Effects of adding dietary bakery waste to corn on broiler growth performance, carcass traits, and feed costs.

IF 1.7 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE
Veterinary World Pub Date : 2025-02-01 Epub Date: 2025-02-19 DOI:10.14202/vetworld.2025.440-445
Wilaiwan Sirirotjanaput, Jeerasak Chobtang, Auraiwan Isuwan, Supawadee Chimtomg, Janjira Sittiya
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引用次数: 0

Abstract

Background and aim: The rising cost of corn in livestock feed has driven interest in alternative feed ingredients. Bakery waste, a byproduct of bakery production, presents a viable substitute for corn in broiler diets. This study evaluated the effects of replacing 40% of dietary corn with bakery waste on broiler growth performance, carcass traits, and feed costs. We hypothesized that this substitution would maintain performance while reducing feed costs.

Materials and methods: A total of 240 1-day-old Ross 308 broiler chicks were randomly assigned to two dietary treatments: (T1) A control diet with 100% corn and (T2) a diet replacing 40% of corn with bakery waste. Each group had six replicates of 20 birds, housed under identical conditions with ad libitum access to feed and water for 35 days. Growth performance (feed intake [FI], body weight gain [BWG], and feed conversion ratio [FCR]) was assessed at different growth stages. Carcass traits were evaluated in selected birds, and feed cost per kilogram gain (FCG) was calculated. Statistical analysis was performed using a paired Student's t-test, with significance set at p < 0.05.

Results: No significant differences were observed in FI, BWG, or FCR between groups across all growth phases (p > 0.05). However, FCG was significantly lower in the T2 group compared to T1 (p < 0.05), indicating reduced feed costs. Carcass traits showed no major differences except for significantly lower eviscerated carcass yield and breast yield in the T2 group (p < 0.05).

Conclusion: Replacing 40% of corn with bakery waste in broiler diets is a cost-effective strategy without adverse effects on growth performance. However, the reduction in breast yield suggests potential amino acid imbalances, warranting further investigation into nutrient digestibility and fat deposition. Future research should optimize bakery waste inclusion levels to ensure economic feasibility while maintaining meat quality.

玉米饲粮中添加烘焙废弃物对肉鸡生长性能、胴体性状和饲料成本的影响。
背景与目的:牲畜饲料中玉米成本的上升已经引起了人们对替代饲料成分的兴趣。烘焙废物是烘焙生产的副产品,是肉鸡饲粮中玉米的可行替代品。本研究评价了饲粮中烘焙废弃物替代40%玉米对肉鸡生长性能、胴体性状和饲料成本的影响。我们假设这种替代将保持性能,同时降低饲料成本。材料与方法:选取240只1日龄罗斯308肉鸡,随机分为2个饲粮处理:(T1)对照饲粮中添加100%玉米,(T2)饲粮中添加烘培废弃物替代40%玉米。每组有6个重复,每组20只鸟,在相同的条件下饲养,自由地获得饲料和水,为期35天。评估不同生长阶段的生长性能(采食量[FI]、增重[BWG]和饲料系数[FCR])。评价所选禽鸟的胴体性状,计算每公斤增重饲料成本(FCG)。统计学分析采用配对学生t检验,显著性p < 0.05。结果:各生长期各组间FI、BWG、FCR均无显著差异(p < 0.05)。但T2组的FCG显著低于T1组(p < 0.05),表明饲料成本降低。除T2组净膛胴体产量和胸肉产量显著降低外,其余各胴体性状无显著差异(p < 0.05)。结论:在肉鸡日粮中,烘培废物替代40%的玉米是一种经济有效的策略,且不会对生长性能产生不利影响。然而,乳房产量的减少表明潜在的氨基酸失衡,需要进一步研究营养消化率和脂肪沉积。未来的研究应优化烘焙废弃物的添加水平,以确保经济可行性,同时保持肉类品质。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Veterinary World
Veterinary World Multiple-
CiteScore
3.60
自引率
12.50%
发文量
317
审稿时长
16 weeks
期刊介绍: Veterinary World publishes high quality papers focusing on Veterinary and Animal Science. The fields of study are bacteriology, parasitology, pathology, virology, immunology, mycology, public health, biotechnology, meat science, fish diseases, nutrition, gynecology, genetics, wildlife, laboratory animals, animal models of human infections, prion diseases and epidemiology. Studies on zoonotic and emerging infections are highly appreciated. Review articles are highly appreciated. All articles published by Veterinary World are made freely and permanently accessible online. All articles to Veterinary World are posted online immediately as they are ready for publication.
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