Effect of Electrolytic Material Feeding on Blood and Carcass Traits of Broiler under Intense Heat Condition in Summer

Abstract

This study was conducted to investigate the effect of feeding the electrolytic materials on blood and carcass traits of broiler during transportation exposed under intense heat condition in summer. The broilers were selected on the day when the outside temperature was about 32℃ to provide heat stressed environment. Broilers reared for 33 d were selected and fed with the electrolytic materials (NaHCO 3, NaCl, KCl) for 2 days. Treatments were as follows; feeding the underground water for control, NaHCO 3 (1.0%) + NaCl (0.5%) for treament 1, KCl (0.5%) + NaCl (0.5%) for treatment 2, KCl (1.0%) + NaCl (0.5%) treatment 3, KCl (0.5%) + NaHCO 3 (1.0%) + NaCl (0.5%) for treatment 4 and KCl (1.0%) + NaHCO 3 (1.0%) + NaCl (0.5%) for treament 5. pH of chicken meat increased for treatments group of electrolytic material, especially, that of treatment 3 was highest when compared to the other treatments. The frequency rate (%) of 1 + quality grade were 33.3, 60.0 and 83.3% at control, treatment 3, 4 and treatment 5, respectively. Occurrence rates of PSE were 50% for control and 13.3% for treatment 5. Corticosterone increased at the post-harvest period compared to the pre-harvest period of broiler and have small disparity between pre-and post-harvest only except treatment 3 when compared to control. pCO 2 partial pressure of blood at the pre-harvest period was low in all treatments by heat stress, the disparity value of control was high for control, and those of treatment 4 and 5 were low compared to other treatments.

Analysis of Marketing Performances according to Raising Environment in Broilers

“…그러나 여름철은 95.36%로 가장 낮은 생존율을 보 였는데, 이러한 결과는 여름에 고온 다습한 외기 환경 때문 으로 사료된다. 게다가 우리나라는 1900년대 초반보다 2000 년의 겨울이 30일 정도 짧아졌고, 여름은 20일 정도 길어졌 으며, 최근 들어 그 속도가 빨라지고 있다(Chae et al, 2012). 그리고Chang(1994)은 환기율을 높이는 것만으로는 열병을 방지할 수 없으며, 어떤 형태로든 보조 냉각 장치가 필요하 다고 보고한 바도 있다.…”