用酶解发酵复合蛋白饲料替代豆粕对生长育肥猪生长性能、表观营养消化率、胴体特征和肉质的影响

IF 7 1区 农林科学 Q1 Agricultural and Biological Sciences
Yu Cheng, Jun He, Ping Zheng, Jie Yu, Junning Pu, Zhiqing Huang, Xiangbing Mao, Yuheng Luo, Junqiu Luo, Hui Yan, Aimin Wu, Bing Yu, Daiwen Chen
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引用次数: 0

摘要

为了解决优质蛋白质资源短缺的问题,本研究以生长性能、营养物质消化率、胴体性状和肉质为重点,探讨了在生长育成猪日粮中用不同水平的酶解发酵复合蛋白饲料(EFCP)替代豆粕(SBM)的效果。在 2 × 2 + 1 的因子设计中,60 头初始体重为 42.76 ± 2.05 千克的 DLY(杜洛克×陆地赛×约克夏)猪被分配到 5 种日粮处理中。这些日粮处理包括玉米-豆粕日粮(CON)、未经处理的复合蛋白饲料(UCP)替代 50%(U50)和 100%SBM(U100)日粮,以及 EFCP 替代 50%(EF50)和 100%SBM(EF100)日粮。每个处理有 6 个栏(重复),每栏 2 头猪,实验持续 58 天,分为第一阶段(1-28 天)和第二阶段(29-58 天)。第一阶段结束后,只有 CON 组、U50 组和 EF50 组继续进行第二阶段,每个组有 5 个重复栏。第 59 天,共有 15 头猪(1 头/栏,5 栏/处理)被安乐死。在第一阶段,EF50 组与 CON 组相比,猪的平均日增重(ADG)更高(P < 0.05),而 U50 组没有显著差异。在第一阶段,随着 UCP 和 EFCP 替代率的增加,最终体重和 ADG 明显降低(P < 0.05),同时料增比(F/G)增加(P < 0.05)。在第二阶段,各处理组的生长性能无显著差异,但与 U50 相比,EF50 提高了几种营养物质(包括干物质、粗蛋白、粗纤维、酸性洗涤纤维、灰分、总能)的表观消化率。与 CON 组和 U50 组相比,EF50 组的血清神经肽 Y 和胃泌素水平也明显更高(P < 0.05)。此外,EF50 组的胴体重量和胴体长度均高于 CON 组和 U50 组(P < 0.05),但肉质无显著差异。研究结果表明,在生长-育成期用 EFCP 代替 50%的 SBM 可以提高猪的生长性能、营养消化率和胴体性状,而不会影响肉质。这项研究为改良非常规植物蛋白粉和开发 SBM 的替代品提供了宝贵的见解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effects of replacing soybean meal with enzymolysis-fermentation compound protein feed on growth performance, apparent digestibility of nutrients, carcass traits, and meat quality in growing-finishing pigs
Addressing the shortage of high-quality protein resources, this study was conducted to investigate the effects of replacing soybean meal (SBM) with different levels of enzymolysis-fermentation compound protein feed (EFCP) in the diets of growing-finishing pigs, focusing on growth performance, nutrients digestibility, carcass traits, and meat quality. Sixty DLY (Duroc × Landrace × Yorkshire) pigs with an initial body weight of 42.76 ± 2.05 kg were assigned to 5 dietary treatments in a 2 × 2 + 1 factorial design. These dietary treatments included a corn-soybean meal diet (CON), untreated compound protein feed (UCP) substitution 50% (U50) and 100% SBM (U100) diets, and EFCP substitution 50% (EF50) and 100% SBM (EF100) diets. Each treatment had 6 pens (replicates) with 2 pigs per pen, and the experiment lasted 58 d, divided into phase I (1–28 d) and phase II (29–58 d). Following phase I, only the CON, U50, and EF50 groups were continued for phase II, each with 5 replicate pens. On d 59, a total of 15 pigs (1 pig/pen, 5 pens/treatment) were euthanized. During phase I, the EF50 group had a higher average daily gain (ADG) in pigs (P < 0.05) compared to the CON group, whereas the U50 group did not have a significant difference. As the substitution ratio of UCP and EFCP increased in phase I, there was a noticeable reduction in the final body weight and ADG (P < 0.05), along with an increase in the feed-to-gain ratio (F/G) (P < 0.05). In phase II, there were no significant differences in growth performance among the treatment groups, but EF50 increased the apparent digestibility of several nutrients (including dry matter, crude protein, crude fiber, acid detergent fiber, ash, gross energy) compared to U50. The EF50 group also exhibited significantly higher serum levels of neuropeptide Y and ghrelin compared to the CON and U50 groups (P < 0.05). Moreover, the EF50 group had higher carcass weight and carcass length than those in the CON and U50 groups (P < 0.05), with no significant difference in meat quality. The study findings suggest that replacing 50% SBM with EFCP during the growing-finishing period can improve the growth performance, nutrient digestibility, and carcass traits of pigs without compromising meat quality. This research offers valuable insights into the modification of unconventional plant protein meals and developing alternatives to SBM.
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来源期刊
Journal of Animal Science and Biotechnology
Journal of Animal Science and Biotechnology AGRICULTURE, DAIRY & ANIMAL SCIENCE-
CiteScore
9.90
自引率
2.90%
发文量
822
审稿时长
17 weeks
期刊介绍: Journal of Animal Science and Biotechnology is an open access, peer-reviewed journal that encompasses all aspects of animal science and biotechnology. That includes domestic animal production, animal genetics and breeding, animal reproduction and physiology, animal nutrition and biochemistry, feed processing technology and bioevaluation, animal biotechnology, and meat science.
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