Sanitary program to reduce embryonic mortality associated with infectious diseases in cattle

Alfieri, Amauri Alcindo; Leme, Raquel Arruda; Agnol, Alais Maria Dall

doi:10.21451/1984-3143-ar2019-0073

Cited by 5 publications

(10 citation statements)

References 48 publications

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“…All the contexts discussed here are highly relevant because although reproductive biotechniques have been developed for livestock, their use has been associated with epigenetic alterations 49 due to the various management practices and environmental influencing factors to which the animals are submitted. The intensification of livestock has certainly generated greater nutritional, sanitary or behavioural/animal welfare challenges that somehow contributed to greater environmental stress on gametes and embryos, compromising the fertility of the herd 50 – 53 . Therefore, the present study also stands out as highly relevant due to the association of basic science with practical field results, revealing that a low AFC is associated with the high expression of genes responsible for cell maintenance, resistance to cell stress and apoptosis.…”

Section: Discussionmentioning

confidence: 99%

Ovarian follicular dynamics, progesterone concentrations, pregnancy rates and transcriptional patterns in Bos indicus females with a high or low antral follicle count

Lima¹,

Morotti

Bayeux³

et al. 2020

Sci Rep

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We evaluated the effect of the antral follicle count (AFC) on ovarian follicular dynamics, pregnancy rates, progesterone concentrations, and transcriptional patterns of genes in Nelore cattle (Bos taurus indicus) after a timed artificial insemination (TAI) programme. Cows were separated based on the AFC, and those with a high AFC showed a larger (P < 0.0001) ovarian diameter and area than those with a very low AFC. Females with a very low AFC exhibited a larger (P < 0.01) diameter of the dominant follicle at TAI (13.6 ± 0.3 vs. 12.2 ± 0.4 mm) and a tendency (P = 0.06) to have different serum progesterone concentrations (2.9 ± 0.3 vs. 2.1 ± 0.3 ng/mL; on day 18, considering day 0 as the beginning of the synchronization protocol) than those with a high AFC. The pregnancy rate was higher (P ≤ 0.05) in animals with a very low (57.9%) and low (53.1%) AFC than in those with a high AFC (45.2%). The expression of genes related to intercellular communication, meiotic control, epigenetic modulation, cell division, follicular growth, cell maintenance, steroidogenesis and cellular stress response was assessed on day 5. In females with a low AFC, 8 and 21 genes in oocytes and cumulus cells, respectively, were upregulated (P < 0.05), while 3 and 6 genes in oocytes and cumulus cells, respectively, were downregulated. The results described here will help elucidate the differences in ovarian physiology and the reproductive success of Bos indicus females with a low or high AFC.

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Section: Discussionmentioning

confidence: 99%

Ovarian follicular dynamics, progesterone concentrations, pregnancy rates and transcriptional patterns in Bos indicus females with a high or low antral follicle count

Lima¹,

Morotti

Bayeux³

et al. 2020

Sci Rep

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“…The infectious causes of reproductive disease were reported to vary in different countries. For example, three main infectious reproductive disease in Brazil cattle herds were IBR, BVD, and leptospirosis [ 16 ]. In addition, neosporosis (21.8–35%) along with IBR (54.4–60.3%) and BVD (30–42.5%) were reported as three main reproductive diseases in Brazil [ 17 ].…”

Section: Discussionmentioning

confidence: 99%

Seroprevalence of Seven Reproductive Diseases in Beef and Dairy Cows from Three Provinces in Indonesia

Subekti

Fatmawati

Khoiriyah³

et al. 2021

Veterinary Medicine International

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Bovine reproductive diseases are endemic in Indonesia, but comprehensive information about their infectious causes is not available. Therefore, our aim for this study was to detect several infectious agents that cause reproductive diseases in Indonesian beef and dairy cows. A total of 152 cow serum samples collected by Faculty of Veterinary Medicine of Brawijaya University and Veterinary Disease Investigation Centre as a part of the mandatory and regularly surveillance system from three provinces during 2019–2020 were used. The samples were then sent to Indonesian Research Centre for Veterinary Science (IRCVS) for further detection of seven reproductive diseases by enzyme-linked immunosorbent assay (ELISA). Seven reproductive diseases to be tested in parallel are neosporosis, chlamydiosis, brucellosis, Q fever, bovine viral diarrhea (BVD), infectious bovine rhinotracheitis (IBR), and BHV-4 infection. The dominant reproductive diseases in Indonesian cows were BVD (45.69%), chlamydiosis (31.58%), IBR (20.53%), neosporosis (11.84%), and BHV-4 infection (10.53%). The seroprevalence of IBR, BHV-4 infection, neosporosis, and brucellosis varied significantly P < 0.05 between dairy and beef cattle. The most dominant reproductive diseases in aborted cows were chlamydiosis (45%), BVD (41%), and neosporosis (10%). The conclusion drawn from this study is that the dominant reproductive diseases in Indonesian cows are BVD, chlamydiosis, IBR, neosporosis, and BHV-4 infection. Chlamydiosis, BVD, and neosporosis are common among aborted cow. Chlamydiosis, neosporosis, and BHV-4 infection should be included in the national priority list in Indonesia. Control and preventive measures should be focused on high-risk areas and animals like stray cat and dog.

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“…When referring to the bovine species, the term ‘embryo’ refers to the development that occurs up to around 42−45 days following conception, during which time the cells are still differentiating (Jones et al., 2010). The term ‘embryonic mortality’ refers to the losses between fertilisation and the end of the differentiation stage, which is about day 40 (Alfieri et al., 2019). Therefore, this time frame is utilised to assess the rate of embryonic death in beef and dairy cattle (Parmar et al., 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Fertilisation failure and embryonic mortality, the latter of which is more important, are relatively well‐known phenomena that impact reproductive efficiency (Wathes et al., 2020). Early embryonic mortality is a substantial source of economic loss due to recurrent breeding and rising costs of artificial insemination (Alfieri et al., 2019).…”

Section: Introductionmentioning

confidence: 99%

BoHV‐1 affects abortion and progesterone in dairy cows Bovine alphaherpesvirus 1 (BoHV‐1) seropositivity, progesterone levels and embryo loss of 30‐day‐old pregnant dairy cows in Zagros Industrial Dairy Farm in Shahrekord: Examination and analysis

Khaneabad,

Taktaz,

Goodarzi

et al. 2023

Veterinary Medicine & Sci

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Background: Bovine alphaherpesvirus 1 (BoHV-1) is a serious disease with severe negative economic effects on the global cattle sector, especially in Iran.Objective: This cross-sectional study was carried out to examine the seroprevalence and associated risk factors of BoHV-1 infection with progesterone levels and embryo death in 30-day pregnant dairy cattle at Zagros Industrial Dairy Farm in Shahrekord, Iran.Methods: Between December 2017 to February 2018, blood samples were obtained from 60 dairy cow herds. To determine whether BoHV-1 was present, serum samples were examined using the ELISA for serum antibodies. To find progesterone (P4) in blood, the progesterone ELISA test was used.Results: 96.7 % of sera tested positive for BoHV-1 antibodies, according to the findings. Additionally, 60.34 % of blood samples that tested positive had an experience of abortion and significantly more inseminations that resulted in pregnancy, consistent with findings from other studies conducted in Iran and other nations.Conclusions: Since this study is the first to document the risk factor for BoHV-1 infection in Shahrekord, Iran, we could infer that the virus is extensively dispersed in this area.

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Sanitary program to reduce embryonic mortality associated with infectious diseases in cattle

Cited by 5 publications

References 48 publications

Ovarian follicular dynamics, progesterone concentrations, pregnancy rates and transcriptional patterns in Bos indicus females with a high or low antral follicle count

Ovarian follicular dynamics, progesterone concentrations, pregnancy rates and transcriptional patterns in Bos indicus females with a high or low antral follicle count

Seroprevalence of Seven Reproductive Diseases in Beef and Dairy Cows from Three Provinces in Indonesia

BoHV‐1 affects abortion and progesterone in dairy cows Bovine alphaherpesvirus 1 (BoHV‐1) seropositivity, progesterone levels and embryo loss of 30‐day‐old pregnant dairy cows in Zagros Industrial Dairy Farm in Shahrekord: Examination and analysis

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