Effectiveness of two intranasal vaccines for the control of bovine respiratory disease in newborn beef calves: A randomized non-inferiority multicentre field trial

Masset, Nicolas; Meurens, François; Marie, Mohammad; Lesage, Pauline; Lehébel, Anne; Brisseau, Nadine; Assié, Sébastien

doi:10.1016/j.tvjl.2020.105532

Cited by 5 publications

(2 citation statements)

References 38 publications

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“…Colostrum antibodies may protect calves for long periods (up to 6 months) against some virus (BVDV and IBR); however, they will have a short half‐life for other pathogens such as BRD bacteria, BRSV and PI3 (Fulton et al., 2004 ; Prado et al., 2006 ; Chamorro et al., 2014 ). This can be mitigated by the use of intra‐nasal vaccination against BRSV and PI3 in very young calves (Masset et al., 2020 ; Sandelin et al., 2020 ). Appropriate feeding of calves is another key aspect.…”

Section: Assessmentmentioning

confidence: 99%

Welfare of calves

Nielsen¹,

Álvarez²,

Bicout³

et al. 2023

EFS2

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This Scientific Opinion addresses a European Commission request on the welfare of calves as part of the Farm to Fork strategy. EFSA was asked to provide a description of common husbandry systems and related welfare consequences, as well as measures to prevent or mitigate the hazards leading to them. In addition, recommendations on three specific issues were requested: welfare of calves reared for white veal (space, group housing, requirements of iron and fibre); risk of limited cow-calf contact; and animal-based measures (ABMs) to monitor on-farm welfare in slaughterhouses. The methodology developed by EFSA to address similar requests was followed. Fifteen highly relevant welfare consequences were identified, with respiratory disorders, inability to perform exploratory or foraging behaviour, gastroenteric disorders and group stress being the most frequent across husbandry systems. Recommendations to improve the welfare of calves include increasing space allowance, keeping calves in stable groups from an early age, ensuring good colostrum management and increasing the amounts of milk fed to dairy calves. In addition, calves should be provided with deformable lying surfaces, water via an open surface and long-cut roughage in racks. Regarding specific recommendations for veal systems, calves should be kept in small groups (2-7 animals) within the first week of life, provided with ~20 m 2 /calf and fed on average 1 kg neutral detergent fibre (NDF) per day, preferably using long-cut hay. Recommendations on cow-calf contact include keeping the calf with the dam for a minimum of 1 day post-partum. Longer contact should progressively be implemented, but research is needed to guide this implementation in practice. The ABMs body condition, carcass condemnations, abomasal lesions, lung lesions, carcass colour and bursa swelling may be collected in slaughterhouses to monitor on-farm welfare but should be complemented with behavioural ABMs collected on farm.

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Section: Assessmentmentioning

confidence: 99%

Welfare of calves

Nielsen¹,

Álvarez²,

Bicout³

et al. 2023

EFS2

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“…To prevent the onset of respiratory infections during the fattening period of young bulls, vaccinations targeting the main pathogens can also be used [2,18]. Currently, vaccination is carried out when the young are gathering.…”

Section: Introductionmentioning

confidence: 99%

Appeasing Pheromones against Bovine Respiratory Complex and Modulation of Immune Transcript Expressions

Hervet

Boullier

Guiadeur

et al. 2021

Animals

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Bovine respiratory disease is still a major concern and has major economic impact. Another consequence of respiratory infections is the use of antimicrobial molecules to control bacterial pathogens. This can participate in the emergence and shedding of antimicrobial resistance that can threaten animal as well as human health. Appeasing pheromones with their capacity to reduce stress and thus their ability to preserve the functions of the immune system have been proposed to reduce the use of antimicrobial substances. In this study, we assessed the effect of appeasing pheromone administration on bovine health and performance during the fattening period. Zootechnical and health parameters and whole blood immune transcript expressions were measured over four weeks in bulls to determine the effect of the pheromone. We observed increased clinical signs on Day 8 (D8) and decreased clinical signs on D30 in bulls who received the pheromone and a higher expression of interleukin 8 transcripts in this group than in the control group on D8. Our results are overall in line with previous reports in livestock species. Further studies are needed to shed more light on the effect of appeasing pheromones and decipher their exact mechanisms of action.

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