Comparison of reproductive performance and functional analysis of spermatogenesis factors between domestic yak and semi-wild blood yak

Table 2 Comparison of reproductive performance

Items	Groups			SEM	P-value
Items	GN	QH	SB	SEM	P-value
Time of sexual maturity/age	2.45 ± 0.16	2.50 ± 0.00	2.35 ± 0.08	0.03	0.142
Age at first breeding/age	3.7 ± 0.08^a	3.7 ± 0.08^a	3.3 ± 0.13^b	0.06	0.013
Service lifespan/year	3.9 ± 0.19^B	3.6 ± 0.18^B	5.2 ± 0.28^A	0.18	0.000
Breeding ability/head	22.9 ± 0.48^A	20.9 ± 0.35^B	17.7 ± 0.37^C	0.46	0.000

Note: There is a significant difference (P < 0.05) between the different lowercase letters of the peer shoulder standard, and the difference between the different uppercase letters of the peer shoulder standard is extremely significant (P < 0.01); SEM:standard error of means. the following table is the same

ISSN: 1471-2164