2019
DOI: 10.1590/1806-9061-2018-0931
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Effect of Photoperiod on the Egg Production, Plasma Luteinizing Hormone, Follicle-Stimulating Hormone, Gonadal Hormones, and Mrna Levels of Lh and Fsh in the Hypothalamic-Pituitary-Gonadal Axis of Pigeons

Abstract: We investigated the egg production, changes in luteinizing hormone (LH), follicle-stimulating hormone (FSH), gonadal hormones, and their mRNA levels in the hypothalamic-pituitary-gonadal axis of White King pigeons submitted to different photoperiods. The treatments consisted of three photoperiods (8 h light (L):16 h dark (D), 12L:12D, and 16L:8D), with three replicates of twelve pairs of adult pigeons. The birds were exposed the photoperiods for 45 days. Egg production performance was recorded daily. Six pigeo… Show more

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Cited by 2 publications
(2 citation statements)
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“…The pituitary gland secretes two important hormones, FSH and LH, which play a crucial role in the hypothalamic–pituitary-gonadal (HPG) axis ( 48–51 ). FSH, a glycoprotein hormone secreted by the anterior pituitary acidophilic cells, regulates a series of physiological processes including development, growth, puberty, and reproduction-related functions ( 52–54 ).…”
Section: Discussionmentioning
confidence: 99%
“…The pituitary gland secretes two important hormones, FSH and LH, which play a crucial role in the hypothalamic–pituitary-gonadal (HPG) axis ( 48–51 ). FSH, a glycoprotein hormone secreted by the anterior pituitary acidophilic cells, regulates a series of physiological processes including development, growth, puberty, and reproduction-related functions ( 52–54 ).…”
Section: Discussionmentioning
confidence: 99%
“…These results are consistent with those indicated by Hassan (10) if illumination for 17 hours in poultry led to an increase in lymphocytes, heterophiles, white cell, red cell, PCV and stress index. This increase can be participated to the improvement in the ecosystem and the oxidative state of the bird, as it was proven that the photoperiod affects the microorganisms present in the bird's intestines (12) and that the gut microbiota affects the functions of the organs and the immune system of birds (27). The illuminating system affects the chickens' assimilation, which in turn is accountable for maximizing maturation performance and maintaining ordinary physiological processes and functions (7).…”
Section: Statistical Analysis a One-way Analysis Of Variance Has Been...mentioning
confidence: 99%