Fatty acid profiles in Chinese Maiwa yak milk across the lactation cycle

An experiment was conducted to determine fatty acid (FA) pro?les in Chinese Maiwa yak milk across the lactation cycle. Sixty-one healthy, similar weight, 4-7 years old, 3-6 parity yaks with unrelated background were selected randomly from Hongyuan County, Sichuan province, southwest of China (with altitude over 3500 m). The graze on natural pasture all year around without irrigation, fertilizer, or other changes pasture. samples for each animal collected separately at 1, 2, 3, 4, 5, 6, 7, 15, 30, 60, 120 and 180 days postpartum composition analysis. most abundant FA species C16:0, C18:1c9, C18:0 C14:0, which varied significantly periods. C10:0, C12:0, C14:0 C16:0 positively correlated other, negatively C18:0. C18:2t9c11 saturated (SFA). C18:1t11, iso-C15:0, C22:0 C16:1c7 located central positions correlation network. C18:1t11 showed close C18 unsaturated (UFA) (C18:1t13 C18:3n3), C19:0, anteiso-C17:0. Besides iso-C15:0 associated C15:0, anteiso-C15:0, C20:0, iso-C14:0, 9,10-hexyl-C17:0, respectively. closely C13:0, C17 (C17:0 9, 10-hexyl-C17:0), C16:1c9, C20:5n3 C20:4n6. In conclusion, these data will be informative study regulatory mechanism formation yaks.   Key words: Correlations, profile, periods, Qinghai-Tibetan plateau, yak. &nbsp