Melatonin and cashmere growth in Inner Mongolian cashmere goats

Duan, Chunhui; Xu, Jing; Zhang, Yu; Zhang, Jia; Zhang, Wei

doi:10.1139/cjas-2015-0018

Cited by 11 publications

(20 citation statements)

References 14 publications

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“…The average yield and length of cashmere in melatonin-treated goats was greater than that of the control with a 23.4% and 19.8% increase (p < 0.01). These results are consistent with findings of Duan et al (2015Duan et al ( , 2016.…”

Section: Resultssupporting

confidence: 93%

“…This finding is in line with the results from studies of Duan et al (2015Duan et al ( , 2016, suggesting that other factors may also be responsible for the increased cashmere yield induced by melatonin. Further analysis of cashmere samples revealed that the density of cashmere in treatment was significantly increased by 11.4% (p = 0.01).…”

Section: Resultssupporting

confidence: 90%

“…It would confirm previous results where melatonin treatment of half-sib cashmere goats significantly decreased the fiber diameter of cashmere by 4.1% (Duan et al, 2015). However, these results contradict another prior study in which melatonin implantation of non-half-sib female goats had no effect on the diameter of cashmere fiber (Duan et al, 2016). Other studies have indicated that melatonin treatment did not affect the fiber diameter of Inner Mongolian cashmere goats (Yue et al, 2007;Chang, 2010) and the reason could be that the sample size for each group, in the current study, was 75 which is much larger than the sample size (n ≤ 10) of those studies.…”

Section: Resultssupporting

confidence: 81%

“…On April 30 and June 30, 2014, melatonin microcapsules (Beijing Kangtai Biological Technology Company, Beijing, China) were subcutaneously implanted at the base of one ear of goats in the treatment group. The melatonin dosage (2 mg/kg BW) was based on the prior works of Duan et al (2015Duan et al ( , 2016. Control goats received no treatment.…”

Section: Methodsmentioning

confidence: 99%

“…In recent investigations (Duan et al, 2015(Duan et al, , 2016, it has been found that the administration of exogenous melatonin during the non-growing period of cashmere growth (in late April and late June) altered the timing of the cashmere growth cycle by inducing earlier cashmere growth. When non-half-sib female goats were implanted with melatonin in late April and June, the yield of cashmere and length of cashmere fiber were increased by 20.3% and 15.7% while melatonin implantation in June alone had no effect.…”

Section: Introductionmentioning

confidence: 99%

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Short communication: Melatonin implantation during the non-growing period of cashmere increases the cashmere yield of female Inner Mongolian cashmere goats by increasing fiber length and density

Duan

et al. 2018

Span. j. agric. res.

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This study aimed to evaluate if melatonin implantation at the end of April and June was able to increase cashmere production in female Inner Mongolian cashmere goats and to search for contributing factors accounting for the melatonin increasing in cashmere production. One hundred and fifty female Inner Mongolian cashmere goats (initial body weight 37.2 ± 3.3 kg) were randomly assigned to either a control (n=75) or a treatment (n=75) group. Goats in the treatment group were implanted with melatonin (2 mg/kg of body weight) on April 30 and June 30, 2014 while goats in the control received no treatment. Melatonin implantation increased cashmere yield by 23.4% while increasing the length and density of the cashmere fiber by 19.8% and 11.4%, whereas it decreased cashmere fiber diameter by 4.4%. Melatonin treatment had no effect on doe growth, litter size or birth and weaning weights of kid. Melatonin implantation promoted cashmere yield by increasing fiber length and density without impacting the performance of goats and their offspring. Therefore, melatonin implantation during the cashmere non-growing period (late April and June) is an effective way to increase cashmere yield and improve cashmere characteristics of goats.Additional keywords: cashmere goats; cashmere yield; fiber length; fiber density; melatonin.

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Section: Resultssupporting

confidence: 93%

Section: Resultssupporting

confidence: 90%

Section: Resultssupporting

confidence: 81%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Short communication: Melatonin implantation during the non-growing period of cashmere increases the cashmere yield of female Inner Mongolian cashmere goats by increasing fiber length and density

Duan

et al. 2018

Span. j. agric. res.

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Effects of melatonin administration to cashmere goats on cashmere production and hair follicle characteristics in two consecutive cashmere growth cycles

Yang

Duan

et al. 2021

Domestic Animal Endocrinology

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Effect of melatonin administration to lactating cashmere goats on milk production of dams and on hair follicle development in their offspring

Yang

et al. 2020

Animal

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Melatonin treatment in adult cashmere goats can increase cashmere yield and improve cashmere fibre quality by inducing cashmere growth during cashmere non-growth period, of which time cashmere goats are in the mid and late stages of lactation. However, whether melatonin treatment in adult cashmere goats affects their offspring’s growth performance remains unknown. Therefore, the objectives of the current study were to determine the effects of melatonin treatment in adult cashmere goats on cashmere and milk production performance in dams and on hair follicle development and subsequent cashmere production in their offspring. Twenty-four lactating Inner Mongolian Cashmere goat dams (50 ± 2 days in milk, mean ± SD) and their single-born female offspring (50 ± 2 days old, mean ± SD) were randomly assigned to one of two groups supplemented with melatonin implants (MEL; n = 12) or without (CON; n = 12). The melatonin implants were subcutaneously implanted behind the ear at a dose of 2 mg/kg live weight on two occasions – 30 April and 30 June 2016. The results demonstrated that melatonin treatment in adult cashmere goats increased cashmere production and improved cashmere fibre quality as indicated by greater cashmere yield, longer cashmere fibre staple length, finer cashmere fibre diameter and thicker cashmere fibre density. The milk fat content was higher in MEL compared with CON cashmere goats. The daily yields of milk production, milk protein and milk lactose were lower in MEL compared with CON cashmere goats. Serum melatonin concentrations were greater, serum prolactin concentrations were lower and milk melatonin concentrations and yields were greater in MEL compared with CON cashmere goats. With regard to offspring, there were no differences in cashmere yield, fibre staple length, fibre diameter and fibre density at yearling combing, and the primary and secondary hair follicles population and maturation between treatments. In conclusion, melatonin treatment in adult cashmere goats during cashmere non-growth period is a practical and an effective way in cashmere industry as indicated by not only increasing cashmere yield and improving cashmere fibre quality in adult cashmere goat dams but also having no impairment in hair follicle development and the subsequent cashmere production in their single-born offspring.

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Melatonin and cashmere growth in Inner Mongolian cashmere goats

Abstract: The aim of the study was to investigate the effects of melatonin implants on cashmere growth and productive performance of cashmere goats.

Cited by 11 publications

References 14 publications

Short communication: Melatonin implantation during the non-growing period of cashmere increases the cashmere yield of female Inner Mongolian cashmere goats by increasing fiber length and density

Short communication: Melatonin implantation during the non-growing period of cashmere increases the cashmere yield of female Inner Mongolian cashmere goats by increasing fiber length and density

Effects of melatonin administration to cashmere goats on cashmere production and hair follicle characteristics in two consecutive cashmere growth cycles

Effect of melatonin administration to lactating cashmere goats on milk production of dams and on hair follicle development in their offspring

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