Testosterone and Triiodothyronine in Franklin's Gull (Leucophaeus pipixcan) Eggs

boertje, ethan t.; snyder, nicole m.; Reed, Wendy L.; Kittilson, Jeffrey D.; Clark, Mark E.

doi:10.1675/063.042.0301

Cited by 2 publications

(1 citation statement)

References 41 publications

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“…The growth of male chickens involves various factors and hormones, including testosterone and TH (Boertje et al, 2019). These two hormones support growth.…”

Section: Introductionmentioning

confidence: 99%

Investigation of single nucleotide polymorphism in TSH-β and CaSR associated with body weight in Korean native chickens (Gray Brown)

et al. 2021

J Anim Reprod Biotechnol

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This study identified single nucleotide polymorphisms (SNPs) that affect the body weight of chickens. Analysis of body weight showed that the Cornish breed had the highest body weight, and the Korean native chicken (Gray Brown) had the lowest body weight. TSH is composed of an α-subunit and a β-subunit, and the TSH-β gene encoding the β-subunit has been reported to be associated with obesity. In chickens, it is located on chromosome 26 and is reported to be associated with growth. The calcium-sensing receptor gene (CaSR) plays a role in the regulation of extracellular calcium homeostasis and is responsible for calcium absorption in the urinary tract, which affects the eggshell quality in poultry. It was shown that TSH-β was strongly correlated with weight in Cornish and Korean native (Gray Brown) chickens, particularly in those with the CC trait. However, CaSR showed no association with body weight in poultry; it was associated with calcium and the eggshell. Thus, selection for TSH-β can be used to produce individuals with more favorable traits in terms of body weight.

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“…The growth of male chickens involves various factors and hormones, including testosterone and TH (Boertje et al, 2019). These two hormones support growth.…”

Section: Introductionmentioning

confidence: 99%

Investigation of single nucleotide polymorphism in TSH-β and CaSR associated with body weight in Korean native chickens (Gray Brown)

et al. 2021

J Anim Reprod Biotechnol

View full text Add to dashboard Cite

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Profile of thyroid hormone in male Layer chickens given by testosterone

Yuneldi

Airin

Saragih

et al. 2021

IOP Conf. Ser.: Earth Environ. Sci.

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The aim of the study was to evaluate the administration of Testosterone toward growth, levels of Triiodothyronine (T3) and Thyroxine (T4) in male Layer chicken. Forty male Layer chickens strain Isa Brown was used in this study. Chickens were divided into 2 groups, control and treatment groups (given commercial testosterone) at a dose of 3 mg/kg body weight/day for 5 weeks. The results showed the growth of chickens treated by Testosterone increased significantly from week 1 to week 5 with a range between 59.43 ± 0.76 grams to 332.50 ± 0.79 grams, (P < 0.05). However, due to treatment differences, the results obtained that the administration of Testosterone cannot accelerate the growth of male Layer chickens (P > 0.05). Even in the week 3 and week 4, the growth rate is lower than the control. The levels reduction of T3 start from 4.91 ± 0.98 ng/mL to 1.38 ± 0.09 ng/mL, while T4 levels start from 1.01 ± 0.85 ug/mL to 0.84 ± 0.21 ug/mL. It could be concluded that the administration of testosterone can reduce T3 and T4 levels but cannot accelerate the growth rate of male Layer chickens.

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Testosterone and Triiodothyronine in Franklin's Gull (Leucophaeus pipixcan) Eggs

Abstract: BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access titles in the biological, ecological, and environmental sciences published by nonprofit societies, associations, museums, institutions, and presses.

Cited by 2 publications

References 41 publications

Investigation of single nucleotide polymorphism in TSH-β and CaSR associated with body weight in Korean native chickens (Gray Brown)

Investigation of single nucleotide polymorphism in TSH-β and CaSR associated with body weight in Korean native chickens (Gray Brown)

Profile of thyroid hormone in male Layer chickens given by testosterone

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