Department of Animal Science, Karaj Branch, Islamic Azad University, Karaj, Iran
Receive Date: 02 February 2013,
Revise Date: 08 March 2013,
Accept Date: 16 March 2013
This study was conducted to investigate the effects of age and sex on the fleece characteristics of 40 Iranian indigenous Khorasan goats. Goats were divided into two different sex and age (kids and adults) groups. Fiber characteristics under study were: fleece weight, fiber length, lock length, fiber diameter, coefficient of fiber diameter, breaking load, resistance, elongation, hair percentage and down fibers percentage. The results showed that sex and age had a significant effect on fleece weight and fiber diameter. The average fleece weight was 214.6 ± 0.5 g in males and 186.9 ± 4.15 g in females while 196.2 ± 15.8 g in kids and 205.5 ± 15.8 g in adults. The average fiber diameter was 88.4 ± 4.5 microns in males and 73.5 ± 3.9 microns in females while 73.4 ± 3.9 microns in kids and 88.5 ± 4.5 microns in adults. The resistances of hair in kids (8±0.9 grf/t) were lower than in adult goats (10.5±0.7 grf/t). Fleeces had down fibers (1-30% with the average amount of 11.1%±2.2), average fiber diameter of 16.4 ± 0.6 micron and coefficient of variation of fiber by 18.3 ± 1.1%. The correlation between fiber length and lock length, resistance and lock length were 0.9 and 0.6, respectively which was considered highly positive. In the overall view, according to the approximately low fleece weight, low fiber length and including of down fibers in the fleece of indigenous Khorasan goats, they are categorized in hair goats with medium quality fleeces.
ACSAD. (1983). Natural and Human Resources. Livestock in the Alhamad of Jordon. Arab Center for Studies of Arid Zones and Dry Lands. Damascus. Syria. ASTM D2130. (2001). American Society for Testing Materials, Diameter of Cashmere and other Animal Fibers by Microprojection.West Conshohocken. USA. ASTM D1294. (2005). American Society for Testing Materials, Standard test Method for Tensile Strength and Breaking Tenacity of Cashmere Fiber Bundles 1-in. (25.4 mm) Gage Length. West Conshohocken. USA. Ansari-Ranani H.R., Mueller J.P., Rischkowsky B., Seyed-Momen S.M., Alipour O., Ehsani M. and Moradi S. (2012). Down fibers quality of Raeini goats kept by nomads in Iran. Small Rumin. Res. 104, 10-16. Bilgen A., Akman N., Erol H., Ankaralı B. and Aytaç M. (2008). Some mohair characteristics and live weights after shearing of Angora goats reared at Lalahan livestock research institute. J. Lalahan Livest. Res. Inst. 48(1), 38-43. Chekini E., Ansari-renani H.R., Taherpour-Dari N. and Yarahmadi B. (2006). The survey of fiber characteristics in different ages of Lori goats. Report of Project. Animal Science Research, Institute. Iran. Deger-Oral-Toply H. and Altinel A. (2008). Some production traits of indigenous hair goats bred under extensive conditions in Turkey. Pp. 498-506 in Proc. 1st Comm., Reprod. Arch. Tierz. Dummerstorf. Eisazadeh F. (2009). Evaluation of skin and fiber characteristics of indigenous goats of Lorestan. MS Thesis. Karaj Branch, Islamic Azad University. Iran. Hezarh-Moghadam R. and Salehi M. (2009). Evaluation of coating fiber performances of Sistan and Baluchestan native goats. Animal Science Research Institute. Iran. ISIRI. (1998).Institution of Standards and Industrial Research of Iran.Iranian Standard of Characteristics of Fiber in Hairy Goat. No. 4487. Ministry of Industry. Iran ISIRI. (2001). Institution of Standards and Industrial Research of Iran. Goat Hair Fibers Specification and Test Method. No. 4487.Ministry of Industry.Iran. Mc Gregor B. and Butler K.L. (2008). Down fibers production and fleece attributes associated with farm of origin, age and sex of goat in Australia. Australian J. Exp. Agric. 48(8),1090-1098. NagalK. (2006). Assessment of physical properties of camel and goat hair. MS Thesis. Univ. Agric. Sci. Dharwad.India. Negahdari S.H., Salehi M. and Noshari A. (2009). The effect of some environmental factors on fiber characteristics of indigenous goats of Abadeh. Anim. Sci.4, 73-61. Pokharana A.K., Patini P.C., Gupta N.P., Arora R.K., Shakyawar D.B. and Ammayappan L. (1999). Processing of Different Hair Wool for Value Added Products. Achievements Central Sheep and Wool Research Institute. Pordel A. (2000). Hair Fibers Review on Iranian Native Goats and some Boundary Countries with Respect to Marketing and Processing. Deputy for livestock affairs. Ministry of Agricultural Jihad, Iran. Raofifard M. (2001). Evaluation of productive characteristics of hair goats in south of Khorasan. MS Thesis. Inst. Res. Imam Khomeini. Tehran. Saghi D.A., Shiri S.A. and Nikbakhti M. (2007). Study on down fibers quality and hair percentage of black goat of Southern Khorasan for stable development of agriculture. Pakistan J. Nutr.6(4), 397-398. Salehi M., Aasadi-Fozi M., Mir-Hadi A., Afshar M. (2010). Environmental factors affecting fleece traits in Raeini down fibers goat. Sultan Qaboos University Research. J. Agric.Marine. Sci. 15,10-15 . Salehi M., Taherpour M. and Beheshty M. (2000). Evaluation of environmental effects and the method of goat upbringing on the characteristics of Raeini down fibers goats. Res. Prod.13(2), 90-98. SAS Institution. (2002). SAS®/STAT Software, Release 9.0. SAS Institute, Inc., Cary, NC. Taherpour N. (2004). The comparison of characteristics of fibers in different zones of fleece in hair black goats in south of Khorasan. Pp. 658 in Proc. 1nd Cong. Anim. Aqua. Count. Tehran, Iran. Zhou H.M., AllainD., Li J.Q., Zhang W.G. and Yu X.C. (2003). Effects of non-genetic factors on production traits of Inner Mongoliadown fibers goats in China. Small Rumin. Res. 47(1), 85-89.