限制性饲养对蛋鸡生产性能、蛋品质及器官特性的影响

IF 6.3
Doreen O. Anene , Yeasmin Akter , Peter C. Thomson , Peter Groves , Cormac J. O'Shea
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引用次数: 2

摘要

本研究旨在评估永久或临时限制饲养对蛋鸡生产性状、生理和蛋品质的影响。对240只单独饲养的ISA Brown母鸡进行了2个阶段的监测,分为3个处理:随意饲养(ALF)、临时限制饲养(TRF)和永久限制饲养(PRF),每个处理n=80只。在第1阶段(P1),22至40周,每天向TRF和PRF母鸡提供115克饲料。在第2阶段(P2),即41至46周,TRF母鸡转变为ALF状态,而ALF和PRF母鸡保持在P1状态。从35到40周,每处理15只母鸡,每周采集一次鸡蛋,并评估蛋白、蛋黄和蛋壳变量的差异。在45周时,分别对ALF和PRF组的10只母鸡实施安乐死,并评估器官特征的差异。在P1中,与分配ALF处理的母鸡相比,PRF和TRF处理的鸡的采食量、料蛋转化率和体重(BW)变化较低(P<;0.01),而蛋白高度和Haugh单位较高(P<:0.01)。在P2中,TRF和ALF母鸡比PRF具有更高的蛋产量和蛋质量(P<;0.01)。P2的体重变化在TRF中更高,在ALF和PRF中相似,而TRF中的采食量和饲料转化率更高,其次是ALF,在PRF治疗组中最低(P<;0.01)。在45周时,与PRF相比,ALF母鸡的腹部脂肪垫重量和脂肪肝出血综合征病变评分更高。从产蛋限制体重的角度来看,将母鸡限制在每天115克饲料,提高了饲料转化率和蛋白质量,减少了单独饲养的蛋鸡腹部脂肪垫沉积和脂肪肝出血综合征的临床症状。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Effect of restricted feeding on hen performance, egg quality and organ characteristics of individual laying hens

Effect of restricted feeding on hen performance, egg quality and organ characteristics of individual laying hens

Effect of restricted feeding on hen performance, egg quality and organ characteristics of individual laying hens

Effect of restricted feeding on hen performance, egg quality and organ characteristics of individual laying hens

This study was to assess the impact of permanent or temporary restricted feeding on laying hen production traits, physiology, and egg quality. Two hundred and forty individually housed ISA Brown hens were monitored across 2 phases, assigned to 3 treatments: ad libitum feeding (ALF), temporary restricted feeding (TRF) and permanent restricted feeding (PRF), n = 80 hens per treatment. In Phase 1 (P1), 22 to 40 weeks, the TRF and PRF hens were offered 115 g of feed daily. In Phase 2 (P2), 41 to 46 weeks, the TRF hens were transitioned to ALF status while the ALF and PRF hens remained as in P1. From 35 to 40 weeks, eggs were collected once weekly from 15 hens per treatment and assessed for differences in albumen, yolk, and shell variables. At 45 weeks, 10 hens each from the ALF and PRF groups were euthanized and differences in organ characteristics were assessed. In P1, feed intake, feed to egg conversion ratio and body weight (BW) change were lower (P < 0.01), while albumen height and Haugh unit were higher (P < 0.01) in both PRF and TRF hen treatments compared to hens allocated the ALF treatment. In P2, TRF and ALF hens had a higher egg production and egg mass than PRF (P < 0.01) than ALF. Body weight change in P2 was higher in TRF and similar in both ALF and PRF, while feed intake and feed conversion ratio were higher in TRF followed by ALF and least in the PRF treatment group (P < 0.01). At 45 weeks ALF hens had a greater abdominal fat pad weight and fatty liver haemorrhagic syndrome lesion score compared to PRF. Restricting hens to 115 g of feed per day from point of lay restrained BW, improved feed conversion ratio and albumen quality and reduced abdominal fat pad deposition and clinical signs of fatty liver haemorrhagic syndrome in individually housed laying hens.

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来源期刊
Animal Nutrition
Animal Nutrition Animal Science and Zoology
CiteScore
9.70
自引率
0.00%
发文量
542
审稿时长
65 days
期刊介绍: Animal Nutrition encompasses the full gamut of animal nutritional sciences and reviews including, but not limited to, fundamental aspects of animal nutrition such as nutritional requirements, metabolic studies, body composition, energetics, immunology, neuroscience, microbiology, genetics and molecular and cell biology related to primarily to the nutrition of farm animals and aquatic species. More applied aspects of animal nutrition, such as the evaluation of novel ingredients, feed additives and feed safety will also be considered but it is expected that such studies will have a strong nutritional focus. Animal Nutrition is indexed in SCIE, PubMed Central, Scopus, DOAJ, etc.
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