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Title: Bio-Catalytic Conversion and Prospects of Different Poultry Wastes as Useful Poultry Feed Ingredient
Authors: Irfan, Muhammad
Keywords: Agriculture and Veterinary Sciences
Poultry Production
Issue Date: 2021
Publisher: University of Veterinary and Animal Sciences, Lahore.
Abstract: Poultry sector is one of the most organized, fastest growing and vibrant segments of agriculture industry in Pakistan. Although, this progression is encouraging to cater the need of our mushrooming population but it also comes up with the production of huge amount of poultry wastes i.e., dead birds, poultry bedding, offal’s and hatchery wastes. All over the world different methods are being practiced to dispose of these wastes like burying, rendering and incineration, with some advantages and disadvantages and may raise serious concerns of bio-security and animal health. Among these disposal methods, composting seems to be environment friendly and practically applicable method, however, its long duration is a major constrain for its on farm application. Inoculation of compost with different bio-catalysts can accelerate the composting process and enhance the product quality. Furthermore, these poultry wastes are copious reservoir of useful nutrients if processed properly and can further be used as poultry feed ingredient. Various studies have been planned on feeding poultry waste composts to large animals, but little literature prevails regarding the compost addition in poultry diet. Thus, present study has been planned to evaluate the physico-chemical and microbiological characteristics of poultry waste compost and its further utilization as poultry feed ingredient. This study was executed in two phases. During phase I, different poultry waste (dead birds, hatchery waste, offal and mixture of all) composts were prepared following bin and windrow composting methods and chemically analyzed. Dead bird’s compost showed superior proximate, amino acid and mineral profile with least bacterial load as compared to other waste materials, especially when bin composting method was adopted. In 2nd part of phase I, three different bio-catalysts (inoculants) i.e., Lactobacillus lecheniformus, Bacillus subtilis and consortium of both were applied at different concentrations (5, 10 and 15%), in dead bird’s composting following bin composting method to compare degradation potential of these biocatalysts and to enhance the quality of the end product. The consortium of Lactobacillus lecheniformus, +Bacillus subtilis when added at 10% concentration markedly expedite the decomposition. It was revealed that the bio-catalytic inoculation not only curtailed the natural long process of composting from 45-60 days to 32 days but also enhanced the quality of end product. In phase II, two biological trials were conducted to determine the feeding value of commercial broilers and layers. Experimental diets in both trials were comprised of increasing level of processed compost (0, 3, 6, 9 and 12). During trial-I, 270 LSL eggs laying birds (28-week old) were assigned randomly to 5 dietary groups for the period of 28 to 40 weeks. Each treatment was comprised of 06 replicates having 9 birds per cage, under CRD. In 2nd trial, 300 day- old broiler chicks were subjected to 5 treatment groups with 6 replicates each containing 10 chicks, under CRD for period of 35 days. In trial- I, egg production, egg weight, feed efficiency and livability of D3 (9%) birds were comparable (P>0.05) with control group. However, egg morphometric traits showed no marked changes in shape index, shell strength, yolk index and immune response against NDV, although slightly better Haugh unit was observed in control group birds. A slight downward trend in egg sensory characteristic was recorded with increase in compost inclusion level among treatment groups. However, marked effect (P>0.05) of dietary compost addition was observed in cost per dozen eggs. In 2nd trial, weight gain, carcass yield, breast and thigh yield were higher (P<0.05) in control group birds, however, numerically close to those given 3% compost in diet while no marked (P>0.05) differences were observed in giblets weight, immune response, mortality%, FCR and feed cost/Kg meat production among all dietary group birds. Compost addition up to 12% showed marked decrease in weight gain and carcass yield, however, increase in cumulative feed intake (CFI). Organoleptic traits scoring among birds of control and 3% compost dietary group was comparable (P>0.05) but values tended to decline with increasing compost addition in the diet. Furthermore, no marked (P>0.05) effect of compost addition was observed on NDV antibody titers among all treatment groups.
Gov't Doc #: 23786
Appears in Collections:PhD Thesis of All Public / Private Sector Universities / DAIs.

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