EFFECT OF DIETARY YUCCA SHIDEGRIA EXTRACT (DEODORASE) ON ENVIRONMENTAL AMMONIA AND GROWTH PERFORMANCE OF CHICKENS AND RABBITS | ||||
| Egyptian Journal of Agricultural Research | ||||
| Article 24, Volume 76, Issue 4, December 1998, Page 1653-1660 PDF (2.09 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejar.1998.363515 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| ALY AL-BAR1; AHMED M. ISMAIL2; PETAR R. CHEEKE1; KHALED M. MANSOUR3; EMAN M. ABO-EITA3 | ||||
| 1Oregon State University, Corvallis, OR, 97331 | ||||
| 2Animal Production Research Institute, Agricultural Research Centre, Dokki, Giza, Egypt Oregon State University, Corvallis, OR, 97331 | ||||
| 3Animal Production Research Institute, Agricultural Research Centre, Dokki, Giza, Egypt | ||||
| Abstract | ||||
| Experiments with weanling rabbits and Leghorn replacement pullets were condusted to determine the effect of dietary Yucca extract (YE) on atmospheric ammonia and on performance. Both experiments were conducted in identical rooms of 4.9 x 4.9m floor space. Rabbit excreta were accumulated on a plastic sheet with sawdust bedding; the chicks had 10cm sawdust fitter. Data were analyzed using SAS. In Expt. 1, New-Zealand White (NZW) weanling rabbits were assigned to 4 treatments: Control (C), C + 1 25mg (YE)/Kg diet, C+250mg YE/Kg and C+YE sprayed on excreta. There were 3 cage replicates per treatment, with 8 rabbits per cage. The trial period was 50 days. A second replicate was conducted with the excreta from the first replicate retained. Ammon:a (NH3) was measured 35cm above and below the cages with Drager diffusion tubes on days 7, 14, 21, 35, 40 and 50 in rep 1 and 1, 10 and 35 in rep 2. Average daily gain (ADG) and feed/gain for C, C+1 25 YE, C + 250 YE were : 27.7a, 4.55a; 36.0b ,3.66b ,36.7 b 3.57b for rep 1 and 27.72, 4.05°, 33.5b, 3.72, 33.0b, 3.82b for rep 2, respectively. Treatments showed significant at (P<0.05). NH3 levels (ppm) on day 50 (rep 1) for C, C+125 YE, C+250 YE above and below the cages were: 26, 30, 7, 13, 6, 9, respectively, while, rep 2 on day 35, NH3 levels were : 15, 24, 5, 5.5, 7.5, 8 respectively. In the chick trial, 500 Leghorn pullet day-old chicks per rep were used, with 2 treatments (C, C+1 25 mg YE/Kg) with 2 reps per treatment. NH3 was measured at weekly intervals for 6 weeks, at heights of 0.3, 0.9 and 1.5m. GroWth was assessed by weighing 25 birds per pen at weekly intervals. After 6 weeks, body weight for C and C+YE were 349a and 395b, respectively (differences were significant at 5%•probability). NH3 levels (ppm) for C and C+YE were 21.3a and 6.7b, differences were highly significant (P<0.01). It is concluded that, dietary YE, under the experimental conditions, reduced atmospheric NH3 in poultry and rabbit houses, and increased growth rate. | ||||
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