Use of statistical models to determine the optimal concentration of metabolizable energy for growth performance of broiler chickens

肉鸡 饲料转化率 动物科学 数学 餐食 完全随机设计 豆粕 能量密度 生物技术 食品科学 体重 生物 内分泌学 物理 原材料 理论物理学 生态学
作者
Francielle O. Marx,Marcus Vinícius Niz Alvarez,Lucas Schmidt Bassi,Ananda Portella Félix,Everton Luís Krabbe,Simone Gisele de Oliveira,Alex Maiorka
出处
期刊:Livestock Science [Elsevier BV]
卷期号:274: 105268-105268
标识
DOI:10.1016/j.livsci.2023.105268
摘要

The formulation of diets that adequately meet energy requirements in the different phases of broiler chicken production is of the utmost importance. The objective of this study was to determine the optimal content of metabolizable energy (ME) for broiler chickens in various production phases using different statistical models. A total of 900 broiler chickens were assigned to 5 treatments with 9 replicates of 20 broiler chickens each from 21 to 42 d of age in a completely randomized design. Experimental diets were based on corn and soybean meal and formulated to meet the nutritional requirements of broiler chickens, except for ME requirements. Dietary treatments consisted of 5 pelleted/crushed diets with increasing levels of ME: T1 to T5 (2,850 to 3,250 kcal/kg), divided into grower (21 to 35 d) and finisher (35 to 42 d) phases. Feed intake (FI), body weight gain (BWG), feed conversion ratio (FCR), total energy intake, efficiency of energy use for BWG, and carcass and cuts yields were determined. The ideal ME content for best FCR was determined with the use of quadratic polynomial (QP), segmented, and linear response plateau models (LRP). In all evaluated periods, BWG was not influenced by ME, whereas FI and FCR decreased linearly with increasing ME. Total energy intake increased and the energy use efficiency for BWG decreased with greater ME (P < 0.05). Neither carcass nor cuts yields were influenced by dietary ME. The ideal dietary ME content differed between statistical models. In conclusion, based on FCR results, the QP regression model presented the best fit of the data in the grower phase, indicating an optimal content of metabolizable energy for feed conversion of 3,264 kcal/kg, whereas LRP presented the best data adjustment in the finisher phase, indicating 3,224 kcal/kg of ME as optimal.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
刚刚
刚刚
刚刚
mzh完成签到 ,获得积分10
刚刚
莫离完成签到,获得积分10
1秒前
1秒前
3秒前
4秒前
随机游动完成签到,获得积分10
4秒前
sci_porn发布了新的文献求助10
4秒前
勤劳的鸡发布了新的文献求助10
4秒前
完美世界应助GOW采纳,获得10
4秒前
马力完成签到,获得积分10
5秒前
高挑的一手完成签到,获得积分10
5秒前
5秒前
灌灌灌灌发布了新的文献求助10
5秒前
6秒前
布鲁爱思发布了新的文献求助10
6秒前
wangshibing发布了新的文献求助10
6秒前
上官若男应助李大了采纳,获得10
6秒前
科研通AI2S应助xuan采纳,获得10
7秒前
无奈行恶应助tigger采纳,获得30
7秒前
衬衣范发布了新的文献求助10
8秒前
乐观的幼珊完成签到,获得积分10
9秒前
byron关注了科研通微信公众号
9秒前
10秒前
无花果应助王玄琳采纳,获得10
10秒前
SYLH应助科研通管家采纳,获得10
13秒前
13秒前
田様应助科研通管家采纳,获得10
13秒前
13秒前
桐桐应助科研通管家采纳,获得10
13秒前
13秒前
SYLH应助科研通管家采纳,获得10
13秒前
SYLH应助科研通管家采纳,获得10
13秒前
SciGPT应助欣欣子采纳,获得10
13秒前
所所应助科研通管家采纳,获得10
13秒前
传奇3应助科研通管家采纳,获得10
14秒前
所所应助科研通管家采纳,获得10
14秒前
didi发布了新的文献求助10
14秒前
高分求助中
Picture Books with Same-sex Parented Families: Unintentional Censorship 700
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
Effective Learning and Mental Wellbeing 300
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3974779
求助须知:如何正确求助?哪些是违规求助? 3519193
关于积分的说明 11197417
捐赠科研通 3255311
什么是DOI,文献DOI怎么找? 1797760
邀请新用户注册赠送积分活动 877150
科研通“疑难数据库(出版商)”最低求助积分说明 806187