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Impact of Dietary Enzymes on Performance, Intestinal Viscosity, Gut Bacterial Load and Optimization of Nutritional Matrix of Broilers Fed Corn-Soy Diets

KrishiKosh

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Title Impact of Dietary Enzymes on Performance, Intestinal Viscosity, Gut Bacterial Load and Optimization of Nutritional Matrix of Broilers Fed Corn-Soy Diets
 
Creator Ramesha, K.R.
 
Contributor Devegowda, G.
 
Subject enzymes, livestock, biological phenomena, proteins, polysaccharides, additives, oilseed cakes, organic acid salts, cellulose products, nutrients
 
Description A biological trial was conducted to evaluate the effects of enzyme complex on the performance, toe ash, intestinal viscosity and bacterial load of broiler chickens fed cornsoybean meal based diets for six weeks.

Three hundred and sixty day-old Cobb broiler chicks were randomly allocated to three experimental groups, each comprising six replicates of 10 males and 10 females, on a deep litter system of rearing. The experimental diets included (1) corn-soy diet, (2) corn-soy diet + enzyme @ 0.02%, (3) reformulated diet (formulated to contain 75 Kcal ME, 0.1% calcium and 0.1% available phosphorus less as compared to diet 1) + enzyme 0.02%. The birds were reared under standard managemental practice with feed and water ad libitum.

The enzyme complex (Allzyme SSFTM) used in this trial was produced by solidstate fermentation technology using nongenetically modified Aspergillus niger. The enzyme complex contained activity of protease, amylase, xylanase, -glucanase, pectinase, cellulase and phytase. The enzyme was added in the diets at the level of 0.02 per cent. Maize and SBM samples were screened for nonstarch polysaccharide (NSP). Maize contained higher percent of total pentosan (5.10%). SBM was rich in pectins (6.5%) and oligosaccharides (6.0%). The total NSP was higher in SBM (28.62%) compared to maize (9.80%). Addition of enzyme complex significantly improved weight gain (3.79%) and reduced feed conversion ratio (3.72%) as compared to the control diet. However, addition of enzyme complex to control diet had no significant effect, on feed intake. In reformulated diet with enzyme complex, increased feed intake was recorded during second and third week of age but not in other weeks. Addition of enzyme complex to the reformulated diet containing 75 Kcal ME, 0.1% calcium, 0.1% available phosphorus less compared to control diet produced similar performance as that of control diet. Significant reduction in intestinal viscosity was recorded in the birds fed reformulated diet with enzyme complex both at fourth week (22.72%) and sixth week (16.42%) of age. Addition of enzyme complex to the control diet showed no effect. Toe ash content of broiler chickens fed control diet with enzyme complex (60 SPU/ kg diet) was significantly increased both at fourth (36.87 Vs 32.45) and sixth week (36.03 Vs 34.00) of age. Addition of enzyme complex to reformulated diet yielded toe ash content, which was similar to that of control, diet at fourth week (33.16 Vs 32.45) and sixth week (34.33 Vs 34.00). In the ileal digesta, the viable counts of Coliforms, Streptococcus and total count were significantly (P
 
Date 2016-06-22T15:47:00Z
2016-06-22T15:47:00Z
2005-09-24
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/67754
 
Language en
 
Format application/pdf
 
Publisher Karnataka Veterinary, Animal and Fisheries Sciences University, Bidar