Abstract
Egg production of quails depends on quality of ration. Nutrient manipulation by chromiun inclusion in ration is a possible way to improve production. It is known that chromium mineral in form of GTF in blood has a role not only in enhancement of glucose entering cells through improvement of insulin activity but also in metabolism of lipid and synthesis of protein and elimination of heat stress to improve egg production. This study aimed at assessing egg production of quails fed ration containing chromium-yeast. Sixty-four quails aged 40 days were used. A completely randomized design with 4 treatments and 4 replication was applied in this study. Treatment consisted of commercial ration + Cr 0 ppm (R1), commercial ration + Cr 0.5 ppm (R2), commercial ration + Cr 1 ppm (R3), and commercial ration+ Cr 1.5 ppm (R4). Measurements were taken on feed intake, egg weight, egg mass production, hen day, feed conversion rate, egg index, and egg shell thickness. Results showed that A ration containing organic chromium as much as 1,5 ppm did not affect feed intake , egg production, egg weight , and eggshell thickness, however lowered feed conversion rate by up to 32.25% from that of control. Supplementation of 0,5 ppm chromium in the ration lowered the value of eggs index in the fourth week.
Highlights
Egg production of quails depends on quality of ration
It is known that chromium mineral in form of glucose tolerance factor (GTF) in blood has a role in enhancement of glucose entering cells through improvement of insulin activity and in metabolism of lipid and synthesis of protein and elimination of heat stress to improve egg production
This study aimed at assessing egg production of quails fed ration containing chromium-yeast
Summary
Temperatur lingkungan kandang pada siang hari rata-rata mencapai 30,55oC dan kelembapan 64,46%. Penelitian ini menggunakan rancangan acak lengkap (RAL) yang terdiri atas 4 perlakuan dengan 4 ulangan, dimana setiap ulangan terdiri atas 4 ekor puyuh. Burung puyuh betina (Coturnix-coturnix japonica) lokal yang digunakan sebanyak 64 ekor berumur 6 minggu (periode awal bertelur). Puyuh ditimbang lalu ditempatkan di kandang sesuai rancangan acak lengkap. Pengaturan suhu lingkungan kandang siang hari dilakukan dengan menggunakan pemanas listrik dan ventilasi dikurangi sehingga suhu lingkungan tertinggi pada siang hari mencapai 30,8oC. Pengumpulan produksi telur puyuh dilakukan setiap pagi pada pukul 06.00 sebelum pemberian pakan dalam periode 1 minggu. Peubah lainnya yang diukur adalah indeks kualitas telur, konsumsi ransum dan konversi ransum yang diukur setiap minggu selama 4 minggu percobaan.
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