Abstract
The profile of hematology and broiler daily body weight gain which treated with heat stress at different cage temperatureABSTRACT. A research have been conducted to find the impact of heat stress at 3 level of cage temperature on hematology profile and broiler daily body weight gain. Sixteen broilers (strain Cobb) at the age of 20 days were randomly divided to 4 groups. First group was control group that treated without given heat stress (KL). Second, third, and fourth groups were treated with heat stress in cages with temperature, respectively 33 ± 1oC, 36 ± 1oC, and 39 ± 1oC. Heat stress was given 4 hours daily during 7 days consecutively. The result indicated that cage temperature up to 36 ± 1oC has not significantly affected hematology profile and broiler daily body weight gain. The impact of increasing temperature have been found at cage temperature of 39 ± 1oC after 7 days of treatment, which were the increasing number of leucocytes, decreasing number of erythrocytes, and decreasing of broiler daily body weight gain. The broiler of the age above 20 to 27 days that exposed heat stress during 4 hour per day in the cage temperature of 39 ± 1oC can obtain heat stress in serious level.
Highlights
Ayam dapat berproduksi secara optimum bila faktor-faktor internal dan ekternal berada dalam batasan-batasan normal yang sesuai dengan kebutuhan hidupnya
A research have been conducted to find the impact of heat stress at 3 level
at the age of 20 days were randomly divided to 4 groups
Summary
Pemberian cekaman panas dilakukan dengan cara meningkatkan suhu dalam kandang secara perlahan dimulai kira-kira dari jam 10.00 pagi dan dipertahankan stabil pada suhu perlakuan selama 4 jam. Hewan yang digunakan dalam penelitian ini adalah ayam broiler betina jenis pedaging galur Cobb berumur 20 hari. Perlakuan yang diberikan terdiri dari 4 perlakuan berupa peningkatan suhu dalam kandang (cekaman panas), yaitu: (1). Kontrol yaitu tanpa diberi perlakuan cekaman panas (mengikuti suhu harian selama penelitian). Kondisi suhu dan kelembaban harian pada kandang kontrol selama penelitian pada siang hari adalah 26,928,7oC dan kelembaban 64,6-70,9%. Penimbangan bobot badan ayam dilakukan pada hari ke-1, 3, 5, dan ke-7 pelaksanaan penelitian. Pengambilan sampel darah dilakukan pada hari ke-7 pelaksanaan penelitian. Pengambilan darah pada masing-masing perlakuan dilakukan setelah suhu dalam kandang percobaan sama dengan suhu lingkungan (2 jam setelah heater dimatikan). Perhitungan statistik dilakukan dengan menggunakan bantuan program Minitab 14 for Windows
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