Characterization of fat globules and milk fat globule membrane proteins in milk of different yak breeds

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Table II.

Characteristics of yak milk fat globule from different yak breeds.

Yak breeds	Maiwa yak (n = 6)	Gannan yak (n = 4)	Zhongdian yak (n = 4)
d ₄₃ (μm)¹	4.34 ± 0.04^a	4.16 ± 0.03^a	4.10 ± 0.03^b
d ₃₂ (μm)²	3.04 ± 0.06^a	2.84 ± 0.01^b	2.90 ± 0.01^b
Specific fat surface area (m²·mg⁻¹)	1.92 ± 0.03^a	2.05 ± 0.01^b	2.01 ± 0.01^b
Total protein in MFGM (mg·g⁻¹ fat)	11.12 ± 0.12^a	12.24 ± 0.09^a	9.72 ± 0.26^b
Surface protein coverage of milk fat globule (mg·m⁻²)	5.67 ± 0.07^a	5.97 ± 0.08^a	4.81 ± 0.15^b

(where v _i is the volume of globules in a size class of average diameter, d _i).

Data are means ± sample standard deviations.

^a,b

Different superscripts within a row indicate significant differences (P ≤ 0.05).