Relationship of the conception rate and the side (left or right) of preovulatory follicle location at artificial insemination in dairy heifers.
Relationship of the conception rate and the side (left or right) of preovulatory follicle location at artificial insemination in dairy heifers.
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奶牛人工授精时受孕率与排卵前卵泡位置一侧（左侧或右侧）的关系。
DOI：
10.1111/asj.12949
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发表时间：
2018
影响因子：
2
通讯作者：
Izumi T
中科院分区：
文献类型：
--
作者：
Miura R;Izumi T
在这项研究中，我们研究了位置的影响（左或右卵巢）排卵前卵泡（PF）对生育力的奶牛。总共分析了1，111例人工授精（AI）。在AI时，使用直肠触诊检查PF位置，并将小母牛根据其PF位置分为两组：（i）PF位于左卵巢（L-PF）;和（ii）PF位于右卵巢（R-PF）。AI后60天直肠触诊诊断妊娠。所有小母牛的受胎率为50.7%。L-PF的受孕率（60.1%）显著高于R-PF（46.2%）。性控精液的受胎率（48.6%）显著低于常规精液（59.1%）。对于两种精液类型（性别：n= 896，常规：n= 215），L-PF的受孕率均显著高于R-PF（性别：L-PF vs. R-PF：57.3% vs. 44.4%，常规; L-PF vs. R-PF：72.3% vs. 53.3%）。此外，季节、年龄、AI数量和同一发情期的再授精次数不影响受孕率。总之，左卵巢PF的发展与奶牛受孕率的增加有关。
In this study, we examined the locational effect (left or right ovary) of the preovulatory follicle (PF) on fertility in dairy heifers. In total, 1,111 artificial inseminations (AI) were analyzed. At AI, PF locations were examined using rectal palpation, and heifers were divided into two groups on their PF locations: (i) the PF located in the left ovary (L‐PF); and (ii) the PF located in the right ovary (R‐PF). Pregnancy was diagnosed by rectal palpation 60 days after AI. The conception rate was 50.7% in all heifers. Conception rate was significantly higher in the L‐PF (60.1%) than in the R‐PF (46.2%). The conception rate was significantly lower by sexed semen (48.6%) than conventional semen (59.1%). Conception rates divided by the semen type (sexed:n= 896, conventional:n= 215) were significantly higher in the L‐PF than in the R‐PF for both semen types (sexed; L‐PF vs. R‐PF: 57.3% vs. 44.4%, conventional; L‐PF vs. R‐PF: 72.3% vs. 53.3%). In addition, season, age, AI number, and the number of re‐inseminations at the same estrus did not affect conception rates. In summary, PF development in the left ovary was associated with increased conception rates in dairy heifers.
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奶牛繁殖前生育力与卵巢卵泡波的关系。
影响因子：
3.3
作者：
D. Townson;Paul C. W. Tsang;W. Butler;M. Frajblat;L. Griel;C. Johnson;R. Milvae;G. Niksic;Joy L. Pate
通讯作者：
Joy L. Pate
影响因子：
3.5
作者：
R. P. Reece;C. W. Turner
通讯作者：
C. W. Turner
影响因子：
3.5
作者：
Healy, A. A.;House, J. K.;Thomson, P. C.
通讯作者：
Thomson, P. C.
影响因子：
3.5
作者：
OLTENACU, PA;FRICK, A;LINDHE, B
通讯作者：
LINDHE, B
小母牛的 CL、排卵前卵泡、卵泡波数量以及左右卵巢之间复杂的相互关系。
影响因子：
2.8
作者：
O. J. Ginther;H. Rakesh;M. M. Hoffman
通讯作者：
M. M. Hoffman