动物营养学报 >

2015 , Vol. 27 >Issue 5: 1361 - 1369

DOI: https://doi.org/10.3969/j.issn.1006-267x.2015.05.005

猪营养 Swine Nutrition

不同饲粮氨基酸水平对生长期后备母猪生长性能、血清生化指标和氨基酸浓度的影响

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  • 1. 福建省农业科学院畜牧兽医研究所, 福州 350013;
    2. 福建光华百斯特生态农牧发展有限公司, 福州 350003
董志岩(1965—),男,福建仙游人,研究员,主要从事猪饲料营养与养猪生产新技术的研究与开发。E-mail:2936237922@qq.com

收稿日期: 2014-11-05

  网络出版日期: 2015-05-13

基金资助

福建省科技重大专项专题(2012NZ0003-3)

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Effects of Dietary Amino Acid Levels on Growth Performance, Serum Biochemical Parameters and Amino Acid Concentrations of Prepubertal Gilts in Growing Phase

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  • 1. Institute of Animal Husbandry and Veterinary Medicine, Fujian Academy of Agriculture Sciences, Fuzhou 350013, China;
    2. Fujian Guanghua Best Eco-Agriculture Development Co. Ltd., Fuzhou 350003, China

Received date: 2014-11-05

  Online published: 2015-05-13

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摘要

本试验旨在研究理想氨基酸模式下,不同饲粮氨基酸水平对生长期后备母猪生长性能、血清生化指标和氨基酸浓度的影响。选用120头体况相似、平均体重为(19.00±1.50) kg的长大二元母猪,随机分成4个组,每个组3个重复,每个重复10头猪,分别饲喂4种不同可消化赖氨酸(DLys)水平的玉米－豆粕型饲粮。20~40 kg阶段,饲粮DLys水平为0.78%(1组)、0.83%(2组)、0.88%(3组)、0.93%(4组);40~70 kg阶段,饲粮DLys水平为0.68%(1组)、0.73%(2组)、0.78%(3组)、0.83%(4组),并通过添加4种合成氨基酸保证4组饲粮中DLys、可消化含硫氨基酸、可消化苏氨酸、可消化色氨酸的比值(100:60:65:18)一致。结果表明,20~40 kg阶段,试验2组平均日增重(569.69 g)达到最大,料重比(2.24)最低;试验2组血清尿素氮浓度显著低于试验3和4组(P<0.05),与试验1组差异不显著(P>0.05);试验2组血清类胰岛素生长因子Ⅰ浓度显著高于试验3和4组(P<0.05),与试验1组差异不显著(P>0.05);血清游离赖氨酸、苏氨酸浓度2组显著低于试验3和4组(P<0.05),血清游离亮氨酸、异亮氨酸、苯丙氨酸和缬氨酸浓度2组显著低于试验3和4组(P<0.05)。40~70 kg阶段,试验3组平均日增重(787.43 g)达到最大,料重比(2.55)最低;试验3组血清尿素氮浓度显著低于其他试验组(P<0.05),血清类胰岛素生长因子-Ⅰ浓度各组间差异不显著(P>0.05);血清游离赖氨酸、苏氨酸浓度试验3组显著低于试验1、2组(P<0.05)。由此可见,在本试验条件下,长大后备母猪20~40 kg阶段适宜饲粮DLys水平为0.83%,以消化能浓度表示为0.61 g/MJ,40~70 kg阶段适宜饲粮DLys水平为0.78%、以消化能浓度表示为0.57 g/MJ。

关键词： 可消化赖氨酸; 生长性能; 血清生化指标; 氨基酸浓度; 生长期后备母猪

本文引用格式

董志岩, 方桂友, 刘亚轩, 刘景, 缪伏荣, 叶鼎承, 林长光 . 不同饲粮氨基酸水平对生长期后备母猪生长性能、血清生化指标和氨基酸浓度的影响[J]. 动物营养学报, 2015 , 27(5) : 1361 -1369 . DOI: 10.3969/j.issn.1006-267x.2015.05.005

Abstract

This study was conducted to evaluate the effects of different dietary amino acid levels on the growth performance, serum biochemical parameters and amino acid concentrations of prepubertal gilts in growing phase based on ideal amino acid pattern. A total of one hundred and twenty two-line crossbred (landrace × large white), with (19.00±1.50) kg of average body weight and similar body conditions, were allocated to four groups with three replicates per group and ten gilts per replicate. The corn-soybean meal diets with four different digestible lysine levels were used respectively and the same digestible amino acid pattern (digestible lysine:digestible sulphur amino acids:digestible threonine:digestible tryptophane=100:60:65:18) by adding synthetic amino acids for the early (20 to 40 kg) and late (40 to 70 kg) growing phases. In 20 to 40 kg phase, the gilts were fed with four diets with different digestible lysine levels of 0.78% (group 1), 0.83% (group 2), 0.88% (group 3) and 0.93% (group 4). In 40 to 70 kg phase, the gilts were fed with another four diets with different digestible lysine levels of 0.68% (group 1), 0.73% (group 2), 0.78% (group 3) and 0.83% (group 4). The results showed as follows: at phase of 20 to 40 kg, average daily gain (ADG) (569.69 g) of prepubertal gilts was the highest and feed/gain (F/G) (2.24) was the lowest in group 2 (P<0.05). The concentration of serum urea nitrogen (UN) in group 2 was significantly lower than that in groups 3 and 4 (P<0.05), and there was no significant difference with that in group 1 (P>0.05). The concentration of insulin-like growth factor Ⅰ (IGF-Ⅰ) in group 2 was significantly higher than that in groups 3 and 4 (P<0.05), and there was no significant difference than that in group 1 (P>0.05). The concentrations of serum lysine, threonine in group 2 were significantly lower than those in groups 3 and 4 (P<0.05), the concentrations of serum leucine, isoleucine, phenylalanine and valine in group 2 were significantly lower than those in groups 3 and 4 (P<0.05). At phase of 40 to 70 kg, the ADG (787.43 g) was the highest and F/G (2.55) was the lowest in group 3 (P<0.05). The concentration of serum UN in group 3 was significantly lower than that in the other groups (P<0.05), and the concentration of IGF-Ⅰ was no significant difference among the groups (P>0.05). The concentrations of serum lysine, threonine in group 3 were significantly lower than those in groups 1 and 2 (P<0.05). In conclusion, the optimum level of DLys in gilts weighting 20 to 40 kg and 40 to 70 kg based on this experiment were 0.85% and 0.78%, or 0.61 and 0.57 g/MJ as expressed with digestive energy (DE), respectively.

Key words： digestible lysine; growth performance; serum biochemical parameters; amino acid concentrations; prepubertal gilts in growing phase

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