Ileal and total tract digestibility in local (Mong Cai) and exotic (Landrace x Yorkshire) piglets fed low and high-fibre diets, with or without enzyme supplementation
Ileal and total tract digestibility in local (Mong Cai) and exotic (Landrace x Yorkshire) piglets fed low and high-fibre diets, with or without enzyme supplementation
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DOI：
10.1016/j.livsci.2009.06.002
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发表时间：
2009-12-01
影响因子：
1.8
通讯作者：
Lindberg, Jan Erik
中科院分区：
文献类型：
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作者：
Len, Ninh Thi;Ngoc, Tran Bich;Lindberg, Jan Erik
在 30 日龄断奶的两个品种的仔猪中，测定了低纤维和高纤维日粮（100 和 200 g/kg 中性洗涤纤维）的回肠和全消化道消化率，添加或不添加酶（纤维素酶、β-葡聚糖酶、α-淀粉酶和蛋白酶的混合物）。这些品种有本地品种（MC 的纯种芒街品种）和外来品种（路易斯安那州长白品种 x 约克夏品种）。实验日粮以玉米粉、豆粕、鱼粉、木薯渣粉和米糠为基础。木薯渣粉和米糠是高纤维日粮中的主要纤维饲料。实验按照2×2×2析因、完全随机设计，重复4次，持续30天。通过分析从 60 日龄处宰的仔猪收集的回肠食糜来测量回肠表观消化率 (CIAD) 系数。通过分析实验结束前连续 5 天收集的粪便样本来测量总肠道表观消化率 (CTTAD) 系数。 MC和LY间高纤维日粮中有机质、粗蛋白、粗纤维、中性洗涤纤维、酸性洗涤纤维和氨基酸的CIAD和CTTAD均低于低纤维日粮(P<0。05),而营养素的CTTAD则MC高于LY(P
Ileal and total tract digestibility of low and high-fibre diets (100 and 200 g/kg neutral detergent fibre), with or without enzyme supplementation (mixture of cellulase, beta-glucanase, alpha-amylase and protease) was determined in piglets of two breeds weaned at 30 days of age. The breeds were local (pure-breed Mong Cai, MC) and exotic (Landrace x Yorkshire, LY). The experimental diets were based on maize meal, soybean meal, fish meal, cassava residue meal, and rice bran. Cassava residue meal and rice bran were the main fibrous feeds in the high-fibre diet. The experiment was arranged according to a 2 x 2 x 2 factorial, completely randomized design with 4 replications, and lasted for 30 days. The coefficient of ileal apparent digestibility (CIAD) was measured by analyzing ileal digesta collected from piglets killed at 60 days of age. The coefficient of total tract apparent digestibility (CTTAD) was measured by analyzing faecal samples collected for 5 consecutive days immediately before the experiment finished. The CIAD and CTTAD of organic matter, crude protein, crude fibre, neutral detergent fibre, acid detergent fibre and amino acids in the high-fibre diet were lower than in the low-fibre diet (P0.05) between MC and LY, while the CTTAD of nutrients was higher for the MC than for LY (P