首页|小麦替代部分玉米对藏羊生长性能、表观消化率和血清生化指标的影响

小麦替代部分玉米对藏羊生长性能、表观消化率和血清生化指标的影响

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本实验旨在研究小麦替代精料中部分玉米对藏羊生长性能、表观消化率、血清生化指标和脏器发育的影响.选取60只初始体质量相近,健康无病的2~3月龄藏羊,随机分成2组,每组30只,每组5个重复.对照组饲喂玉米型基础日粮,实验组饲喂质量分数为10%小麦替代精料中部分玉米.实验期100 d,其中预饲期10 d,正试期90 d.结果表明:1)实验组的终末体质量、平均日增重、体长和体躯指数显著高于对照组(P<0.05).2)实验组中粗蛋白、粗纤维、中性洗涤纤维、酸性洗涤纤维和粗灰分的表观消化率显著高于对照组(P<0.05).3)实验组中谷草转氨酶显著低于对照组(P<0.05).4)瘤胃质量和皱胃质量实验组显著高于对照组(P<0.05).因此,在藏羊日粮中添加质量分数为10%小麦粉替代精料中部分玉米能有效提高藏羊的表观消化率,从而使藏羊对其日粮的利用率增加提高其生长性能和脏器质量,同时还能降低血清中谷草转氨酶含量从而改善肝脏功能,以维持藏羊正常的消化代谢.
Effect of Wheat Substitution for Some Maize on Growth Performance,Apparent Digestibility and Serum Biochemical Parameters in Tibetan Sheep
The aim of this experiment was to investigate the effects of replacing some maize in the concentrate with wheat on growth performance,apparent digestibility,serum biochemical indices and organ development of Tibet-an sheep.Sixty Tibetan sheep of similar initial weight and healthy and disease-free at 2 to 3 months of age were ran-domly divided into 2 groups of 30 sheep each with 5 replicates in each group.The control group was fed a maize based diet,and the experimental group was fed with 10%wheat as a replacement for some of the maize in the con-centrate.The results indicated that,1)the final weight,mean daily gain,body length and body mass index of the experimental group were significantly higher than those of the control group(P<0.05);2)the apparent digestibility of crude protein,crude fibre,neutral detergent fibre,acid detergent fibre and crude ash of the experimental group were significantly higher than those of the control group(P<0.05);3)the apparent digestibility of cereal grass transami-nase of the experimental group was significantly lower than that of the control group(P<0.05).(P<0.05);4)Ru-men mass and wrinkled stomach mass of the experimental group were significantly higher than those of the control group(P<0.05).Therefore,The mass fraction of 10%wheat flour to the diet of Tibetan sheep to replace some of the maize in the concentrate can effectively improve the apparent digestibility of Tibetan sheep,thus increasing the utilisation of their diet and improving their growth performance and organ weights,as well as reducing the serum glutamic transami-nase content and thus improving liver function to maintain normal digestion and metabolism in Tibetan sheep.

Tibetan sheepnutrition regulationwheatgrowth and developmentnutrient digestibilityserum bio-chemical index

张峰硕、马博妍、吴振岭、陈渲、朱凯娜、王志有、侯生珍、桂林生

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青海大学农牧学院,西宁 810016

藏系绵羊 营养调控 小麦 生长发育 营养消化率 血清生化指标

青海省科技厅帅才科学家项目

2022NK169

2024

中国粮油学报
中国粮油学会

中国粮油学报

CSTPCD北大核心
影响因子:1.056
ISSN:1003-0174
年,卷(期):2024.39(4)
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