35～60kg圩猪能量需要量研究

发布时间：2018-04-08 18:44

本文选题：圩猪　切入点：净能　出处：《西北农林科技大学学报(自然科学版)》2017年09期

【摘要】：【目的】确定35~60kg圩猪(阉公猪)维持和生长的净能与代谢能需要量参数,为安徽地方品种猪圩猪的科学饲养提供理论依据。【方法】选用30头平均体质量为(33.47±1.68)kg的健康圩猪(阉公猪)进行比较屠宰试验,于试验开始时随机屠宰6头,用以估测圩猪的初始体成分及能值,其余24头随机分为100%自由采食组(12头)、70%自由采食组(6头)和35%自由采食组(6头);当自由采食组12头猪的平均体质量达到约45kg时随机屠宰6头,完成中期屠宰;在自由采食组圩猪平均体质量约为60kg时全部屠宰完毕,完成末期屠宰。屠后分别收集每头猪的血+内脏、毛、骨骼、肌肉、脂肪和皮6个样品,每个样品采样500g左右。使用冷冻干燥法测定组织样品的干物质含量,制成风干样后测定各个样品的能量、蛋白质、脂肪和灰分,从而估算整头猪的营养成分含量和能量。消化代谢试验选用12头平均体质量达到(45.81±1.02)kg的健康圩猪,将其随机分为3个试验组,每组4头,饲喂饲粮和水平与比较屠宰试验相同,使用全收粪法收集粪、尿,测定粪中的干物质、氮、能值及尿液中的氮和能值。根据上述试验结果,通过建立一系列能量需要的析因模型,确定生长期圩猪(阉公猪)的能量需要参数。【结果】圩猪(阉公猪)生长期的维持净能为344.35kJ/(kg EBW~(0.75)·d),或334.20kJ/(kg BW~(0.75)·d),维持代谢能需要量为451.76kJ/(kg EBW~(0.75)·d),或436.07kJ/(kg BW~(0.75)·d),代谢能的维持效率为0.762。当日增体质量为300~700g时,生长净能需要量为5.53~18.83 MJ/d,生长代谢能需要量为9.72~32.22 MJ/d,用于生长的代谢能利用率为0.569。【结论】35~60kg圩猪(阉公猪)总代谢能需要量高于NRC(1998)推荐值(12.14~29.74 MJ/d)。
[Abstract]:[objective] to determine the parameters of net energy and metabolic energy requirements for maintenance and growth of 35~60kg boars.Used to estimate the initial body composition and energy value of fair pigs,The remaining 24 pigs were randomly divided into 100% free feed group (n = 12) and free feed group (n = 6) and 35% free feed group (n = 6), and 6 pigs were slaughtered at random when the average body mass of 12 pigs in the free feed group reached about 45kg, and 6 pigs were slaughtered at middle stage.When the average body mass of the free feed group was about 60kg, all the pigs were slaughtered and slaughtered at the end stage.The blood viscera, hair, bone, muscle, fat and skin of each pig were collected.The dry matter content of tissue samples was measured by freeze-drying method, and the energy, protein, fat and ash contents of each sample were measured after air-dried samples were made, so as to estimate the nutrient content and energy of the whole pig.Twelve healthy pigs with an average body mass of 45.81 卤1.02)kg were randomly divided into 3 groups, 4 in each group. The diet and level were the same as those in the comparative slaughter test. The feces and urine were collected by the method of total excrement collection.Determine dry matter, nitrogen, energy in feces and nitrogen and energy in urine.Based on the above experimental results, a series of factorial models for energy requirements are established.
【作者单位】：安徽农业大学动物科技学院;安徽安泰农业集团公司;
【基金】：国家星火计划重点项目(2014GA710002) 安徽省生猪产业技术体系项目(2014)
【分类号】：S828

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