Dietary probiotics as a strategy for improving growth performance, intestinal efficacy, immunity, and antioxidant capacity of white Pekin ducks fed with different levels of CP.

Autor:	Khattab AAA; Department of Animal Production, Faculty of Agriculture, Tanta University, 31527 Tanta, Egypt., El Basuini MFM; Department of Animal Production, Faculty of Agriculture, Tanta University, 31527 Tanta, Egypt; Faculty of Desert Agriculture, King Salman International University, South Sinai, Egypt. Electronic address: mohamed.elbasuni@agr.tanta.edu.eg., El-Ratel IT; Department of Poultry Production, Faculty of Agriculture, Damietta University, 34517 Damietta, Egypt., Fouda SF; Department of Poultry Production, Faculty of Agriculture, Mansoura University, 35516 Mansoura, Egypt.
Jazyk:	angličtina
Zdroj:	Poultry science [Poult Sci] 2021 Mar; Vol. 100 (3), pp. 100898. Date of Electronic Publication: 2020 Dec 09.
DOI:	10.1016/j.psj.2020.11.067
Abstrakt:	The potential impacts of probiotics on the performance and health status of white Pekin ducks fed with optimal or suboptimal dietary CP were evaluated during the growing period. A total of 180 male white Pekin ducks (14-day-old ducks with an initial weight of 415.65 ± 2.20 g) were randomly divided into 4 experimental groups (45 in each group of 5 replicates) in a 2 × 2 factorial design. The main factors included 2 dietary CP levels (18 or 14%) and dietary probiotic addition (with or without probiotics). The probiotic source was supplemented at 0.2 g per kilogram of diet from a blend of Lactobacillus acidophilus and Lactobacillus casei. The results showed that the diet containing 18% CP and probiotics significantly increases the final and total weight gain. Activities of intestinal enzymes (amylase, lipase, and protease), morphometrics (villus length, goblet cell count, and cryptal depth), and carcass percentage were also increased significantly. Total protein content, lysozyme activity, bactericidal activity, nitro blue tetrazolium levels, alternative complement pathway, superoxide dismutase activity, and catalase activity were significantly increased, whereas glucose, cortisol, and total cholesterol levels were decreased when treated with diet containing 18% CP and probiotics. Conversely, the group treated with diet containing 14% CP without probiotics showed the poorest performance, carcass properties, immune response, and antioxidant potential. In conclusion, probiotic addition to the 14% CP diet improved the performance of white Pekin ducks caused by reduced CP diet to performance due to the 18% CP diet without probiotic supplementation. (Copyright © 2020 The Authors. Published by Elsevier Inc. All rights reserved.)
Databáze:	MEDLINE
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