Effect of Levels of Sand Grit in Diet on Nutrient Digestibility, Internal Organs Parameters and GIT Relative Length of Broiler Chicken
Journal Title: IOSR Journal of Agriculture and Veterinary Science (IOSR-JAVS) - Year 2018, Vol 11, Issue 9
Abstract
The study was designed to evaluate the effect of sand grit inclusion on nutrient digestibility, internal organs parameters and GIT relative length of finisher broiler chicken fed high fiber diet. It was conducted on the backdrop of sourcing for alternative feed ingredient and that sand grit will aid the digestion of high fiber diet by finisher broiler chicken. Fiber level was deliberately boosted in the diet of broiler chicken by incorporating rice offal at 15% level. Sand grit of sizes 0.5mm to 1.00mm in diameter was added to the diet. There were five (5) dietary treatments in which sand grit was added at graded levels of 0%(T1), 0%(T2), 1.5%(T3), 2.0%(T4) and 2.5%(T5) and rice offal included at levels of 0%(T1) and 15% each for T2 to T5, in a completely randomized experiment. Two hundred brooded broiler chicks were used for the feeding trial which lasted for 35 days. Each treatment was replicated four (4) times and each replicate contain ten (10) birds. The birds on the control treatment had higher dry matter retained than those fed T2, while the experimental units that received sand grit in diet (T3 to T5) had higher dry matter retained than either T1 or T2 birds. This trend was maintained for the digestibility of individual nutrients such as crude protein, crude fiber, and most other nutrients considered, with the experimental unit that received 1.5% (T3) grit diet showing better digestibility for all the nutrients. The birds fed T4 and T5 diets recorded significantly (p<0.05) lower gall bladder weight than the rest treatment groups. The proventriculus, the GIT, small intestine and large intestine, all recorded higher relative weight at 2.0% sand grit level and above. Also the experimental units that received sand grit in diet (T3, T4, and T5), recorded significantly (p<0.05) higher relative length of large intestine than the rest treatment groups. It was concluded that adding sand grit in the diet of finisher broiler chicken aided in degrading fibrous materials in the diet, exerts extra demand for the content of the gall bladder and created digestive pressure on the proventriculus, water retention in the large intestine and heavier GIT at 2.0% inclusion level and above.
Authors and Affiliations
Agidi C. N. , Carew S. N, Abang F. B.
Keywords
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- EP ID EP395776
- DOI 10.9790/2380-1109020710.
- Views 139
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