• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Poultry Science >A description of the growth of the major body components of 2 broiler chicken strains.
【24h】

A description of the growth of the major body components of 2 broiler chicken strains.

机译：描述了两种肉鸡鸡的主要身体成分的生长。

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The objective of this work was to compare the growth and chemical composition of the main body parts of males and females of the Ross and Cobb broiler strains available in Brazil. In total, 1,920 chicks were raised in 16 floor pens, from which 4 birds of each strain and sex were sampled weekly for the required measurements. The strains and sexes were reared in separate pens, using 4 replications of 120 birds each. Four feeds, based on corn and soybeans, were used during the trial: feed 1 from 1 to 7 d, feed 2 from 8 to 28 d, feed 3 from 29 to 49 d, and feed 4 from 50 to 56 d of age (all of the birds were given the same feed for each time interval). All of the birds were weighed weekly and the 4 birds sampled from each strain and sex were weighed, fasted for 24 h, reweighed, killed, eviscerated, and dissected. The breast, drums, thighs, and wings were weighed, packed into identified plastic bags, and stored in a freezer to later be thawed and minced. They were then freeze-dried to obtain the water content, after which they were again milled before analyzing for protein, lipid, and ash using AOAC procedures. The Gompertz equation was fitted to the weights of the body parts as well as to the protein weights of the components. Using data from each individual chicken that was sampled, allometric regressions were fitted to the weights of the physical and chemical components, with ln body protein weight being the independent variable and ln component weight being the dependent variable. Although some of the allometric relationships between the various body parts and body protein weight differed statistically between strains and sexes, these differences were of little commercial significance, suggesting that the relative growth rates of the different body components of the genotypes tested in this trial have not been changed substantially by genetic selection.Digital Object Identifier http://dx.doi.org/10.3382/ps.2011-01602
机译：这项工作的目的是比较巴西可买到的罗斯和科布肉鸡菌株的雄性和雌性主体部分的生长和化学组成。总共在16层围栏中饲养了1,920头小鸡，每周从其中抽取4种不同品系和性别的鸟以进行所需的测量。将品系和性别在单独的圈舍中饲养，每组120只鸡进行4次重复。试验期间使用了四种基于玉米和大豆的饲料：饲料1从1到7 d，饲料2从8到28 d，饲料3从29到49 d，以及饲料4从50到56 d的年龄（在每个时间间隔内为所有鸡只提供相同的饲料）。每周对所有鸡只称重，对每种品系和性别取样的4只鸡称重，禁食24小时，重新称重，杀死，剔除内脏和解剖。称量胸部，鼓，大腿和翅膀的重量，装入确定的塑料袋中，然后存放在冰箱中，然后解冻并切碎。然后将它们冷冻干燥以获得水分，然后再次研磨，然后使用AOAC方法分析蛋白质，脂质和灰分。将Gompertz方程拟合到身体部位的重量以及组件的蛋白质重量。使用每个样本鸡的数据，将异体回归拟合为物理和化学成分的权重，其中 ln 体重是自变量，而 ln 成分权重是因变量。尽管各个性别和身体蛋白质重量之间的某些异速关系在品系和性别之间存在统计学差异，但这些差异在商业上意义不大，这表明该试验中检测到的基因型的不同身体成分的相对生长速率并未通过遗传选择进行了实质性更改。数字对象标识符http://dx.doi.org/10.3382/ps.2011-01602

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号