Effects of Dark Rearing and Light Exposure on Memory for a Passive Avoidance Task in Day-Old Chicks

Song, Nan; Rose, Steven

doi:10.1006/nlme.1997.3788

Cited by 18 publications

(8 citation statements)

References 33 publications

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“…[8][9][10] Thus the brain ordinarily receives chemical, environmental, and psychological stress, which leads to decline of brain function. [11][12][13] It is well known that Aβ induces neuronal damage, leading to learning and memory impairment. Although the precise molecular mechanism has not been identified, Aβ-induced apoptotic neuronal cell death is believed to be one of the major reasons for failing memory.…”

Section: Introductionmentioning

confidence: 99%

Neuroprotection and Enhancement of Learning and Memory by BF-7

Kim

Kang

Lee

et al. 2005

JOURNAL OF HEALTH SCIENCE

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Section: Introductionmentioning

confidence: 99%

Neuroprotection and Enhancement of Learning and Memory by BF-7

Kim

Kang

Lee

et al. 2005

JOURNAL OF HEALTH SCIENCE

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“…The authors hypothesized that this was due to light exposure influencing lateralization of the brain, thereby decreasing the ability of the birds to discriminate between familiar and unfamiliar birds whom they would “explore” by pecking. Conversely, embryos incubated with a 12L:12D light schedule had better retention of a passive avoidance and discrimination task after hatch compared to dark-incubated only chicks (Sui and Rose, 1997 ). Occasional exposure to sounds in the incubation environment (15 min/h from d 10 to hatching), using both natural, species-specific noises and artificial noises (sitar music) increased hippocampal function (Chaudhury et al., 2009 ), which may facilitate learning and memory, and influenced postnatal auditory preferences (Jain et al., 2004 ); however, only high-decibel music (110 dB) positively modulated spatial orientation, learning, and memory when compared with noise (non-patterned or rhythmic) of the same decibel levels (Sanyal et al., 2013 ).…”

Section: Resultsmentioning

confidence: 99%

Early experiences matter: a review of the effects of prenatal environment on offspring characteristics in poultry

2016

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Early life experiences can be important in determining offspring phenotypes and may influence interaction with the environment and hence health, welfare, and productivity. The prenatal environment of poultry can be divided into the pre-lay environment and the egg storage/incubation environment, both of which can affect offspring outcomes. The ability to separate maternal and egg/incubation effects makes birds well suited to this type of research. There are many factors, including feeding and nutrition, environmental conditions, husbandry practices, housing system, social environment, infectious environment, and maternal health status, that can influence both the health and performance and behavior and cognition of the offspring. There are some aspects of the environments that can be changed to produce beneficial effects in the offspring, like addition of certain additives to feed or short changes in incubation temperatures, while other aspects should be avoided to reduce negative effects, such as unpredictable feeding and lighting regimens. Measures of offspring characteristics may prove to be a useful method of assessing parent stock welfare if known stressors result in predictable offspring outcomes. This has the advantage of assessing the parent environment without interfering with the animals and possibly affecting their responses and could lead to improved welfare for the animals.

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“…Domestic fowl chicks exposed to light during incubation have a different diurnal rhythm of feeding activity than dark-incubated chicks (Archer et al, 2009), and also differ from dark-incubated chicks in terms of discrimination learning ability (Rogers, 1990), memory retention for a passive avoidance task (Sui and Rose, 1997), and aspects of social behavior including social exploration, social recognition, and competitive success (Riedstra and Groothuis, 2004;Rogers and Workman, 1989). Chicks exposed to light during incubation also show more avoidance of an unfamiliar imprinting object than dark-incubated chicks during the first 12 hours post-hatch (Dimond, 1968).…”

Section: Introduction 80mentioning

confidence: 99%

Exposing avian embryos to light affects post-hatch anti-predator fear responses

Archer

Mench

2017

Applied Animal Behaviour Science

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Environmental stimuli present during incubation can impact the behavior of birds post-hatch. To determine the effect of exposing broiler chicken embryos to light on fearrelated behavior post-hatch, we conducted two experiments in which we incubated eggs under various light schedules, and then measured fear responses when the chickens (N = 720) were 3-6 wk of age. In Expt. 1, the incubation photoperiods were 0L:24D, 12L:12D, and 24L:0D, and tonic immobility (TI) and inversion (INV) tests were administered. In Expt. 2, the incubation photoperiods were 0L:24D, 1L:23D, 6L:18D, and 12L:12D; and an approach test (APPR) and an emergence (EMRG) test were administered in addition to TI and INV. In Expt. 1, both 12L:12D and 24L:0D had shorter latencies to right during TI (213.5 ± 23.7 and 231.8 ± 24.2 sec, respectively) than 0L:24D (305.5 ±26.1 sec) and also wing flapped less intensely during INV (12L:12D 5.0 ±0.1 wing flaps; 24L:0D 5.4 ±0.2) than 0L:24D (5.7 ±0.1). In Expt. 2, the 12L:12D birds once again had shorter latencies to right during TI (120.0 ±16.5 sec) and wing flapped less intensely during INV (4.7 ± 0.1 wing flaps) than 0L:24D (201.2 ± 24.9 and 5.5 ± 0.1, respectively). They also had shorter latencies to exit the dark box in EMRG (28.9 ±3.3 seconds), and were less active (28 ± 2%), vocalized less (178.8 ± 9.3 times/3min) and spent more time closer to the observer during APPR (63 ± 3%) than 0L:12D(42.9 ± 5.0 seconds, 35 ± 3%, 211.2 ± 10.4 times/3 min, 51 ± 3). The 1L:23D and 6L:18D showed some reductions in fearfulness compared to 0L:24D, but these were not consistent across tests. The 6L:18D and 12L:12D birds demonstrated lateralization in the direction to leave the box in EMRG, whereas 1L:23D and 0L:12D exited left or right at chance levels. The results of these experiments indicate that providing at 12 hours of light stimulation daily g embryogenesis results in long-term reductions in fearfulness as measured by multiple tests, and that this may be related to cerebral lateralization. In conjunction with other research, these findings show that light exposure during embryogenesis has important implications for behavioral phenotypes and welfare in chickens.

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Effects of Dark Rearing and Light Exposure on Memory for a Passive Avoidance Task in Day-Old Chicks

Cited by 18 publications

References 33 publications

Neuroprotection and Enhancement of Learning and Memory by BF-7

Neuroprotection and Enhancement of Learning and Memory by BF-7

Early experiences matter: a review of the effects of prenatal environment on offspring characteristics in poultry

Exposing avian embryos to light affects post-hatch anti-predator fear responses

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