Other common factors affecting fertility are issues with physical health such as lameness and BCS. Reduced BCS is associated with reduced conception rates at first AI postpartum, more days open, and postponed resumption of cyclicity resulting in a longer interval from parturition to first estrus and first service (Roche et al., 2009). Carryover effects of reduced BCS during the transition period have been demonstrated to be detrimental even after the voluntary waiting period, where the likelihood of pregnancy has been found to be reduced with each 0.5-unit decrease of BCS (Buckley et al., 2003; Roche et al., 2007). Lameness also is associated with less pregnancy per AI (Burnett et al., 2017), and increased number of inseminations per conception (Hernandez et al., 2001; Melendez et al., 2003), days to conception (Burnett et al., 2017), and prevalence of ovarian cysts (Melendez et al., 2003). It is not well understood how expression of estrus, BCS, and lame-ness affect fertility. One potential cause may be from disruptions of the events that lead to ovulation. In the present study, we aimed to determine if the reductions in fertility that are found with lesser estrous expression, as well as with lameness and BCS, are associated with the interval from activity alert to ovulation using AAM.
Other common factors affecting fertility are issues with physical health such as lameness and BCS.<br> Reduced BCS is associated with reduced conception rates at first AI postpartum, more days open, and postponed resumption of cyclicity resulting in a longer interval from parturition to first estrus and first service (Roche et al., 2009).<br> Carryover effects of reduced BCS during the transition period have been demonstrated to be detrimental even after the voluntary waiting period, <br>where the likelihood of pregnancy has been found to be reduced with each 0.5-unit decrease of BCS (Buckley et al., 2003; Roche et al., 2007). <br>跛行還與每AI更少妊娠相關聯,並且增加的每株概念授精的數目(Burnett等人,2017。)(Hernandez等人,2001;梅倫德斯等人,2003)。,天受孕(Burnett等人, 2017年),和卵巢囊腫的患病率(梅倫德斯等人,2003)。<br>它不能很好地理解發情,BCS和跛腳內斯的表達如何影響生育。<br>一個潛在的原因可能是從導致不排卵的事件的干擾。<br>在本研究中,我們的目的是確定是否被發現用較小的動情表達,生育率下降以及與跛行和BCS,與來自活動警報排卵期使用AAM的區間有關。
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