Evaluación del efecto de 4 niveles de stevia (Stevia Rebaudiana Bertoni) como promotor de crecimiento en cría y engorde de pollos de la línea Cobb 700 en la ciudad de Guaranda provincia de Bolívar
Breeding and fattening of chickens of the Cobb 700 line was evaluated by using different levels of ground stevia (0.5%, 1%, 1.5%, 2%). A DBCA was applied with five treatments and five repetitions, with a total of 400 animals distributed in 25 blocks, placing 16 chickens per repetition. Variance Anal...
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| Formato: | bachelorThesis |
| Idioma: | spa |
| Publicado: |
2020
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| Acceso en liña: | http://dspace.ueb.edu.ec/handle/123456789/3473 |
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Engadir etiqueta | Summary: | Breeding and fattening of chickens of the Cobb 700 line was evaluated by using different levels of ground stevia (0.5%, 1%, 1.5%, 2%). A DBCA was applied with five treatments and five repetitions, with a total of 400 animals distributed in 25 blocks, placing 16 chickens per repetition. Variance Analysis, 5% Tukey, economic analysis was performed. Proposing the following general objective: To evaluate the effect of 4 levels of stevia as a growth promoter in broilers and broilers of the Cobb 700 line. Specific objectives: Identify the best level of stevia as a growth promoter, Evaluate the zoomometric variables between the different treatments Determine intestinal health in each of the treatments. Perform an economic analysis benefit ratio. The research was carried out in the experimental farm Laguacoto II, Guaranda, of the Bolivar Province. The poultry sector is looking for new alternatives to replace APCs of chemical origin with those of natural origin such as the stevia plant. Because of this, the present investigation is carried out in which 18.97kg of ground stevia leaves are used. The results obtained showed highly significant significance (**) through the incorporation of stevia in 2% (treatment 5), since I have higher productivity compared to the other treatments, presenting the following results at the sixth week: final weight with a general average of 2504.17g / chicken, food conversion 1.95 gr. carcass weight with a general average of 2367.8 gr / chicken. A C.V (coefficient of variation) of less than 3% was obtained in all variables. The microbiological analysis resulted in T5 with a percentage of 2% ground stevia reduced the multiplication of pathogenic microorganisms (Salmonella spp and Escherichia coli) improving the intestinal health of birds and promoting productive parameters, due to the strengthening of the immune system . Economically, the T5 treatment with a cost of $ 1.08 / chicken was more profitable in the cost-benefit ratio. The increase in chicken weight was mainly related to: nutrition + ground stevia and biosecurity. Demonstrating in this research, it is economical to increase 2% ground stevia as a nutritional supplement in the dietary diet of Cobb 700 chickens. |
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