PMID- 34072555
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20210627
IS  - 2076-2615 (Print)
IS  - 2076-2615 (Electronic)
IS  - 2076-2615 (Linking)
VI  - 11
IP  - 6
DP  - 2021 May 29
TI  - Feeding System Resizes the Effects of DGAT1 Polymorphism on Milk Traits and Fatty 
      Acids Composition in Modicana Cows.
LID - 10.3390/ani11061616 [doi]
LID - 1616
AB  - 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 x 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.
FAU - Tumino, Serena
AU  - Tumino S
AUID- ORCID: 0000-0002-8221-2490
AD  - Department of Agriculture, Food and Environment, University of Catania, Via 
      Valdisavoia 5, 95123 Catania, Italy.
FAU - Criscione, Andrea
AU  - Criscione A
AD  - Department of Agriculture, Food and Environment, University of Catania, Via 
      Valdisavoia 5, 95123 Catania, Italy.
FAU - Moltisanti, Valentina
AU  - Moltisanti V
AD  - Department of Agriculture, Food and Environment, University of Catania, Via 
      Valdisavoia 5, 95123 Catania, Italy.
FAU - Marletta, Donata
AU  - Marletta D
AUID- ORCID: 0000-0002-8408-7443
AD  - Department of Agriculture, Food and Environment, University of Catania, Via 
      Valdisavoia 5, 95123 Catania, Italy.
FAU - Bordonaro, Salvatore
AU  - Bordonaro S
AUID- ORCID: 0000-0002-8723-9457
AD  - Department of Agriculture, Food and Environment, University of Catania, Via 
      Valdisavoia 5, 95123 Catania, Italy.
FAU - Avondo, Marcella
AU  - Avondo M
AD  - Department of Agriculture, Food and Environment, University of Catania, Via 
      Valdisavoia 5, 95123 Catania, Italy.
FAU - Valenti, Bernardo
AU  - Valenti B
AUID- ORCID: 0000-0002-5737-9862
AD  - Department of Agricultural, Food and Environmental Science, University of 
      Perugia, Borgo XX Giugno 74, 06121 Perugia, Italy.
LA  - eng
PT  - Journal Article
DEP - 20210529
PL  - Switzerland
TA  - Animals (Basel)
JT  - Animals : an open access journal from MDPI
JID - 101635614
PMC - PMC8227090
OTO - NOTNLM
OT  - DGAT1 K232A polymorphism
OT  - Modicana cows
OT  - milk fatty acids
OT  - milk traits
OT  - pasture feeding
COIS- The authors declare no conflict of interest.
EDAT- 2021/06/03 06:00
MHDA- 2021/06/03 06:01
PMCR- 2021/05/29
CRDT- 2021/06/02 01:35
PHST- 2021/05/12 00:00 [received]
PHST- 2021/05/24 00:00 [revised]
PHST- 2021/05/27 00:00 [accepted]
PHST- 2021/06/02 01:35 [entrez]
PHST- 2021/06/03 06:00 [pubmed]
PHST- 2021/06/03 06:01 [medline]
PHST- 2021/05/29 00:00 [pmc-release]
AID - ani11061616 [pii]
AID - animals-11-01616 [pii]
AID - 10.3390/ani11061616 [doi]
PST - epublish
SO  - Animals (Basel). 2021 May 29;11(6):1616. doi: 10.3390/ani11061616.