In this study, SPSS17.0 software was used to analyze the wool fineness of 1079 Alxa Bactrian camels. The results showed that the wool fineness of male camel was significantly higher than that of female camel (P < 0.05). At the age of 2-7, the fluff fineness of male and female camel increased with age, At the age of 8-10 years, the fluff fineness of male and female camel has no obvious change trend with the increase of age. The best regression equation of male camel’s wool fineness to age is quadratic regression equation: Y=15.971+0.409X-0.008X2, the fitting degree is 0.983, the fitting effect is very good. The best regression equation of female camel’s wool fineness to age is also a quadratic regression equation: Y=15.597+0.564X-0.030X2, the fitting degree is 0.873, the fitting effect is better.
Short Communication · Volume 53, Issue 4, 8 June 2021 · Open Access
Study on Change of Wool Fineness with Age of Alxa Bactrian Camel
· · · · ·
Affiliations & Notes ⌄
- 1College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471023, China 2Institute of Animal, Alxa of Inner Mongolia, Bayanhaote 750306, China 3School of Life Sciences, Henan Universiry, Kaifeng 475000, China , * Corresponding author: byezi@163.com
- 2Wurenl223@vip.sina.corn
Article Info ⌄
- Journal:
- Pakistan Journal of Zoology
- Published:
- 8 June 2021
Abstract
Materials and methods
Alxa Bactrian camels 1079 in the experiment came from the left banner of Alashan, and the villi were sampled at the back of scapula on the side of the Bactrian camel. The collected fluff was placed on the black fluff board to select the fluff fiber with pointed tweezers and remove the coarse wool. The fineness of villi was measured by beion F6 fiber fineness analyzer. The main steps involved were as follows: The villi were cleared with alcohol, cut with scissors and placed on glass slides with ether. The glass slides were placed in the instrument for determination of fineness. SPSS17.0 software was used for regression analysis.
Results and discussion
Figure 1 shows the normal distribution of wool fineness of Alxa Bactrian camel. It can be seen that the average wool fineness of male camel is 17.510 μm, and that of female camel is 17.420 μm. The wool fineness of male camel is significantly higher than that of female camel (P < 0.05). Liu et al. (2009) showed that the average fineness of fine hair of Qinghai Bactrian camel was 16.32μm. Azha et al. (2012) showed that the wool fineness of Xinjiang Mulei Bactrian camel was between 15.63-16.15μm. Obviously, the wool fineness of Alxa Bactrian camel in this study is thicker than that of Qinghai Bactrian camel and Xinjiang Mulei long eyebrow Bactrian camel, which may be the difference between the varieties of Bactrian camel.
Figure 2 shows the change in trend of wool fineness with age of Alxa Bactrian camel. It can be seen that the
Table I. Regression equation between the wool fineness and age of Alxa Bactrian Camel.
| Sex | Model | Regression equation | Significance p value | Fitting degree (R2) |
| Male camel | Linear | Y=16.204+0.313X | 0.000 | 0.982 |
| Logerithmic | Y=15.432+1.581log(X) | 0.000 | 0.954 | |
| Quadratic | Y=15.971+0.409X-0.008X2 | 0.000 | 0.983 | |
| Cubic | Y=15.970+0.409X-0.008X2+8.838×10-6X3 | 0.000 | 0.979 | |
| Female camel | Linear | Y=16.484+0.201X | 0.001 | 0.784 |
| Logerithmic | Y=15.888+1.074log(X) | 0.000 | 0.871 | |
| Quadratic | Y=15.597+0.564X-0.030X2 | 0.001 | 0.873 | |
| Cubic | Y=15.687+0.504X-0.019X2+0.0006X3 | 0.005 | 0.848 |
measurement value of wool fineness of male camel is always higher than that of female camel during the period of 2-10 years old. In the period of 2-7 years old, the wool fineness of male and female camels increased with age. From 8 to 10 years old, the wool fineness of male camel increases slowly with the increase of age, while that of female camel did not.
Figure 3 and Table I show the regression curve and equation of the wool fineness to age of Alxa Bactrian camel, It can be seen that the best regression equation of male camel’s wool fineness to age is quadratic regression equation: Y=15.971+0.409X-0.008X2, the fitting degree is 0.983, the fitting effect is very good. The best regression equation of female camel’s wool fineness to age is quadratic regression equation: Y=15.597+0.564X-0.030X2, the fitting degree is 0.873, the fitting effect is better.
This study also showed that the fineness of the hair of Bactrian camel increased with the increase of age, especially after the age of 7, the fineness of the hair of Bactrian camel increased. Obviously, therefore, Bactrian camel over 10 years old eliminated or raised less. In addition, there are varieties, feeding methods, temperature and so on, which will also have a certain impact on the cashmere fineness of bactrian camel.
Acknowledgements
Sincere gratitude goes to the sponsor of Alxa League Science and Technology Project in Inner Mongolia (2012-12).
Statement of conflict of interest
The authors have declared no conflict of interest.
Figures
Distribution of wool fineness of Alxa bactrian camel.
The change trend of wool fineness with age in Alxa bactrian camel.
Regression curve of wool fineness to age of Alxa bactrian camel.
References
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