摘要
For Exp. 1, 120 ((YorkshireLandrace)Duroc) weaned pigs (7.960.01 kg average initial BW, 21 days weaning) were used in a 28 d-growth assay to determine the effects of replacing soy protein concentrate (SPC) with fermented soy protein (FSP) in a starter diet (d 0 to 7) on the growth performance, apparent fecal amino acid digestibility and subsequent performance in weaned pigs. Dietary treatments included: i) FSP0 (basal diet; whey-skim milk powder-SPC based diet); ii) FSP5 (replacing SPC with 5% FSP); iii) FSP10 (replacing SPC with 10% FSP). Pigs were fed the phase I diet for 7 days, and then each group was fed a common commercial diet for 21 days to determine the effect of previous diet on subsequent performance. Average daily gain (ADG) from d 5 to 7 (linear effect, p = 0.01) and d 7 to 14 (linear effect, p<0.001) were increased as FSP level increased. The pigs fed with FSP was heavier than the pigs fed with SPC at d 5 to 7 and d 7 to 14 after weaning (p<0.05). In the entire period (d 0 to 28), there were no significant differences in weight gain and final weight between SPC and FSP diets (p>0.05). Average daily feed intake (ADFI) was higher in pigs fed with the 5% FSP diet than those fed with the other diets at d 0 to 2 post-weaning (quadratic effect, p = 0.05). Also, for the entire period of phase I (d 0 to 7), pigs consumed more 5% FSP diet compared to other treatments (quadratic effect, p = 0.03). Gain/feed (G/F) was not affected by dietary SPC or FSP in phase I and subsequent periods, but G/F from d 5 to 7 after weaning was improved linearly (p = 0.04) as dietary FSP level increased. Pigs fed with 10% FSP also improved G/F compared with those fed only SPC (p<0.05). At d 7, there were linear increments in fecal dry matter (DM) (p<0.1) and nitrogen (N) (p<0.01) digestibilities as the dietary FSP level increased. The digestibilities of fecal essential and total amino acids were increased as the FSP level increased (linear effect, p<0.1). For Exp. 2, three ((YorkshireLandrace)Duroc) weaned barrows (average initial BW of 7.32 kg) were surgically fitted with a simple T-cannula approximately 15 cm prior to the ileo-cecal junction. The experimental designs were 33 latin squares with pigs and periods as blocking criteria. Dietary treatments and composition were the same as in Exp. 1. Apparent ileal N digestibility was increased as FSP level was increased (linear effect, p<0.05). The dietary treatments (SPC and FSP) did not affect apparent ileal DM digestibility (p>0.05). Among essential amino acids, apparent digestibility of ileal arginine (Arg), lysine (Lys), methionine (Met) and phenylalanine (Phe) were improved as the FSP level increased (linear effect, p<0.1). Also, apparent ileal total essential, non-essential and total amino acid digestibilities were increased linearly (p<0.1). In conclusion, replacing SPC with fermented soy protein appeared beneficial in growth performance, N and amino acid digestibility during the early 7 days after weaning, and an equivalent effect showed on growth performance in subsequent period of 7 to 28 days after weaning.
摘要译文
对于Exp。 1,120（（YorkshireLandrace）Duroc）断奶仔猪（平均初始体重7.960.01千克，断奶）用于28天生长试验，以确定在发酵饮食（d 0至7）中用发酵大豆蛋白（FSP）替代大豆浓缩蛋白（SPC）对生长性能的影响，在断奶仔猪中明显的粪便氨基酸消化率和随后的表现。膳食治疗包括：i）FSP0（基础饮食;乳清脱脂奶粉-SPC基饮食）;ii）FSP5（用5％FSP代替SPC）; iii）FSP10（用10％FSP代替SPC）。猪喂养I期饮食7天，然后每组喂食一种常见的商业饮食21天，以确定先前饮食对随后表现的影响。平均日增重（ADG）从d 5到7（线性效应，p \x3d 0。随着FSP水平的增加，01）和d 7至14（线性效应，p 0.001）增加。饲喂FSP的猪比断奶后第5天至第7天和第7天至第14天饲喂SPC的猪重（p 0.05）。在整个期间（d 0至28），SPC和FSP饮食之间的体重增加和最终体重没有显着差异（p 0.05）。饲喂5％FSP饲料的猪的平均日采食量（ADFI）高于断奶后第0天至第2天饲喂其他日粮的猪（二次效应，p \x3d 0.05）。也，在整个I期（d 0到7）期间，与其他处理相比，猪消耗了5％的FSP饮食（二次效应，p \x3d 0.03）。在阶段I和随后的时期，增重/饲料（G / F）不受膳食SPC或FSP的影响，但断奶后从第5天到第7天的G / F随着膳食FSP水平的增加而线性增加（p \x3d 0.04）。与仅喂食SPC的猪相比，用10％FSP喂养的猪也改善了G / F（p 0.05）。在第7天，粪便干物质（DM）（p 0.1）和氮（N）（p 0）存在线性增量。01）消化率随着膳食FSP水平的增加而增加。随着FSP水平的增加，粪便必需氨基酸和总氨基酸的消化率增加（线性效应，p 0.1）。对于Exp。 2，三（（YorkshireLandrace）Duroc）断奶的阉猪（平均初始体重为7.32千克）在回肠 - 盲肠连接处之前约15厘米通过外科手术装配一个简单的T型套管。实验设计是33个拉丁方与猪和时期作为阻止标准。膳食治疗和组成与Exp相同。 1。随着FSP水平的增加，表观回肠N消化率增加（线性效应，p 0.05）。膳食处理（SPC和FSP）不影响表观回肠DM消化率（p 0.05）。在必需氨基酸中，随着FSP水平的增加，回肠精氨酸（Arg），赖氨酸（Lys），蛋氨酸（Met）和苯丙氨酸（Phe）的表观消化率得到改善（线性效应，p 0.1）。此外，表观回肠总必需，非必需和总氨基酸消化率线性增加（p 0.1）。结论，用发酵的大豆蛋白代替SPC似乎有利于断奶后7天的生长性能，N和氨基酸消化率，并且在断奶后7至28天的后续期间显示出相同的效果。
Min, B.J.; Cho, J.H.; Chen, Y.J.; Kim, H.J.; Yoo, J.S.; Wang, Q.; Kim, I.H.; Cho, W.T.; Lee, S.S.;. Effects of Replacing Soy Protein Concentrate with Fermented Soy Protein in Starter Diet on Growth Performance and Ileal Amino Acid Digestibility in Weaned Pigs[J]. Asian-Australasian Journal of Animal Sciences, 2009,22(1): 99-106