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Feeding System Resizes the Effects of DGAT1 Polymorphism on Milk Traits and Fatty Acids Composition in Modicana Cows

التفاصيل البيبلوغرافية
العنوان: Feeding System Resizes the Effects of DGAT1 Polymorphism on Milk Traits and Fatty Acids Composition in Modicana Cows
المؤلفون: Serena Tumino, Andrea Criscione, Valentina Moltisanti, Donata Marletta, Salvatore Bordonaro, Marcella Avondo, Bernardo Valenti
المصدر: Animals, Vol 11, Iss 6, p 1616 (2021)
بيانات النشر: MDPI AG, 2021.
سنة النشر: 2021
المجموعة: LCC:Veterinary medicine
LCC:Zoology
مصطلحات موضوعية: DGAT1 K232A polymorphism, Modicana cows, pasture feeding, milk traits, milk fatty acids, Veterinary medicine, SF600-1100, Zoology, QL1-991
الوصف: The interaction between genetic polymorphism and feeding system on milk traits and fatty acid composition was investigated in Modicana cows. Two DGAT1 K232A genotypes (AK and AA) and two feeding regimes, extensive system (EX) with 8 h of grazing without concentrate (EX) and semi-intensive systems (SI) with 2 h of grazing with concentrate, were investigated. DGAT1 genotype did not influence milk yield and composition. The feeding system affected milk composition: protein was significantly higher in SI and lactose in the EX system. A significant genotype × feeding system interaction was observed: the protein and casein levels of AK cows were higher in the SI compared to the EX system. Milk fatty acids profile, total saturated to total unsaturated fatty acids, n-6 to n-3 ratios, and atherogenic index were affected by the feeding system, improving the healthy properties of milk from animals reared in the extensive system. DGAT1 genotype influenced the fatty acid composition: milk from AA cows had a more favorable fatty acid composition due to lower total saturated fatty acids, saturated to unsaturated ratio, atherogenic index, and higher levels of oleic acid and total unsaturated fatty acids. Furthermore, an interaction genotype x feeding system was observed: the AK milk was richer in short-chain FAs (C4:0–C8:0) and C10:0 only in the EX but not in the SI system. Our data suggest that a high amount of green forage in the diet of Modicana cows can resize the effect of the DGAT1 genotype on milk traits and fatty acids composition.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 2076-2615
Relation: https://www.mdpi.com/2076-2615/11/6/1616; https://doaj.org/toc/2076-2615
DOI: 10.3390/ani11061616
URL الوصول: https://doaj.org/article/ac5964d364a14bbcacaa2729410fd811
رقم الأكسشن: edsdoj.5964d364a14bbcacaa2729410fd811
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:20762615
DOI:10.3390/ani11061616