Efficacy of Soya Protein Concentrates on the Performance and Immunity of Broiler Chickens
| Autor: | Murad R. Ata, H. Zakaria |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Avian A(H5N1) influenza
animal structures 040301 veterinary sciences broiler Newcastle disease Infectious bursal disease 0403 veterinary science 03 medical and health sciences Starter Animal science Immunity medicine Soy protein 030304 developmental biology 0303 health sciences lcsh:Veterinary medicine General Veterinary biology Broiler 04 agricultural and veterinary sciences Newcastle disease (ND) Brief Research Report medicine.disease biology.organism_classification Titer soybean concentrates Dietary treatment lcsh:SF600-1100 Veterinary Science performance carcass |
| Zdroj: | Frontiers in Veterinary Science Frontiers in Veterinary Science, Vol 7 (2020) |
| ISSN: | 2297-1769 |
| Popis: | This study examines the supplementation of soy protein concentrates (SPC) in the diet of straight run broiler chickens and its effect on their immunity and productive performance. Eight hundred Ross 308 mixed chicks were randomly assigned to four varied dietary treatments (200 birds each), four replicates per dietary treatment (50 chicks/replicate). The diets were a control without supplement (T0) or supplemented with T1 (7g), T2 (8g), and T3 (9g)/bird of 5% SPC, which replaced SBM in the basal starter diet at a rate of 5% (W/W). Each bird received a total of 300 g of the starter diet during the first 12 days of rearing and then was fed ad-libitum grower and finisher diets without SPC inclusion for 35 d. On day 35, 2 birds/replicate (8/treatments, 32 birds) were randomly selected and slaughtered for carcass evaluation. Results showed that 9g showed the lowest body weight (P < 0.05) compared to other SPC treatments. SPC addition did not improve performance. 8g had significant (P < 0.05) dressing %. Carcass characteristics were not affected by SPC. Newcastle disease blood titers showed significantly higher protection for 9g and 8g SPC on d 20. Avian Influenza blood titers gave the best results with (9g) at d 30, while Infectious Bursal Disease and Infectious Bronchitis blood titers were not affected by changing dietary levels with SPC. In conclusion, results indicated that supplementing soya protein concentrates to broiler chickens in the starter period has an effect on body weight and dressing %, and that it enhanced immunity against Newcastle and Avian influenza diseases. |
| Databáze: | OpenAIRE |
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