补喂γ-氨基丁酸对哺乳期伊犁马驹生长发育及血液相关指标的影响

发布时间：2018-06-25 06:55

  本文选题：γ-氨基丁酸 + 哺乳期伊犁马驹　； 参考：《新疆农业大学》2015年硕士论文

【摘要】：γ-氨基丁酸(GABA)作为一种氨基酸类饲料添加剂,被广泛应用于动物日粮中,具有增强动物采食能力、生长性能及免疫力等生物学效应,但是国内外关于GABA在哺乳期马驹中的应用鲜有报道,因此本试验探究补喂不同剂量水平GABA对哺乳期伊犁马马驹生长性能及血液相关指标的影响,为GABA在哺乳期马驹生长发育中的应用提供参考依据。试验选取年龄2~3月龄体重相近的哺乳期伊犁马驹20匹进行试验。按体重相近、公母对等原则分为4组,每组5匹,分别为对照组、试验Ⅰ组、试验Ⅱ组和试验Ⅲ组。对照组只补喂基础日粮,试验Ⅰ组补喂基础日粮和40 mg/d/匹GABA,试验Ⅱ组补喂基础日粮和80 mg/d/匹GABA,试验Ⅲ组补喂基础日粮和120 mg/d/匹GABA。分别在试验第0 d、30 d、60 d和90 d时下午18:00、18:30和20:00进行驹颈静脉血液采集、体尺测量及称重。结果显示:试验90 d后试验Ⅱ组和试验Ⅲ马驹平均日增重相比对照组分别提高18.07%(P0.05)和6.02%(P0.05),试验30 d后试验Ⅰ、Ⅱ、Ⅲ组马驹日增体高相比对照组分别提高11.76%(P0.05)、46.67%(P0.05)和43.33%(P0.05),试验90 d后试验Ⅰ、Ⅱ、Ⅲ组马驹日增体高相比对照组分别提高25%(P0.01)、25%(P0.01)和35%(P0.01)。血液指标方面:在试验第30 d时试验Ⅰ、Ⅱ、Ⅲ组马驹血浆生长激素水平分别高于对照组4.35%(P0.05)、10.72%(P0.05)、10.43%(P0.05),血浆白蛋白水平高于对照组2.79%(P0.05)、4.16%(P0.01)、1.07%(P0.05);在试验第90 d时,试验Ⅱ组马驹血浆神经肽Y水平高于对照组38.03%(P0.01),血浆总蛋白水平高于对照组4.58%(P0.05)。补喂后发现从试验第0 d到第90 d试验Ⅰ、Ⅱ、Ⅲ组马驹血浆GABA、IgA和IgG水平均呈现出上升趋势,但血浆胃泌素、生长抑素和尿素氮含量无显著变化。本试验结果表明:补喂GABA可提高哺乳期马驹生长性能、免疫性能和抵抗力,且综合发现以80 mg/d GABA组效果最佳。此外,GABA可能主要通过神经肽Y、生长激素的调节对哺乳期马驹生长发育进行调控。
[Abstract]:纬 -aminobutyric acid (GABA), as an amino acid feed additive, is widely used in animal diets and has biological effects such as enhancing animal feeding ability, growth performance and immunity. However, there are few reports on the application of GABA in lactation pony, so the effect of supplementation with different doses of GABA on growth performance and blood related index of Yili pony during lactation was investigated. To provide a reference for the application of GABA in the growth and development of foal during lactation. A total of 20 Yili ponies of the same age and 3 months of age were selected to carry out the experiment. According to the principle of equal weight, male and female were divided into 4 groups: control group, trial group 鈪，

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