两种不同来源的植酸酶对蛋鸡产蛋性能参数及养分消化率的影响。

Effect of supplementation of two different sources of phytase on egg production parameters in laying hens and nutrient digestiblity.

作者信息

Jalal M A, Scheideler S E

机构信息

Department of Animal Science, University of Nebraska, Lincoln 68583-0908, USA.

出版信息

Poult Sci. 2001 Oct;80(10):1463-71. doi: 10.1093/ps/80.10.1463.

DOI:10.1093/ps/80.10.1463

PMID:11599706

Abstract

Hens were fed corn-soybean meal diets containing 0.35, 0.25, 0.15, or 0.10% nonphytate phosphorus (NPP) (40 to 60 wk). Phytases A and B were added at 0.25, 0.15, and 0.10% at 250 to 300 units of phytase (FTU)/kg feed in a 3 x 3 factorial; 0.35% was a control diet. Treatments were replicated with eight cages per treatment (five hens per cage) in a randomized complete block design. Phytase supplementation had a significant effect on several production parameters: feed intake, feed conversion, and egg mass. Results showed nonsignificant effects (P < 0.06) on feed intake when hens were supplemented with phytase A or B and consumed more feed compared to the basal diet at 0.10% NPP. The feed conversion of birds fed 0.10% NPP without phytase was the least efficient compared to the other nine treatments (P < 0.05). Egg mass was significantly greater for hens supplemented with phytases A and B than for hens fed the basal diet at low (0.10%) NPP (P < 0.05). There were no significant differences in egg production, egg weight, specific gravity, Haugh units, wet shell, or dry yolk percentages. Dry shell percentage was higher among basal diets at 0.15 and 0.25% NPP in contrast to phytase, whereas albumen and dry yolk percentages were significantly higher for diets with phytase than for the basal diet at 0.10% NPP. Bone ash percentage was uncharacteristically high in hens fed 0.10% NPP without phytase; however, mortality was 22% in this group. Phytase supplementation improved Ca and P digestibilities to varying degrees. Supplementation of phytase in normal, corn-soybean meal diets improved feed intake, feed conversion, and egg mass and elicited a response in shell quality and egg components at the low (0.10%) NPP.

摘要

在40至60周龄时，给母鸡饲喂含0.35%、0.25%、0.15%或0.10%非植酸磷（NPP）的玉米 - 豆粕日粮。按照3×3析因设计，以每千克饲料250至300单位植酸酶（FTU）的添加量，分别添加0.25%、0.15%和0.10%的植酸酶A和植酸酶B；0.35%为对照日粮。采用随机完全区组设计，每个处理重复8个笼子（每个笼子5只母鸡）。添加植酸酶对几个生产参数有显著影响：采食量、饲料转化率和蛋重。结果表明，当给母鸡补充植酸酶A或B时，采食量无显著影响（P < 0.06），且与0.10% NPP的基础日粮相比，采食量更多。与其他九个处理相比，不添加植酸酶的0.10% NPP日粮组的饲料转化率最低（P < 0.05）。补充植酸酶A和B的母鸡的蛋重显著高于低（0.10%）NPP基础日粮组的母鸡（P < 0.05）。产蛋量、蛋重、比重、哈氏单位、湿蛋壳或干蛋黄百分比无显著差异。与植酸酶日粮相比，0.15%和0.25% NPP基础日粮的干蛋壳百分比更高，而添加植酸酶日粮的蛋白和干蛋黄百分比显著高于0.10% NPP基础日粮。在不添加植酸酶的0.10% NPP日粮组中，母鸡的骨灰百分比异常高；然而，该组的死亡率为22%。添加植酸酶不同程度地提高了钙和磷的消化率。在正常玉米 - 豆粕日粮中添加植酸酶可提高采食量、饲料转化率和蛋重，并在低（0.10%）NPP时对蛋壳质量和蛋成分产生影响。