Effects of year and sampling site on mean fibre diameter of Alashan cashmere goat

Antonini, Marco; Wang, Jun; Lou, Yujie; Peirong, Tang; Renieri, Carlo; Pazzaglia, Irene; Valbonesi, Alessandro

doi:10.1016/j.smallrumres.2016.03.011

Cited by 7 publications

(3 citation statements)

References 8 publications

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“…The results of this investigation indicated a strong and significant effect of location, age, sex on length whereas there is no significant different on diameter of cashmere fiber. Earlier research has shown significant difference on fiber diameter by goat body areas shown (Antonini et al 2016, Tuncer 2018) but the present study had shown significant difference in Chyangra goat only on fiber length whereas the fiber diameter did not have any effect of any factors.…”

Section: Discussioncontrasting

confidence: 80%

Qualitative characteristics of cashmere fiber of Chyangra goat of Nepal

Gorkhali,

Paudel,

Basnet

et al. 2023

J. Nep. Agric. Res. Counc.

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This study assesses the different physical characteristics of cashmere fiber quality in Chyangra goats as wax percentage, length of pashmina fiber, fineness (diameter) of fiber obtained from different body parts (neck, belly, and back) in different locations of Mustang district of Nepal. In mid-March to mid-April 2022, cashmere samples were collected from thirty-four unrelated animals. Twenty-two animals were sampled from Upper Mustang and twelve were sampled from Lower Mustang; of which, 22 were male and 12 were female of 1, 2, 3, 4, and greater than 4 years of age. Cashmere fiber length was measured using measuring pad and ruler and fiber diameter was analyzed using the optical projection microscope method. The fixed effect model was used to analyze the least square mean for fiber length, diameter and wax percentage of Chyangra cashmere fiber considering various factors such as location, sex and age. The overall least square mean and standard error for fiber quality parameters namely wax percentage, fiber length and fiber diameter were 9.49±2.2%, 45.97±0.14 mm and 15.36±0.19 µm respectively. Even though there is a significant difference in the considered parameters by location, the fineness and length of the fiber of both locations was within the finest fiber ranging from 13-16 µm diameter and more than 40 mm length. The present study has evidenced that Chyangra goat of Nepal can be characterized as one of the finest Cashmere goats however some management steps must be taken to improve the quality (cleanliness) of fiber and the volume of fiber production. Significant differences were found in location, sex, and trend of difference in age of the animals indicating the potential to improve cashmere quality by adopting proper management and selection methods through selection of goats with larger body size and confirmation to obtain more quantity of fiber per animal.

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Section: Discussioncontrasting

confidence: 80%

Qualitative characteristics of cashmere fiber of Chyangra goat of Nepal

Gorkhali,

Paudel,

Basnet

et al. 2023

J. Nep. Agric. Res. Counc.

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“…Cashmere is an important production trait of goats with a long history of artificial selection during domestication; it is possible that decreasing temperatures motivated an increase in artificial selection for cashmere production in the cooler northern parts of China [ 21 ]. In previous research, studies on cashmere traits of cashmere goats mainly focus on phenotypic detection [ 22 ], genome-wide association studies [ 23 ], selection signal analysis [ 24 ] and skin transcriptome analysis [ 25 ]. However, there are limited reports on integrating multi-omics data to study cashmere traits, especially using comparative genomics.…”

Section: Introductionmentioning

confidence: 99%

Convergent Genomic Signatures of Cashmere Traits: Evidence for Natural and Artificial Selection

Wang

Xie

et al. 2023

IJMS

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Convergent evolution provides powerful opportunities to investigate the genetic basis of complex traits. The Tibetan antelope (Pantholops hodgsonii) and Siberian ibex (Capra sibirica) belong to different subfamilies in Bovidae, but both have evolved similar superfine cashmere characteristics to meet the cold temperature in plateau environments. The cashmere traits of cashmere goats underwent strong artificial selection, and some traces of domestication also remained in the genome. Hence, we investigated the convergent genomic signatures of cashmere traits between natural and artificial selection. We compared the patterns of convergent molecular evolution between Tibetan antelope and Siberian ibex by testing positively selected genes, rapidly evolving genes and convergent amino acid substitutions. In addition, we analyzed the selected genomic features of cashmere goats under artificial selection using whole-genome resequencing data, and skin transcriptome data of cashmere goats were also used to focus on the genes involved in regulating cashmere traits. We found that molecular convergent events were very rare, but natural and artificial selection genes were convergent enriched in similar functional pathways (e.g., ECM-receptor interaction, focal adhesion, PI3K-Akt signaling pathway) in a variety of gene sets. Type IV collagen family genes (COL4A2, COL4A4, COL4A5, COL6A5, COL6A6) and integrin family genes (ITGA2, ITGA4, ITGA9, ITGB8) may be important candidate genes for cashmere formation and development. Our results provide a comprehensive approach and perspective for exploring cashmere traits and offer a valuable reference for subsequent in-depth research on the molecular mechanisms regulating cashmere development and fineness.

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“…Goats are one of the most adaptive livestock species in the world [1] and cashmere goats are the most important goat breed due to the high yield and fineness of the fibers that they produce [2]. China is by far the largest producer of cashmere [3]. The histologic skin structure of the cashmere goat shows two different types of hair follicle (HF): a primary HF that produces guard hair and a secondary HF that gives rise to cashmere hair [4].…”

Section: Introductionmentioning

confidence: 99%

PDGFA in Cashmere Goat: A Motivation for the Hair Follicle Stem Cells to Activate

Pazzaglia

Mercati

Antonini

et al. 2019

Animals

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The cashmere hair follicle (HF) perpetually goes through cycles of growth, involution and rest. The photoperiod is the main factor in the control of seasonal coat change in cashmere goats while stem cells play a crucial role in the HF growth. Several factors, including Platelet-Derived Growth Factor A (PDGFA), Bone Morphogenetic Protein 2 (BMP2) and Lim-Homeobox gene 2 (LHX2) are implicated in HF morphogenesis and cycle. In this work, the mentioned molecules were investigated to evaluate their role in follicular cycle activation. The study was performed on skin samples collected at different periods of HF cycle and the molecular expression of PDGFA, BMP2 and LHX2 was evaluated by Real-Time PCR (qPCR) at each time point. Since PDGFA showed the most variation, the goat PDGFA gene was sequenced and the protein localization was investigated by immunohistochemistry together with PDGF receptor α (PDGFRα). PDGFA immunostaining was observed in the basal layer of the HF outer root sheath and the immunoreaction appeared stronger in the regressive HFs compared to those in the anagen phase according to qPCR analysis. PDGFRα was observed in the HF epithelium, proving the effect of PDGFA on the follicular structure. The data obtained suggest that PDGFA and BMP2 are both implicated in HF cycle in goat. In particular, PDGFA secreted by the HF is involved in the anagen activation.

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Effects of year and sampling site on mean fibre diameter of Alashan cashmere goat

Cited by 7 publications

References 8 publications

Qualitative characteristics of cashmere fiber of Chyangra goat of Nepal

Qualitative characteristics of cashmere fiber of Chyangra goat of Nepal

Convergent Genomic Signatures of Cashmere Traits: Evidence for Natural and Artificial Selection

PDGFA in Cashmere Goat: A Motivation for the Hair Follicle Stem Cells to Activate

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