Effects of different light durations during incubation on hatching, subsequent growth, welfare, and meat quality traits among three broiler strains

Yameen, Rao Muhammad Kashif; Hussain, Jibran; Mahmud, Athar; Saima, .

doi:10.1007/s11250-020-02401-8

Cited by 16 publications

(5 citation statements)

References 40 publications

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“…Our results show that incubation of the egg under light significantly increased post-hatch blood glucose concentration as compared with the post-hatch blood concentrations of chicks hatched from eggs incubated in darkness. Even though the species of animal, application, and intensity of lightning are different our results are rare partly in agreement with the results of Yameen et al (2020). In this study, our expectation was to see increases in the diameter of seminiferous tubules and related increases in the number of Sertoli cells by light application.…”

Section: Discussionsupporting

confidence: 90%

“…In a study, broiler eggs were incubated under darkness, under 12 h of lightness, and under 24 h of lightness. Blood glucose concentrations, post-hatch, were significantly increased under 12 and 24 h of lightness as compared with eggs incubated in the dark (Yameen et al, 2020). Our results show that incubation of the egg under light significantly increased post-hatch blood glucose concentration as compared with the post-hatch blood concentrations of chicks hatched from eggs incubated in darkness.…”

Section: Discussionmentioning

confidence: 48%

“…It was reported that blood glucose concentration (mmol/L) was increased by 12 h and 24 h lightness as compared to eggs incubated in darkness. The glucose concentration in the 24 h lighting group was also significantly high over the 12 h lighting group (Yameen et al, 2020).…”

Section: Measurements Of Diameter Of Seminiferous Tubules and The Num...mentioning

confidence: 82%

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Exposing hatching quail eggs to high light intensity and its effect on post-hatch testicular histology

Çiftçi

Coşkun

Aygün

2022

Tavukçuluk Araştırma Dergisi

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The objective of this study was to monitor the effect of exposing hatching quail eggs to high light intensity on testicular function Quail eggs were distributed into four groups; dark application during the 18-day incubation period (C), light application during the 18-day incubation period (L), 5 days of light + 13 days of darkness (5L), and 5 days of darkness + 13 days of light (5K) and incubated. After the hatch, 40 chicks were selected from each group and placed in rearing cages. On day 42 after hatching the quails were weighed and their testes were removed and then embedded in paraffin. The blood glucose level of the 5K group was higher than the blood glucose level of the L group, but there was no statistically important difference (P<0.05) between the L, C, and 5L groups. The diameters of seminiferous tubules were bigger in the 5L group as compared with the L group. The groups treated with light had bigger tubule diameters than the control group. The number of Sertoli cells was significantly lower in the C group. Incubating quail eggs under five days of darkness and thirteen days of light have a favorable effect on post-hatch male fertility potential

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 48%

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Exposing hatching quail eggs to high light intensity and its effect on post-hatch testicular histology

Çiftçi

Coşkun

Aygün

2022

Tavukçuluk Araştırma Dergisi

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“…Since melatonin modulates immune responses in poultry (Markowska et al, 2017), the effect of lighted incubation on broiler immunity has also been studied. Both 12L:12D or 24L:0D white LED (5,000 K) lighting with 250 lux intensity significantly increases NDV titers and spleen weights of 35 days old Hubbard broilers compared to dark incubation (Yameen et al, 2020). A stronger humoral immune response to keyhole limpet hemocyanin (KLH), which is a non-pathogenic protein antigen and often used to assess humoral immunity, was reported in broilers compared to dark incubation when eggs were exposed to a 12L:12D white fluorescent light (Archer and Mench, 2013).…”

Section: Effects Of Light On Embryo Development and Post-hatching Growthmentioning

confidence: 97%

Incubation Temperature and Lighting: Effect on Embryonic Development, Post-Hatch Growth, and Adaptive Response

2022

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During incubation, the content of the egg is converted into a chick. This process is controlled by incubation conditions, which must meet the requirements of the chick embryo to obtain the best chick quality and maximum hatchability. Incubation temperature and light are the two main factors influencing embryo development and post-hatch performance. Because chicken embryos are poikilothermic, embryo metabolic development relies on the incubation temperature, which influences the use of egg nutrients and embryo development. Incubation temperature ranging between 37 and 38°C (typically 37.5–37.8°C) optimizes hatchability. However, the temperature inside the egg called “embryo temperature” is not equal to the incubator air temperature. Moreover, embryo temperature is not constant, depending on the balance between embryonic heat production and heat transfer between the eggshell and its environment. Recently, many studies have been conducted on eggshell and/or incubation temperature to meet the needs of the embryo and to understand the embryonic requirements. Numerous studies have also demonstrated that cyclic increases in incubation temperature during the critical period of incubation could induce adaptive responses and increase the thermotolerance of chickens without affecting hatchability. Although the commercial incubation procedure does not have a constant lighting component, light during incubation can modify embryo development, physiology, and post-hatch behavior indicated by lowering stress responses and fearful behavior and improving spatial abilities and cognitive functions of chicken. Light-induced changes may be attributed to hemispheric lateralization and the entrainment of circadian rhythms in the embryo before the hatching. There is also evidence that light affects embryonic melatonin rhythms associated with body temperature regulation. The authors’ preliminary findings suggest that combining light and cyclic higher eggshell temperatures during incubation increases pineal aralkylamine N-acetyltransferase, which is a rate-limiting enzyme for melatonin hormone production. Therefore, combining light and thermal manipulation during the incubation could be a new approach to improve the resistance of broilers to heat stress. This review aims to provide an overview of studies investigating temperature and light manipulations to improve embryonic development, post-hatch growth, and adaptive stress response in chickens.

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“…On the contrary, both continuous and intermittent duration had similarly been demonstrated to reduce post-hatch feed intake over dark incubation. Interestingly, continuous lighting during incubation had been shown to significantly reduce post-hatch weight gain in contrast to dark incubation and non-continuous ( Yameen et al, 2020 ). Riaz et al (2021) highlighted that FCR was significantly better under intermittent photo-incubation over continuous or dark incubation.…”

Section: Lightmentioning

confidence: 99%

Chicken Incubation Conditions: Role in Embryo Development, Physiology and Adaptation to the Post-Hatch Environment

et al. 2022

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The chicken hatching egg is a self-contained life-supporting system for the developing embryo. However, the post-hatch performance of birds depends on several factors, including the breeder management and age, egg storage conditions and duration before incubation, and the incubation conditions. Studies have determined the effect of incubation factors on chick post-hatch growth potential. Therefore, chick physical quality at hatch is receiving increasing attention. Indeed, although incubation temperature, humidity, turning and ventilation are widely investigated, the effects of several variables such as exposure of the embryo to high or low levels, time of exposure, the amplitude of variations and stage exposures on embryo development and post-hatch performance remain poorly understood. This review paper focuses on chick quality and post-hatch performance as affected by incubation conditions. Also, chick physical quality parameters are discussed in the context of the parameters for determining chick quality and the factors that may affect it. These include incubation factors such as relative humidity, temperature, turning requirements, ventilation, in ovo feeding and delay in feed access. All these factors affect chick embryo physiology and development trajectory and consequently the quality of the hatched chicks and post-hatch performance. The potential application of adapted incubation conditions for improvement of post-hatch performance up to slaughter age is also discussed. It is concluded that incubation conditions affect embryo parameters and consequently post-hatch growth differentially according to exposure time and stage of exposure. Therefore, classical physical conditions are required to improve hatchability, chick quality and post-hatch growth.

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Effects of different light durations during incubation on hatching, subsequent growth, welfare, and meat quality traits among three broiler strains

Cited by 16 publications

References 40 publications

Exposing hatching quail eggs to high light intensity and its effect on post-hatch testicular histology

Exposing hatching quail eggs to high light intensity and its effect on post-hatch testicular histology

Incubation Temperature and Lighting: Effect on Embryonic Development, Post-Hatch Growth, and Adaptive Response

Chicken Incubation Conditions: Role in Embryo Development, Physiology and Adaptation to the Post-Hatch Environment

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