饲粮能量水平对断奶藏仔猪生产性能、养分消化率和血液生化指标的影响

发布时间：2018-09-03 09:56

【摘要】：【目的】本试验旨在研究不同能量水平对舍饲断奶藏仔猪生产性能、养分消化率和血液生化指标的影响。【方法】选择体重(4.967±0.111)kg的健康断奶藏仔猪45头,随机分成5个处理,每个处理3个重复,每个重复3头猪。试验期28 d,分别饲喂藏猪消化能水平为11.72、12.13、12.55、12.97和13.39 MJ·kg~(-1)的饲粮,测定其生产性能和血液生化指标;进行消化试验,采用内源指示剂法测定饲粮的养分消化率。【结果】随着饲粮能量水平的升高,断奶藏仔猪日增重逐渐增加,料肉比逐渐降低(P0.05),而平均日采食量与平均末重没有显著差异(P0.05),11.72 MJ·kg~(-1)组日增重显著低于12.97与13.39 MJ·kg~(-1)组,而料重比显著高于其他各组(P0.05);干物质、粗脂肪、粗纤维与无氮浸出物的消化率随饲粮能量水平的上升逐渐提高(P0.05),总能消化率呈现先升高后降低的趋势(P0.05),粗蛋白质与粗灰分的消化率受饲粮能量水平的影响不显著(P0.05);血清谷草转氨酶与谷丙转氨酶浓度随饲粮能量水平的升高呈先降低后升高的趋势,消化能水平为12.13与12.55 MJ·kg~(-1)处理组谷丙转氨酶浓度显著低于其他组(P0.05),其他指标受饲粮能量水平的影响不显著(P0.05)。【结论】综合考虑生产性能、养分消化率和血液生化指标认为,饲喂断奶藏仔猪玉米豆粕型饲粮,当饲粮粗蛋白质水平为16%时,适宜的消化能水平为12.55 MJ·kg~(-1)。
[Abstract]:[objective] to study the effects of different energy levels on the performance, nutrient digestibility and blood biochemical indexes of weaned piglets. [methods] 45 healthy weanling piglets with body weight (4.967 卤0.111) kg were randomly divided into 5 treatments. Each treatment 3 repeats, each repeats 3 pigs. After 28 days of experiment, the pigs were fed with diets with digestible energy levels of 11.7212.1312.5g 12.97 and 13.39 MJ kg~ (-1), and their production performance and blood biochemical indexes were measured, and digestibility tests were carried out. The nutrient digestibility of diet was determined by endogenous indicator method. [results] with the increase of dietary energy level, the daily gain of weaned Tibetan piglets increased gradually. The feed to meat ratio decreased gradually (P0.05), but there was no significant difference between the average daily feed intake and the average end weight (P0.05). The daily gain in the 11.72 MJ kg~ (-1) group was significantly lower than that in the 12.97 and 13.39 MJ kg~ (-1) groups, while the feed weight ratio was significantly higher than that in the other groups (P0.05). The digestibility of crude fiber and nitrogen-free extract increased gradually with the increase of dietary energy level (P0.05), and the total energy digestibility increased first and then decreased (P0.05). The digestibility of crude protein and crude ash was not significantly affected by dietary energy level. (P0.05) the concentration of serum glutamic oxaloacetic transaminase and alanine aminotransferase decreased first and then increased with the increase of dietary energy level. The concentration of alanine aminotransferase was significantly lower in the treatment group of 12.13 and 12.55 MJ kg~ (-1) than that in the other groups (P0.05), and the other indexes were not significantly affected by the dietary energy level (P0.05). [conclusion] considering the production performance, the nutrient digestibility and the blood biochemical index, the results showed that: (1) the concentration of alanine transaminase was significantly lower than that of the other groups (P0.05). The optimum digestible energy level was 12.55 MJ kg~ (-1) when the dietary crude protein level was 16 and the weaning piglets were fed with corn-soybean meal diet.
【作者单位】：西藏农牧学院动物科学学院;云南省昆明市动物疫病预防控制中心;
【基金】：西藏自治区自然科学基金(2016ZR-15-37) “十二五”国家科技支撑计划项目(2012BAD03B03) 西藏自治区2016年厅校联合基金(2016ZR-NQ-03) 西藏特色农牧资源研发协同创新中心(HX2014006) 西藏特色畜牧种质资源创新平台项目(HX2014008)
【分类号】：S828.5

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