Oxidative stability of milk and expression of oxidative stress response, lipogenic-related, and IGF-1 genes in early-lactation cows supplemented with peanut and sunflower oils

Autor: Marcelo de Oliveira Alves Rufino, Márcia Saladini Vieira Salles, João Alberto Negrão, Antonio Leandro Chaves Gurgel, João Luiz Pratti Daniel, Luciano Soares de Lima, Francilaine Eloise de Marchi, Luiz Carlos Roma Júnior, Geraldo Tadeu dos Santos
Rok vydání: 2023
Předmět:
Zdroj: Animal Production Science. 63:535-543
ISSN: 1836-5787
1836-0939
DOI: 10.1071/an22273
Popis: Context Feeding dairy cows with plant oils rich in unsaturated fatty acids is a recommended strategy for increasing the proportion of polyunsaturated fatty acids in milk for human consumption. Aims We evaluated the effects of supplementation with peanut oil (high oleic acid content) and sunflower oil (high linoleic acid content) on the fatty acid profile and oxidative stability of milk and the expression of oxidative stress response, lipogenic-related and insulin-like growth factor 1 (IGF-1) genes in pasture-fed Jersey cows in early lactation. Methods Twenty-four cows were distributed in a randomised block design. Treatments were four dietary supplements of concentrate alone, or concentrate plus oil (59.6 g/kg dry matter): peanut oil, sunflower oil, or a 1:1 (v/v) mixture of peanut and sunflower oils. Analyses were performed at 30 and 60 days in milk. Key results Both peanut oil and mixed oil diets increased the hypocholesterolemic/hypercholesterolemic ratio (P
Databáze: OpenAIRE
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