Impacts of synthetic androgen and estrogenic antagonist administration on growth performance, sex steroids hormones, and immune markers of male and female broilers.

Autor:	Younis MEM; Department of Animal Husbandry and Animal Wealth Development, Faculty of Veterinary Medicine, Damanhour University, Damanhour 22511, Egypt., Jaber FA; University of Jeddah, College of Science, Department of Biology, Jeddah 21589, Saudi Arabia., Majrashi KA; Biological Sciences Department, College of Science & Arts, King Abdulaziz University, Rabigh 21911, Saudi Arabia., Ghoneim HA; Department of Physiology, Faculty of Veterinary Medicine, Damanhour University, Damanhour 22511, Egypt; Department of Biological Sciences, Zoology, King Abdulaziz University, Jeddah 21589, Saudi Arabia., Shukry M; Department of Physiology, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafrelsheikh 33516; Poultry Department, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt., Shafi ME; Department of Biological Sciences, Zoology, King Abdulaziz University, Jeddah 21589, Saudi Arabia., Albaqami NM; Department of Biological Sciences, Zoology, King Abdulaziz University, Jeddah 21589, Saudi Arabia., Abd El-Hack ME; Department of Physiology, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafrelsheikh 33516; Poultry Department, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt. Electronic address: m.ezzat@zu.edu.eg., Abo Ghanima MM; Department of Animal Husbandry and Animal Wealth Development, Faculty of Veterinary Medicine, Damanhour University, Damanhour 22511, Egypt.
Jazyk:	angličtina
Zdroj:	Poultry science [Poult Sci] 2023 Jan; Vol. 102 (1), pp. 102244. Date of Electronic Publication: 2022 Oct 13.
DOI:	10.1016/j.psj.2022.102244
Abstrakt:	The influence of synthetic androgen and estrogenic antagonists (Tamoxifen) on body characteristics and immune response of male and female broilers and the correlation between sex hormone levels were estimated in our experiment. One day old chicks were sexed, and chicks of each sex were randomly distributed on three experimental treatments; the first treatment group (TAM20) chicks were supplied with estrogenic antagonist tamoxifen citrate 20 mg/kg body weight through oral administration for four times every other day from third until ninth d; Androgen treatment chicks were injected intramuscular with veterinary androgen AD GAN@ (Boldenone Undecylenate 50 mg) 1 cm/10 kg body weight at fifth and ninth day, and the third treatment was control. Androgen treatment reported the highest feed intake with the lowest for TAM20 treatment. Concerning carcass characteristics, early androgen injection increased breast percentage significantly compared to TAM20 treatment. Androgen supplementation increased significantly comb the percentage. However, TAM20 decreased it particularly compared to control. Moreover, the percentage of comb and shanks was substantially higher for males than females. Concerning the effects of both treatments on sex hormones, androgen showed favorable effects on testosterone and estrogen compared to Tamoxifen 20 treatment. On the other hand, the administration of TAM 20 improves phagocytic activity compared to androgen administration. (Copyright © 2022 The Authors. Published by Elsevier Inc. All rights reserved.)
Databáze:	MEDLINE
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