자료유형  

 학위논문

Control Number  

0016935511

International Standard Book Number  

9798380360579

Dewey Decimal Classification Number  

636

Main Entry-Personal Name  

Al-Jumaa, Yansoon Moneer Farhan.

Publication, Distribution, etc. (Imprint  

[S.l.] : Texas A&M University., 2022

Publication, Distribution, etc. (Imprint  

Ann Arbor : ProQuest Dissertations & Theses, 2022

Physical Description  

1 online resource(152 p.)

General Note  

Source: Dissertations Abstracts International, Volume: 85-03, Section: A.

General Note  

Advisor: Bailey, Christopher A.

Dissertation Note  

Thesis (Ph.D.)--Texas A&M University, 2022.

Restrictions on Access Note  

This item must not be sold to any third party vendors.

Summary, Etc.  

요약This research was conducted to evaluate the effect of different types of feed additives (probiotics, prebiotics, postbiotics and their mixtures) on challenged or Noneee-challenged broilers with Clostridium perfringens or Salmonella Typhimurium, in starter or full-term chickens' performance.In the first study, the objective was to determine the effect of adding postbiotics (XPC® and XPC-Ultra®) and prebiotics (Safmannan® 125 and Safmannan® 250) to broiler chickens' performance while challenging with Salmonella Typhimurium. The results of this study did not show significant enhancement in broilers' performance at day 10. Safmannan® 125 showed significant reduction in Salmonella Typhimurium count on the plates compared to all other challenged groups.In the second study, postbiotics (XPC® and XPC-Ultra®) and prebiotics (Safmannan® 250 and Safmannan® 500) were used to study their effects on broiler chickens' performance while challenging with Clostridium perfringens. The results showed these additives groups did not retain the performances parameters to Noneee-challenged control-like at day 21, as they did not enhance performance significantly compared to challenged control group with no additives.In the third study, the objective was to evaluate the effect of adding Phelio Microsaf® probiotic, Envera Goplus® probiotic, Safmannan® prebiotic, and combination of Envera Goplus® + Safmannan® on broiler performance while challenging with Clostridium perfringens. The results showed no significant differences in performance parameters between the additives groups and challenged control group at day 21 while challenging with Clostridium perfringens.In the fourth study, the objective was to evaluate the effect Envera Goplus® probiotic, Actisaf® probiotic, Safmannan® prebiotic, and XPC® postbiotic on full term broiler chickens' performance, fecal dry matter percentage, and intestinal morphology of the chickens. The results showed there were no significant enhancement of full term broilers' performance at day 42 and no differences in fecal dry matter percentage or intestinal morphology between groups were found.In the final study, the objective was to evaluate the effect of different concentrations of Safmannan® prebiotic + Bacillus probiotic on broilers' performance while challenging with Clostridium perfringens. The results showed no significant enhancement in broilers' performance while adding the combinations of Safmannan® and Bacillus.In conclusion, adding the mentioned additives in these concentrations did not enhance broilers' performance while challenging with or without pathogens.

Subject Added Entry-Topical Term  

Animal sciences.

Subject Added Entry-Topical Term  

Environmental science.

Index Term-Uncontrolled  

Broilers

Index Term-Uncontrolled  

Antibiotic alternatives

Index Term-Uncontrolled  

Probiotic

Index Term-Uncontrolled  

Prebiotic

Index Term-Uncontrolled  

Postbiotic

Index Term-Uncontrolled  

Yeast cell wall

Index Term-Uncontrolled  

Bacillus

Index Term-Uncontrolled  

Lactobacillus

Index Term-Uncontrolled  

Salmonella Typhimurium

Index Term-Uncontrolled  

Clostridium perfringens

Added Entry-Corporate Name  

Texas A&M University Poultry Science

Host Item Entry  

Dissertations Abstracts International. 85-03A.

Host Item Entry  

Dissertation Abstract International

Electronic Location and Access  

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Control Number  

joongbu:641091