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Updated: Jun 25, 2026

Milk Collection in the Rat Using Capillary Tubes and Estimation of Milk Fat Content by Creamatocrit
Published on: December 16, 2015
Comparative analysis of goat milk flavor during different lactation and its interactions with fatty acids and
Zhezhe Yu1, Wangqi Jia1, Zhuyu Zhou1
1College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China; Shaanxi Engineering Research Centre of Dairy Products Quality, Safety and Health, Yangling, Shaanxi, China.
Abstract:
Goat milk were collected at 4-5 d (GM1), 11-12 d (GM2), 26-27 d (GM3), 59-60 d (GM4), and 118-119 d postpartum (GM5). GM1 exhibited the highest contents of fat (8.99%), protein (9.22%), casein (6.58%), solids-not-fat (12.63%), and total solids (22.01%), but the lowest lactose (2.65%). It also displayed a more pronounced yellow color, larger and more numerous fat globules, and the highest goaty flavor score. Electronic nose and electronic tongue analysis confirmed distinct flavor profiles among stages. And ethyl butyrate and ethyl hexanoate were detected exclusively in goat milk samples. Furthermore, goat milk contained higher levels of free short- and medium-chain fatty acids (C4:0, C6:0, C8:0, C10:0, C12:0) and C18:1. Notably, goaty flavor score was strongly positively correlated with fat content and free fatty acids C6:0, C8:0, and C12:0 (P < 0.01). These results may provide a preliminary insight for future studies targeting the selection and flavor modulation of goat milk.
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