Follicle development, endocrine profiles and ovulation rate in adult Merino ewes: Effects of early nutrition (pre-and post-natal) and supplementation with lupin grain

Carolina Vinoles; B.L. Paganoni; K.P. Mcnatty; D.A. Heath; A.N. Thompson; Kristy Glover; John Milton; Graeme Martin

doi:10.1530/REP-13-0104

Follicle development, endocrine profiles and ovulation rate in adult Merino ewes: Effects of early nutrition (pre-and post-natal) and supplementation with lupin grain

Carolina Vinoles, B.L. Paganoni, K.P. Mcnatty, D.A. Heath, A.N. Thompson, Kristy Glover, John Milton, Graeme Martin

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

In adult ewes, we tested whether ovarian function, including the response to short-term supplementation, was affected by the nutrition of their mothers during the pre-/post-natal period. A 2×2 factorial design was used with nutrition in early life (low or high) and a 6-day supplement (with or without) as factors. All ewes received three prostaglandin (PG) injections 7 days apart, and the supplement (lupin grain) was fed for 6 days from 2 days after the second until the third PG injection.We measured reproductive and metabolic hormones, studied follicle dynamics (ultrasonography), and evaluated granulosa cellnumbers, aromatase activity and oestradiol (E2) concentrations in follicular fluid in healthy follicles at days 3 and 7 of supplementation. Ovulation rate was increased by 25% by exposure to high pre-/post-natal nutrition (1.5 vs 1.2; P

Original language	English
Pages (from-to)	101-110
Journal	Reproduction
Volume	147
Issue number	1
DOIs	https://doi.org/10.1530/REP-13-0104
Publication status	Published - 2014

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title = "Follicle development, endocrine profiles and ovulation rate in adult Merino ewes: Effects of early nutrition (pre-and post-natal) and supplementation with lupin grain",

abstract = "In adult ewes, we tested whether ovarian function, including the response to short-term supplementation, was affected by the nutrition of their mothers during the pre-/post-natal period. A 2×2 factorial design was used with nutrition in early life (low or high) and a 6-day supplement (with or without) as factors. All ewes received three prostaglandin (PG) injections 7 days apart, and the supplement (lupin grain) was fed for 6 days from 2 days after the second until the third PG injection.We measured reproductive and metabolic hormones, studied follicle dynamics (ultrasonography), and evaluated granulosa cellnumbers, aromatase activity and oestradiol (E2) concentrations in follicular fluid in healthy follicles at days 3 and 7 of supplementation. Ovulation rate was increased by 25% by exposure to high pre-/post-natal nutrition (1.5 vs 1.2; P",

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T1 - Follicle development, endocrine profiles and ovulation rate in adult Merino ewes: Effects of early nutrition (pre-and post-natal) and supplementation with lupin grain

AU - Vinoles, Carolina

AU - Paganoni, B.L.

AU - Mcnatty, K.P.

AU - Heath, D.A.

AU - Thompson, A.N.

AU - Glover, Kristy

AU - Milton, John

AU - Martin, Graeme

PY - 2014

Y1 - 2014

N2 - In adult ewes, we tested whether ovarian function, including the response to short-term supplementation, was affected by the nutrition of their mothers during the pre-/post-natal period. A 2×2 factorial design was used with nutrition in early life (low or high) and a 6-day supplement (with or without) as factors. All ewes received three prostaglandin (PG) injections 7 days apart, and the supplement (lupin grain) was fed for 6 days from 2 days after the second until the third PG injection.We measured reproductive and metabolic hormones, studied follicle dynamics (ultrasonography), and evaluated granulosa cellnumbers, aromatase activity and oestradiol (E2) concentrations in follicular fluid in healthy follicles at days 3 and 7 of supplementation. Ovulation rate was increased by 25% by exposure to high pre-/post-natal nutrition (1.5 vs 1.2; P

AB - In adult ewes, we tested whether ovarian function, including the response to short-term supplementation, was affected by the nutrition of their mothers during the pre-/post-natal period. A 2×2 factorial design was used with nutrition in early life (low or high) and a 6-day supplement (with or without) as factors. All ewes received three prostaglandin (PG) injections 7 days apart, and the supplement (lupin grain) was fed for 6 days from 2 days after the second until the third PG injection.We measured reproductive and metabolic hormones, studied follicle dynamics (ultrasonography), and evaluated granulosa cellnumbers, aromatase activity and oestradiol (E2) concentrations in follicular fluid in healthy follicles at days 3 and 7 of supplementation. Ovulation rate was increased by 25% by exposure to high pre-/post-natal nutrition (1.5 vs 1.2; P

U2 - 10.1530/REP-13-0104

DO - 10.1530/REP-13-0104

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JO - Reproduction

JF - Reproduction

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Follicle development, endocrine profiles and ovulation rate in adult Merino ewes: Effects of early nutrition (pre-and post-natal) and supplementation with lupin grain

Abstract

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