Skip to main content

Research, Policy and Practice

Table 3 Effect of genotype, lactation stage and interaction between genotype and lactation stage on selected classes of fatty acid, ratios and atherogenicity index of milk from free-ranging indigenous goats

From: Comparative fatty-acid profile and atherogenicity index of milk from free grazing Nguni, Boer and non-descript goats in South Africa

Fatty acid ratios Genotype Lactation P value
Nguni (10) Boer (10) Non-descript (10) Early Late G L G × L
Total saturated fatty acids (SFA) 68.65c ± 1.08 73.77a ± 1.73 71.73ab ± 1.27 68.62b ± 1.14 74.14a ± 1.12 0.0319 0.0011 0.2455
Total monounsaturated fatty acids (MUFA) 27.92a ± 1.07 22.90bc ± 1.72 23.90b ± 1.25 27.51a ± 1.13 22.31b ± 1.11 0.0159 0.0019 0.1958
Total polyunsaturated fatty acids (PUFA) 3.41b ± 0.14 3.31bc ± 0.23 4.35a ± 0.17 3.86a ± 0.15 3.53a ± 0.15 0.0001 0.1392 0.0626
Total omega-6 fatty acids (n-6) 2.19b ± 0.09 2.13bc ± 0.14 2.82a ± 0.10 2.46a ± 0.09 2.30a ± 0.09 0.0001 0.2214 0.2725
Total omega-3 fatty acids (n-3) 1.22b ± 0.07 1.19bc ± 0.11 1.53a ± 0.08 1.39a ± 0.07 1.23a ± 0.07 0.0117 0.1448 0.0110
PUFA/SFA 0.05b ± 0.002 0.04bc ± 0.003 0.06a ± 0.002 0.05a ± 0.002 0.04b ± 0.002 0.0059 0.0337 0.1032
n-6/n-3 1.91a ± 0.07 1.83a ± 0.12 1.94a ± 0.09 1.94a ± 0.08 1.94a ± 0.08 0.7753 0.4989 0.0075
Atherogenicity index 2.34a ± 0.17 2.60a ± 0.027 2.35a ± 0.20 2.39a ± 0.17 2.39a ± 0.17 0.7025 0.7050 0.2118
  1. Mean (± S.E.) values within rows with different superscripts differ significantly (P < 0.05) between genotypes and lactation stages
  2. S.E. standard error