交配后第9天去胚羊驼黄体的超声评价。

IF 1.6 3区 农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE
Ariadna Yáñez, Almudena Isabel Arrayás, Uri Harold Perez-Guerra, Alicia María López, Edita Yola Torres, Jesús Manuel Palomino
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引用次数: 0

摘要

本研究的目的是在交配后第9天,即母体识别怀孕(MRP)的时间,使用经直肠超声检查有和没有胚胎的雌性羊驼的黄体(CL)的直径、面积、周长和血流量。为此,12女羊驼毛囊≥7毫米与肥沃的雄性交配和处理0.0084毫克的buserelin醋酸(第0天)。之后,女性被随机分为两组(6动物/组):(1)CL与胚胎和(2)CL没有胚胎(胚胎的子宫角9天),两组transrectal超声进行2天确定排卵,5天,7,9,11,13日至评估CL。数据分析采用重复测量方差分析。直径(毫米),面积(平方毫米),周长(毫米),和血流量(%)的CL降低CL没有胚胎组11和13天(6.9±0.6,2.9±1.1,48.3±5.6,12.3±4.7,22.4±1.9,7.4±2.5和39%和55%,分别)相比CL与胚胎组(12.1±0.9,12.1±0.6,111.1±17.1,107.5±8.8,37.2±2.8,37.0±1.7,3%和3%,分别)。综上所述,胚胎切除后羊驼的CL特征在第9天发生了巨大变化,从第11天到第13天,大小和血流量逐渐下降。这些结果可能表明,胚胎在第9天的存在是必要的,以触发阻止黄体溶解的信号。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Ultrasonic Evaluation of the Corpus Luteum in Alpacas With Embryo Removal on Day 9 Post-Mating.

The objective of the present study was to determine the diameter, area, circumference, and blood flow of the corpus luteum (CL) using transrectal ultrasonography in female alpacas with and without the presence of an embryo on Day 9 post-mating, the time of maternal recognition of pregnancy (MRP). For this purpose, 12 female alpacas with follicles ≥ 7 mm were mated with fertile males and treated with 0.0084 mg of buserelin acetate (Day 0). After that, the females were randomly classified into 2 groups (6 animals/group): (1) CL with embryo and (2) CL without embryo (embryo removed from the uterine horn on Day 9). In both groups, transrectal ultrasonography was performed on Day 2 to determine ovulation, and on Days 5, 7, 9, 11, and 13 to evaluate the CL. The data were analysed using repeated measures ANOVA. The diameter (mm), total area (mm2), circumference (mm), and blood flow (%) of the CL were significantly decreased in the CL without embryo group on Days 11 and 13 (6.9 ± 0.6 and 2.9 ± 1.1, 48.3 ± 5.6 and 12.3 ± 4.7, 22.4 ± 1.9 and 7.4 ± 2.5 and 39% and 55%, respectively) compared to the CL with embryo group (12.1 ± 0.9 and 12.1 ± 0.6, 111.1 ± 17.1 and 107.5 ± 8.8, 37.2 ± 2.8 and 37.0 ± 1.7, and 3% and 3%, respectively). In conclusion, the CL characteristics in alpacas with embryo removal changed drastically after Day 9, presenting progressive regression in size and blood flow from Day 11 to 13. These results might indicate that the presence of an embryo on Day 9 is necessary to trigger the signal that prevents luteolysis in this species.

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来源期刊
Reproduction in Domestic Animals
Reproduction in Domestic Animals 农林科学-奶制品与动物科学
CiteScore
3.00
自引率
5.90%
发文量
238
审稿时长
4-8 weeks
期刊介绍: The journal offers comprehensive information concerning physiology, pathology, and biotechnology of reproduction. Topical results are currently published in original papers, reviews, and short communications with particular attention to investigations on practicable techniques. Carefully selected reports, e. g. on embryo transfer and associated biotechnologies, gene transfer, and spermatology provide a link between basic research and clinical application. The journal applies to breeders, veterinarians, and biologists, and is also of interest in human medicine. Interdisciplinary cooperation is documented in the proceedings of the joint annual meetings. Fields of interest: Animal reproduction and biotechnology with special regard to investigations on applied and clinical research.
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