Hagen D R, Shuey C P, Watkins J L
Biol Reprod. 1984 Mar;30(2):423-6. doi: 10.1095/biolreprod30.2.423.
The influence of uterine crowding on litter size and the fetal capacity of the feral pig uterus were examined in a control (C) group and three groups of surgically altered feral (Ossabaw) gilts. The altered groups were unilaterally ovariectomized (UOX), unilaterally tubally ligated (UTL), or unilaterally hysterectomized-ovariectomized (UHOX). Litter sizes of C, UOX and UHOX at 30 days of gestation were similar and larger than the UTL group. At 45 days, litter size was reduced (P less than 0.06) in UHOX gilts. These results indicate that uterine capacity of feral swine is limiting after Day 30, and that the maximum litter size for the feral pig is 8 to 10.
在一个对照组（C组）和三组经手术改变的野生（奥萨巴沃）后备母猪中，研究了子宫拥挤对产仔数和野猪子宫容纳胎儿能力的影响。改变的组分别是单侧卵巢切除（UOX）、单侧输卵管结扎（UTL）或单侧子宫切除 - 卵巢切除（UHOX）。妊娠30天时，C组、UOX组和UHOX组的产仔数相似且大于UTL组。在45天时，UHOX后备母猪的产仔数减少（P小于0.06）。这些结果表明，野猪的子宫容量在第30天后受到限制，并且野猪的最大产仔数为8至10头。
