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Type: Journal article
Title: Undernutrition during early follicle development has irreversible effects on ovulation rate and embryos
Author: Chen, T.
Stott, P.
Athorn, R.
Bouwman, E.
Langendijk, P.
Citation: Reproduction Fertility and Development, 2012; 24(6):886-892
Publisher: C S I R O Publishing
Issue Date: 2012
ISSN: 1031-3613
Statement of
T.Y. Chen, P.Stott, R.Z. Athorn, E. G. Bouwman and P. Langendijk
Abstract: This study assessed carry-over effects of energy level during the early antral phase and subsequent follicular phase on follicle recruitment and ovulation rate. Gilts (n = 45) were fed a standard diet to a low (L, ~1.2 kg day–1) or high (H, ~2.7 kg day–1) level during the early antral (luteal) phase, and subsequently fed a H or L feed level during the follicular phase, resulting in four treatment groups (HH, HL, LH and LL). Follicle size at the end of the luteal phase was greater for gilts fed a high feed level previously (3.3 vs 3.0 mm; P < 0.05). During the follicular phase, high feeding increased follicle size at Day 5 (6.9 vs 6.2 mm; P < 0.005) and plasma oestradiol concentration (P < 0.05). Nevertheless, a low feed level during the luteal phase reduced ovulation rate (14.4 vs 13.2; P < 0.05) and embryo number (12.6 vs 10.5; P < 0.05), and this was not counteracted by feed level during the follicular phase. Plasma progesterone concentration after ovulation was lower for LL gilts than for other treatments (P < 0.05). These results indicate that undernutrition during early antral follicle development may have a residual effect on follicle recruitment and quality.
Keywords: feed level; oestradiol; progesterone
RMID: 0020120697
DOI: 10.1071/RD11292
Appears in Collections:Agriculture, Food and Wine publications

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