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首页> 外文期刊>Journal of dairy research >Across-generation effects of maternal heat stress during late gestation on production, female fertility and longevity traits in dairy cows
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Across-generation effects of maternal heat stress during late gestation on production, female fertility and longevity traits in dairy cows

机译：乳制品奶牛晚期妊娠期孕产量，女性生育与长寿性状的母体热应激的跨越效应

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摘要

This research paper focuses on time-lagged heat stress (HS) effects from an across-generation perspective. Temperature x humidity indexes (THI) from the last 8 weeks of pregnancy were associated with subsequent female offspring performances. The offspring dataset considered 172 905 Holstein dairy cows from calving years 2002-2013 from 1,968 herds, located in the German federal state of Hesse. Production traits included milk yield (MKG), protein percentage (PRO%), fat percentage (FAT%), somatic cell score (SCS) and milk urea nitrogen (MUN) from the first official test-day in first lactation. Female fertility traits were the non-return-rate after 56 d (NRR56) in heifers and the interval from calving to first insemination (ICFI) in first parity cows. Longevity traits were the length of productive life (LPL), lifetime productivity in milk yield (LTP-MKG) and milk yield per day of life (MKG-DL). The association analyzes for 10 traits combined with meteorological data from 8 single weeks before calving implied in total 80 different runs. THI ≥50 from all single 8 weeks before calving had unfavorably significant effects on FAT%, ICFI and LPL. Heat stress in terms of THI ≥60 from the last 3 weeks before calving impaired MKG. NRR56 decreased with increasing THI, as observed for all 6 weeks before calving. LTP-MKG and MKG-DL decreased due to high THI in the last 4 weeks before calving. Heat stress (THI ≥60) during late pregnancy had no significantly unfavorable impact on PRO% and MUN. Interestingly, SCS in offspring declined with increasing THI during late pregnancy. In conclusion, for most of the primary and functional traits, unfavorable impact of HS from the dry period on time-lagged performances in offspring was identified, even on longevity. From a practical perspective, our data suggest to provide HS abatement to late gestation dams to avoid long-term adverse effects on the offspring.
机译：本研究论文侧重于跨越角度的时间滞后的热应激（HS）效应。温度X湿度指数（THI）从怀孕后的后续8周与随后的女性后代表演相关。除了1,968群中，考虑了172份905 905霍尔斯坦奶牛，从1,968群，位于德国联邦黑森州。生产性状包括牛奶产率（MKG），蛋白质百分比（Pro％），脂肪百分比（脂肪％），来自第一次哺乳期的第一个官方测试日的官方细胞评分（SCS）和牛奶尿素氮（Mun）。女性生育性特性是在小母牛的56d（NRR56）之后的非收益率，以及在第一阶段奶牛的第一个授精（ICFI）的间隔。长寿特征是生产寿命（LPL）的长度，牛奶产量（LTP-MKG）的寿命生产率和寿命每天乳屈服（MKG-DL）。该关联分析10个特征与气象数据相结合，在产犊前8周内暗示总共80个不同的运行。在产犊前8周的所有单一8周对脂肪％，ICFI和LPL对脂肪％的显着显着影响。在加州损害的MKG损害前的最后3周，≥60的热应力。 NRR56随着在犊牛前6周的所有6周观察到的时，NRR56减少。 LTP-MKG和MKG-DL由于在犊牛前的最后4周内由于高温而减少。妊娠晚期的热应激（THI≥60）对Pro％和Mun没有显着影响。有趣的是，在怀孕迟到的时间里，后代的SCS下降了。总之，对于大多数初级和功能性状，即使在长寿时，确定了HS从干燥期间对后续性表演的干燥期的不利影响。从实际的角度来看，我们的数据建议为后期妊娠水坝提供HS减少，以避免对后代的长期不利影响。

著录项

  • 来源
    《Journal of dairy research》 |2021年第2期|147-153|共7页
  • 作者

    Cordula Kipp; Kerstin Bruegemann; Peter Zieger; Katja Miitze; Sibylle Moecklinghoff-Wicke; Sven Koenig; Kathrin Halli;

  • 作者单位

    Institute of Animal Breeding and Genetics University of Giessen 35390 Giessen Germany;

    Institute of Animal Breeding and Genetics University of Giessen 35390 Giessen Germany;

    Diamond V USA Cedar Rapids IA 52404 USA;

    Hessian Association for Performance and Quality Tests in Animal Breeding e. V. 36304 Alsfeld Germany;

    Innovation Team Milk Hesse 61381 Friedrichsdorf Germany;

    Institute of Animal Breeding and Genetics University of Giessen 35390 Giessen Germany;

    Institute of Animal Breeding and Genetics University of Giessen 35390 Giessen Germany;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Dairy cattle; dry period; heat stress; offspring performances;

    机译：乳牛;干燥期;热应激;后代表演;

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