间接量热法测定和预测妊娠母猪豆粕净能。

IF 2.4 2区 农林科学 Q1 AGRICULTURE, DAIRY & ANIMAL SCIENCE
Animal Bioscience Pub Date : 2025-06-01 Epub Date: 2025-02-27 DOI:10.5713/ab.24.0663
Lei Xue, Can Zhang, Bo Cheng, Qian Song, Lee J Johnston, Ling Liu, Fenglai Wang, Jianjun Zang
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引用次数: 0

摘要

目的:研究确定豆粕净能的适宜替代水平,并根据确定的净能值建立豆粕净能预测方程。方法:实验1,18头妊娠母猪(Landrace×Yorkshire;选取胎次为2 ~ 3胎、初始体重为221.2±2.6 kg的中期妊娠母猪,以体重为阻断指标,随机分为3组。3组分别饲喂玉米-豆粕基础饲粮和以豆粕替代15%和30%能量供应成分的试验饲粮。试验2配制了6种不同大豆来源和加工方式的饲粮,包括1种玉米-豆粕基础饲粮和5种豆粕饲粮(以试验1确定的替代水平为基础)。12头妊娠猪(体重= 209.0±3.0 kg;孕中期胎次、胎次3 ~胎次4次排列为6×3约登方阵设计。结果:随着替代水平的增加,SBM的NE含量呈线性增加(p结论:以15%的替代水平测定SBM的NE较为合适。此外,还可以根据其营养成分预测SBM的NE值。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Determination and prediction of net energy of soybean meal fed to pregnant sows by indirect calorimetry.

Objective: The study was conducted to investigate the appropriate substitution level of soybean meal (SBM) for determining its net energy (NE), and establish NE prediction equation of SBM based on the determined NE values for pregnant sows.

Methods: In Exp. 1, eighteen pregnant sows (Landrace×Yorkshire; parity, 2 to 3) with an initial body weight (BW) of 221.2±2.6 kg at mid-gestation were blocked by BW and randomly assigned into 3 groups. Three groups fed with a corn-SBM basal diet and two test diets with 15% and 30% energy-supplying components replaced by SBM, respectively. In Exp. 2, six diets were formulated including a corn-SBM basal diet and five SBM diets (based on the substitution level determined of Exp. 1) with different soybean sources and processing methods. Moreover, 12 pregnant pigs (BW = 209.0±3.0 kg; parity, 3 to 4) at mid-gestation were arranged in a 6×3 Youden square design.

Results: Increasing substitution levels of SBM linearly increased (p<0.05) fecal and urinary nitrogen excretion and the ratio of urinary energy to digestible energy (DE), while linearly decreased (p<0.05) the ratio of metabolizable energy (ME) to DE and tended to linearly decrease dietary ME (p = 0.066) and NE (p = 0.074). The coefficient of variation for the NE of SBM was lower at a 15% substitution level compared to a 30% substitution level. The nutritional compositions of SBM are influenced by the soybean sources and processing methods. As dry matter basis, NE values of SBM ranged from 11.1 to 12.7 MJ/kg and the best-fitted prediction equation for NE of SBM was: NE (MJ/kg) = -91.71+5.35×gross energy (%)-0.03×neutral detergent fiber (%; R2 = 0.96).

Conclusion: A substitution level of 15% was more appropriate to determine NE of SBM. Furthermore, NE values of SBM can be predicted based on their chemical compositions.

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来源期刊
Animal Bioscience
Animal Bioscience AGRICULTURE, DAIRY & ANIMAL SCIENCE-
CiteScore
5.00
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223
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3 months
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