Acta Veterinaria et Zootechnica Sinica ›› 2021, Vol. 52 ›› Issue (12): 3461-3470.doi: 10.11843/j.issn.0366-6964.2021.012.013

• ANIMAL BIOTECHNOLOGY AND REPRODUCTION • Previous Articles     Next Articles

Comparation of the Testes Development between Liaoning Cashmere Goat and Ziwuling Black Goat at Sexual Maturity

LIANG Weiwei, LI Mingna*, LUO Yuzhu*, WANG Jiqing, KE Na, SHEN Jiyuan, HAO Zhiyun, JIN Xiayang, LU Yujie, HUANG Zhaochun   

  1. Gansu Key Laboratory of Herbivorous Animal Biotechnology, College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China
  • Received:2021-04-28 Online:2021-12-25 Published:2021-12-22

Abstract: The study aimed to investigate the differences in testicular development between Liao-ning cashmere goat and Ziwuling black goat at sexual maturity and to compare the reproductive performance between the two breeds. In this study, testicular tissues were collected from five healthy Liaoning cashmere goats and five healthy Ziwuling black goats at sexual maturity stage. The testicular tissue development and morphological differences between the two goat breeds were compared using anatomy and Hematoxylin-eosin (HE) stained, respectively. The concentration of androgen were detected using ELISA assay. The expression of DEAD box polypeptide 4 (DDX4) and Deleted in azoospermia-like gene (DAZL) in testis of the two breeds were detected using Real-time quantitative PCR(RT-qPCR) and Western blot technique. The study revealed that the total weight and length circumference of testicular in Liaoning cashmere goats were significantly higher than those in Ziwuling black goats (P<0.01), while the difference testicular breadth circumference, total testicular weight/pre-slaughter live weight and total testicular weight/carcass weight between the two goat breeds were not significant (P>0.05). The spermatogenic epithelial thickness of Liaoning cashmere goats was significantly higher than that of Ziwuling black goats (P<0.05), there were no significant differences in the area and diameter of the seminal tubules, number of seminal tubules per unit area between the two goat breeds (P>0.05). The difference of androgen secretion in testis between the two goat breeds was not significant (P>0.05). The expression levels of DDX4 mRNA and DDX4 protein in the testis of Liaoning cashmere goats were significantly higher than those of Ziwuling black goats (P<0.01 or P<0.05). The expression levels of DAZL mRNA in the testis of Liaoning cashmere goats was significantly higher than that of Ziwuling black goats (P<0.01), while the expression of DAZL protein between two goat breeds was not significant (P>0.05). In short, the degree of gonad development in Liaoning cashmere goats was identical with Ziwuling black goats, while the spermatogenic epithelium was thicker than Ziwuling black goats, there were relevant difference in the expression levels of reproductive marker genes between the two goat breeds, which might affect the spermatogenic ability between the two breeds.

Key words: Liaoning cashmere goat, Ziwuling black goat, testes, DDX4, DAZL

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