Temporal effect of maternal heat stress during gestation on the fertility and anti-Müllerian hormone concentration of offspring in bovine

Akbarinejad, Vahid; Gharagozlou, Faramarz; Vojgani, M.

doi:10.1016/j.theriogenology.2017.05.018

Cited by 45 publications

(17 citation statements)

References 66 publications

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“…Only a tendency was observed for lying with straight legs (P = 0.099). Similarly, Akbarinejad et al [41] could not demonstrate changes in the adaptation capacity after submission to heat stress occurring at first, second or last third of gestation in cows. Thence, although it seemed that kids were affected at birth and early age, results observed later in life would suggest that HS during early gestation would not affect the offspring behavior at long term.…”

Section: Discussionmentioning

confidence: 84%

Prenatal heat stress effects on gestation and postnatal behavior in kid goats

Coloma-García¹,

Mehaba²,

Llonch³

et al. 2020

PLoS ONE

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Consequences of heat stress during pregnancy can affect the normal development of the offspring. In the present experiment, 30 Murciano-Granadina dairy goats (41.8 ± 5.7 kg) were exposed to 2 thermal environments varying in temperature-humidity index (THI) from 12 days before mating to 45 days of gestation. The environmental conditions were: gestation under thermal-neutral (TN; THI = 71 ± 3); and gestation under heat stress (HS; THI = 85± 3) conditions. At 27 ± 4 days old, female kids exposed to in utero TN (IUTN; n = 16) or in utero HS (IUHS; n = 10) were subjected to 2 tests: arena test (AT) and novel object test (NOT), the latter was repeated at 3 months of age. Additionally, 8 months after birth, a subset of IUTH and IUHS growing goats (n = 8 each; 16.8 ± 3.4 kg BW) were exposed to 2 environmental conditions in 2 consecutive periods: a basal thermal-neutral period (THI = 72 ± 3) for 7 days, and a heat-stress period (THI = 87 ± 2) for 21 days. In both periods, feeding, resting, posture, and thermally-associated behaviors were recorded. The gestation length was shortened by 3 days in GHS goats. In the AT, IUHS kids showed a lower number of sniffs (P < 0.01) compared to IUTN. In the NOT, IUHS kids also tended to show a lower number of sniffs (P = 0.09). During heat exposure, IUTN and IUHS growing goats spent more time resting and exhibited more heat-stress related behaviors such as panting and drinking (P < 0.001); however, no differences were observed between both groups. In conclusion, heat stress during the first third of pregnancy shortened gestation length and influenced the exploratory behavior of the kids in the early life. However, behavior responses to heat stress during the adulthood were not affected by the in utero thermal treatment.

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Section: Discussionmentioning

confidence: 84%

Prenatal heat stress effects on gestation and postnatal behavior in kid goats

Coloma-García¹,

Mehaba²,

Llonch³

et al. 2020

PLoS ONE

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“…Such across-generation HS influences are in agreement with reports from Akbarinejad et al . (2017), who observed a negative effect of maternal HS on offspring fertility in Iranian Holstein dairy cows. Moreover, offspring of dams exposed to HS during late gestation had lower levels for the anti-Müllerian hormone concentration (Akbarinejad et al ., 2017).…”

Section: Discussionmentioning

confidence: 99%

Across-generation effects of maternal heat stress during late gestation on production, female fertility and longevity traits in dairy cows

Kipp

Brügemann

Zieger

et al. 2021

Journal of Dairy Research

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This research paper focuses on time-lagged heat stress (HS) effects from an across-generation perspective. Temperature × 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.

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“…The most likely mechanisms are either 1) decreased proliferation of primordial germ cells in utero leading to fewer primordial follicles being formed, or 2) accelerated depletion of the primordial follicles in the ovaries of the heifers with primparous dams leading to fewer primordial follicles at a year of age. There is certainly evidence for either of these, because both the maternal environment during gestation (Evans et al, 2012;Mossa et al, 2013;Akbarinejad et al, 2017) and nutritional status during the first year of life (Freetly et al, 2014;Amundson et al, 2015) influence the size of the ovarian follicle reserve in heifers. Further studies evaluating fetal ovaries and ovaries collected between birth and a year of age will be necessary to determine the exact timing of the divergence in primordial follicle numbers.…”

Section: Discussionmentioning

confidence: 99%

Maternal age influences the number of primordial follicles in the ovaries of yearling Angus heifers

Tenley

Gomes

Rosasco

et al. 2019

Animal Reproduction Science

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The number of antral follicles detectable by ultrasonography in heifers is influenced by age of the dam, because daughters of primiparous cows have fewer antral follicles than daughters of mature cows. We, therefore, hypothesized that heifers with primiparous dams would have fewer primordial follicles in their ovaries than heifers born to mature (4+ y) cows. Angus heifers (n = 464) were submitted for ultrasonographic evaluation of antral follicle number at 325, 355, and 385 d of age. Ovaries were collected from a random subset of heifers (n = 79) and processed for histological evaluation to determine number of primordial follicles. A greater percentage of heifers with primiparous dams had a corpus luteum at first ultrasonographic examination; however, a greater percentage of heifers with multiparous dams had ovulated by the start of breeding (P < 0.01). Heifers with primiparous dams had fewer antral follicles detectable by ultrasonography (P < 0.01). Heifers with primparous dams had fewer surface antral follicles on their ovaries (P < 0.01), and the number of primordial follicles per histological section was less for heifers with primiparous dams (P = 0.02). These data indicate that the lesser number of antral follicles detectable by ultrasonography in heifers with primparous dams is due to less ovarian follicle reserves. Selecting replacement heifers from mature dams may result in daughters

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Temporal effect of maternal heat stress during gestation on the fertility and anti-Müllerian hormone concentration of offspring in bovine

Cited by 45 publications

References 66 publications

Prenatal heat stress effects on gestation and postnatal behavior in kid goats

Prenatal heat stress effects on gestation and postnatal behavior in kid goats

Across-generation effects of maternal heat stress during late gestation on production, female fertility and longevity traits in dairy cows

Maternal age influences the number of primordial follicles in the ovaries of yearling Angus heifers

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