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Влияние различных световых режимов в период предубойной выдержки птицы на показатели мясной продукции

Влияние различных световых режимов в период предубойной выдержки птицы на показатели мясной продукции

Abstract

Paper describes various light modes influence on broilers (cross Kobb-500) meat production indicators during the prelethal period. Experiment was executed in the conditions of Poultry “Reftinskaya” in February April, 2016. Three groups of birds have been created up to 52 000 heads in everyone. One group was the control group, the other two groups were experimental. Broilers cultivation duration has made 39 days. Conditions of keeping bird experimental groups were identical with observance optimum microclimate zoohygienic parameters. Analysis of broilers prelethal mass has shown that broilers party mass higher losses in 2 hours prior to catching and right after it were in control group and have made 520 kg in comparison with experimental groups. Bird doesn’t have time to calm down for a 30-minute period of low light intensity to 1 lx before catching, it starts to move actively at the time of catching it out of the cage, thus wasting energy and losing mass. Live weight losses were absent at catching birds of first experimental group which contained with lessening white light to 1 lx for 2 hours prior to slaughter. Also, live weight losses were absent at catching broilers of second experimental group, which has been applied LED-lighting with intensity of 1lx for 2 hours before catching. At decrease of light the bird calms down, falls asleep and when catching behaves more quietly. At blue lighting which was applied to the second experimental group birds practically see nothing and quicker fall asleep. Standard white lighting with intensity 1 lx in 2 hours prior to broilers catching in comparison with the control mode (standard white lighting with intensity 1 lx in 30 minutes prior to catching) and with applying LED-source (1 lx in 2 hours prior to catching) exerts optimum impact on a birds’ stress sensitivity and promotes broilers prelethal live mass losses reduction andincrease number of first grade carcasses.

Рассматривается влияние различных световых режимов в предубойный период на показатели мясной продукциицыплят-бройлеров (кросс Кобб-500). Эксперимент выполнен в условиях ОАО «Птицефабрика „Рефтинская“» в февра-ле апреле 2016 г. Было сформировано три группы птиц: контрольная и две опытные по 52 000 голов в каждой. Про-должительность выращивания бройлеров 39 дней. Условия содержания птицы подопытных групп были одинаковымис соблюдением оптимальных зоогигиенических параметров микроклимата. Анализ предубойной массы цыплят-брой-леров показал, что более высокие потери массы партии бройлеров за 2 ч до отлова и сразу после него были в контроль-ной группе 520 кг в сравнении с опытными. Птица за 30-минутный период снижения интенсивности освещения до1 лк перед отловом не успевает успокоиться, начинает активно двигаться в момент отлова ее из клетки, затрачиваяэнергию и теряя массу. При отлове птицы 1-й опытной группы, содержащейся с убавленным белым светом до 1 лк за2 ч до начала забоя, и бройлеров 2-й опытной группы, где было применено светодиодное освещение (интенсивность1 лк) за 2 ч до отлова, потери живой массы отсутствовали. Птица при убавлении света успокаивается, засыпает и приотлове ведет себя более спокойно. При синем освещении (2-я группа) птица практически не видит и быстрее засыпает.Таким образом, стандартное белое освещение с интенсивностью 1 лк за 2 ч до начала отлова цыплят-бройлеров посравнению с контрольным режимом (стандартное белое освещение интенсивностью 1 лк за 30 мин до отлова) и с при-менением светодиодного источника (1 лк за 2 ч до отлова) оказывает наиболее благоприятное влияние на стрессочув-ствительность птицы, способствует уменьшению потерь живой массы цыплят-бройлеров перед убоем и повышениювыхода тушек 1-го сорта.

Keywords

РЕДУБОЙНАЯ ВЫДЕРЖКА ЦЫПЛЯТ-БРОЙЛЕРОВ,ИНТЕНСИВНОСТЬ ОСВЕЩЕНИЯ,СВЕТОВОЙ РЕЖИМ,ПРЕД-УБОЙНАЯ МАССА БРОЙЛЕРОВ,СОРТНОСТЬ ТУШЕК,BROILER CHICKENS PRECRUSHING ENDURANCE,LIGHTING INTENSITY,LIGHT MODE,BROILERS PRELETHAL MASS,CARCASSES RATING

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold