Associations between Mammary gland echotexture and milk composition in cows
Issue Date
11-2020
Abstract
Thirty clinically healthy Holstein‐Friesian cows underwent twice daily machine milking and ultrasonographic examinations of the udder just prior to and after milking. Digital ultrasonographic images of each udder quarter were subjected to computer‐assisted echotextural analyses to obtain mean numerical pixel values (NPVs) and pixel heterogeneity (PSD) of the mammary gland parenchyma. The average milk yield and pH were higher (p < 0.05) in the morning, whereas crude fat, total solids, solids non‐fat and citric acid content were higher (p < 0.05) during the evening milking period. Mean NPVs and PSDs of the mammary gland parenchyma were greater (p < 0.05) after than before milking. There were significant correlations among echotextural characteristics of the udder and protein percentage, lactose content and freezing point depression determined in the milk samples collected in the morning and crude protein, casein, lactose and solids non‐fat in the evening. Our results can be interpreted to suggest that computerized analysis of the mammary gland ultrasonograms has the makings of a technique for estimating non‐fat milk constituents in cows. However, future validating studies are necessary before this method can be employed in commercial settings and research. Moreover, significant inter‐quarter differences in udder echogenicity may necessitate further echotextural studies of separate quarters.
Source or Periodical Title
Animals (Basel)
Volume
10
Issue
11
Page
1-12
Document Type
Article
Physical Description
illustrations; tables
Language
English
Subject
Cow, Image analysis, Milk composition, Udder, Ultrasonography
Recommended Citation
Schwarz, To., Scheeres, N., Małopolska, M.M., Murawski, M., Agustin, T.D.B., Ahmadi, B., Strzałkowska, N., Rajtar, P., Micek, P., Bartlewski, P.M. (2020). Associations between Mammary Gland Echotexture and Milk Composition in Cows. Animals. 10 (11), 1-12. 10.3390/ani10112005.
Identifier
DOI:10.3390/ani10112005
Digital Copy
yes
En – AGROVOC descriptors
COW; IMAGE ANALYSIS; MILK COMPOSITION, UDDER; ULTRASONOGRAPHY