Effects of housing systems and feed additive on growth, carcass traits, liver function, oxidative status, thyroid function, and immune parameters of broilers.

Autor: Abo El-Maaty H; Poultry Production Department, Faculty of Agriculture, Mansoura University, Mansoura, Egypt., Sherif S; Poultry Production Department, Faculty of Agriculture, Mansoura University, Mansoura, Egypt., Taha AE; Department of Animal Husbandry and Animal Wealth Development, Faculty of Veterinary Medicine, Alexandria University, 22758 Edfina, Egypt. Electronic address: Ayman.Taha@alexu.edu.eg., Al-Otaibi AM; Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, Riyadh 13225, Saudi Arabia., Othman SI; Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, Riyadh 11671, Saudi Arabia., Allam AA; Department of Zoology, Faculty of Science, Beni-suef University, Beni-suef 65211, Egypt., Mahrose K; Animal and Poultry Production Department, Faculty of Technology and Development, Zagazig University, Zagazig 44511, Egypt.
Jazyk: angličtina
Zdroj: Poultry science [Poult Sci] 2023 Dec; Vol. 102 (12), pp. 103121. Date of Electronic Publication: 2023 Sep 16.
DOI: 10.1016/j.psj.2023.103121
Abstrakt: The effects of rearing Cobb500 broiler chickens under 3 different housing systems (floor litter, floor plastic, and batteries) without or with feed additive (Butinov) on broiler performance, blood parameters and carcass traits were evaluated. Three hundred 1-day-old chicks were distributed in a 3 × 2 factorial arrangement (6 treatments each of 5 replicates). The results showed that reared broilers on litter or plastic floors had high values (P ≤ 0.01) of bird's weight (BW), weight gain (WG), and feed intake (FI) throughout the entire study period (1-42 d of age) compared with rearing on batteries. Rearing broilers in the different housing systems and with or without feed additives did not affect (P ≥ 0.05) total feed conversion (FCR). Different rearing systems or feed additives did not influence broiler chicks' carcass traits and some serum blood parameters. The plastic floor system significantly increased (P ≤ 0.05) blood serum corticosterone compared with litter and batteries. Feed additive (Butinov) decreased the level of T 4 (P ≤ 0.05) in blood serum. Plastic floors or batteries significantly increased (P ≤ 0.01) the level of antibody titer against avian influenza virus (HIAV) compared to chicken reared on a litter floor. The results suggested that using housing systems of litter or plastic floors could improve broiler growth performance without adversely affecting carcass traits and blood characteristics compared with rearing in batteries. Also, broiler diets' feed additive (Butinov) and their interaction with rearing systems did not improve broiler growth performance.
(Copyright © 2023 The Authors. Published by Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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