Growth performance and carcass characteristics of Koekoek chickens exposed to temperature variation with supplementary Coriander seed powder

Gebreyohans, Kiros Welay; Amaha, Negassi; Demeke, Solomon; Debusho, Legesse Kassa; Girma, Meseret

doi:10.1016/j.jtherbio.2023.103674

Cited by 4 publications

(1 citation statement)

References 42 publications

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“…At severe stress, chickens cannot dissipate body heat, resulting in organ function failure and death [45] (Figure 1). For example, Welay et al [46] revealed that broilers exposed to temperatures above 32 • C exhibited diminished feed intake and body weight gain, indicating a direct temperature effect on broiler growth. Sohail et al [47] revealed that broilers are subjected to chronic heat stress by reduced feed intake, lower body weight, and higher feed conversion ratio.…”

Section: Heat Stress In Poultrymentioning

confidence: 99%

Appropriate Genetic Approaches for Heat Tolerance and Maintaining Good Productivity in Tropical Poultry Production: A Review

Juiputta,

Chankitisakul,

Boonkum

2023

Veterinary Sciences

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Heat stress is a major environmental threat to poultry production systems, especially in tropical areas. The effects of heat stress have been discovered in several areas, including reduced growth rate, reduced egg production, low feed efficiency, impaired immunological responses, changes in intestinal microflora, metabolic changes, and deterioration of meat quality. Although several methods have been used to address the heat stress problem, it persists. The answer to this problem can be remedied sustainably if genetic improvement approaches are available. Therefore, the purpose of this review article was to present the application of different approaches to genetic improvement in poultry in the hope that users will find suitable solutions for their poultry population and be able to plan future poultry breeding programs.

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Section: Heat Stress In Poultrymentioning

confidence: 99%

Appropriate Genetic Approaches for Heat Tolerance and Maintaining Good Productivity in Tropical Poultry Production: A Review

Juiputta,

Chankitisakul,

Boonkum

2023

Veterinary Sciences

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Heat stress and poultry production: a comprehensive review

Oluwagbenga,

Fraley

2023

Poultry Science

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Sex differences in intestinal morphology and increase in diencephalic neuropeptide Y gene expression in female but not male Pekin ducks exposed to chronic heat stress

Oluwagbenga,

Bergman,

Ajuwon

et al. 2024

J Neuroendocrinology

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The impact of heat stress (HS) on production is intricately linked with feed intake. We investigated the effects of HS on intestines and diencephalic genes in Pekin ducks. One hundred and sixty adult ducks were allocated to two treatment rooms. The control room was maintained at 22°C and the HS room at 35°C for the first 10 h of the day then reduced to 29.5°C. After 3 weeks, 10 hens and 5 drakes were euthanized from each room and jejunum and ileum collected for histology. Brains were collected for gene expression analysis using qRT‐PCR. Intestinal morphology data were analyzed with two‐way ANOVA and diencephalic gene data were analyzed with Kruskal–Wallis test. There was an increase in villi width in the ileum (p = .0136) and jejunum (p = .0019) of HS hens compared to controls. HS drakes showed a higher crypt depth (CD) in the jejunum (p = .0198) compared to controls. There was an increase in crypt goblet cells (GC) count in the ileum (p = .0169) of HS drakes compared to HS hens. There was higher villi GC count (p = .07) in the jejunum of HS drakes compared to controls. There was an increase in the crypt GC density (p = .0054) in the ileum, not jejunum, of HS drakes compared to HS hens. Further, there were no differences in the proopiomelanocortin gene expression in either sex but there was an increase in the expression of neuropeptide Y (NPY) gene in HS hens (p = .031) only and a decrease in the corticotropin releasing hormone gene in the HS drakes (p = .037) compared to controls. These data show that there are sex differences in the effect of HS on gut morphology while the upregulation in NPY gene may suggest a role in mediating response to chronic HS.

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Growth performance and carcass characteristics of Koekoek chickens exposed to temperature variation with supplementary Coriander seed powder

Cited by 4 publications

References 42 publications

Appropriate Genetic Approaches for Heat Tolerance and Maintaining Good Productivity in Tropical Poultry Production: A Review

Appropriate Genetic Approaches for Heat Tolerance and Maintaining Good Productivity in Tropical Poultry Production: A Review

Heat stress and poultry production: a comprehensive review

Sex differences in intestinal morphology and increase in diencephalic neuropeptide Y gene expression in female but not male Pekin ducks exposed to chronic heat stress

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