Rabbits: Nutrition, Reproduction, Health
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Abstract
Abstract
This study evaluated the effects of dietary n-3 polyunsaturated fatty acids (n-3 PUFA) supplementation on endocrine and metabolic profiles of forty-five nulliparous rabbit does during their first reproductive cycle. Animals were randomly assigned to one of three diets: control (CNT), 5% extruded linseed (L), and 5% extruded linseed plus 0.2% Padina pavonica extract (LPP). Blood was sampled at baseline, artificial insemination, parturition, mid-lactation, and weaning, to determine the concentrations of cortisol, insulin, leptin, thyroid hormones (T3, T4), glucose, and non-esterified fatty acids (NEFA). Reproductive stage significantly influenced endocrine and metabolic dynamics, with cortisol and NEFA peaking at parturition (p < 0.001). Supplemented groups, particularly LPP, showed higher T3 concentrations (p < 0.05) and T3/T4 ratios (p < 0.01). The L diet maintained higher insulin during lactation (p < 0.05), while LPP lowered leptin at parturition (p < 0.01) and NEFA at insemination (p < 0.01), indicating an early decrease in lipid mobilization. Multivariate analysis suggested that n-3 PUFA supplementation promoted an endocrine profile characterized by enhanced thyroid activity and reduced lipid mobilization, consistent with a potentially favorable metabolic shift. In conclusion, enriching diets with n-3 PUFA, especially linseed combined with Padina pavonica extract, represents a promising nutritional strategy to support rabbit does during the highly demanding phases of their first reproductive cycle.
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@article{Quattrone2026Hormonal,
title = {Hormonal and metabolic adaptations in Omega-3-supplemented rabbit does during their first reproductive cycle},
author = {Alda Quattrone and Nour Elhouda Fehri and Olimpia Barbato and Giovanni Ricci and D. Vigo and Luigj Turmalaj and Majlind Sulçe and Marta Castrica and Maria Laura Marongiu and Alessandro Dal Bosco and Bayrem Jemmali and Gerald Muça and Gabriele Brecchia and Giulio Curone and Laura Menchetti},
journal = {Veterinary Quarterly},
year = {2026},
doi = {10.1080/01652176.2026.2749322},
url = {https://doi.org/10.1080/01652176.2026.2749322}
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