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  

Effect of Wheat Substitution for Some Maize on Growth Performance,Apparent Digestibility and Serum Biochemical Parameters in Tibetan Sheep

作　　者：张峰硕 马博妍 吴振岭 陈渲 朱凯娜 王志有[1] 侯生珍[1] 桂林生 Zhang Fengshuo;Ma Boyan;Wu Zhenling;Chen Xuan;Zhu Kaina;Wang Zhiyou;Hou Shengzhen;Gui Linsheng(College of Agriculture and Animal Husbandry,Qinghai University,Xining 810016)

机构地区：[1]青海大学农牧学院,西宁810016

出　　处：《中国粮油学报》2024年第4期103-109,共7页Journal of the Chinese Cereals and Oils Association

基　　金：青海省科技厅帅才科学家项目(2022NK169)。

摘　　要：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。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 Tibetan sheep.Sixty Tibetan sheep of similar initial weight and healthy and disease-free at 2 to 3 months of age were randomly 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 concentrate.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 transaminase of the experimental group was significantly lower than that of the control group(P<0.05).(P<0.05);4)Rumen 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 transaminase content and thus improving liver function to maintain normal digestion and metabolism in Tibetan sheep.

关 键 词：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 

分 类 号：S826.8[农业科学—畜牧学]