Growth performance and immune response of two commercial broiler strains fed diets containing Lactobacillus cultures and oxytetracycline under heat stress conditions
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...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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British Poultry Science Ltd.
2000
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| Online Access: | http://psasir.upm.edu.my/id/eprint/39997/ http://psasir.upm.edu.my/id/eprint/39997/1/Growth%20performance%20and%20immune%20response%20of%20two%20commercial%20broiler%20strains%20fed%20diets%20containing%20Lactobacillus%20cultures%20and%20oxytetracycline%20under%20heat%20stress%20conditions.pdf |
| _version_ | 1848849300661993472 |
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| author | Idrus, Zulkifli Abdullah, Norhani N., Mohd Azrin Ho, Yin Wan |
| author_facet | Idrus, Zulkifli Abdullah, Norhani N., Mohd Azrin Ho, Yin Wan |
| author_sort | Idrus, Zulkifli |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | 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. |
| first_indexed | 2025-11-15T09:48:12Z |
| format | Article |
| id | upm-39997 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T09:48:12Z |
| publishDate | 2000 |
| publisher | British Poultry Science Ltd. |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-399972015-08-26T03:51:19Z http://psasir.upm.edu.my/id/eprint/39997/ Growth performance and immune response of two commercial broiler strains fed diets containing Lactobacillus cultures and oxytetracycline under heat stress conditions Idrus, Zulkifli Abdullah, Norhani N., Mohd Azrin Ho, Yin Wan 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. British Poultry Science Ltd. 2000 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/39997/1/Growth%20performance%20and%20immune%20response%20of%20two%20commercial%20broiler%20strains%20fed%20diets%20containing%20Lactobacillus%20cultures%20and%20oxytetracycline%20under%20heat%20stress%20conditions.pdf 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 10.1080/713654979 |
| spellingShingle | Idrus, Zulkifli Abdullah, Norhani N., Mohd Azrin Ho, Yin Wan Growth performance and immune response of two commercial broiler strains fed diets containing Lactobacillus cultures and oxytetracycline under heat stress conditions |
| title | Growth performance and immune response of two commercial broiler strains fed diets containing Lactobacillus cultures and oxytetracycline under heat stress conditions |
| title_full | Growth performance and immune response of two commercial broiler strains fed diets containing Lactobacillus cultures and oxytetracycline under heat stress conditions |
| title_fullStr | Growth performance and immune response of two commercial broiler strains fed diets containing Lactobacillus cultures and oxytetracycline under heat stress conditions |
| title_full_unstemmed | Growth performance and immune response of two commercial broiler strains fed diets containing Lactobacillus cultures and oxytetracycline under heat stress conditions |
| title_short | Growth performance and immune response of two commercial broiler strains fed diets containing Lactobacillus cultures and oxytetracycline under heat stress conditions |
| title_sort | growth performance and immune response of two commercial broiler strains fed diets containing lactobacillus cultures and oxytetracycline under heat stress conditions |
| url | http://psasir.upm.edu.my/id/eprint/39997/ http://psasir.upm.edu.my/id/eprint/39997/ http://psasir.upm.edu.my/id/eprint/39997/1/Growth%20performance%20and%20immune%20response%20of%20two%20commercial%20broiler%20strains%20fed%20diets%20containing%20Lactobacillus%20cultures%20and%20oxytetracycline%20under%20heat%20stress%20conditions.pdf |