Egg production response of laying chickens to feather clipping, cool water and aspirin during hot weather conditions

Chickens are very sensitive to environmental temperature. Their growth, egg production and health are severely affected during extremes of weather conditions. Therefore, within the economically feasible limits, optimum temperature has to be provided to the poultry birds, in order to obtain optimal growth rate and returns from the farming entity. During the summer season, the chickens will need more special attention. Chickens have a much higher body temperature than other animals and humans. The average body temperature for a chicken normally will run at 102-103 °F. Their heart rate is normally 280-315 beats per minute. Another fact is a rooster will take around 18-20 breaths per minute while a hen has 30-35 breaths per minute. The average life span for an egg laying chicken is around 5-8 years for large breeds such as your Rhode Island Red’s but have been known to live 20 years while broiler meat purpose birds only live up to 1-3 years. The summer heat can create more problems for chickens than cold weather. It’s easy to see they are insulated well with many feathers. Chickens fluff up their feathers as many birds will do which traps air between the layers which keep them warm during cold weather. In hot weather they seek out shade. They lay down and spread their wings and bodies out to cool down. However, the provision of cold drinking water can ameliorate huge amount of stress from the chickens.

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Responses of broiler chicken to different oil levels within constant energy levels from 20 to 40 days of age under hot weather conditions

Italian Journal of Animal Science ◽

10.1080/1828051x.2021.1906169 ◽

2021 ◽

Vol 20 (1) ◽

pp. 664-676

Author(s):

Youssef A. Attia ◽

Mohammed A. Al-Harthi ◽

Saber Sh. Hassan

Keyword(s):

Broiler Chicken ◽

Energy Levels ◽

Weather Conditions ◽

Constant Energy ◽

Hot Weather

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Indoor Air Quality (IAQ): Accuracy of Natural Ventilation for Temperature, Air Flow Rate and Relative Humidity (RH) in School Building Classrooms

International Journal of Engineering & Technology ◽

10.14419/ijet.v7i3.9.15271 ◽

2018 ◽

Vol 7 (3.9) ◽

pp. 42

Author(s):

Norsafiah Norazman ◽

Adi Irfan Che Ani ◽

Nor Haslina Ja’afar ◽

Muhamad Azry Khoiry

Keyword(s):

Air Quality ◽

Relative Humidity ◽

Indoor Air Quality ◽

Indoor Air ◽

Natural Ventilation ◽

Air Flow ◽

Weather Conditions ◽

Potential Health ◽

The Hours ◽

Hot Weather

Indoor Air Quality (IAQ) is an essential matter in achieving students’ satisfaction for the learning process. Building’s orientation is a factor that may encourage sufficient natural ventilation for the classroom occupants. Inadequate ventilation is an issue for most existing classrooms. The purpose of this paper is to analyze the accuracy of natural ventilation in classrooms. Therefore, experimental on 20 classrooms has been conducted by using Multipurpose Meter at secondary school buildings in Malaysia. The findings indicated that the accuracy of natural ventilation testing was below the permissible limits throughout the hours monitored, thus this may cause potential health hazards to the students. Temperature and air flow rates were lower than 23 °C and 0.15 m/s respectively, it fulfilled the basic requirements as a standard learning environment. However, measurements taken showed the overall relative humidity (RH) in the classrooms can be categorized as acceptable with 40% to 70% range. On the basis of these findings, it is evident that naturally ventilated classrooms are important especially due to energy efficiency, whereas mechanical ventilation should only be installed as an alternative under extremely hot weather conditions.

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Fresh, Durability and Mechanical Behavior of Self Consolidating Concrete Incorporating Fly Ash and Admixture under Hot Weather

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.904.453 ◽

2021 ◽

Vol 904 ◽

pp. 453-457

Author(s):

Samer Al Martini ◽

Reem Sabouni ◽

Abdel Rahman Magdy El-Sheikh

Keyword(s):

Compressive Strength ◽

Fly Ash ◽

Water Absorption ◽

Weather Conditions ◽

Chloride Penetration ◽

The Self ◽

Fresh Properties ◽

Self Consolidating Concrete ◽

Slump Flow ◽

Hot Weather

The self-consolidating concrete (SCC) become the material of choice by concrete industry due to its superior properties. However, these properties need to be verified under hot weather conditions. The paper investigates the behavior of SCC under hot weather. Six SCC mixtures were prepared under high temperatures. The SCC mixtures incorporated polycarboxylate admixture at different dosages and prolonged mixed for up to 2 hours at 30 °C and 40 °C. The cement paste was replaced with 20% of fly ash (FA). The fresh properties were investigated using slump flow, T50, and VSI tests. The compressive strength was measured at 3, 7, and 28 days. The durability of SCC mixtures was evaluated by conducting rapid chloride penetration and water absorption tests.

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Motivation for Heat Adaption: How Perception and Exposure Affect Individual Behaviors During Hot Weather in Knoxville, Tennessee

Atmosphere ◽

10.3390/atmos10100591 ◽

2019 ◽

Vol 10 (10) ◽

pp. 591 ◽

Cited By ~ 1

Author(s):

Alisa L. Hass ◽

Kelsey N. Ellis

Keyword(s):

Health Effects ◽

Air Conditioning ◽

Public Perception ◽

Heat Exposure ◽

Weather Conditions ◽

Health Issues ◽

Excessive Heat ◽

Normal Behavior ◽

Hot Weather ◽

Heat Vulnerability

Heat is the deadliest meteorological hazard; however, those exposed to heat often do not feel they are in danger of heat-health effects and do not take precautions to avoid heat exposure. Socioeconomic factors, such as the high cost of running air conditioning, might prevent people from taking adaption measures. We assessed via a mixed-methods survey how residents of urban Knoxville, Tennessee, (n = 86) describe and interpret their personal vulnerability during hot weather. Thematic analyses reveal that many respondents describe uncomfortably hot weather based on its consequences, such as health effects and the need to change normal behavior, which misaligns with traditional heat-communication measures using specific weather conditions. Only 55% of those who perceived excessive heat as dangerous cited health as a cause for concern. Respondents who have experienced health issues during hot weather were more likely to perceive heat as dangerous and take actions to reduce heat exposure. Social cohesion was not a chief concern for our respondents, even though it has been connected to reducing time-delayed heat-health effects. Results support using thematic analyses, an underutilized tool in climatology research, to improve understanding of public perception of atmospheric hazards. We recommend a multi-faceted approach to addressing heat vulnerability.

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Proportioning RCCP mixes under hot weather conditions for a specified tensile strength

Cement and Concrete Research ◽

10.1016/j.cemconres.2004.04.030 ◽

2005 ◽

Vol 35 (2) ◽

pp. 267-276 ◽

Cited By ~ 7

Author(s):

Hisham Y. Qasrawi ◽

Ibrahim M. Asi ◽

H.I.Al-Abdul Wahhab

Keyword(s):

Tensile Strength ◽

Weather Conditions ◽

Hot Weather

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

Australian Journal of Experimental Agriculture ◽

10.1071/ea9960269 ◽

1996 ◽

Vol 36 (3) ◽

pp. 269 ◽

Cited By ~ 19

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.

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XI.—An Investigation into the Effects of Seasonal Changes on Body Temperature

Proceedings of the Royal Society of Edinburgh ◽

10.1017/s0370164600012815 ◽

1913 ◽

Vol 32 ◽

pp. 110-135 ◽

Cited By ~ 5

Author(s):

Sutherland Simpson

Keyword(s):

Body Temperature ◽

Rectal Temperature ◽

Egg Production ◽

Weather Conditions ◽

Barometric Pressure ◽

Temperature Curve ◽

The Body ◽

The Mean ◽

One Year ◽

June July

SummaryMonthly observations, extending over one year, were made on the rectal temperature of 114 domestic fowls (Gallus gallus, ♀) and records from forty-one of these were obtained for two years. Six different breeds were used, each located in a separate pen, all under similar conditions, and the mean temperatures for each group were plotted out to form an annual temperature curve. It was found that—1. The lowest temperatures occur in December, January, and February, and the highest in June, July, and August, corresponding in a general way with the temperature of the external air.2. Barometric pressure does not appear to have any influence on the body temperature of the hen.3. The curve of egg-production does not coincide with the annual temperature curve, the former reaching its highest level in April and May, the latter in June, July, and August.If we compare the mean rectal temperature at two periods of the year when the external or weather conditions are approximately the same (April-May and September-October), but when the vitality of the birds, as indicated by the curve of egg-production, moulting, etc., is at a maximum and minimum respectively, we find that the figures are practically identical. This would seem to show that cyclical bodily changes have little effect on body temperature as compared with outside influences.

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