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首页> 外文期刊>Philippines Journal of Veterinary and Animal Sciences >Performance of broilers from parent stocks of different age groups
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Performance of broilers from parent stocks of different age groups

机译：不同年龄组母鸡的肉鸡表现

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摘要

The influence of age of parent stocks on the productive performance and carcass characteristics of broilers were studied in two separate experiments. In Experiment 1, 63 head of day-old chicks produced from each of the 29- and 58-week old broiler parent stocks were allocated into 3 treatment groups following a completely randomised design. The different treatments used are as follows: I-broilers produced from 29-week old parent stock; H-broilers produced from 58-week old parent stock; and, III-combination of broilers produced from parent stocks in treatments I and II. Each treatment was replicated 3 times with 14 broilers per replication. In Experiment II, 210 head of day-old broiler chicks produced from each of the 65- and 70-week old broiler parent stocks were used. Each treatment was replicated 14 times with 15 broilers per replication. The difference between the 2 treatments in 6-week body weight, feed conversion ratio, mortality rate, dressing percentage and cut-up parts was analyzed using T-test. Results in Experiment 1 showed significantly higher 6-week body weight and lower mortality rate of broilers produced by 58-week old parent stock than those produced by 28-week old parent stock. The difference in feed conversion ratio and in carcass characteristics between treatments was found to be insignificant. Results in Experiment II showed significantly higher body weight, better feed efficiency and lower mortality for broilers produced by 65-week old parent stock as compared to those produced by 70-week old parent stock. The difference between the two treatments in dressing percentage and in percent cut-up parts was found to be insignificant.
机译：在两个单独的实验中研究了母鸡年龄对肉鸡生产性能和car体特性的影响。在实验1中，按照完全随机的设计，将由29周龄和58周龄的肉鸡亲本中的每只生产的63头日龄雏鸡分为3个处理组。所使用的不同处理方法如下：由29周龄的母鸡生产的I型烤炉;用58周龄的母鸡生产的H型锅炉;在处理I和处理II中，将母鸡生产的肉鸡与III结合。每个处理重复3次，每次重复14只肉鸡。在实验II中，使用了由65周龄和70周龄的肉鸡亲本中的每一种生产的210头日龄肉鸡。每个处理重复14次，每次重复15只肉鸡。使用T检验分析了这两种处理方法在6周体重，饲料转化率，死亡率，换料率和切碎率之间的差异。实验1的结果表明，与28周龄母鸡相比，58周龄母鸡生产的肉鸡6周体重明显更高，死亡率更低。发现处理之间的饲料转化率和car体特性差异不明显。实验二的结果表明，与70周龄母鸡相比，由65周龄母鸡生产的肉鸡具有更高的体重，更好的饲料效率和更低的死亡率。发现两种处理之间的敷料百分比和切碎百分比的差异不明显。

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