List of Articles gastrointestinal tract

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  1 - Effects of Rice Hulls and Acidifier Supplementation on Growth Performance and Gut Physiology in Broiler Chickens
  S.  Banibugari M. Sedghi R.  Mirshekar A.H.  Mahdavi A.  Azarfar
  The experiment was conducted to study how adding rice hulls and an acidifier to the diet affected perform-ance, histomorphology, and microbial colonization in the gastrointestinal system of broiler chickens. A completely randomized design was used to test eight treatmen More

  The experiment was conducted to study how adding rice hulls and an acidifier to the diet affected perform-ance, histomorphology, and microbial colonization in the gastrointestinal system of broiler chickens. A completely randomized design was used to test eight treatments and five replications of 1000 day-old-male Arbor Acres broiler chickens (45±1 g). Dietary treatments included control (no additives 1-42 days), acidi-fier (control+0.1% acidifier from 1-42 days), RH10 (3% rice hull from 1-10 days and control diet from 11-42 days), RH10 + acidifier (3% rice hulls from 1-10 days and control diet+0.1% acidifier from 11-42 days), RH24 (3% rice hulls from 1-24 days and control diet from 25-42 days), RH24 + acidifier (3% rice hulls from 1-24 days and control diet+0.1% acidifier from 25-42 days), RH42 (3% rice hulls from 1-42 days) and RH42 + acidifier (3% of the rice hulls+0.1% acidifier from 1-42 days). Feed conversion ratio significantly decreased (P<0.05) in the RH24 + acidifier group compared with RH10 and control groups after 24 and 42 days. The RH42 + acidifierbirds had lower mortality than RH24+acidifier birds (P<0.05). Also, at 42 days of age, feeding RH42 + acidifier diet increased villus height/crypt depth (P<0.01). Acidifiers increased the Lactobacillus population in the small intestine of broiler chickens. The lowest gizzard pH was observed in birds fed 3% rice hulls from 0 to 42 days of age (P<0.05). In general, the addition of 30 kg/ton of rice hulls to the broiler feed, from 0 to 42 days of age, caused the highest possible weight gain and the lowest mortal-ity. Manuscript profile
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  2 - The Effects of Dietary Inclusion of Arginine and Rice Hull on Growth Performance, Immune Responses, Intestinal Morphology, Tibia Bone Mineral Content and Intestinal Microbial Population of Broiler Chickens
  M.  Abbasabadi S.M.  Hosseini H.  Naeimipour F.  Izadi Yazdanabadi
  Arginine and fibers may have positive effects on gastrointestinal tract and indirectly affect immune re-sponses, growth performance, intestinal morphology and microbial population. This study was conducted to evaluate the effects of dietary inclusion of arginine and ric More

  Arginine and fibers may have positive effects on gastrointestinal tract and indirectly affect immune re-sponses, growth performance, intestinal morphology and microbial population. This study was conducted to evaluate the effects of dietary inclusion of arginine and rice hull on growth performance, immune re-sponses, intestinal morphology and intestinal microbial population of broiler chickens. Three hundred and sixty male broiler chickens were randomly allocated into nine dietary treatments with four replications of 10 broiler chickens based on a factorial arrangement (3×3) in a completely randomized design. Experimen-tal treatments were including basal diets supplemented with arginine (90, 100, and 110% recommended levels), and fiber (0.00, 2.50, and 5.00%). Growth performance, immune responses, intestinal morphology, tibia bone mineral content and intestinal microbial population of broiler chickens were measured. The ef-fects of dietary inclusion of rice hull, arginine, and their interactions were significant on average daily gain (P<0.05) and feed conversion ratio (FCR) (P<0.05), so that highest gain and the lowest feed conversion ratio were observed in broiler chickens fed with highest levels of arginine (110.00%) and fiber (5.00%). Dietary supplementation of arginine progressively increased immune responses (P<0.05), while inclusion of rice hull increased villus height and crypt depth (P<0.05) and decreased the concentrations of calcium (P<0.05), phosphorous (P<0.05) and magnesium (P<0.05). The inclusion of arginine (P<0.05), and fiber (P<0.05) in higher levels increased Lactobacilli population (P<0.05). In total, higher levels of fiber (5.00%) and arginine (110.00%) improved the growth performance and are suggested in diet of broiler chickens for improving growth performance. Manuscript profile