Peer-Reviewed Journal Details
Mandatory Fields
English, AM;Byrne, CJ;Cormican, P;Waters, SM;Fair, S;Kenny, DA
2018
November
Scientific Reports
Effect of Early Calf-Hood Nutrition on the Transcriptional Regulation of the Hypothalamic-Pituitary-Testicular axis in Holstein-Friesian Bull Calves
Published
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Optional Fields
SERUM METABOLIC HORMONES GENE-EXPRESSION SCAVENGER RECEPTOR ARCUATE NUCLEUS TESTOSTERONE CONCENTRATIONS ACCELERATED PUBERTY SEXUAL-MATURATION PROTEIN STAR GERM-CELL HEIFERS
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The aim of this study was to investigate the effect of early calf-hood nutrition on the transcriptomic profile of the arcuate nucleus of the hypothalamus, anterior pituitary and testes in Holstein-Friesian bulls. Holstein-Friesian bull calves with a mean (+/- S.D.) age and bodyweight of 19 (+/- 8.2) days and 47.5 (+/- 5.3) kg, respectively, were offered a high (n = 10) or low (n = 10) plane of nutrition in order to achieve an overall growth rate of 1.2 and 0.5 kg/day. At 126 (+/- 3) days of age, calves were euthanized, hypothalamus (arcuate region), anterior pituitary and testicular parenchyma samples were harvested and RNAseq analysis was performed. There were 0, 49 and 1,346 genes differentially expressed in the arcuate nucleus, anterior pituitary and testicular tissue of bull calves on the low relative to the high plane of nutrition, respectively (P < 0.05; False Discovery Rate < 0.05). Cell cycle processes in the anterior pituitary were down regulated in the low relative to the high plane of nutrition; there was no differential expression of genes related to reproductive processes. Gene expression involved in cholesterol and androgen biosynthesis in the testes were down regulated in animals on the low plane of nutrition. This study provides insight into the effect of early life plane of nutrition on the regulation of the HPT axis.
LONDON
2045-2322
10.1038/s41598-018-34611-4
Grant Details