纯种印度瘤牛和普通牛中窦状卵泡数量与卵巢储备（窦前卵泡）之间的相关性。
The correlation between the number of antral follicles and ovarian reserves (preantral follicles) in purebred Bos indicus and Bos taurus cows.
作者信息
Silva-Santos Katia Cristina, Santos Gustavo Martins Gomes Dos, Siloto Letícia Schmidt, Santos Joabel Tonellotto Dos, Oliveira Eduardo Raele de, Machado Fernanda Zandonadi, Rosa Camila Oliveira, Seneda Marcelo Marcondes
机构信息
Laboratório de Biotecnologia da Reprodução Animal (ReproA), DCV-CCA-Universidade Estadual de Londrina (UEL), Londrina, PR, 86051-990 Brazil.
Laboratório de Biotecnologia e Reprodução Animal (BioRep), Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, 97105-900 Brazil.
出版信息
Anim Reprod Sci. 2014 Dec 30;151(3-4):119-25. doi: 10.1016/j.anireprosci.2014.10.016. Epub 2014 Oct 24.
The objectives of this study were to compare populations of preantral follicles between purebred Bos indicus and Bos taurus cows with high or low antral follicle counts (AFC) and to correlate the number of preantral follicles with the population of antral follicles. Nelore (Bos indicus, n=100) and Angus (Bos taurus, n=100) cow ovaries were collected at abattoirs and examined using ultrasonography. Antral follicles ≥3mm were counted, and the cows ovaries were assigned to high (G-High) or low (G-Low) AFC groups based on the mean number (±1 SD) of ovarian antral follicles: Bos indicus with high AFC (≥57 follicles, n=8) or low AFC (≤21 follicles, n=8) and Bos taurus with high (≥45 follicles, n=10) or low AFC (≤13 follicles, n=10). The ovaries were processed, and the number of preantral follicles was estimated. Between-groups comparisons were performed using a Kruskal-Wallis test, and the correlation between preantral and antral follicles was evaluated using a Pearson's correlation test (P≤0.05). A large variation in the number of preantral follicles was observed among the animals. Although there was a correlation between the population of preantral follicles and the number of antral follicles, there was no difference between the mean number of preantral follicles in the Bos indicus G-High (48,349±30,149) and G-Low groups (33,037±31,710) or between the Bos taurus G-High (35,050±36,060) and G-Low groups (30,481±43,360). Therefore, the preantral follicle population did not differ between purebred Bos indicus and Bos taurus cattle with high or low AFC but was correlated with the number of antral follicles. In addition to the large within-groups variation in the number of preantral follicles, some cows with high AFC had lower populations of preantral follicles compared to the low AFC group, and the highest population of preantral follicles was observed in both Bos indicus and Bos taurus with low AFC.
本研究的目的是比较纯种印度瘤牛和普通牛中窦前卵泡数量在高或低窦卵泡计数（AFC）情况下的差异，并将窦前卵泡数量与窦卵泡数量进行关联分析。在屠宰场收集了100头尼尔罗牛（印度瘤牛）和100头安格斯牛（普通牛）的卵巢，并通过超声检查进行评估。对直径≥3mm的窦卵泡进行计数，并根据卵巢窦卵泡的平均数量（±1标准差）将母牛卵巢分为高AFC组（G-High）或低AFC组（G-Low）：印度瘤牛高AFC组（≥57个卵泡，n = 8）或低AFC组（≤21个卵泡，n = 8），普通牛高AFC组（≥45个卵泡，n = 10）或低AFC组（≤13个卵泡，n = 10）。对卵巢进行处理，并估计窦前卵泡的数量。组间比较采用Kruskal-Wallis检验，窦前卵泡与窦卵泡之间的相关性采用Pearson相关检验（P≤0.05）。在动物之间观察到窦前卵泡数量存在很大差异。虽然窦前卵泡数量与窦卵泡数量之间存在相关性，但印度瘤牛G-High组（48,349±30,149）和G-Low组（33,037±31,710）的窦前卵泡平均数量之间，以及普通牛G-High组（35,050±36,060）和G-Low组（30,481±43,360）的窦前卵泡平均数量之间均无差异。因此，在高或低AFC的纯种印度瘤牛和普通牛之间，窦前卵泡数量没有差异，但与窦卵泡数量相关。除了组内窦前卵泡数量存在较大差异外，一些高AFC的母牛与低AFC组相比，窦前卵泡数量较少，并且在印度瘤牛和普通牛的低AFC组中均观察到最高的窦前卵泡数量。
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