|
June |
July |
September |
|
Main Effects Pr>F |
Breed |
Lactation |
Time |
Fat (%) |
4.3 ± 0.3a |
3.5 ± 0.1b |
3.7 ± 0.1b |
0.0008y |
NS |
NS |
|
|
|
|
|
|
|
Protein (%) |
3.4 ± 0.1 |
3.3 ± 0.1 |
3.5 ± 0.1 |
NS |
NS |
NS |
|
|
|
|
|
|
|
Milk Yield (kg/d) |
28.0 ± 0.8a |
23.3 ± 0.6b |
21.0 ± 0.5c |
0.0006 y |
NS |
NS |
|
|
|
|
|
|
|
VA (% of whole milk) |
0.119 ± 0.014b |
0.136 ± 0.005a |
0.086 ± 0.005c |
0.0100 |
0.0275 |
0.0275 |
|
|
|
|
|
|
|
VA Yield (ml/d) |
1.209 ± 0.064a |
0.897 ± 0.036b |
0.508 ± 0.024c |
NS |
NS |
NS |
|
|
|
|
|
|
|
LA (% of whole milk) |
0.101 ± 0.008a |
0.076 ± 0.004c |
0.080 ± 0.004bc |
0.0036 |
NS |
NS |
|
|
|
|
|
|
|
LA Yield (ml/d) |
0.648 ± 0.027a |
0.501 ± 0.022b |
0.468 ± 0.012b |
0.0040 |
NS |
NS |
|
|
|
|
|
|
|
CLA (% of whole milk) |
0.051 ± 0.004a |
0.040 ± 0.002b |
0.030 ± 0.002c |
NS |
0.0003y |
0.0003y |
|
|
|
|
|
|
|
CLA Yield (ml/d) |
0.012 ± 0.002a |
0.009 ± 0.001b |
0.007 ± 0.000c |
NS |
NS |
NS |
zMeans ± SEM, n=49. Different superscript letters indicate differences over time, by contrasts (p<0.05). Main effects were for Breed (Fleckvieh, Holstein, Jersey), Lactation
(early, mid late) and Time (June, July, September). y means for significant main effects due to breed or lactation are provided in the text. NS=not significant. |
