Prenatal Maternal and Possible Transgenerational Epigenetic Effects on Milk Production
作者： Boyd Gudex , David Johnson , Kuljeet Singh
DOI: 10.1371/JOURNAL.PONE.0098928
关键词: Breed 、 Milking 、 Animal science 、 Maternal effect 、 Daughter 、 Lactation 、 Herd 、 Animal husbandry 、 Biology 、 Dairy cattle 、 General Biochemistry, Genetics and Molecular Biology 、 General Agricultural and Biological Sciences 、 General Medicine
摘要: This study investigated whether the prenatal maternal environment in dairy cattle influences postnatal milking performance of resulting daughters and grand-daughters. Linear mixed models were used to analyse whole season milk production from ∼46000 Jersey ∼123000 Holstein Friesian cows their 1st 2nd lactations. Variation was associated with a small but significant (P<0.05) proportion total phenotypic variation (0.010 0.015) all traits first lactation volume (0.011) protein (0.011), second fat (0.015) breed. indicates that does influence adult subsequent daughter. Associations between daughter dam grand-dam indicative also estimated. A one litre increase dam’s herd test 7.5 daughters’ yield 1% either dams’ or percentage reduction (−49.6 −45.0 litres for protein, respectively). Similar results ansd observed (−34.7 −9.7 revealed can daughters, though effects are small. The similarity analyses suggests majority mediated by epigenetic mechanisms.
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