Combination of pelleting and monensin does not affect antioxidant properties and fatty acids in milk of grazing dairy cows supplemented with a concentrate containing soybean seeds

This study was performed with the main objective of evaluating the effect of the combination of pelleting and monensin on fatty acids (FA) composition, the concentration of total polyphenols and flavonoids, and the oxidative stability of milk in cows fed a concentrate containing soybean seeds. Eight...

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Bibliographic Details
Published in:Tropical animal health and production 2020-03, Vol.52 (2), p.573-581
Main Authors: Costa, Luiza Pozzi Marins, De Lima, Luciano Soares, Damasceno, Júlio Cesar, De Marchi, Francilaine Eloise, Granzotto, Fernanda, dos Santos, Fabio Seiji, Santos, Alexandre Leseur Dos, dos Santos, Geraldo Tadeu
Format: Article
Language:English
Subjects:
Animal Feed - analysis
Animals
Antioxidants
Antioxidants - chemistry
Antioxidants - metabolism
Biomedical and Life Sciences
Cattle
Cattle - physiology
Cow's milk
Dairy cattle
Dienes
Diet - veterinary
Dietary Supplements
Dry matter
Fatty acids
Fatty Acids - chemistry
Fatty Acids - metabolism
Female
Flavonoids
Food Handling
Glycine max
Grazing
Lactation
Lactose
Lactose - metabolism
Life Sciences
Milk
Milk - chemistry
Milk production
Milk Proteins - analysis
Monensin
Monensin - pharmacology
Pelleting
Polyphenols
Regular Articles
Seeds
Seeds - chemistry
Soybeans
Stability
Veterinary Medicine/Veterinary Science
Zoology
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Summary:This study was performed with the main objective of evaluating the effect of the combination of pelleting and monensin on fatty acids (FA) composition, the concentration of total polyphenols and flavonoids, and the oxidative stability of milk in cows fed a concentrate containing soybean seeds. Eight Holstein multiparous cows were distributed in a replicated Latin square design. The four supplement treatments consisted of the combination of two factors (pelleting and monensin) and one concentrate as follows: (1) unpelleted concentrate with no monensin (CO); (2) pelleted concentrate with no monensin (PE); (3) unpelleted concentrate with 96 mg of monensin/kg of dry matter, DM (MO); and (4) pelleted concentrate with 96 mg of monensin/kg of DM (PM). There was no interaction between pelleting and monensin for milk production and concentration of milk protein, lactose, total polyphenols, flavonoids, conjugated dienes (CD), and reducing power. Fat and total solids concentration in milk were decreased when cows were fed pelleted (PE and PM) concentrates. Feeding cows with PE and PM concentrates increased the CD concentration in milk. Regarding milk FA concentration, there was no difference among treatments for total saturated, monounsaturated, and polyunsaturated FA. The most prominent result was that pelleting increased the milk concentration of omega-3 FA. Altogether, the present study suggests that the pelleting process can improve the milk fat quality by increasing the omega-3 FA, while the combination of pelleting and monensin in the diet of grazing dairy cows fed soybean-based concentrate adds no further improvements to FA profiles and oxidative stability of milk.
ISSN:0049-4747
1573-7438
DOI:10.1007/s11250-019-02044-4