Days in milk alters the milk fatty acid profile of grazing donkeys: A preliminary study
| Autor: | Chiara Albano de Araujo Oliveira, Ronaldo Lopes Oliveira, Paulo Vitor França Lemos, Aline Rocha Silva, Carolina Oliveira de Souza, Madian Johel Galo Salgado, Cláudio Vaz Di Mambro Ribeiro |
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| Rok vydání: | 2020 |
| Předmět: |
040301 veterinary sciences
Linolenic acid Biology Milking 0403 veterinary science chemistry.chemical_compound fluids and secretions Animal science Food Animals Lactation Grazing medicine Animals chemistry.chemical_classification Fatty Acids 0402 animal and dairy science food and beverages Fatty acid 04 agricultural and veterinary sciences Equidae 040201 dairy & animal science Animal Feed Diet Oleic acid medicine.anatomical_structure Milk chemistry Animal Science and Zoology Composition (visual arts) Female Polyunsaturated fatty acid |
| Zdroj: | Journal of animal physiology and animal nutritionREFERENCES. 105(6) |
| ISSN: | 1439-0396 |
| Popis: | The aim of this study was to characterize and determine how days in milk (DIM) affect the milk fatty acid (FA) profile of grazing donkeys. Donkey milk is very similar to human milk, containing bioactive molecules such as FA and proteins. However, there is a lack of scientific and technical information on the changes in the FA profile of asinine milk in pasture-feeding systems. Seven multiparous Pega donkeys, maintained in an exclusively extensive system, were used. Milking was undertaken twice a day, once a week for 16 weeks. Milk samples were composed according to the average lactating days as follows: 55, 110, 165, 220 and 275 DIM. A descriptive analysis of the milk fat composition was performed, and the linear and quadratic effects of DIM on the milk FA profile were tested. The milk FA profile of grazing donkeys is influenced by lactation days and is characterized by high concentrations of polyunsaturated FA (PUFA) with a low n-6 to n-3 ratio (0.66 g/100 g), mainly due to the high level of linolenic acid (16.8 g/100 g). Most of the individual FAs did not change during lactation, but stearic and oleic acid linearly decreased (p |
| Databáze: | OpenAIRE |
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