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Growth performance and immune response of two commercial broiler strains fed diets containing Lactobacillus cultures and oxytetracycline under heat stress conditions


Citation

Idrus, Zulkifli and Abdullah, Norhani and N., Mohd Azrin and Ho, Yin Wan (2000) Growth performance and immune response of two commercial broiler strains fed diets containing Lactobacillus cultures and oxytetracycline under heat stress conditions. British Poultry Science, 41 (5). pp. 593-597. ISSN 0007-1668; ESSN: 1466-1799

Abstract

1. Hubbard × Hubbard (HH) and Shaver × Shaver (SS) chicks given a dietary supplement of either 50 mg/kg oxytetracycline (OTC) or 1 g/kg Lactobacillus culture (LC) were exposed to 36 ± 1°C for 3 h daily from day (d) 21 to 42. 2. Prior to heat treatment, body weight (d 21) and weight gain (d 1 to d 21) of OTC and LC birds were greater than those fed the control diet. Chicks given LC had the best food efficiency followed by OTC and control birds during d 1 to d 21. Body weight (d 1 and d 21) and weight gain (d 1 to d 21) were greater for HH than SS chicks. 3. After 3 weeks of heat exposure, birds receiving the LC diet had greater body weight and weight gain, higher food intake and lower food efficiency than OTC and control chicks. 4. Antibody production against Newcastle disease vaccine on d 21 was not affected by strain or diet. On d 42, while diet had negligible effect on this variable among the SS broilers, HH birds fed LC had higher antibody production than those on the control diet. 5. Neither strain nor diet had a significant effect on mortality.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Agriculture
Faculty of Biotechnology and Biomolecular Sciences
Institute of Bioscience
DOI Number: https://doi.org/10.1080/713654979
Publisher: British Poultry Science Ltd.
Keywords: Oxytetracycline; Lactobacillus culture; Chickens; Newcastle disease virus; Anti-bacterial agents; Antibodies
Depositing User: Nabilah Mustapa
Date Deposited: 26 Aug 2015 03:51
Last Modified: 26 Aug 2015 03:51
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1080/713654979
URI: http://psasir.upm.edu.my/id/eprint/39997
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