Improving the efficiency of feed utilization in poultry by selection. 2. Genetic parameters of excretion traits and correlations with anatomy of the gastro-intestinal tract and digestive efficiency.
Improving the efficiency of feed utilization in poultry by selection. 2. Genetic parameters of excretion traits and correlations with anatomy of the gastro-intestinal tract and digestive efficiency.
复制标题
DOI：
10.1186/1471-2156-12-71
复制
发表时间：
2011-08-17
期刊：
影响因子：
2.9
通讯作者：
Mignon-Grasteau S
中科院分区：
文献类型：
--
作者：
de Verdal H;Narcy A;Bastianelli D;Chapuis H;Même N;Urvoix S;Le Bihan-Duval E;Mignon-Grasteau S
家禽生产因其产生的粪便数量及其氮和磷含量对环境造成的负面影响而受到广泛批评。本研究旨在探讨哪些与排泄相关的性状可用于选择环境污染较低的鸡。对来自2个不同选择系的630只鸡的几个排泄性状的遗传参数进行了估计。测定了相对于饲料消耗量的排泄物量（CDUDM）、排泄的氮和磷、排泄物的氮磷比和含水量，并估计了这种选择对生产性能和胃肠道（GIT）特征的影响。建立了排泄量、GIT与生产性能的遗传相关。CDUDM和氮排泄率的遗传力估计值较高（分别为0.30和0.29）。其他排泄测量结果显示低至中度的遗传力估计，范围从0.10排泄物含水量的磷排泄率为0.22。除排泄物含水量外，CDUDM与排泄性状的相关系数在-0.64 ~-1.00之间。AMEn或CDUDM与GIT特征之间的遗传相关性非常相似，表明鸡排泄物的减少涉及GIT上部重量的增加和小肠重量的减少。为了限制鸡生产对环境的影响，AMEn和CDUDM似乎是比饲料效率性状更合适的选择标准。
Poultry production has been widely criticized for its negative environmental impact related to the quantity of manure produced and to its nitrogen and phosphorus content. In this study, we investigated which traits related to excretion could be used to select chickens for lower environmental pollution. The genetic parameters of several excretion traits were estimated on 630 chickens originating from 2 chicken lines divergently selected on apparent metabolisable energy corrected for zero nitrogen (AMEn) at constant body weight. The quantity of excreta relative to feed consumption (CDUDM), the nitrogen and phosphorus excreted, the nitrogen to phosphorus ratio and the water content of excreta were measured, and the consequences of such selection on performance and gastro-intestinal tract (GIT) characteristics estimated. The genetic correlations between excretion, GIT and performance traits were established. Heritability estimates were high for CDUDM and the nitrogen excretion rate (0.30 and 0.29, respectively). The other excretion measurements showed low to moderate heritability estimates, ranging from 0.10 for excreta water content to 0.22 for the phosphorus excretion rate. Except for the excreta water content, the CDUDM was highly correlated with the excretion traits, ranging from -0.64 to -1.00. The genetic correlations between AMEn or CDUDM and the GIT characteristics were very similar and showed that a decrease in chicken excretion involves an increase in weight of the upper part of the GIT, and a decrease in the weight of the small intestine. In order to limit the environmental impact of chicken production, AMEn and CDUDM seem to be more suitable criteria to include in selection schemes than feed efficiency traits.
登录
查看更多内容
影响因子：
4.4
作者：
Rougiere, N.;Gomez, J.;Carre, B.
通讯作者：
Carre, B.
影响因子：
2
作者：
Ni, J. -Q.;Heber, A. J.;Diehl, C. A.
通讯作者：
Diehl, C. A.
影响因子：
1.5
作者：
Kamisoyama, Hiroshi;Honda, Kazuhisa;Hasegawa, Shin
通讯作者：
Hasegawa, Shin
DOI：
10.1046/j.1439-0396.2001.00337.x
发表时间：
2001-12-01
影响因子：
2.7
作者：
Rapp, C;Lantzsch, HJ;Drochner, W
通讯作者：
Drochner, W
影响因子：
4.4
作者：
Dilger, RN;Adeola, O
通讯作者：
Adeola, O