Performance and Digestive Tract Development of Young Broiler Chickens Fed Mash Basal Diet Supplemented With Rice Hulls or Wheat Pollard at Different Levels

Abstract

ABSTRAKSebuah penelitian dilakukan untuk mengetahui pengaruh suplementasi sumber polisakarida nonpati (NSP) tidak-larut yang berbeda pada level 0, 20, 40, 60 g/kg terhadap performan dan perkembangan saluran pencernaan ayam broiler muda (doc-21 d). Hasil penelitian menunjukkan bahwa tidak ada interaksi antara sumber dan level NSP tidak-larut pada setiap variabel yang diukur. Efek signifikan hanya didapatkan pada level NSP tidak-larut. Ayam broiler muda yang diberi ransum bentuk mash yang disuplementasi dengan 6% NSP tidak-larut menurunkan pertambahan berat badan (P<0,05) dan memberikan rasio pertambahan berat badan:konsumsi yang jelek (P<0,01). Ransum tidak berpengaruh signifikan pada konsumsi ransum (KR), berat relatif dari gizzard, jejunum-ileum, usus buntu, dan berat relatif pankreas. Level NSP tidak-larut mempengaruhi berat digesta saluran pencernaan dengan berat digesta jejunum-ileum (P<0,01) didapatkan tertinggi pada suplementasi 6% NSP tidak-larut. Berat kering digesta jejunum-ileum dan kadar air feses juga tidak dipengaruhi oleh ransum (P≥0,05). Hasil penelitian menunjukkan bahwa NSP tidak-larut dapat disuplementasikan pada ransum ayam broiler muda sampai dengan level 4%. Ada kemungkinan bahwa peningkatan performan ayam broiler muda yang disuplementasi NSP tidak-larut sampai level 4% adalah karena meningkatnya KR dan kondisi usus yang lebih baik. Suplementasi NSP tidak-larut tidak menghasilkan dampak yang kuat karena ransum diberikan dalam bentuk mash. Kata kunci : NSP tidak-larut ,performan broiler, konsumsi ransum, berat gizzard relatif ABSTRACTAn experiment was conducted to determine the effect of different insoluble non-starch polysaccharides (NSP) sources supplementation at levels 0, 20, 40, 60 g/kg on performance and digestive tract development of young broilers (doc-21 d). Results showed that there were no interactions between insoluble NSP sources and levels at any variable measured. Only levels of insoluble NSP had significant effect. Young broilers fed mash basal diet supplemented with 6% insoluble NSP decreased body weight gain (P<0.05) and impaired gain-to-feed ratio (P<0.01). Diets did not have a significant effect on feed intake (FI), in addition to the relative weight of gizzard, jejunum-ileum, caeca, and pancreas. Levels of NSP affected the weight of gastrointestinal digesta with jejunal-ileal digesta was found to be the highest (P<0.01) in 6% insoluble NSP supplementation. Dry matter of jejunal-ileal digesta and excreta moisture also did not significantly affected by diets (P≥0.05). The present study demonstrated that the insoluble NSP can be supplemented to young broilers diet up to 4%. It is likely that increased performance of young broilers supplemented with insoluble NSP up to 4% was due to increase FI and a better gut environment. The supplementation of insoluble NSP did not produce strong impact considering that the diets were given in mash form.

The way insoluble fiber incorporated in the diet changes its physiological response

“…The result showed that the weight of the gizzard, small intestine, and pancreas was not affected by treatment diets. This result was similar to Hartini et al (2013), who reported that the GIT weight including gizzard, pancreas, and part of the small intestine was not affected by the addition of rice hull up to 6% in the diet based on corn and soybean. Sadeghi et al (2015) and Incharoen (2013) also reported no increase in gizzard weight by the inclusion of rice hulls at 3% and 10%, respectively.…”