饲料的感官鉴定

通过人的视觉、味觉、嗅觉、触觉等对饲料进行检验评价的方法，或是根据饲料的颜色、形体、软硬度、气味等直接作用于人体感觉器官所引起的反应进行饲料的检验的方法，称为感官法。此方法具有简单、快速、不需用特殊器材就可鉴定等优点。     

影响饲料适口性的主要因素及改善措施

饲料适口性(palatability)是饲料的滋味、香味和质地特性的总和,是动物在觅食、定位和采食过程中视觉、嗅觉、触觉和味觉等感觉器官对饲料的综合反应,它通过影响动物的食欲来影响采食量。而采食量是衡量动物摄入营养物质数量的尺度,因而是影响动物生产效率的重要因素。饲料适口     

Effects of Various Degrees of Antennal Ablation on Mating and Oviposition Preferences of the Diamondback Moth,Plutella xylostella L.

Using scanning electron microscopy, we investigated the distribution of the trichoid, basiconic, and coeloconic sensilla on the antennae of the diamondback moth （DBM;Plutella xylostella）. The trichoid sensilla were the most abundant sensory organ, and the male moth antennae host signiifcantly more trichoid sensilla than female moth antennae. Conversely, basiconic and coeloconic sensilla were found more frequently on female than on male antennae. We performed experiments with various degrees of antennal ablation and demonstrated that DBM antennae played a key role in the control of mating and oviposition. We found that neither oviposition preference nor mating behaviors changed signiifcantly when less than 1/4 of both antennae were removed. However, there was a signiifcant behavioral change when the antennae were ablated by more than half. As the length of the antenna was shortened, the successful mating rate decreased and mating peak was delayed. An otherwise consistent host preference for oviposition was eliminated when both antennae were completely removed. Furthermore, we found that the number of trichoid sensilla was positively correlated with mating rate and oviposition preference. However, the numbers of basiconic and coeloconic sensilla were not correlated with mating rate and mating peak, but highly correlated with oviposition preference. Taken together, our results indicate that antennal sensory information plays a critical role in the mating and oviposition behaviors of this economically important pest.     

欧洲七国共同合作研发新传感技术检测鱼的新鲜度

MUSTEC工程的建立是为了研发多传感技术米检测盘的质量.它能模拟人的感觉器官迅速检测鱼的新鲜度。这个工程由七个欧洲国家共同参加实施．包括英国，冰岛．挪威．西班牙，德国，意大利和丹麦。工程的最终目的是要运用物理工具替代人的判断力研发出食品质量检测新方法。     

七丑战海洋(下)

<正>5.海参我长得像黄瓜吗?可能会有人说像,也有人说不像。黄瓜有大脑吗?这个肯定没有。告诉你一个我跟谁都没说的秘密:我不但没有真正的大脑,也缺乏像样感觉器官。我想这可能也是人们把我叫做"海黄瓜"的另一个原因。都说"傻人有福",我也有我的看家本领。我体内的胶原蛋白能让我像气球一     

桑蚕摘除部分感觉器对人工饲料摄食性的影响

桑蚕摘除了触角,下颚须或下颚瘤状体后,对人工饲料的摄食性均显著提高,摄食性个体差异减小,对桑叶或人工饲料正趋性强的个体,其摄食性较高,人工饲料中不仅存在蚕的味觉有明显抑制作用的物质,也存在对嗅觉有忌避作用的成分,嗅觉在决定对人工饲料摄食性方面具有重要作用。     

影响肉类感官质量的因素

肉类泛指动物经屠宰加工,除去皮、毛、头、蹄、骨及内脏后的可食用的部分。新鲜、品质优良的肉类色泽鲜亮并富有弹性,并因畜禽种类、品种、饲喂管理方式及屠宰阶段等因素的差异,表现不同的颜色、气味和质地。如猪肉鲜红色、牛肉深红色、羊肉浅红色、鸡肉和兔肉粉红色、鱼肉类白色。人们通常是凭借视觉、嗅觉和触觉等感觉器官选择肉类,因此肉类的感官特征是评价肉质的重要指标。     

茸鹿的生物学特性

<正>1野性茸鹿野性强,性情勇猛而又胆小易惊,行动谨慎,感觉敏锐,应激性强。茸鹿有良好的感觉器官,尤以听觉和视觉最为发达。耳壳大,直立头上能及时觉察和辨别各种声响。嗅觉器官是鹿在活动中辨别方向、觅食、追逐异性和逃避敌害的重要工具。茸鹿的视觉特别发达,可以环视周围的各种情况和发现几百米以外猛兽和人的活动。其感觉器官敏锐,能及时发现异常情况,迅速作出反应,逃离险地。当遇到危险时跳跃高度达1.1m、距离可达6m