Effect of different levels of rice bran processed by various techniques on performance of broiler chicks

Abstract

1. Rice bran processed by extrusion cooking, roasting or pelleting and treated with antioxidant was used in broiler starter and finisher diets at various concentrations up to 500 g/kg. 2. Extrusion cooking gave the best performance, followed by roasting, while non-significant differences were observed between raw and pelleted bran. 3. Increasing the amount of rice bran in broiler diets resulted in significantly negative effects on growth performance. Non-significant differences were observed in mortality and dressing percentage due to different processes and concentrations of rice bran in the diet. Organ weights were significantly higher on raw and pelleted rice bran as compared to extruded and roasted bran. Liver and heart weights significantly increased with increasing contents of rice bran above 200g/kg, while pancreas weight increased with an addition of rice bran. 4. Treating the rice bran with antioxidant up to 250ppm had non-significant effects on broiler performance.

Effects of extrusion of rice bran on performance and phosphorous bioavailability in broiler chickens

“…Published data on the broiler response to rice bran feeding are inconsistent primarily due to differences in fiber, protein and oil contents, lipid rancidity and other constituents [ 6 , 12 ]. For example, Mujahid et al [ 6 ] reported a decrease in performance and increases in organ weights of broiler chicks fed on diets containing rice bran. In another study, inclusion of 300 g/kg rice bran in broiler diets replacing corn, improved live weight gain, whereas feed conversion efficiency remained unaffected [ 24 ].…”

“…Rice bran, an important by-product of the rice milling industry, has the potential to be used as an alternative to grains in the poultry diet [ 1 ]. It contains 15 − 22 % oil, 11 − 17 % protein, 6 − 14 % fiber, 10 − 15 % moisture, and 8 − 17 % ash [ 2 ]; however, the presence of anti-nutritional factors such as phytic acid [ 3 ], trypsin inhibitor and hemagglutinin [ 4 ], high fiber content [ 5 ], and instability during storage [ 6 ] limit its use in poultry nutrition. Pancreatic hypertrophy [ 7 , 8 ], depressed intestinal amylase activity [ 8 ], and reduction in feed consumption [ 9 ] and growth [ 10 ] have been reported as the side effects of feeding raw rice bran to broilers.…”

“…Use of extruded rice bran in the diet of broilers, compared with raw and roasted rice bran, significantly increased fat digestibility which was attributed to lipase and trypsin inhibitor inactivation [ 1 , 15 ]. In addition, use of 10, 20 and 30 % extruded rice bran in broiler diets, compared with raw and roasted rice bran, increased weight gain and feed consumption [ 6 ]. Sayre et al [ 18 ] showed that feeding 600 g extruded rice bran/kg feed compared with raw rice bran, improved broiler weight gain and feed efficiency during the first two weeks of production, but after the second week, the performance of chicks fed the extruded rice bran was depressed.…”

Effects of extruded rice bran based diets on the performance, intestinal microbiota and morphology of weaned pigs

“…The use of 10%, 20% and 30% extruded rice bran in broiler diets, compared with raw and roasted rice bran, increased weight gain and feed consumption (Mujahid et al 2004). Similarly, previous research indicated that feeding of extruded rice (cooked rice) had the ability to protect young pigs against diarrhoea, increase CATTD (coefficient of total tract apparent digestibility) and average daily gain (ADG) (Mathews et al 1999;Pluske et al 2003;Mateos et al 2006).…”

Effects of feruloyl esterase, non-starch polysaccharide degrading enzymes, phytase, and their combinations on in vitro degradation of rice bran and nutrient digestibility of rice bran based diets in adult cockerels

“…However, the results are limited and inconsistent (Deniz et al, 2007; Farrell and Martin, 1998; 58 Martin and Farrell, 1998;Mujahid et al, 2004). 59…”