scholarly journals The probiotic Bacillus licheniformis ameliorates heat stress-induced impairment of egg production, gut morphology, and intestinal mucosal immunity in laying hens

2012 ◽  
Vol 91 (3) ◽  
pp. 575-582 ◽  
Author(s):  
W. Deng ◽  
X.F. Dong ◽  
J.M. Tong ◽  
Q. Zhang
Keyword(s):  
Heat Stress ◽  
Bacillus Licheniformis ◽  
Mucosal Immunity ◽  
Egg Production ◽  
Laying Hens ◽  
Gut Morphology

scholarly journals Dietary Germinated Paddy Rice and Stocking Density Affect Egg Performance, Serum Biochemical Properties, and Proteomic and Transcriptomic Response of Laying Hens Exposed to Chronic Heat Stress

Proteomes ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 48
Author(s):  
Tossaporn Incharoen ◽  
Sittiruk Roytrakul ◽  
Wirot Likittrakulwong
Keyword(s):  
Heat Stress ◽  
Egg Production ◽  
Laying Hens ◽  
Protein Profile ◽  
Stocking Density ◽  
Biochemical Properties ◽  
Paddy Rice ◽  
Egg Mass ◽  
Serum Samples ◽  
Transcriptomic Response

Germinated paddy rice (GPR) could be a good alternative feed source for poultry with stocking density and heat stress problems. A total of 72 Hy-line Brown laying hens raised under low (LSD, 0.12 m2/bird) and high stocking densities (HSD, 0.06 m2/bird) were investigated. Three dietary GPR levels (0, 74 and 148 g/kg) were used. It was found that average daily feed intake, hen-day egg production, and egg mass significantly decreased in the HSD group. The levels of serum glucose (GLU), phosphorous (P), corticosterone (CORT), total Ig, lysozyme (LZY), and superoxide dismutase activities (SOD) in the HSD group were higher than those in the LSD group. Dietary GPR significantly affected GLU, P, alternative complement haemolytic 50 (ACH50), total Ig, and LZY. Moreover, CORT level significantly decreased in 74 and 148 g/kg dietary GPR groups, whereas SOD significantly increased only in the 148 g/kg dietary GPR group. Serum samples were analyzed using liquid chromatography-tandem mass spectrometry, and 8607 proteins were identified. Proteome analysis revealed 19 proteins which were enriched in different stocking densities and dietary GPR levels. Quantitative real-time reverse transcription-PCR technique was successfully used to verify the differentiated abundant protein profile changes. The proteins identified in this study could serve as appropriate biomarkers.

scholarly journals A simple way to reduce heat stress in laying hens as judged by egg laying, body weight gain and biochemical parameters

2001 ◽  
Vol 49 (4) ◽  
pp. 421-430 ◽  
Author(s):  
K. Şahin ◽  
O. Küçük
Keyword(s):  
Heat Stress ◽  
Feed Intake ◽  
Egg Production ◽  
Laying Hens ◽  
Body Weight Gain ◽  
Management Practice ◽  
Egg Laying ◽  
Control Group ◽  
Serum Glutamic Oxaloacetic Transaminase ◽  
Feed Withdrawal

This study was designed to test the effects of feed withdrawal and darkening on the performance, triiodothyronine (T3), thyroxine (T4), thyroid-stimulating hormone (TSH), adrenocorticotropic hormone (ACTH), and some blood serum metabolite and mineral concentrations of laying hens reared at high ambient temperatures ranging from 25 to 35 °C. Ninety, 16-week-old hens (Ross Brown) were divided into 3 groups, 30 hens each. The first group was used as control. Hens in the second group (feed withdrawal) were subjected to feed removal from 14:00 to 18:00, and hens in the third group (darkening) were subjected to light restriction from 14:00 to 18:00 using black curtains. Liveweight, feed intake, and egg production were higher (P < 0.01) in the feed withdrawal and darkening groups, particularly in the darkening group, than in the control. Water intake was higher in the control group compared with the feed withdrawal and darkening groups (P < 0.01). T3, T4, and TSH concentrations in the serum were higher (P < 0.01), whereas ACTH serum concentration was lower (P < 0.01) in the feed withdrawal and darkening groups compared with the control. The haematocrit was higher in the feed withdrawal and darkening groups compared with the control (P < 0.01). Darkening and feed withdrawal treatments increased serum glucose, urea-N, uric acid, albumin, triglyceride, cholesterol, Ca, P, Na, and K concentrations, also the activities of amylase and alkaline phosphatase, but did not influence the activities of serum glutamic-oxaloacetic transaminase (SGOT) and serum glutamic pyruvic transaminase (SGPT). The present study found that feed withdrawal and darkening, particularly darkening, at high temperatures during the summer months offer a good management practice to reduce heat stress related depression in feed intake and egg production in laying hens.

Effect of perches and solid sides on production, plumage and foot condition of laying hens housed in conventional cages in a naturally ventilated shed

1996 ◽  
Vol 36 (3) ◽  
pp. 269 ◽  
Author(s):  
PC Glatz ◽  
JL Barnett
Keyword(s):  
Heat Stress ◽  
Food Intake ◽  
Egg Production ◽  
Laying Hens ◽  
Shell Weight ◽  
Shell Quality ◽  
Hot Weather

The effect of modified cages on production, shell quality, feather cover and foot condition was measured in 2 Australian commercial laying strains housed in a naturally ventilated laying shed from 18 to82 weeks of age. Two cage modifications were investigated. Firstly , the inclusion of a perch within the cage, and secondly, the installation of solid sides. Compared with normal cages, installation of a perch in a cage reduced food intake (5.3%) and liveweight (4.5% at 82 weeks) and improved feather cover around the vent (feather score of 2.15 to 2.66). This was offset by a decrease in egg production (2.4%), shell weight (1.5%) and thickness (11%), an increase in cracked (53.8%) and dirty eggs (28.9%), and an increase in claw length (9.2%). Relative to control cages, the provision of solid sides in cages improved overall feather cover of hens (feather score of 2.46 to 2.67), but there was a 54.5% increase in hen mortality during a period of hot weather. Additional modifications to the cage are required to optimise the benefit of perches. Similarly, improvement in ventilation and cooling in naturally ventilated sheds are required to maximise the benefits of solid-sided cages for hens and avoid heat stress.

scholarly journals Hen-Day Egg Production and Qualitative Egg Indices in Laying Hens Administered with Lycopene and Vitamin E During the Hot-Dry Season

2021 ◽  
Author(s):  
Joseph Ayodele Obidi ◽  
Joseph Olusegun Ayo ◽  
Peter Ibrahim Rekwot ◽  
Barth Izuchukwu Onyeanusi
Keyword(s):  
Heat Stress ◽  
Vitamin E ◽  
Egg Production ◽  
Laying Hens ◽  
Experimental Period ◽  
Dry Season ◽  
Heat Index ◽  
Eggshell Thickness ◽  
Standard Procedures ◽  
Hot Dry Season

Abstract The aim of the study was to evaluate the ameliorative effects of lycopene and vitamin E, administered individually and in combination, on laying hens during the hot-dry season. The dry-and wet-bulb temperature were recorded daily from 06:00–18:00 h during the 5-week experimental period. Daily and weekly hen-day egg productions, egg weight, eggshell thickness and eggshell weight were determined using standard procedures. The dry-bulb temperature (23.0°C – 39.0°C) and temperature - heat index (24.4°C − 35.0°C) recorded show that the hens were subjected to heat stress during the season. Egg production in the laying hens in lycopene (62.4 ± 1.1 %), vitamin E (62.1 ± 1.2%) and lycopene + vitamin E (62.7 ± 1.0 %) groups were higher (P < 0.05) than in controls (56.0 ± 0.8%). Eggshell was thickest in lycopene + vitamin E group (0.28 ± 0.02 mm), compared to lycopene (0.23 ± 0.02 mm) and vitamin E group (0.22 ± 0.02 mm). The thickness was lowest (P < 0.05) in control hens (0.18 ± 0.02 mm), compared to any other group. Similarly, control laying hens recorded the least (P < 0.05) in eggshell weight (6.7 ± 0.02 g), compared to the weights recorded in lycopene + vitamin E, lycopene and vitamin E groups (7.3 ± 0.24 g, 7.3 ± 0.3 g and 7.2 ± 0.3 g, respectively). In conclusion, lycopene and vitamin E ameliorated the risk of adverse effects of heat stress by increasing hen-day production, eggshell weight and eggshell thickness during the hot-dry season.

Effects of high levels of vitamin e supplementation in heat stressed laying hens

1995 ◽  
Vol 1995 ◽  
pp. 49-49
Author(s):  
Sandy Bollengier ◽  
G. Uzu ◽  
P.E.V. Williams ◽  
C.C. Whitehead
Keyword(s):  
Heat Stress ◽  
Vitamin E ◽  
Egg Production ◽  
Laying Hens ◽  
Plasma Concentrations ◽  
Short Exposure ◽  
Dietary Vitamin ◽  
Small Scale ◽  
Supplemental Vitamin ◽  
High Level

It was investigated in a small-scale study using a climate-controlled room at IAPGR, Roslin, that the effects of feeding a high level of supplemental vitamin E (500 mg/kg) on egg production and plasma concentrations of egg-associated metabolites in laying hens subjected to a short exposure (7 days) to a moderate heat stress (temperature of 32°C). The study showed, on small group sizes (12 birds / group), that in control birds (fed 30 mg supplemental vitamin E/kg), this degree of heat stress depressed egg production by about 30%. In the birds receiving the high level of vitamin E, egg production was maintained at levels very close to those prior to the heat stress. The objective of this experiment was to confirm in a larger scale the effects of high levels of dietary vitamin E on egg production of hens exposed to a chronic heat stress and during a period of recovery at thermoneutral temperatures.

scholarly journals The Effects of Different Levels Chlorell Microalgae on Performance and Immune Response of Laying Hens Under Heat Stress Condition

2015 ◽  
Vol 9 (2) ◽  
pp. 71-74 ◽  
Author(s):  
Nasroallah Moradi Kor ◽  
Neda Mohamadi
Keyword(s):  
Immune Response ◽  
Heat Stress ◽  
Egg Production ◽  
Stress Condition ◽  
Linear Models ◽  
Laying Hens ◽  
Egg Mass ◽  
Randomized Design ◽  
Heat Stress Condition ◽  
Different Levels

This study was conducted to determine the effects of different levels microalgae Chlorell sp. on performance of laying hens under heat stress condition. A completely randomized design experiment, with 7 replicates and 6 treatments (9 birds per replicate) was carried out by allotting 378 white Lohman strain laying hens at 65 weeks of age. Six experimental treatments were continual addition of 0, 100, 200, 300,400 ppm microalgae Chlorell and 400 ppm toein to drinking warer were fed to laying hens for 9 weeks. Egg production, egg weight, egg mass output and feed intake were determined. Antibody production against sheep red blood cells (SRBC) also was measured. Data  were  analyzed  by  ANOVA  using  General  Linear Models procedure of  SAS software and comparison of means  were  compared  using  Duncan’s  multiple  range test. The results of this experiment showed that microalgae Chlorell had no effect on productive performance. Adding microalgae Chlorell to the drinking water improved immune response of laying hens and a more positive effect was observed when 400 ppm added to the water. It is concluded that the addition of microalgae Chlorell to the water drinking of laying hens improved immune response of laying hens.DOI: http://dx.doi.org/10.3126/ijls.v9i2.12058 International Journal of Life Sciences 9 (2) : 2015; 71-74

scholarly journals Heat stress decreases egg production of laying hens by inducing apoptosis of follicular cells via activating the FasL/Fas and TNF-α systems

2020 ◽  
Vol 99 (11) ◽  
pp. 6084-6093
Author(s):  
Gui-Ming Li ◽  
Li-Ping Liu ◽  
Bin Yin ◽  
Yue-Yue Liu ◽  
Wen-Wen Dong ◽  
...  
Keyword(s):  
Heat Stress ◽  
Egg Production ◽  
Laying Hens ◽  
Follicular Cells ◽  
Tnf Α

Effects of high levels of vitamin e supplementation in heat stressed laying hens

1995 ◽  
Vol 1995 ◽  
pp. 49-49
Author(s):  
Sandy Bollengier ◽  
G. Uzu ◽  
P.E.V. Williams ◽  
C.C. Whitehead
Keyword(s):  
Heat Stress ◽  
Vitamin E ◽  
Egg Production ◽  
Laying Hens ◽  
Plasma Concentrations ◽  
Short Exposure ◽  
Dietary Vitamin ◽  
Small Scale ◽  
Supplemental Vitamin ◽  
High Level

It was investigated in a small-scale study using a climate-controlled room at IAPGR, Roslin, that the effects of feeding a high level of supplemental vitamin E (500 mg/kg) on egg production and plasma concentrations of egg-associated metabolites in laying hens subjected to a short exposure (7 days) to a moderate heat stress (temperature of 32°C). The study showed, on small group sizes (12 birds / group), that in control birds (fed 30 mg supplemental vitamin E/kg), this degree of heat stress depressed egg production by about 30%. In the birds receiving the high level of vitamin E, egg production was maintained at levels very close to those prior to the heat stress. The objective of this experiment was to confirm in a larger scale the effects of high levels of dietary vitamin E on egg production of hens exposed to a chronic heat stress and during a period of recovery at thermoneutral temperatures.

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