Table 4.
Medium-long-chain fatty acids profile and fat proportion in milk according to feeding sequence on d 141–3.
Item | Feeding sequence | SEM | P-value | ||
---|---|---|---|---|---|
2 C | LH | HL | |||
Fat and fatty acid value (%) | |||||
C10:0 | 0.374 | 0.343 | 0.373 | 0.012 | 0.496 |
C11:0 | 0.049b | 0.161a | 0.173a | 0.014 | <0.0001 |
C12:0 | 0.470 | 0.464 | 0.464 | 0.007 | 0.939 |
C14:0 | 4.340 | 4.097 | 4.091 | 0.057 | 0.150 |
C14:1 | 0.346 | 0.327 | 0.362 | 0.012 | 0.486 |
C15:0 | 0.117 | 0.109 | 0.121 | 0.005 | 0.528 |
C16:0 | 33.64a | 31.20b | 29.96b | 0.404 | <0.001 |
C16:1 | 12.02 | 10.94 | 11.01 | 0.303 | 0.312 |
C17:0 | 0.312a | 0.198b | 0.142b | 0.023 | 0.008 |
C17:1 | 0.102b | 0.163a | 0.207a | 0.011 | <0.001 |
C18:0 | 3.954 | 4.090 | 3.711 | 0.082 | 0.174 |
C18:1cis | 2.937a | 2.362b | 2.307b | 0.079 | <0.001 |
C18:1trans | 20.66b | 23.84a | 25.68a | 0.552 | <0.001 |
C18:2cis, n − 6 | 17.04b | 18.01a | 17.47ab | 0.186 | 0.113 |
C18:3, n − 3 | 1.321 | 1.191 | 1.242 | 0.045 | 0.448 |
C18:3, n − 6 | 0.088b | 0.114a | 0.125a | 0.004 | <0.001 |
C20:0 | 0.105ab | 0.120a | 0.079b | 0.006 | 0.022 |
C20:1 | 0.033c | 0.143b | 0.245a | 0.016 | <0.0001 |
C20:2 | 0.122b | 0.299a | 0.351a | 0.022 | <0.0001 |
C20:3, n − 6 | 0.069c | 0.120a | 0.097b | 0.006 | <0.001 |
C20:4, n − 6 | 0.392b | 0.448ab | 0.475a | 0.012 | 0.020 |
C22:6, n − 3 | 0.340a | 0.289b | 0.221c | 0.012 | 0.0001 |
MUFA | 36.10c | 37.77b | 39.82a | 0.367 | <0.0001 |
PUFA | 19.37b | 20.47a | 19.98ab | 0.215 | 0.127 |
SFA | 43.74a | 41.39b | 39.88b | 0.455 | 0.002 |
n − 6 | 17.58b | 18.69a | 18.16ab | 0.193 | 0.074 |
n − 3 | 1.839a | 1.481b | 1.464b | 0.038 | <0.0001 |
Fat | 6.988b | 7.976a | 6.854b | 0.148 | 0.003 |
The ratio of fatty acids | |||||
C18:1cis/C18:1trans | 0.147a | 0.099b | 0.090b | 0.005 | <0.0001 |
n − 6/n − 3 | 9.653b | 13.46a | 12.45a | 0.497 | 0.004 |
a–cValues with different letters within the same row are different (P < 0.05).
12C = fed control diet at 0600 h and 1500 h a day, respectively, LH = fed low protein diet at 0600 h and high protein diet at 1500 h a day, HL = fed high protein diet at 0600 h and low protein diet at 1500 h a day, respectively.
2The percentage values are proportions of each individual fatty acid relative to the total detectable lipid in the sample.
3n = 10.