生长育肥猪菜籽粕中氨基酸消化率的测定与预测

Determination and Prediction of Amino Acid Digestibility in Rapeseed Cake for Growing-Finishing Pigs.

作者信息

Tang Hui, Feng Ganyi, Zhao Jingfeng, Ouyang Qing, Liu Xiaojie, Jiang Xianji, Deng Menglong, Xie Zhengjun, Chen Fengming, Zhou Xihong, Li Rui, Yin Yulong

机构信息

Hunan Co-Innovation Center of Animal Production Safety, College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China.

Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China.

出版信息

Animals (Basel). 2024 Sep 25;14(19):2764. doi: 10.3390/ani14192764.

DOI:10.3390/ani14192764

PMID:39409713

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11482631/

Abstract

OBJECTIVE

The experiment was conducted to determine the apparent or standardized ileal digestibility (AID or SID) of crude protein (CP) and amino acids (AA) in 10 rapeseed cake samples fed to pigs, and to construct predictive models for the SID of CP and AA based on the chemical composition of rapeseed cakes.

METHODS

Twenty-two cannulated pigs (initial body weight: 39.8 ± 1.2 kg) were assigned to two 11 × 3 incomplete Latin square designs, including an N-free diet and 10 diets containing rapeseed cake. Each experimental period included 5 days of adaptation and 2 days of ileal digesta collection. Titanium dioxide (TiO) was added at 0.3% to all the diets as an indigestible marker for calculating the ileal CP and AA digestibility.

RESULTS

The coefficients of variation (CV) of the content of crude fat (EE), crude fiber (CF), neutral detergent fiber (NDF), acid detergent fiber (ADF), and total glucosinolates (TGS) in 10 samples of rapeseed cake were greater than 10%. The standardized ileal digestibility (SID) of crude protein (CP), lysine (Lys), methionine (Met), threonine (Thr), and tryptophan (Trp) in rapeseed cake was 73.34% (61.49 to 81.12%), 63.01% (41.41 to 73.10%), 69.47% (50.55 to 88.16%), 79.61% (74.41 to 87.58%), and 94.43% (91.34 to 97.20%), respectively. The best prediction equations for SID, SID, and SID were as follows: SID = 90.124 - 0.54NDF (R = 0.58), SID = 100.107 - 1.229NDF (R = 0.94), and SID = 151.012 - 2.990TGS (R = 0.57).

CONCLUSION

Overall, great variation exists among the 10 rapeseed cakes, and the NDF, TGS, and heating temperature can be used as the key predictors for the SID of CP and AA.

摘要

目的

本试验旨在测定10种菜籽饼粕样品中粗蛋白（CP）和氨基酸（AA）的表观回肠消化率（AID）或标准回肠消化率（SID），并基于菜籽饼粕的化学成分构建CP和AA的SID预测模型。

方法

将22头安装了瘘管的猪（初始体重：39.8±1.2 kg）分配到两个11×3不完全拉丁方设计中，包括无氮日粮和10种含菜籽饼粕的日粮。每个试验期包括5天的适应期和2天的回肠食糜收集期。在所有日粮中添加0.3%的二氧化钛（TiO）作为不可消化标记物，用于计算回肠CP和AA消化率。

结果

10个菜籽饼粕样品中粗脂肪（EE）、粗纤维（CF）、中性洗涤纤维（NDF）、酸性洗涤纤维（ADF）和总硫代葡萄糖苷（TGS）含量的变异系数（CV）均大于10%。菜籽饼粕中粗蛋白（CP）、赖氨酸（Lys）、蛋氨酸（Met）、苏氨酸（Thr）和色氨酸（Trp）的标准回肠消化率（SID）分别为73.34%（61.49至81.12%）、63.01%（41.41至73.10%）、69.47%（50.55至88.16%）、79.61%（74.41至87.58%）和94.43%（91.34至97.20%）。SID、SID和SID的最佳预测方程如下：SID = 90.124 - 0.54NDF（R = 0.58），SID = 100.107 - 1.229NDF（R = 0.94），SID = 151.012 - 2.990TGS（R = 0.57）。