 0.5

1.68 ± 0.3

0.19

0.21

30

1.58 ± 0.3

1.62 ± 0.2

1.43 ± 0.2

0.90

60

3.31 ± 0.7

3.00 ± 0.7

3.06 ± 0.3

0.32

90

2.68 ± 0.6

2.57 ± 0.7

2.12 ± 0.7

0.33

P value

0.40

0.23

0.33

C20:5n-3

0

2.85 ± 1.0

3.20 ± 0.2

3.01 ± 1.0

0.47

0.16

30

3.75 ± 0.4

2.90 ± 0.4

2.64 ± 0.2

0.13

60

3.03 ± 0.4

3.49 ± 0.6

3.73 ± 0.8

0.25

90

2.54 ± 0.4

3.24 ± 0.6

2.63 ± 0.5

0.63

P value

0.72

0.81

0.63

C22:5n-3

0

2.58 ± 0.5^d

2.71 ± 0.4^d

2.53 ± 0.3^d

0.34

30

2.17 ± 0.1^d

2.41 ± 0.1^d

1.94 ± 0.4^d

0.97

0.02

60

3.12 ± 2.0^cd

4.58 ± 0.3^bd

5.26 ± 0.3^ad

0.02

90

5.55 ± 0.1^ce

7.81 ± 3.6^be

9.04 ± 2.2^ae

0.01

P value

0.04

0.04

0.02

C22:6n-3

0

2.28 ± 0.6

2.62 ± 0.5

2.14 ± 0.5

0.80

0.32

30

1.96 ± 0.3

1.14 ± 0.2

0.97 ± 0.1

0.30

60

2.13 ± 0.7

1.33 ± 0.2

1.71 ± 0.3

0.50

90

1.16 ± 0.2

1.50 ± 0.1

1.28 ± 0.1

0.91

P value

0.219

0.532

0.365

Total fatty acid (μg/mL)

0

956.65 ± 16.0

993.45 ± 28.6

918.12 ± 22.0

0.33

0.23

30

962.56 ± 37.3

1410.22 ± 27.2

1246.04 ± 41.7

0.16

60

960.45 + 45.0

837.70 ± 36.9

1359.23 ± 34.3

0.20

90

1334.5 ± 45.0

1071.88 ± 76.2

1436.67 ± 50.0

0.67

P value

0.20

0.45

0.32