添加乳酸菌对杂种幼犬生长和养分利用的影响

K. Pasupathy, A. Sahoo, N. N. Pathak
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引用次数: 22

摘要

将8只平均体重为5.2 kg的10周龄左右的杂种幼犬分为对照组(C组)和益生菌添加组(L组),饲喂相同的饲料(饼干),L组添加2 × 107 cfu的嗜酸乳杆菌菌株。饲养试验为期13周,其中6 d为消化率试验,收集饲料和粪便,评估营养物质的摄入量和消化率。将生长记录为每周活重变化,并定期检查粪便的物理、化学和微生物特性,以评估乳酸菌对肠道健康的影响。饼干的粗脂肪含量为89%,粗蛋白质含量为32.6%,灰分含量为5.8%,粗脂肪含量为12.7%,总脂肪含量为890 g,总能含量为19.6 MJ / kg,总能含量为14.6 MJ / kg。DM、OM、CP和GE消化率为76% ~ 79%,粗脂肪消化率为93%。CF的消化率可以忽略不计(22%)。两组间无显著差异。在19周龄前,L组的日增重为102 g,而C组的日增重为92 g,此后差异逐渐减小。C组和L组全期平均日增重分别为74.5±8.0 g和81.6±6.0 g,差异无统计学意义(P>0.05)。两组粪便的物理性质和组成相似,pH值均为酸性。乳酸菌的补充引起幼犬胃肠道的竞争性建立。综上所述,乳酸菌的补充在活跃生长期(4.5月龄前)表现出积极的影响,在生命后期变得不显著。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effect of lactobacillus supplementation on growth and nutrient utilization in Mongrel pups
Effect of lactobacillus supplementation was studied in eight Mongrel pups of about 10 weeks of age with a mean body weight of 5.2 kg divided into two equal groups, control (group C) and a probiotic supplemented group (group L). Both groups received the same feed (biscuit) which was for group L supplemented with 2 × 107 cfu of a Lactobacillus acidophilus strain. The feeding trial lasted 13 weeks and included a digestibility trial of six days during which feed and faeces were collected to assess intake and digestibility of nutrients. Growth was recorded as weekly live weight change and the physical, chemical and microbiological characteristics of stool were examined periodically to assess the effect of lactobacillus on intestinal health. The biscuits contained 89% DM, 32.6% CP, 5.8% ash and 12.7% EE with TDN, GE and ME content of 890 g, 19.6 MJ and 14.6 MJ per kg DM, respectively. The DM, OM, CP and GE digestibilities were between 76% to 79% and the EE digestibility was 93%. The CF digestibility was negligible (22%). There were no significant differences between the two groups. There was an appetite stimulation and a relatively higher DM intake (10 to 15%) which induced higher daily gain, 102 g in group L vs. 92 g in group C up to 19 weeks of age, the difference declined thereafter. The average daily gain during the whole period was 74.5 ±8.0 g and 81.6 ±6.0 g in group C and L, respectively, and the difference was statistically non‐significant (P>0.05). The stools showed similar physical properties and composition with acidic pH in both groups. Lactobacillus supplementation caused a competitive establishment in the gastrointestinal tract of pups. It can be concluded that lactobacillus supplementation shows a positive effect during active growth phase (up to 4.5 months of age), which became insignificant in the later period of life.
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