苜蓿草粉饲粮添加纤维素酶对蛋鸡生产性能、蛋品质及养分利用率的影响

草业学报 ›› 2011, Vol. 20 ›› Issue (5): 183-191.

苜蓿草粉饲粮添加纤维素酶对蛋鸡生产性能、蛋品质及养分利用率的影响

夏素银¹,王成章^1*,詹发柏²,严学兵¹,刘起栓¹,陈艳荣¹,李海艳¹

1.河南农业大学牧医工程学院,河南郑州 450002;
2.河南省光山县罗陈乡农村经济发展中心,河南光山 465436

出版日期:2011-10-20 发布日期:2011-10-20
通讯作者: E-mail:wangchengzhang@263.net
作者简介:夏素银(1978-),女,河南濮阳人,在读硕士。
基金资助:
国家牧草产业技术体系建设项目(CARS-35)和国家十二五科技支撑计划(2011BAD17B04)资助。

Effect of adding cellulase to alfalfa meal ration on production performance, egg quality and nutrient digestibility on layers

XIA Su-yin¹, WANG Cheng-zhang^1*, ZHAN Fa-bai¹, YAN Xue-bing¹, LIU Qi-shuan¹, CHEN Yan-rong¹, LI Hai-yan¹,

1.College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, China;
2.Rural Economic Development Center, Luo Chen Village, Guang Hill County 465436, China

Online:2011-10-20 Published:2011-10-20

摘要/Abstract

摘要：

本研究的目的是探讨在蛋鸡饲粮中添加不同比例的苜蓿草粉和在高水平苜蓿草粉饲粮中添加纤维素酶对其生产性能、蛋品质及养分利用率的影响。试验选用40周龄健康海兰褐蛋鸡210只,采用单因子完全随机设计,分为7个组,每组3个重复,每个重复10只鸡,分别在饲粮中添加不同比例的苜蓿草粉和纤维素酶,依次为:0(对照组)、3％苜蓿草粉(试验I组)、5％苜蓿草粉(试验II组)、7％苜蓿草粉(试验Ⅲ组)、7％苜蓿草粉+0.1%纤维素酶(试验IV组)、7％苜蓿草粉+0.2%纤维素酶(试验V组)、7％苜蓿草粉+0.3%纤维素酶(试验VI组)。结果表明,1)添加苜蓿草粉和纤维素酶对蛋鸡的产蛋率、蛋重均无显著影响(P＞0.05),但试验Ⅲ组的采食量和试验Ⅴ组的料/蛋比对照组显著下降。2)在饲粮中添加不同水平的苜蓿草粉及纤维素酶后,对蛋黄相对重、蛋壳厚度、蛋黄pH和蛋白pH指标无改进,但高水平苜蓿草粉饲粮中添加纤维素酶提高了蛋重和蛋形指数,尽管和对照组及低用量的苜蓿草粉组相比差异不显著(P＞0.05);各试验组的蛋壳强度、哈夫单位和蛋黄颜色都得到提高,其中试验V组、VI组蛋壳强度较对照组差异显著(P＜0.05),均提高了39％,添加苜蓿草粉后,蛋黄颜色均显著改善(P＜0.05),且随着苜蓿草粉添加量的增加,蛋黄颜色呈上升趋势;高苜蓿草粉饲粮同时添加不同水平纤维素酶组,对蛋黄颜色提高有加强作用。 3)在鸡蛋保存期的7,14,21,28 d,饲粮中添加苜蓿草粉和纤维素酶均能显著降低蛋黄中丙二醛(MDA)含量,从而延长鸡蛋的货架期。4)在饲粮中添加不同水平的苜蓿草粉和纤维素酶,对粗蛋白质、钙和粗纤维的消化率有改进作用,其中试验Ⅴ组较试验Ⅲ组粗蛋白质、粗脂肪、粗纤维、酸性洗涤纤维消化率分别增加了14.79%(P＞0.05),8.48%(P＞0.05),15.91%(P＞0.05)和4.17%(P＞0.05)。总的来说,在蛋鸡饲粮中添加苜蓿草粉后对生产性能、蛋品质无显著影响,但能在一定程度上改善蛋品质,蛋黄颜色得到极显著提高,高水平的苜蓿草粉组添加纤维素酶后,对粗蛋白质、钙和粗纤维的消化率有改进。

Abstract:

The objectives of this study were to evaluate production performance, egg quality and nutrient digestibility of layers adding cellulase to alfalfa meal ration. An experiment was conducted using a total of 210 Highland Brown Layers aged 40 weeks to study those of index. Layers were randomly divided into 7 groups, 3 replicates for each group and 10 for each replicate. One of these groups was used as the control group, others were used as treatment groups including group I to group VI. The control group was fed the basic diet, group I to group VI were fed the diets containing alfalfa meal and cellulase in different levels (3%, 5%, 7%, 7%+0.1%cellulase, 7%+0.2% cellulase, 7%+0.3% cellulase), respectively. By a series experiment of feeding and digestion, the production performance, egg quality and nutrient digestibility of layers were measured in each group. The results showed that, 1) Layers fed diets added with alfalfa meal and cellulase had no significant difference for laying rate and egg weight (P＞0.05) than that of control group, however, average daily feed intake of the group III and feed/egg ratio of the group V were significantly decreased comparing with the control. 2)Addition of alfalfa meal and cellulase had no significant effects on egg white height, egg yolk pH, egg white pH, egg shape index, egg yolk index, and eggshell relative weight (P＞0.05), however, those of yolk color and eggshell strength, Haugh unit were significantly improved comparing with control, which egg yolk color was significant higher (P＜0.01) than that of control group and egg yolk color increased with the increasing of alfalfa meal. 3)The diets of adding alfalfa meal and cellulase significantly reduced the yolk malondialdehyde (MDA) content, which extend the shelf life of eggs. 4)There were no significant difference of dry matter, calcium, phosphorus digestibility among all groups (P＞0.05), but the apparent digestibility of crude protein, the crude fat, crude fiber and acid fiber in the group V increased by 14.79% (P＞0.05), 8.48% (P＞0.05), 15.91% (P＞0.05), 4.17% (P＞0.05), respectively,comparing with the group III. Generally, there were no significant difference of production performance, but it improved the egg quality, egg yolk color and digestibility of crude fibre and acid detergent fiber (ADF) as adding alfalfa meal and cellulase, recommending that 7% alfalfa meal+0.2% cellulase in the diet of layers.

中图分类号:

S831.5

夏素银,王成章,詹发柏,严学兵,刘起栓,陈艳荣,李海艳 . 苜蓿草粉饲粮添加纤维素酶对蛋鸡生产性能、蛋品质及养分利用率的影响[J]. 草业学报, 2011, 20(5): 183-191.

XIA Su-yin, WANG Cheng-zhang, ZHAN Fa-bai, YAN Xue-bing, LIU Qi-shuan, CHEN Yan-rong, LI Hai-yan, . Effect of adding cellulase to alfalfa meal ration on production performance, egg quality and nutrient digestibility on layers[J]. Acta Prataculturae Sinica, 2011, 20(5): 183-191.

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