Quantitative trait loci mapping of innate fear behavior in day-old F2 chickens of Japanese Oh-Shamo and White Leghorn breeds using restriction site-associated DNA sequencing

Velasco, Vanessa Viterbo; Ochiai, Takayuki; Tsudzuki, Masaoki; Goto, Naoki; Ishikawa, Akira

doi:10.1016/j.psj.2023.103228

Cited by 3 publications

(2 citation statements)

References 42 publications

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“…Notably, the neuropeptide Y receptor Y5 (NPY5R) and LOC101749214 were pinpointed as candidate genes for the primary open field QTL on chromosome 4 [27]. Furthermore, in another F2 population of day-old chickens obtained from a cross between the OSM and WL breeds, we identified two QTLs for fear responses in the open field test on chromosomes 1 and 2 [28]. Importantly, the nine QTLs for the tonic immobility and open field tests identified in these two populations are all located in different genomic regions [26,28].…”

Section: Discussionmentioning

confidence: 91%

“…Furthermore, in another F2 population of day-old chickens obtained from a cross between the OSM and WL breeds, we identified two QTLs for fear responses in the open field test on chromosomes 1 and 2 [28]. Importantly, the nine QTLs for the tonic immobility and open field tests identified in these two populations are all located in different genomic regions [26,28]. This indicates that innate fear responses in the tonic immobility and open field tests are under distinct genetic controls and exhibit variations among breeds.…”

Section: Discussionmentioning

confidence: 98%

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New Behavioral Handling Test Reveals Temperament Differences in Native Japanese Chickens

Ishikawa,

Takanuma,

Hashimoto

et al. 2023

Animals

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It is well known in the poultry industry that fear and stress experienced during the handling of day-old chicks in commercial hatcheries can have long-lasting effects on their behavior later in life. These hatchery-related stresses are more intense and complex than those encountered in traditional behavioral tests. Consequently, a single behavioral test may not be sufficient to measure hatchery stresses and chicken temperament. In this study, we developed a new behavioral handling test for day-old chickens, which incorporated concepts from established behavioral tests used with both young and adult birds. The new test assessed 10 behavioral traits, including vocalization frequency and responses to human interaction. It was conducted on 96 two-day-old chicks from seven breeds of native Japanese and Western chickens. The results of the principal component analysis classified chicken temperaments into three distinct categories: bustle, aggression, and timidity. Using these categories, the seven breeds were classified into five groups, each with distinct temperaments. This study highlights the reliability and value of the new handling test in characterizing the temperaments of various chicken breeds and provides insights into the complex behaviors of chickens.

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Section: Discussionmentioning

confidence: 91%

Section: Discussionmentioning

confidence: 98%

New Behavioral Handling Test Reveals Temperament Differences in Native Japanese Chickens

Ishikawa,

Takanuma,

Hashimoto

et al. 2023

Animals

Self Cite

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Association between Temperament and Stress-related Gene Expression in Day-old Chickens

Ishikawa,

Takanuma,

Hashimoto

et al. 2024

J. Poult. Sci.

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Genetic Diversity, Runs of Homozygosity, and Selection Signatures in Native Japanese Chickens: Insights from Single-Nucleotide Polymorphisms

Velasco,

Tsudzuki,

Hashimoto

et al. 2024

Animals

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Understanding genetic diversity, runs of homozygosity (ROH), and selection signatures is critical for the conservation and breeding management of native Japanese chickens. In this study, genetic diversity, ROH, and selection signatures in 11 populations of seven native Japanese breeds and three foreign breeds with different genetic and behavioral backgrounds were investigated using 11,493 SNPs identified through restriction-site-associated DNA sequencing. The Oh-Shamo (OSM), an aggressive cockfighting breed, exhibited the highest genetic diversity. Six native Japanese breeds, Ingie (IG), Ryujin-Jidori (RYU), Tosa-Jidori (TJI), Tosa-Kukin (TKU), Nagoya (NAG), and Ukkokei (UK), showed intermediate levels of genetic diversity and ROH. Population analyses grouped the 11 populations into four distinct clusters: (1) five populations comprising three foreign breeds (the Fayoumi inbred line, closed-colony G line of White Leghorn, commercial T line of WL, and White Plymouth Rock) and the IG Japanese breed; (2) OSM and two old Jidori breeds (RYU and TJI); (3) TKU and UK; and (4) the meat-type Nagoya breed. ROH and Fst analyses identified seven SNPs on chromosomes 13, 17, 20, 24, and 26, five of which were candidate genetic variants for fear-related behavior. These findings provide insights into genetic diversity and conserved genomic segments valuable for breeding and conservation in Japanese chicken breeds.

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Quantitative trait loci mapping of innate fear behavior in day-old F2 chickens of Japanese Oh-Shamo and White Leghorn breeds using restriction site-associated DNA sequencing

Cited by 3 publications

References 42 publications

New Behavioral Handling Test Reveals Temperament Differences in Native Japanese Chickens

New Behavioral Handling Test Reveals Temperament Differences in Native Japanese Chickens

Association between Temperament and Stress-related Gene Expression in Day-old Chickens

Genetic Diversity, Runs of Homozygosity, and Selection Signatures in Native Japanese Chickens: Insights from Single-Nucleotide Polymorphisms

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