Effect of type of cereal, heat processing of the cereal, and inclusion of fiber in the diet on productive performance and digestive traits of broilers.

We studied the influence of cereal, heat processing of the cereal, and inclusion of additional fiber in the diet on the productive performance and digestive traits of broilers from 1 to 21 d of age. Twelve treatments were arranged factorially, with 2 cereals (corn and rice), 2 heat-processing treatments of the cereals (raw and cooked), and 3 sources of fiber (none, 3% oat hulls, and 3% soy hulls). Each treatment was replicated 6 (trial 1) or 3 (trial 2) times. Growth traits were recorded in both trials; digestive traits were measured in trial 1, and total tract apparent retention (TTAR) of nutrients was determined in trial 2. Feeding rice improved TTAR of all nutrients and feed conversion from 1 to 21 d of age (P <or= 0.001). In addition, feeding rice increased the pH of gizzard digesta (P <or= 0.001) and reduced the relative weight (RW) of most digestive organs. Heat processing had little effect on the growth or size of digestive organs but improved the TTAR of most nutrients in the corn diets. Fiber inclusion improved the TTAR of most nutrients, BW gain (P <or= 0.01), and feed conversion (P <or= 0.001) from 1 to 21 d of age. In addition, fiber inclusion increased the RW of the gizzard (P <or= 0.001), ceca (P <or= 0.05), and digestive tract (P <or= 0.01) and reduced digesta pH (P <or= 0.001) and the length of the small intestine (P <or= 0.05). The effects of hulls on RW of the gizzard and on the TTAR were more pronounced for the rice diets than for the corn diets. We concluded that rice can be used successfully in broiler diets and that heat processing of the cereal does not have any beneficial effect on broiler performance. The inclusion of moderate amounts of fiber in low-fiber diets might improve chick performance at early ages by reducing gizzard pH and improving the utilization of nutrients. Therefore, young broiler chicks might require a minimal amount of fiber in the diet.

[1]  R. Lázaro,et al.  The effect of inclusion of oat hulls in piglet diets based on raw or cooked rice and maize , 2007 .

[2]  A. Uhlen,et al.  Interaction between barley cultivars and growth temperature on starch degradation properties measured in vitro , 2006 .

[3]  J. Karkalas,et al.  Hydrolysis of native starches with amylases , 2006 .

[4]  C. Pedersen,et al.  Intestinal morphology and enzymatic activity in newly weaned pigs fed contrasting fiber concentrations and fiber properties. , 2006, Journal of animal science.

[5]  Defa Li,et al.  Effects of extrusion of corn on growth performance, nutrient digestibility and short-chain fatty acid profiles in the hindgut of weaned piglets , 2006, Archives of animal nutrition.

[6]  E. Moran.  Anatomy, Microbes, and Fiber: Small Versus Large Intestine , 2006 .

[7]  R. D. Miles,et al.  Effect of antibiotic growth promoters on broiler performance, intestinal growth parameters, and quantitative morphology. , 2006, Poultry science.

[8]  M. Latorre,et al.  Inclusion of oat hulls in diets for young pigs based on cooked maize or cooked rice , 2006 .

[9]  M. Choct,et al.  Role of Insoluble Fiber on Gizzard Activity in Layers , 2005 .

[10]  R. S. Beyer,et al.  Effect of Gelatinizing Dietary Starch Through Feed Processing on Zero- to Three-Week Broiler Performance and Metabolism , 2005 .

[11]  M. Latorre,et al.  Heat processing of cereals in mash or pellet diets for young pigs , 2004 .

[12]  M. Gracia,et al.  Feeding regimen and enzyme supplementation to rye-based diets for broilers. , 2004, Poultry science.

[13]  D. Sklan,et al.  The effect of dietary fibre on the small intestines and apparent digestion in the turkey , 2003, British poultry science.

[14]  J. Pluske,et al.  A review of interactions between dietary fibre and the intestinal mucosa, and their consequences on digestive health in young non-ruminant animals , 2003 .

[15]  M. Garcia,et al.  Heat processing of barley and enzyme supplementation of diets for broilers. , 2003, Poultry science.

[16]  Å. Krogdahl,et al.  Effects of oat hulls and wood shavings on digestion in broilers and layers fed diets based on whole or ground wheat , 2003, British poultry science.

[17]  M. Garcia,et al.  Effect of enzyme addition to wheat-, barley- and rye-based diets on nutrient digestibility and performance of laying hens , 2003, British poultry science.

[18]  A. Ribeiro,et al.  Effects of corn particle size and physical form of the diet on the gastrointestinal structures of broiler chickens , 2003 .

[19]  H. Classen,et al.  Effects of micronization, tempering, and flaking on the chemical characteristics of wheat and its feeding value for broiler chicks , 2003 .

[20]  D. Baker,et al.  Growth performance of different breed crosses of chicks fed diets with different protein and energy sources. , 2003, Poultry science.

[21]  M. Gracia,et al.  The Feasibility of Using Nutritional Modifications to Replace Drugs in Poultry Feeds , 2002 .

[22]  Y. Noy,et al.  Nutrient use in chicks during the first week posthatch. , 2002, Poultry science.

[23]  B. Svihus,et al.  Effect of oat hulls on performance, gut capacity and feed passage time in broiler chickens , 2001, British poultry science.

[24]  K. E. Bach Knudsen,et al.  The nutritional significance of ''dietary fibre'' analysis , 2001 .

[25]  M. R. Reddy,et al.  Laying Performance of Broiler Breeder Chickens Fed Various Millets or Broken Rice as a Source of Energy at a Constant Nutrient Intake , 2000, Tropical Animal Health and Production.

[26]  Chandramoni,et al.  Efficiency of utilisation of energy from maize- and broken rice-based diets in old White Leghorn and Rhode Island Red laying hens. , 1999, British poultry science.

[27]  Y. Noy,et al.  Different Types of Early Feeding and Performance In Chicks and Poults , 1999 .

[28]  B. Fancher,et al.  Feed Processing Using the Annular Gap Expander and Its Impact on Poultry Performance , 1996 .

[29]  B. Eggum,et al.  The influence of dietary fibre source and level on the development of the gastrointestinal tract, digestibility and energy metabolism in broiler chickens , 1996, British Journal of Nutrition.

[30]  G. Pesti.  Nutrient requirements of poultry , 1995 .

[31]  D. Sklan,et al.  Nutritional effects of expansion and short time extrusion on feeds for broilers , 1995 .

[32]  M. Vranješ,et al.  The influence of extruded vs. untreated barley in the feed, with and without dietary enzyme supplement on broiler performance , 1995 .

[33]  I. Nir,et al.  Effect of particle size on performance. 3. Grinding pelleting interactions. , 1995, Poultry science.

[34]  I. Nir,et al.  Effect of grain particle size on performance. 2. Grain texture interactions. , 1994, Poultry science.

[35]  S. Panigrahi,et al.  Evaluation of the nutritive value of yellow rice in rats and broiler chicks , 1992, British Journal of Nutrition.

[36]  P. V. Soest,et al.  Methods for dietary fiber, neutral detergent fiber, and nonstarch polysaccharides in relation to animal nutrition. , 1991, Journal of dairy science.

[37]  J. Rupnow,et al.  Influence of Infrared (Micronization) Treatment on the Nutritional Value of Corn and Low- and High-Tannin Sorghum , 1991 .

[38]  W. Horwitz.  Official Methods of Analysis , 1980 .

[39]  B. A. Young,et al.  Evaluation of Acid-Insoluble Ash as a Natural Marker in Ruminant Digestibility Studies1 ,2 , 1977 .

[40]  D. G. Valencia,et al.  The effects of feeding rice in substitution of corn and the degree of starch gelatinization of rice on the digestibility of dietary components and productive performance of young pigs. , 2008, Journal of animal science.

[41]  B. Svihusa,et al.  Effect of starch granule structure , associated components and processing on nutritive value of cereal starch : A review , 2005 .

[42]  W. Janssen.  6 – INFLUENCE OF FIBRE ON DIGESTIBILITY OF POULTRY FEEDS , 1989 .

[43]  W. Bryden,et al.  Improvement of raw potato starch digestion in chickens by feeding oat hulls and other fibrous feedstuffs , 1987 .

[44]  G. E. Duke.  Alimentary Canal: Secretion and Digestion, Special Digestive Functions, and Absorption , 1986 .

[45]  W. Janssen.  3 – INFLUENCE OF FIBRE ON DIGESTIBILITY OF POULTRY FEEDS , 1985 .