Agriculture Reference
In-Depth Information
Table 9.3. Average and range of reported concentrations of major components of sow milk.
Milk
Day of lactation
2
1
3
7
12-15
20-22
27-29
42-60
Total solids %
Average
2
22.1
22.7
19.3
20.0
19.5
18.8
19.5
Range
3
18.6-27.6
19.0-27.0
18.3-20.4
18.2-22.0
17.3-23.2
17.3-20.9
17.0-21.0
Studies
4
5
6
5
4
8
4
6
Total protein %
Average
7.5
6.5
5.4
5.3
5.0
5.3
6.5
Range
5.4-10.4
4.6-9.9
3.6-6.4
4.7-7.1
3.6-6.0
5.36-5.4
5.4-8.2
Studies
7
10
9
12
9
3
6
Fat %
Average
10.1
9.7
7.6
7.4
7.5
7.0
7.1
Range
6.5-12.9
5.4-13.0
4.5-8.8
5.3-10.8
5.0-11.5
5.2-9.8
5.3-8.8
Studies
5
9
11
10
16
6
6
Lactose %
Average
4.3
4.6
5.2
5.2
5.1
5.6
5.0
Range
4.0-4.5
3.8-5.3
4.7-5.6
5.1-6.3
4.0-5.8
4.9-6.0
4.3-5.7
Studies
5
8
8
7
13
3
5
Ash %
Average
0.75
0.79
0.81
0.90
0.86
0.89
1.02
Range
0.75-0.76
0.74-0.82
0.76-0.87
0.77-1.33
0.76-0.95
0.82-1.06
0.84-1.14
Studies
3
3
3
5
5
4
4
Energy kJ/g
Average
6.5
6.0
5.4
4.9
5.0
4.4
Range
--
5.5-6.5
5.1-5.6
4.6-5.3
4.2-5.1
4.2-4.7
Studies
1
3
4
5
6
2
1
Defined as approximately 48 h post-parturition or >24 h after birth of the first piglet.
2
Average of values from studies that included mammary secretion sampling at the respective time relative to parturition.
3
Range of values from studies included in determining the average value.
4
Number of studies included in determining the average value. Values are from mean of multiple animals (such as from Perrin, 1955) or multiple
experiments (such as from Jackson
et al.,
1995), from control groups when the study included experimental treatments, or from overall component
concentrations when given. References used to calculate average are listed in Table 9.1.
fat milk components, primarily representing protein, lactose and ash. Reporting of SNF
content was prevalent in earlier studies (see Table 9.1 for sample references), however,
more recent studies have either reported each major milk component separately or focused
on measuring one or two specific components, such as fat or immunoglobulin content.
