國立虎尾科技大學 |

Probiotic Supplementation Effects on Performance, Body Composition, and Energetic Efficiency of Broilers under Thermo-Neutral and Heat Stress Conditions.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	Probiotic Supplementation Effects on Performance, Body Composition, and Energetic Efficiency of Broilers under Thermo-Neutral and Heat Stress Conditions./
Author:	Schobert, Sarah Elsa Marie.
Description:	1 online resource (117 pages)
Notes:	Source: Masters Abstracts International, Volume: 57-01.
Contained By:	Masters Abstracts International57-01(E).
Subject:	Animal sciences. -
Online resource:	click for full text (PQDT)
ISBN:	9780355395051

Probiotic Supplementation Effects on Performance, Body Composition, and Energetic Efficiency of Broilers under Thermo-Neutral and Heat Stress Conditions.
Schobert, Sarah Elsa Marie.

Probiotic Supplementation Effects on Performance, Body Composition, and Energetic Efficiency of Broilers under Thermo-Neutral and Heat Stress Conditions. - 1 online resource (117 pages)

Source: Masters Abstracts International, Volume: 57-01.

Thesis (M.S.)--Oklahoma State University, 2017.

Includes bibliographical references

Supplementation effect of 3 Oklahoma State University (OSU) Bacillus strains were examined on broilers' performance, body composition, metabolic parameters, and respiration rate. The experiment was conducted in 2 experimental phases, 0 to 41 d of age and 21 to 41 d of age, fed diets with and without probiotic supplementation, and exposed to thermo-neutral (TN) and cyclic heat stress (HS), respectively. During phase I, a total of 432 d-old Cobb-500 chicks were transported to the study site and randomly divided into 72 floor pens and fed 2 diets, control (no probiotic) and treatment (probiotic) to 6 wk of age. On d 21, phase II of the experiment was initiated with 52 broilers, fed with and without the OSU probiotic. The broilers were randomly selected from the floor pens and transferred to the OSU Poultry Metabolic Chambers. The birds were subjected to 4 treatments, no probiotic at TN (CTN), probiotic at TN (PTN), no probiotic at HS (CHS), and probiotic at HS (PHS). The HS birds were exposed to 32 +/- 1°C from 1800 to 2100 h. Phase I probiotic-fed birds showed an increase (P < 0.05) in their BW, body composition, and metabolizable energy retained during the first 2 wk of age. However, mixed results were noted after wk 2. Furthermore, in phase II, PHS showed an improvement (P < 0.05) in their wk 6 BW when compared to CHS. Weekly average respiration per min was lower (P < 0.05) for PHS when compared to CHS, indicating a limit in these birds ability to dissipate heat and maintain homeostasis. Based on obtained results, the fed probiotic improved performance in the early life of broilers. In addition, broilers exposed beyond optimal ambient temperatures found relief when the diet included OSU probiotics. These results suggest continuous probiotic supplementation in a TN environment has no economic merits. Probiotics may give more benefits to broilers when supplemented the first few days during ration changes and in stressful management scenarios, such as HS. Further research is needed to investigate the effect of probiotic supplementation for the first few days of each diet change.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9780355395051Subjects--Topical Terms:

1178863
Animal sciences.
Index Terms--Genre/Form:

554714
Electronic books.

Probiotic Supplementation Effects on Performance, Body Composition, and Energetic Efficiency of Broilers under Thermo-Neutral and Heat Stress Conditions.
LDR:03390ntm a2200325Ki 4500 001 917353
005 20181012133445.5
006 m o u
007 cr mn||||a|a||
008 190606s2017 xx obm 000 0 eng d
020 $a 9780355395051
035 $a (MiAaPQ)AAI10275923
035 $a (MiAaPQ)okstate:15180
035 $a AAI10275923
040 $a MiAaPQ $b eng $c MiAaPQ $d NTU
100 1 $a Schobert, Sarah Elsa Marie. $3 1191375
245 1 0 $a Probiotic Supplementation Effects on Performance, Body Composition, and Energetic Efficiency of Broilers under Thermo-Neutral and Heat Stress Conditions.
264 0 $c 2017
300 $a 1 online resource (117 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Masters Abstracts International, Volume: 57-01.
500 $a Advisers: Steven C. Cooper; Ali Beker.
502 $a Thesis (M.S.)--Oklahoma State University, 2017.
504 $a Includes bibliographical references
520 $a Supplementation effect of 3 Oklahoma State University (OSU) Bacillus strains were examined on broilers' performance, body composition, metabolic parameters, and respiration rate. The experiment was conducted in 2 experimental phases, 0 to 41 d of age and 21 to 41 d of age, fed diets with and without probiotic supplementation, and exposed to thermo-neutral (TN) and cyclic heat stress (HS), respectively. During phase I, a total of 432 d-old Cobb-500 chicks were transported to the study site and randomly divided into 72 floor pens and fed 2 diets, control (no probiotic) and treatment (probiotic) to 6 wk of age. On d 21, phase II of the experiment was initiated with 52 broilers, fed with and without the OSU probiotic. The broilers were randomly selected from the floor pens and transferred to the OSU Poultry Metabolic Chambers. The birds were subjected to 4 treatments, no probiotic at TN (CTN), probiotic at TN (PTN), no probiotic at HS (CHS), and probiotic at HS (PHS). The HS birds were exposed to 32 +/- 1°C from 1800 to 2100 h. Phase I probiotic-fed birds showed an increase (P < 0.05) in their BW, body composition, and metabolizable energy retained during the first 2 wk of age. However, mixed results were noted after wk 2. Furthermore, in phase II, PHS showed an improvement (P < 0.05) in their wk 6 BW when compared to CHS. Weekly average respiration per min was lower (P < 0.05) for PHS when compared to CHS, indicating a limit in these birds ability to dissipate heat and maintain homeostasis. Based on obtained results, the fed probiotic improved performance in the early life of broilers. In addition, broilers exposed beyond optimal ambient temperatures found relief when the diet included OSU probiotics. These results suggest continuous probiotic supplementation in a TN environment has no economic merits. Probiotics may give more benefits to broilers when supplemented the first few days during ration changes and in stressful management scenarios, such as HS. Further research is needed to investigate the effect of probiotic supplementation for the first few days of each diet change.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
650 4 $a Animal sciences. $3 1178863
655 7 $a Electronic books. $2 local $3 554714
690 $a 0475
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a Oklahoma State University. $b Animal Science. $3 1191367
773 0 $t Masters Abstracts International $g 57-01(E).
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10275923 $z click for full text (PQDT)