Effects of dietary supplementation with algae, sunflower oil or soybean oil on folliculogenesis in the rabbit ovary during sexual maturation

Małgorzata Grzesiak , Dorota Maj , Anna Hrabia

Abstract

This study aimed to examine the effects of algae (rich in omega-3 fatty acids), sunflower oil (rich in omega-6 fatty acids) and soybean oil (rich in omega-6 fatty acids) on the entire folliculogenesis in juvenile and sexually mature rabbits. After weaning, rabbits were randomly divided into four experimental groups of 14 animals each. Control animals received non-supplemented pellets, while in the other groups, the pellets contained 1% marine algae, 3% sunflower oil or 3% soybean oil. Animals from each group were slaughtered at 12 weeks of age (n = 7 per group) or at 18 weeks of age (n = 7 per group). The ovaries were harvested and fixed for hematoxylin-eosin staining, immunohistochemical localization of PCNA and TUNEL assay. Algae-enriched diet markedly decreased the number of primordial and primary follicles, while addition of sunflower oil reduced the number of primary follicles in 12-week-old rabbits. The number of antral follicles was higher following algae supplementation, but lower after addition of soybean oil in that age group. Proliferating index was decreased following supplementation with algae and soybean oil in juvenile rabbits, whereas it was increased after addition of algae and decreased following vegetable oils in mature ones. Dietary PUFAs did not impact apoptosis in the rabbit ovary of both age groups. The obtained results suggest that PUFA-enriched diet regulate either early folliculogenesis or antral follicle development in rabbits that might influence reproductive performance as a consequence. It appears that observed effects are attributed to sexual maturity.
Author Małgorzata Grzesiak - Jagiellonian University (UJ)
Małgorzata Grzesiak,,
-
, Dorota Maj (FoAS / Department of Genetics, Animal Breeding and Ethology)
Dorota Maj,,
- Department of Genetics, Animal Breeding and Ethology
, Anna Hrabia (FoAS / Department of Animal Physiology and Endocrinology)
Anna Hrabia,,
- Department of Animal Physiology and Endocrinology
Journal seriesActa Histochemica, ISSN 0065-1281, e-ISSN 1618-0372, (N/A 70 pkt)
Issue year2020
Vol122
No6
Pages1-9
Publication size in sheets0.5
Article number151581
Keywords in EnglishPUFAs, Folliculogenesis, Proliferation, Apoptosis, Ovary, Rabbit
ASJC Classification2700 General Medicine; 2722 Histology; 1307 Cell Biology
DOIDOI:10.1016/j.acthis.2020.151581
URL https://www.sciencedirect.com/science/article/pii/S0065128120300805/pdfft?md5=11dfcbb6d8252e91d8eba27d5eb0641a&pid=1-s2.0-S0065128120300805-main.pdf
Languageen angielski
Score (nominal)70
Score sourcejournalList
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2018 = 0.668; WoS Impact Factor: 2018 = 1.719 (2) - 2018=1.594 (5)
Citation count*
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FinansowanieThis work was financially supported by the Ministry of Sciences and Higher Education for University of Agriculture in Krakow, Poland (subvention number: Sub-020,002-D015 and Sub-020,012-D015) and for Jagiellonian University in Krakow, Poland (subvention number:N18/DBS/000,006).
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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