Enzyme complex containing carbohydrases and phytase improves growth performance and bone mineralization of broilers fed reduced nutrient corn-soybean-based diets
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Fecha de publicación
2009-09-01ISSN
0032-5791
Resumen
One experiment was conducted to investigate the benefits of a multi-enzyme complex, containing carbohydrases (from Penicillium funiculosum) and
phytase (bacterial 6-phytase) activities, on the performance and bone mineralization of broiler chickens fed
corn-soybean meal diets. A total of 2,268 male broilers were allocated to 9 treatments, replicated 6 times,
in a randomized complete block design from 1 to 43
d. A positive control (PC) diet formulated to be adequate in nutrients and 4 reduced nutrient diets (NC1 to
NC4), with gradual decrease on AME, CP, and digestible amino acids (CP-dAA) and available P (avP) and
Ca contents, with or without enzyme supplementation,
were tested. The nutrient reductions applied were NC1
(−65 kcal/kg, −1.5% CP-dAA) and NC2 (−85 kcal/kg,
−3.0% CP-dAA) both with −0.15 percent point avP
and −0.12 percent point Ca and NC3 (−65 kcal/kg,
−1.5% CP-dAA) and NC4 (−85 kcal/kg, −3.0% CPdAA) both with −0.20 percent point avP and −0.16 percent point Ca. Supplementation of the NC diets
with the enzyme complex increased ADFI (P < 0.001),
ADG (P < 0.001), and reduced feed:gain (P < 0.01).
The magnitude of the enzyme effect in increasing feed
intake and weight gain was greater for the diets with
greatest reductions in avP and Ca. Enzyme supplementation increased (P < 0.001) feed intake of birds fed on
NC diets close to the level of feed consumption of the
PC. Enzyme supplementation to NC diets resulted in
all cases in lower (P < 0.05) feed:gain than the PC. Enzyme supplementation to NC1 and NC3 diets restored
bone mineralization to that of the PC, whereas ash
and Ca with NC2 and NC4 diets and P with NC4 diet
remained lower (P < 0.05). These results suggest that
the dietary supplementation with a multi-enzyme complex containing nonstarch polysaccharide enzymes and
phytase is efficient in reducing the P, energy, protein,
and amino acid specifications of corn-soybean meal diets.
Tipo de documento
Artículo
Versión del documento
Versión publicada
Lengua
English
Materias (CDU)
636 - Explotación y cría de animales. Cría del ganado y de animales domésticos
Páginas
10
Publicado por
Elsevier
Publicado en
Poultry Science
Citación
Francesch, M., and P.A. Geraert. 2009. “Enzyme Complex Containing Carbohydrases and Phytase Improves Growth Performance and Bone Mineralization of Broilers Fed Reduced Nutrient Corn-soybean-based Diets.” Poultry Science 88 (9): 1915–1924. doi: 10.3382/ps.2009-00073
Program
Nutrició Animal
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