不同品系生长期德州驴生长性能、消化率及血清生化指标的比较

Comparison of Growth Performance, Digestibility, and Serum Biochemical Indicators among Different Strains of Dezhou Donkeys During the Growth Period

摘要

本研究以不同品系生长期德州驴为研究对象，探究其生长性能、消化率及血清生化指标的差异，以期为制定其个性化饲养标准提供数据支撑。试验选用德州驴驹40头，分为三粉公驴组、三粉母驴组、乌头公驴组以及乌头母驴4个处理组。试验预饲期30 d，正试期90 d，4个处理组采食同一种全价颗粒型饲粮，期间自由采食。结果表明：乌头公驴的平均日增重和料重比显著优于三粉公驴（ P<0.05），不同品系德州母驴平均日采食量、平均日增重和料重比等均无显著差异（ P>0.05）；乌头公驴在有机物、碳水化合物和中性洗涤纤维的消化率上显著高于三粉公驴，而乌头母驴对无氮浸出物的消化率则显著低于三粉母驴（ P<0.05），乌头公驴血清中尿酸和葡萄糖水平显著高于三粉公驴，甘油三酯水平低于三粉公驴（ P<0.05），乌头母驴血清中葡萄糖水平显著高于三粉母驴，乌头母驴总蛋白和尿酸水平低于三粉母驴（ P<0.05）。综上所述，在本试验条件下，相较于三粉公驴，乌头公驴在生长性能、营养利用及代谢方面更具优势，德州母驴不同品系之间生长性能无显著差异。

Abstract

This study takes growing-period Dezhou donkeys of different strains as the research object, aiming to explore the differences in growth performance, digestibility, and serum biochemical indicators in order to provide data support for formulating their personalized feeding standards. The experiment selects 40 Dezhou donkey foals, and divides them into four treatment groups: Sanfen Male Donkeys, Sanfen Female Donkeys, Wutou Male Donkeys, and Wutou Female Donkeys. The trial includes a 30-day adaptation period and a 90-day formal trial period, during which the four treatment groups are fed the same kind of complete pelleted diet and allowed to feed freely. The results indicate that the Wutou male donkeys show significantly higher average daily gain and better feed-to-gain ratio compared to the Sanfen male donkeys ( P<0.05), while for female donkeys of different strains, there are no significant differences in average daily feed intake, average daily gain, or feed-to-gain ratio ( P>0.05). Regarding nutrient digestibility, Wutou male donkeys have significantly higher digestibility of organic matter, carbohydrates, and neutral detergent fiber than Sanfen male donkeys, whereas Wutou female donkeys have significantly lower digestibility of nitrogen-free extract than Sanfen female donkeys ( P<0.05). In serum biochemical indicators, Wutou male donkeys exhibit significantly higher levels of uric acid and glucose, but lower levels of triglycerides than Sanfen male donkeys ( P<0.05). For females, Wutou donkeys have significantly higher serum glucose levels, but lower levels of total protein and uric acid than Sanfen female donkeys ( P<0.05). In summary, under the conditions of this trial, Wutou male donkeys demonstrate advantages over Sanfen male donkeys in terms of growth performance, nutrient utilization, and metabolism. However, no significant differences in growth performance are observed between different strains of female Dezhou donkeys.

关键词

不同品系 / 生长期德州驴 / 生长性能 / 消化率 / 血清生化

Key words

Different breeds / growing Dezhou donkeys / growth performance / digestibility / serum biochemical indicators

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基金资助

山东省重点研发计划（农业良种工程）项目(2023LZGCQY020)

山东省现代农业产业技术体系(SDAIT-27-03)

山东省现代农业产业技术体系(SDAIT-23-05)