Broiler Productivity When Using Digestible Feed Components in Mixed Fodders

The efficiency of new dietary protein additives based on the wastes and by-products of the slaughter and primary processing of poultry was studied on four treatments of broilers (cross “Smena-8”, 1-38 days of age; 3 replicates per treatment, 35 birds per replicate) reared in similar conditions of management and nutrition. Control treatment 1 was fed vegetable diets without animal-derived ingredients; control treatment 2 was fed diets supplemented with fishmeal; in diets for treatments 3 and 4 fishmeal was substituted by two new protein additives produced by the fermentation of the preliminary hydrolyzed slaughter wastes (feathers, intestines, blood, meat-bone residues, etc.) by proteolytic enzymes in different conditions (2 hours at 55°C for treatment 3; 1.5 minutes at 160°C for treatment 4). The best productive performance in broilers was found in treatment 3: average live bodyweight at 38 days of age in this treatment was significantly higher by 8.47% in compare to control and by 4.57% in compare to treatment 2 (p≤0.05); feed conversion ratio was lower by 2.96 and 1.80%, respectively. In treatment 4 these parameters were slightly worse in compare to treatment 3 though better than in treatments 1 and 2. Treatments 3 and 4 also featured higher meat yield and better sensory characteristics of cooked meat and broth.

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Microclimate influence investigation on broilers industrial production intensification by information technology methods

Belykh

Burdukovskaya

Ivonina

et al. 2021

IOP Conf. Ser.: Earth Environ. Sci.

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The article contains regression mathematical models that describe the effect of mechanical and automatic microclimate control systems on the growth and development of Arbor Acres broiler chickens in Sayan broiler agro-industrial complex in conditions of on-ground keeping. The following microclimate parameters are considered: temperature, humidity, illumination. Cramer-Welch, Wilcoxon criteria are used to test the statistical hypothesis of homogeneity of the two considered samples. The Chow test is taken on the possibility of constructing two different mathematical models of the same type that describe the patterns of development of simulated indicators. Statistical estimates of the significance of the constructed models and factors included in the models are calculated. The Fisher criterion is checked to see the differences in the constructed models and choose a more acceptable one to describe the effect of the microclimate on the production of young birds. The results of regression analysis are interpreted in relation to the subject area under study. Graphical visualization of analysis of initial and output data of built models is performed. Factors are ranked by degree of their effect on the resulting index using elasticity coefficients and share of their influence. The main production indicators are calculated according to the results of population cultivation - average daily growth, absolute growth, relative growth rate, liveability. The article calculates the economic effect in one complete cycle of broiler chickens growing.

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Broiler Productivity When Using Digestible Feed Components in Mixed Fodders

Cited by 3 publications

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The effects of feed additives based on the wastes of poultry processing on the productive performance and meat quality in broiler chicks

The effects of feed additives based on the wastes of poultry processing on the productive performance and meat quality in broiler chicks

The productive performance in broilers fed diets supplemented with new animal-derived protein additives

Microclimate influence investigation on broilers industrial production intensification by information technology methods

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