Иммунитет крупного рогатого скота: практический подход к иммунологии и вакцинологии

КЛЮЧЕВЫЕ МОМЕНТЫ

• ©) Ona контроля РЗ КРС необходим целостный подход, направленный Ha повышение резистентности хозяина, снижение или устранение стрессовых факторов, связанных с содержанием и окружающей средой, а также уменьшение воздействия респираторных патогенов.

• ©) Правильное управление колострумом имеет решающее значениедля обеспечения адекватной передачи пассивного иммунитета, ключевого компонента профилактики РЗ КРС у молодых телят. Вакцинация матери может улучшить качество колострума.

• Е] Материнский иммунитет иногда может супрессировать иммунный ответ на вакцинацию. Вмешательство зависит от возраста теленка, уровня материнских антител на момент вакцинации, целевых патогенов, типа вакциныи способа ее введения. В целом материнские антитела скорее всего будут вмешиваться в ответ на вакцинациюв течение первых 2 недель жизни теленка.

• Е] вакцинация и отъем заблаговременно до продажи (предварительная подготовка) могут эффективно сократить число случаев РЗ КРС у мясного скота, но производители, применяющие технологию выращивания телят на подсосе, должны осознавать определенную выгоду от этой практики, если они хотят проводить предварительную подготовку.

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