Exogenous tannase improves feeding value of a diet containing field beans (Vicia faba) when fed to broilers.

Abstract

A total of 72 male Ross 308 broilers were used in a study to investigate the effect of dietary tannase on apparent metabolisable energy (AME), coefficients of dry matter retention (DMR) and nitrogen retention (NR) and fat digestibility (FD) of a diet containing 300 g/kg field beans (Vicia faba). Growth performance variables and gastrointestinal tract development were also measured. Two treatments were used in this study: control (C) and C + 3400 tannase units (TU) per kg feed. Diets were formulated to be nutritionally adequate with the exception that the AME was lower than recommended (12.65 vs 12.97 MJ/kg, respectively). Inclusion of tannase increased AME by 0.4 MJ/kg DM. Tannase supplementation improved dietary DMR, NR and FD by 2.8%, 3.2% and 6.5%, respectively. Birds given tannase had 4.4% reduction in feed intake and 2.6% improvement in gain to feed ratio (P < 0.05). Compared to control diet, birds given tannase had reduced relative to body weight (%BW) proventriculus and gizzard and pancreas weights, 3.29% vs 3.09% and 0.47% vs 0.44%, respectively. The mechanisms of action of the studied enzyme require further elucidation.

• Authors: J Abdulla, S P Rose, A M Mackenzie, W Mirza, V Pirgozliev
• Journal: British poultry science (Br Poult Sci) Vol. 57 Issue 2 Pg. 246-50 (Apr 2016) ISSN: 1466-1799 [Electronic] England
• PMID: 26864377 (Publication Type: Journal Article)

Chemical References

• Carboxylic Ester Hydrolases
• tannase

Topics

• Animal Feed (analysis)
• Animal Nutritional Physiological Phenomena
• Animals
• Carboxylic Ester Hydrolases (administration & dosage, metabolism)
• Chickens (growth & development, physiology)
• Diet (veterinary)
• Dietary Supplements
• Energy Metabolism (physiology)
• Male
• Nutritive Value
• Random Allocation
• Vicia faba (chemistry)
• Weight Gain (physiology)