Effects of Bacillus subtilis probiotic strain on growth performance, villi height and immune response against infectious bursal disease (IBD) of broiler chickens / by Rhoda May R. Mosaso.

By: Contributor(s): Material type: TextTextLanguage: English Publication details: Indang, Cavite : Cavite State University-Main Campus, 2016.Description: xii, 50 pages : illustrations ; 28 cmContent type:
  • text
Media type:
  • unmediated
Carrier type:
  • volume
Subject(s): DDC classification:
  • 636.5 M85 2016
Online resources: Production credits:
  • College of Veterinary Medicine and Biomedical Sciences (CVMBS)
Abstract: MOSASO, RHODA MAY R. Effects of Bacillus subtilis Probiotic Strain on Growth Performance, Villi Height, and Immune Response Against Infectious Bursal Disease (IBD) of Broiler Chickens. Undergraduate Thesis. Doctor of Veterinary Medicine. Cavite State Unversity, Indang, Cavite. April 2016. Adviser: Dr. Emmanuel R. Mago. The study was conducted in a commercial farm in Morong, Rizal from May 2015 to April 2016 to determine the effects of Bacillus subtilis probiotic strain on production parameters such as average daily gain (ADG), feed conversion ratio (FCR), as well as its effects on villi length of jejunum and ileum and serological response to Infectious Bursal Disease (IBD) vaccination. A total of 4000 day-old chicks were randomly assigned and divided into 2 groups: the Control group which was subjected to the normal protocol of trial farm and Treatment which was supplemented with test material. The probiotic is not less than 10 10 cfu/ 2 grams of powder mixed with 200 ml diluent and mixed with 200 liters of water with the final concentration of 10 6 and was given on day 10-11, day 13-15, day 21-22 and day 29-30. Each treatment was replicated twice with 1000 chicks per replicate. Although not statistically significant at p < 0.05, the Treatment group showed better performance as reflected in the average body weight (1664 g), ADG (46.30g) and FCR (1.68) compared to Control with an average body weight of 1597.5 g, 45.08 g ADG and 1.76 FCR. However, the body weight gain on 3rd and last week was statistically different between the two groups. The average villi height of Treatment in both jejunum and ileum was numerically longer compared to Control but also not statistically significant. Similar observation was noted in the immune response against IBD, wherein only two birds produced titer from the Treatment group. Based on the data gathered, the Bacillus subtilis probiotic strain had a significant effect on body weight gain but no significant effects on ADG, FCR, villi height and immune response against IBD. It is recommended that further studies be conducted to evaluate the effects of Bacillus subtilis employing its administration at an early stage of rearing period with extended duration. In addition, administration with increasing dosages can also be considered.
Star ratings
    Average rating: 0.0 (0 votes)
Holdings
Item type Current library Collection Call number Materials specified URL Status Notes Date due Barcode
Theses / Manuscripts Theses / Manuscripts Ladislao N. Diwa Memorial Library Theses Section Non-fiction 636.5 M85 2016 (Browse shelf(Opens below)) Link to resource Room use only T-5985 00009707

Thesis (Doctor of Veterinary Medicine) Cavite State University

Includes bibliographical references.

College of Veterinary Medicine and Biomedical Sciences (CVMBS)

MOSASO, RHODA MAY R. Effects of Bacillus subtilis Probiotic Strain on Growth Performance, Villi Height, and Immune Response Against Infectious Bursal Disease (IBD) of Broiler Chickens. Undergraduate Thesis. Doctor of Veterinary Medicine. Cavite State Unversity, Indang, Cavite. April 2016. Adviser: Dr. Emmanuel R. Mago.

The study was conducted in a commercial farm in Morong, Rizal from May 2015 to April 2016 to determine the effects of Bacillus subtilis probiotic strain on production parameters such as average daily gain (ADG), feed conversion ratio (FCR), as well as its effects on villi length of jejunum and ileum and serological response to Infectious Bursal Disease (IBD) vaccination. A total of 4000 day-old chicks were randomly assigned and divided into 2 groups: the Control group which was subjected to the normal protocol of trial farm and Treatment which was supplemented with test material. The probiotic is not less than 10 10 cfu/ 2 grams of powder mixed with 200 ml diluent and mixed with 200 liters of water with the final concentration of 10 6 and was given on day 10-11, day 13-15, day 21-22 and day 29-30. Each treatment was replicated twice with 1000 chicks per replicate.

Although not statistically significant at p < 0.05, the Treatment group showed better performance as reflected in the average body weight (1664 g), ADG (46.30g) and FCR (1.68) compared to Control with an average body weight of 1597.5 g, 45.08 g ADG and 1.76 FCR. However, the body weight gain on 3rd and last week was statistically different between the two groups. The average villi height of Treatment in both jejunum and ileum was numerically longer compared to Control but also not statistically significant. Similar observation was noted in the immune response against IBD, wherein only two birds produced titer from the Treatment group. Based on the data gathered, the Bacillus subtilis probiotic strain had a significant effect on body weight gain but no significant effects on ADG, FCR, villi height and immune response against IBD. It is recommended that further studies be conducted to evaluate the effects of Bacillus subtilis employing its administration at an early stage of rearing period with extended duration. In addition, administration with increasing dosages can also be considered.

Submitted to the University Library 08/04/2020 T-5985

Copyright © 2023. Cavite State University | Koha 23.05