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首页> 外文期刊>The Journal of Veterinary Medical Science >Effect of Embryo Transfer following Artificial Insemination (ETFAI) on Reproductive Performance in Dairy Cows in South-Western Japan
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Effect of Embryo Transfer following Artificial Insemination (ETFAI) on Reproductive Performance in Dairy Cows in South-Western Japan

机译：人工授精（ETFAI）后的胚胎移植对日本西南奶牛繁殖性能的影响

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摘要

In order to improve the reproductive performance during the summer period, embryo transfer (ET; Japanese black embryo) following artificial insemination (AI; Holstein semen: ETFAI) was conducted in dairy cows in south-western Japan (n=56). The conception rate was improved in cows with ETFAI compared with conventional AI, which served as the control (n=195; 30.4% vs. 13.8%, P < 0.01). However, higher fetal loss was observed in ETFAI compared with the controls (38.1% vs. 7.4%, P < 0.05). Four cases of twin pregnancy resulted in 2 singletons and a set of twins. There was no difference in the plasma progesterone level on d0 or d7 (d0=AI), but rather lower rectal temperature was observed on d7 or d8 (38.7 degrees C vs. 39.4 degrees C and 38.8 degrees C vs. 39.1 degrees C, P < 0.05) in pregnant cows compared with those that were open. ETFAI could improve reproductive performance in dairy cows during the summer period in southwestern Japan.
机译：为了提高夏季的生殖性能，在日本西南部的奶牛中进行了人工授精（AI;荷斯坦精液：ETFAI）后的胚胎移植（ET;日本黑胚）（n = 56）。与作为对照的传统AI相比，使用ETFAI的母牛的受胎率有所提高（n = 195; 30.4％vs. 13.8％，P <0.01）。但是，与对照组相比，ETFAI观察到更高的胎儿丢失率（38.1％vs. 7.4％，P <0.05）。四例双胞胎妊娠导致2个单胎和一组双胞胎。在d0或d7时血浆孕酮水平没有差异（d0 = AI），但在d7或d8时观察到较低的直肠温度（38.7摄氏度vs. 39.4摄氏度和38.8摄氏度vs. 39.1摄氏度，P <0.05）与开放的母牛比较。 ETFAI可以改善日本西南部夏季夏季奶牛的繁殖性能。

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