Enriching the Nutritional Value of Agro-Industrial By-Products by Enzyme Supplementation in Poultry
KrishiKosh
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Title |
Enriching the Nutritional Value of Agro-Industrial By-Products by Enzyme Supplementation in Poultry
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Creator |
Ravikiran, D.
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Contributor |
Devegowda, G.
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Subject |
organic fertilizers, farmyard manure, nitrogen, maize, fertilizers, nutrients, yields, crops, livestock, grain
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Description |
A study was conducted to estimate the non-starch polysaccharide (NSP) contents of various poultry feed ingredients and to assess the possibility of using enzyme complexes for enhancing the nutritive value of agro-industrial by-products in laying hen diets. NSP estimation studies revealed that cereals were high in pentosans, oilcakes in pectins and rice bran and sunflower cake were high in both pectins and cellulose, advocating the usage of enzyme preparations containing xylanase, pectinase and cellulase. Biological trial with 13176 Bovans White commercial layers over the duration of 24 weeks with or without enzyme supplementation at the level of 0.5 kg per ton proved that enzyme supplementation essentially improved the nutritive value of the feed in commercial layers. Enzyme supplementation reduced the feed intake by an average of 4 grams per bird per day and improved the feed efficiency by about 5grams per egg over the entire duration of the trial, both suggesting better nutrient utilization upon enzyme supplementation. Enzyme supplementation also had minor desirable influence on egg production (+ 0.4%), gut viscosity (-14.3%), litter moisture (- 9.7%), and ileal digestibility of protein (+ 12.5%) as against the control group. The influence on egg weight and livability were not quite prominent. Enzyme supplementation also considerably reduced the total bacterial counts and coliform counts in the intestines of supplemented birds. It is proposed that the reduction in digesta viscosity and the gut bacterial counts in enzyme supplemented group could have enabled the better digestion, absorption and utilization of nutrients leading to better gut health and improved performance. |
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Date |
2016-06-21T14:12:12Z
2016-06-21T14:12:12Z 2005-07-16 |
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Type |
Thesis
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Identifier |
http://krishikosh.egranth.ac.in/handle/1/67613
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Language |
en
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Format |
application/pdf
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Publisher |
Karnataka Veterinary, Animal and Fisheries Sciences University, Bidar
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