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A. ŞARA; M. BENŢEA; ALINA NICULA; ANCA BACIU; L. CLAPA
Lucrări științifice zootehnie şi biotehnologii, 10/2023, Volume: 42, Issue: 1Journal Article
The goal of this study was the knowledge of avistim’s influence administered in laying hens diet on the production performances, egg quality and the carotene content of eggs. The researches have been made on a number of 162 laying hens, hybrid Isa Brown, assigned in 3 batches of 54 hens/batch. In the feed of batch 2 (E) was added avistim premix 1 % and in the feed of batch 3 (E) was added avistim premix 2 %. The experimental period was 5 weeks, representing the second laying stage (age 56-61 weeks) following: laying intensity, the average egg weight, the fodder consumption per egg. To establish egg’s quality, at the end of trial had been determined: egg structure, egg-shell quality, intensity of yolk’s color and the carothenes content (La Roche method). The use of avistim determined the improvement of laying intensity with 3.86% at batch 3E, the improvement of egg weight with 6.08% at batch 2E and 1.23% at batch 3E, the reduction of fodder consumption per egg with 3.72% at batch 3E. Also we recorded the improvement of the weight and thickness of the egg-shell at the experimental batches, the improvement of yolk’s color and the improvement of carotene content at batches 2E and 3E. We recommend the use of avistim premix in laying hens diets for the improvement of the production performances and the yolk pigmentation, which can influence the commercial value of eggs.
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