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Penampilan Produksi Ayam Broiler yang Diberi Bacillus circulans dan Bacillus sp. Selama Periode Pemulihan Setelah Pembatasan Ransum A Azis; F Manin; . Afriani
Media Peternakan Vol. 33 No. 1 (2010): Media Peternakan
Publisher : Faculty of Animal Science, Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (263.319 KB)

Abstract

The present study was designed to investigate the efficacy of Bacillus circulans and Bacillus sp. as probiotic during realimentation period on performance of broiler chickens. Three hundred of 7 days-old unsexed broiler chicken of Cobb commercial strain were used in the experiment. The treatments were: control ration was fed ad libitum (P-0), ration with energy restriction at 1.5xBW0.67EM kcal/day without (P-1) and with (P-2) probiotic supplementation during realimentation period, and ration with energy restriction at 2.25xBW0.67EM kcal/day without (P-3) and with (P-4) probiotic supplementation during realimentation period. Feed restriction was applied from 7 to 14 days of age. The experiment was arranged as a completely randomized design with 5 treatments and 6 replications. The results showed that feed intake and body weight gain of chickens submitted to early feed restriction on P-1, P-2, P-3 and P-4 were significantly lower (P < 0.05) than that of chicken fed control diet. During realimentation period, body weight gain of chicken given P-1 and P-2 was lower (P < 0.05) than those obtained from P-3, P-4 and P-0 from 14 to 28 days of age. Compensatory growth only occur during the 28 to 35 days of age on P-4 and had similar performance with control at age of 42 days. It was concluded that energy restriction 2.25xBW0.67EM kcal/day for 7 days (7 to 14 days of age) with supplementation of probiotic B. circulans and Bacillus sp. (P-4) during realimentation period showed similar compensatory growth and body weight, but production index and feed cost better than control.   Key words: feed restriction,  probiotic, realimentation  
Pertumbuhan Kompensasi dan Efisiensi Produksi Ayam Broiler yang Mendapat Pembatasan Waktu Makan A Azis; H Abbas; Y Heryandi; E Kusnadi
Media Peternakan Vol. 34 No. 1 (2011): Media Peternakan
Publisher : Faculty of Animal Science, Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (164.179 KB) | DOI: 10.5398/medpet.2011.34.1.50

Abstract

The present study was designed to investigate the effect of feeding time restriction on compensatory growth and production efficiency of broiler chickens. Four hundred of 7 days-old unsexed broiler chicken of Lohmann commercial strain were used in the experiment. The treatments were: bird fed ad libitum as a control treatment (R-0); bird had free access to feed during two periods of 2 hours (08:00-10:00 and 16:00-18:00) from 7-14 days of age (R-1) and 7-21 days of age (R-2); bird had free access to feed during two periods of 4 hours (08:00-12:00 and 16:00-20:00) from 7-14 days of age (R-3) and 7-21 days of age (R-4). The treatments were arranged in a completely randomized design with 4 replications. Feed intake and body weight gain of chicken exposed to feeding time restriction on R-1, R-2, R-3 and R-4 were lower (P < 0.01) than those of chicken fed ad libitum. There were no significant different on feed intake and body weight gain during realimentation period. Compensatory growth occured on R-2 and R-4 during the 28 to 42 days of age and similar body weight  with control at age 42 days. Feed conversion ratio on R-2 and R-4 were lower (P < 0.01) feeding time restriction (7-21 days) and realimentation period (28-35 days). It was concluded that feeding time restriction for 8 hours per day from 7 to 21 days of age indicated compensatory growth and similar body weight and had better feed cost and production index than that of control.
Thyroid Hormone and Blood Metabolites Concentrations of Broiler Chickens Subjected to Feeding Time Restriction A Azis; H Abbas; Y Heryandi; E Kusnadi
Media Peternakan Vol. 35 No. 1 (2012): Media Peternakan
Publisher : Faculty of Animal Science, Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (417.898 KB) | DOI: 10.5398/medpet.2012.35.1.32

Abstract

The present study was conducted to determine the effect of feeding time restriction on thyroid hormone and blood metabolites concentration of broiler chickens during feed restriction and realimentation period. Four hundred of 7 days-old unsexed broiler chicken of Lohmann commercial strain were arranged in a completely randomized design with 5 treatments and analyzed based on ANOVA. The treatments were: chicks fed ad libitum as a control treatment (R-0); chicks had free access to feed during two periods of 2 h (08:00-10:00 and 16:00-18:00) from 7-14 d of age (R-1) and 7-21 d of age (R-2); chicks had free access to feed during two periods of 4 h (08:00-12:00 and 16:00-20:00) from 7-14 d of age (R-3) and 7-21 d of age (R-4). The treatments consisted of 4 replicates with 20 chicks each. During feeding time restriction from 7 to 21 d of age, thyroid hormone and albumin plasma concentration of R-2 and R-4 were lower (P3 and T4) and blood metabolite (albumin) decreased during feeding time restriction for 4 and 8 h per d from 7 to 21 d of age and it returns to normal during realimentation period.