Animal Science Department, College of Agriculture and Natural Resources, Razi University, Kermanshah, Iran.
Vet Med Sci. 2022 Jul;8(4):1603-1610. doi: 10.1002/vms3.827. Epub 2022 May 18.
Full fat soybean (FFSB) can be used in poultry diets as a source of fat and protein, without extra cost for oil extraction; however, raw FFSB contains several anti-nutritional factors.
Investigating the effects of replacing dietary soybean meal (SBM) with processed (roasted or autoclaved) FFSB on the performance of laying hens and egg quality traits.
A total of 324 Bovans White strain laying hens were randomly selected and distributed in 54 replicate cages. Based on a completely randomized design with a 2 × 4 factorial arrangement of treatments plus a control group, nine diets in which SBM were replaced with 25%, 50%, 75% and 100℅ roasted or autoclaved FFSB, with six replicates (with six hens each), were evaluated during an 8-week trial period (60-68 weeks).
Significantly increased feed intake (FI) was observed in hens fed diets including autoclaved FFSB (p < 0.05). The interactions between SBM replacement level and processing on feed conversion ratio (FCR), egg production (EP) and egg mass (EM) were significant (p < 0.01). Hens fed the diet with 100% roasted FFSB instead of SBM showed poor performance in terms of FCR, EP and EM during the experimental period. The main effect of SBM-replacing level on Haugh unit was significant (p < 0.05). The main effect of processing on shell thickness was significant (p < 0.05), so autoclaved FFSB caused higher eggshell thickness than control and roasted FFSB.
Replacement of dietary SBM with autoclaved FFSB can improve laying hens' performance in terms of FCR, EP, EM and eggshell quality and yolk colour.
The use of autoclaved FFSB to replace commercial SBM and its oil in the diet of laying hens is recommended. Feed factories can formulate the diets of laying hens with autoclaved FFSB without extra cost due to oil extraction soybeans.
全脂大豆（FFSB）可用作脂肪和蛋白质的来源，替代家禽饲料中的油，无需额外的油脂提取成本；然而，生的 FFSB 含有几种抗营养因子。
研究用加工（烤或高压灭菌）FFSB 替代日粮豆粕（SBM）对产蛋母鸡生产性能和蛋品质的影响。
选择 324 只 Bovans White 品系产蛋母鸡，随机分为 54 个重复笼。采用完全随机设计，2×4 因子处理设计，外加一个对照组，在 8 周试验期（60-68 周）内，用 25%、50%、75%和 100%的烤或高压灭菌 FFSB 替代 SBM 的 9 种日粮，每个处理设 6 个重复（每个重复 6 只鸡）。
饲喂高压灭菌 FFSB 日粮的母鸡的采食量（FI）显著增加（p<0.05）。SBM 替代水平与加工对饲料转化率（FCR）、产蛋率（EP）和蛋重（EM）的互作有显著影响（p<0.01）。在整个试验期，用 100%烤 FFSB 替代 SBM 的母鸡的 FCR、EP 和 EM 性能较差。SBM 替代水平对哈夫单位的主效应显著（p<0.05）。加工对蛋壳厚度的主效应显著（p<0.05），因此高压灭菌 FFSB 比对照和烤 FFSB 导致蛋壳厚度更高。
用高压灭菌 FFSB 替代日粮中的 SBM 可以改善产蛋母鸡的 FCR、EP、EM 和蛋壳质量及蛋黄颜色。
推荐在产蛋母鸡的日粮中使用高压灭菌 FFSB 替代商业 SBM 和其油脂。饲料厂可以用高压灭菌 FFSB 来配方产蛋母鸡的日粮，无需因油脂提取而额外使用大豆。
