Comparison of stress biomarkers in laying hens raised under a long-term multiple stress condition

Lee, Chayeong; Kim, Jong Hyuk; Kil, Dong Yong

doi:10.1016/j.psj.2022.101868

Cited by 15 publications

(14 citation statements)

References 65 publications

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“…The blood H:L ratio and feather CORT concentrations have been widely used as reliable biomarkers to determine the stress response of poultry ( Lee et al, 2022 ) because various physiological stressors such as stock density, high temperature, water deprivation, and fasting increased the blood H:L ratio ( Gross and Chickering, 1987 ) and feather CORT concentrations ( Lee et al, 2022 ). The current experiment also found that birds in HS-C treatments had the greatest blood H:L ratio.…”

Section: Discussionmentioning

confidence: 99%

“…The mortality was recorded daily. The feed conversion ratio ( FCR ) was calculated by dividing FI (g) and BWG (g) after correction for mortality ( Lee et al, 2022 ).…”

Section: Methodsmentioning

confidence: 99%

“…The feather samples were also collected from flight feathers to analyze CORT concentrations in the feather. The concentrations of CORT in feathers were analyzed by the method of Lee et al (2022) .…”

Section: Methodsmentioning

confidence: 99%

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Effect of individual or combination of dietary betaine and glycine on productive performance, stress response, liver health, and intestinal barrier function in broiler chickens raised under heat stress conditions

et al. 2023

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Section: Discussionmentioning

confidence: 99%

“…The mortality was recorded daily. The feed conversion ratio ( FCR ) was calculated by dividing FI (g) and BWG (g) after correction for mortality ( Lee et al, 2022 ).…”

Section: Methodsmentioning

confidence: 99%

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Effect of individual or combination of dietary betaine and glycine on productive performance, stress response, liver health, and intestinal barrier function in broiler chickens raised under heat stress conditions

et al. 2023

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“…Due to its simplicity and reliability, the measurement of the blood H/L ratio was the most common indicator of stress response in poultry (Post et al, 2003;Shakeri et al, 2014). The proportion of heterophils to lymphocytes in the blood was considered a potential stress biomarker in laying hens exposed to multiple stress conditions (Lee et al, 2022).…”

Section: Effect On Blood Parametersmentioning

confidence: 99%

Dietary supplementation with tomato waste to improve performance and egg quality of laying hens: a meta-analysis

Handayani¹,

Sofyan²,

Lestari³

et al. 2023

J. Anim. Feed Sci.

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“…However, most controlled studies have included a single stressor (e.g. heat stress, vaccination) [12], while the challenge model in the current study included heat, food and water deprivation, and high stocking density. Glucommanans is considered a feed additive with prebiotic effects that can be produced by combining cereal-derived mannose units to create different types of water soluble fibers.…”

Section: Introductionmentioning

confidence: 99%

Effects of Glucomannan Feed Additives on Large White Turkey Female Performance, Gastrointestinal Microbial Population, and Blood Corticosterone Levels in a Simulated Transport Challenge

KR¹,

AA²,

Fahrenholz³

et al. 2022

J Anim Sci Res

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Turkeys may experience stress due to conditions of transport, heat, and in some cases, feed and water restrictions. This may include experiencing conditions present when female turkeys are transported from the brooder house to the grow-out house, typically at 4 to 5 wk of age. This study’s objective was to determine the effect of glucomannan feed additives on performance and corticosterone response in Large White commercial females after an application of simulated conditions which birds might experience during transportation at 4 to 5 wk of age. The transport simulation consisted of reducing the space per bird from 0.198 m2 /bird to 0.028m2 /bird, with no food and water, and exposed to heat lamps, for no more than 18 h. Fourteen hundred and forty Large White female turkeys were randomly assigned to 48 concrete, pine shavings covered floor pens. The experimental design was a completely randomized block design with a one-factor arrangement of 2 sources of glucomannans (medium-chain and long-chain) with two inclusion levels of each (0.02 and 0.20% of the diet). These treatments were compared to two control treatments (no glucomannans), however, one with no simulated transport conditions and one exposed to simulated transport conditions. Bird’s performance, bursa, spleen, and blood corticosterone levels were analyzed in SAS 9.4 in a mixed model. No effects on growth performance of birds fed 0.02% glucomannans were observed. Birds fed glucomannans at 0.20% in the diet had a higher corticosterone level after the transport simulation was applied when compared to other treatments. However, birds fed medium-chain glucomannans at 0.20% had an improved performance after the transport simulation compared to birds fed the other glucomannan treatments. All birds recuperated their performance by d 45. No differences were found in the spleen and bursa weights at 45 d of age. Both glucomannans reduced the stress impact on intestinal bacteria by controlling the overgrowth of Lactobacillus and Fusobacteria while maintaining Bacteroidetes. In conclusion, glucomannans can be used in diets with no change in performance or health at 45 d of age while preserving intestinal microbiota from the negative effects of stress. At 45d, all birds recuperated from the simulated transport conditions applied at 29 d. Thus, the effects of glucomannans on turkey performance and health should be further investigated.

show abstract

Comparison of stress biomarkers in laying hens raised under a long-term multiple stress condition

Cited by 15 publications

References 65 publications

Effect of individual or combination of dietary betaine and glycine on productive performance, stress response, liver health, and intestinal barrier function in broiler chickens raised under heat stress conditions

Effect of individual or combination of dietary betaine and glycine on productive performance, stress response, liver health, and intestinal barrier function in broiler chickens raised under heat stress conditions

Dietary supplementation with tomato waste to improve performance and egg quality of laying hens: a meta-analysis

Effects of Glucomannan Feed Additives on Large White Turkey Female Performance, Gastrointestinal Microbial Population, and Blood Corticosterone Levels in a Simulated Transport Challenge

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