Izvorni znanstveni članak
Sources of variance of energy digestibility in corn-soy poultry diets and the effect on performance : starch, protein, oil and fiber
Thomas H. D' Alfonso
Sažetak
Broiler diets were formulated for 93 corn batches, each divided in half and one supplemented with xylanase, amylase and protease enzymes (Avizyme™ 1502, Danisco Animal Nutrition). Feed conversion ratio (FCR) ranged between 1.43 and 2.67. Average = 1.81, s.d. = 0.30. Weight ranged between 680 and 1301 g. Average = 909, s.d. = 114. Enzyme addition improved FCR to 1.73 and reduced variance by 30% (P < 0.01). Corn and digesta samples were analysed for starch, protein, oil, and gross energy content, and ileal digestible energy (IDE) averaged 2831 kcal/kg (s.d. 486 kcal/kg). Digestibility of starch, protein, oil and other fractions (fiber, etc.) were found to be 86%, 82%, 90% and 12%, respectively. With enzyme addition, IDE was raised by an average of 5% to 2975 kcal/kg, and digestibility coefficients were raised to 91%, 83%, 91%, and 14% for starch (+5%), protein (+1%), oil (+1%) and other sources (+2%), respectively.
Ključne riječi
Hrčak ID:
2128
URI
Datum izdavanja:
3.5.2005.
Posjeta: 1.677 *