IGF-1 concentration patterns and their relationship with follicle development after weaning in young sows fed different pre-mating diets

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Han , T , Björkman , S , Soede , N , Oliviero , C & Peltoniemi , O 2020 , ' IGF-1 concentration patterns and their relationship with follicle development after weaning in young sows fed different pre-mating diets ' , Animal , vol. 14 , no. 7 , 1751731120000063 , pp. 1493-1501 . https://doi.org/10.1017/S1751731120000063

Title: IGF-1 concentration patterns and their relationship with follicle development after weaning in young sows fed different pre-mating diets
Author: Han, Taehee; Björkman, Stefan; Soede, Nicoline; Oliviero, Claudio; Peltoniemi, Olli
Contributor: University of Helsinki, Production Animal Medicine
University of Helsinki, Helsinki One Health (HOH)
University of Helsinki, Helsinki One Health (HOH)
University of Helsinki, Animal Reproduction Science
Date: 2020-07
Language: eng
Number of pages: 9
Belongs to series: Animal
ISSN: 1751-7311
URI: http://hdl.handle.net/10138/318004
Abstract: Piglet birth weight and within-litter birth weight variation are important for piglet survival and growth. Pre-mating diets may improve IGF-1 and follicle development during the weaning-to-oestrus interval (WEI) and subsequent piglet birth weight. The objective of this study was to modulate IGF-1 concentration during late lactation and the WEI of young sows by using specific pre-mating diets supplemented with microfibrillated cellulose (MF),l-carnitine (LC) orl-arginine (AR). A further objective was to investigate the relationship between IGF-1 and subsequent follicle development and oestrus and ovulation characteristics. In total, 56 first-parity and 20 second-parity sows in three consecutive batches were used for this experiment. Sows received daily either wheat (CON) or wheat plus MF, LC or AR at one of two supplementation levels (low and high) during last week of lactation and WEI. From weaning onwards, follicle and corpus luteum (CL) diameters were repeatedly measured with ultrasound. Blood samples were collected during the WEI for IGF-1 and on day 21 of pregnancy for progesterone analyses, respectively. Insulin-like growth factor-1 concentration, follicle diameter, oestrus and ovulation characteristics and CL diameter were not affected by pre-mating diets. Low IGF-1 class (= 8%,N= 28) had lower IGF-1 concentrations at weaning (167v. 214 ng/ml,P<0.05) compared to low LM loss sows (
Subject: ARGININE SUPPLEMENTATION
EMBRYO SURVIVAL
ESTRUS INTERVAL
GROWTH-FACTOR-I
IGF
L-CARNITINE SUPPLEMENTATION
MULTIPAROUS SOWS
NUTRITIONALLY INDUCED RELATIONSHIPS
PRIMIPAROUS LACTATING SOWS
REPRODUCTIVE CHARACTERISTICS
TO-OVULATION INTERVAL
follicular development
metabolic state
sow body condition
sow reproduction
412 Animal science, dairy science
413 Veterinary science
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