Abstract The objectives of this study were to assess the efficacy of estrous manipulation protocols and pregnancy specific protein B (PSPB) levels to determine kid number at birth in Lezhi black goats. Eighty-eight does were randomly allocated to three treatments. The PPe group (n = 29) was treated with Controlled Internal Drug Release devices (CIDR) for 7 days and 300 IU eCG and 0.2 mg PGF2α at the time of CIDR removal. The PPG group (n = 28) was treated with a CIDR for 7 days and 0.2 mg PGF2α at the time of CIDR removal and 15 μg GnRH at the onset of estrus. The GPG group (n = 31) was treated with 15 μg GnRH (day 0) and 0.2 mg PGF2α on day 7, and a second GnRH treatment at the onset of estrus. Does at estrus were hand-mated using proven bucks. Estrous response ranged from 80.6% to 89.7%. The onset of estrus for the PPe, PPG and GPG groups was 38.4 ± 1.9, 45.6 ± 1.9 and 53.8 ± 1.4 h (P

中文翻译：

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动情同步协议和妊娠特异性蛋白 B 浓度的评估用于预测乐至黑山羊的骗子率

摘要 本研究的目的是评估发情操作方案和妊娠特异性蛋白 B (PSPB) 水平在确定乐至黑山羊出生时的孩子数方面的功效。八十八个确实被随机分配到三个治疗中。PPe 组 (n = 29) 使用受控内部药物释放装置 (CIDR) 治疗 7 天，并在 CIDR 去除时使用 300 IU eCG 和 0.2 mg PGF2α。PPG 组（n = 28）用 CIDR 治疗 7 天，在去除 CIDR 时用 0.2 mg PGF2α 和在发情开始时用 15 μg GnRH。GPG 组（n = 31）在第 7 天用 15 μg GnRH（第 0 天）和 0.2 mg PGF2α 治疗，并在发情开始时进行第二次 GnRH 治疗。是否在发情期是使用经过验证的雄鹿手工交配的。发情反应范围从 80.6% 到 89.7%。PPe、PPG 和 GPG 组的发情开始时间为 38。