Evaluation of Bacillus subtilis biopreparations as growth promoters in chickens

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Grethel Mili?n
A. J. Rond?n
M. P?rez
Ram?n Bocourt
Zoraya Rodr?guez
M. J. Ranilla
M. Rodr?guez
M. D. Carro

Abstract

Bacillus subtilis bioprepations were evaluated as growth promoters in chickens. Two hundred chickens of the Cuban breeder hybrid EB34 were used, according to a completely randomized design. Four treatments were studied: diet (maize-soybean), diet + biopreparation C-31, diet + biopreparation C-34 and diet + biopreparation E-44, applied to a dosage of 109 endospores/g-1 of concentrate. The experiment was carried out for 42 d and microbiological and fermentative indicators were assessed. The study of these biopreparations provoked improvements in the microbial balance of the birds? caecum, when at 21 and 42 d was observed increase of the population of Lactobacillus, Bacillus endospores and total anaerobes, as well as reduction of coliforms at 42 d. In the treated groups with the B. subtilis biopreparations and their endospores the total and individual short chain fatty acids (SCFA) and the lactic acid content, were increased with a decrease of the intestinal pH at 42 d. It is concluded that B. subtilis biopreparations can be used as growth promoters in chickens.
Key words: probiotic, Bacillus subtilis, chickens, growth promoters

Article Details

How to Cite
Mili?n, G., Rond?n, A. J., P?rez, M., Bocourt, R., Rodr?guez, Z., Ranilla, M. J., Rodr?guez, M., & Carro, M. D. (2013). Evaluation of Bacillus subtilis biopreparations as growth promoters in chickens. Cuban Journal of Agricultural Science, 47(1). Retrieved from https://cjascience.com/index.php/CJAS/article/view/257
Section
Animal Science
Author Biographies

Grethel Mili?n

Centro de Estudios Biotecnol?gicos, Universidad de Matanzas ?Camilo Cienfuegos?, Autopista Varadero km 3 ?, Matanzas, Cuba

A. J. Rond?n

Centro de Estudios Biotecnol?gicos, Universidad de Matanzas ?Camilo Cienfuegos?, Autopista Varadero km 3 ?, Matanzas, Cuba

M. P?rez

Centro de Estudios Biotecnol?gicos, Universidad de Matanzas ?Camilo Cienfuegos?, Autopista Varadero km 3 ?, Matanzas, Cuba

Ram?n Bocourt

Instituto de Ciencia Animal, Apartado Postal 24, San Jos? de las Lajas, Mayabeque, Cuba

Zoraya Rodr?guez

Instituto de Ciencia Animal, Apartado Postal 24, San Jos? de las Lajas, Mayabeque, Cuba

M. J. Ranilla

Facultad de Veterinaria, Universidad de Le?n, Campus de Vegazana s/n. E 24071, Le?n, Espa?a

M. Rodr?guez

Centro de Estudios Biotecnol?gicos, Universidad de Matanzas ?Camilo Cienfuegos?, Autopista Varadero km 3 ?, Matanzas, Cuba

M. D. Carro

Facultad de Veterinaria, Universidad de Le?n, Campus de Vegazana s/n. E 24071, Le?n, Espa?a

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