The Effect of Quantitative Feed Restriction Duration on Growth Performance and Carcass Characteristics of Broiler Chickens

Ziphozihle Gobane, S. Goni, D. Chikwanda, Leocadia Zhou
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引用次数: 1

Abstract

The growth productivity of broilers is influenced by improving growth performance through improving body weight, average daily gain, and feed conversion rate. The objective of the study was to determine the effect of quantitative feed restriction duration on growth performance and carcass characteristics of broilers. A total of 144 day-old broiler chicks were reared in a deep litter system until slaughter at 42 days. Chicks were randomly allocated to three treatments which were replicated three times with 16 birds per replicate. The three treatments were the control (T1), one week of feed restriction (T2), and two weeks of feed restriction (T3). Birds were fed with starter, grower and finisher diets. The average daily gain (ADG), average daily feed intake (ADFI), and the feed conversion ratio (FCR) were computed for each week. Carcass weight and internal organs weights were measured. The body weight gained by the birds in T1 was similar to the birds that were restricted for a week. The treatments had a significant effect on the average daily gain in weeks 4, 5, and 6. The ADG for T2 was higher (P ad libitum at week 4 at the start of the treatment. There was no significant effect on the relative weights of heart weights, liver, gizzard, feet, and heads among the treatment groups except for intestine weight which was lower (P
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定量限饲期对肉仔鸡生长性能和胴体特性的影响
肉鸡的生长生产力受通过提高体重、平均日增重和饲料转化率来提高生长性能的影响。本研究的目的是确定定量限饲时间对肉鸡生长性能和胴体特性的影响。共有144天大的肉鸡在深窝系统中饲养,直到42天屠宰。鸡被随机分配到三个处理中,每个处理重复三次,每次重复16只。三个处理是对照(T1)、一周的饲料限制(T2)和两周的饲料控制(T3)。鸟类采用起始日粮、生长日粮和结束日粮喂养。每周计算平均日增重(ADG)、平均日采食量(ADFI)和饲料转化率(FCR)。测量胴体重量和内脏重量。T1期的鸟类体重增加与限制一周的鸟类相似。治疗对第4、5和6周的平均日增重有显著影响。T2的ADG在治疗开始的第4周时更高(P随意)。除了肠道重量较低外,治疗组的心重、肝重、胃重、脚重和头重的相对重量没有显著影响(P
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