经产母猪的各种口部行为规癖明显多于初产母猪。
Multiparous sows expressed more oral behavioral Stereotypies than gilts sows.
秋末冬初季节，应用孕马血清促性腺激素（PMSG）和人绒毛膜促性腺激素（HCG）对16头经产野母猪进行试验。
The experiments with PMSG and HCG in 16 wild female pigs were conducted in late autumn and early winter.
母猪年龄是影响多产性的一个重要因素，初产的总产仔数和产活仔数均低于经产胎次。
Age is one important factor influencing of prolificacy, the TNB of first born is less than the TNB of the still-born, so does in the NBA.
母猪年龄是影响多产性的一个重要因素，初产的总产仔数和产活仔数均低于经产胎次。
Age is one important factor influencing of prolificacy, the TNB of first born is less than the TNB of the still-born, so does in the NBA.
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