日本对虾内陆养殖的实验室模拟研究

我们将日本对虾进行实验室桶养作模拟内陆养殖试验。发现日本对虾可以顺利地养殖到体长５－７厘变,然后短人存活率急剧降低,这一现象与我们海边虾塘养殖所得到的结果极为一致,我们称之为“５－７”现象。     

不同倍性鸭茅同功酶比较研究

采用生化遗传学的方法,对我国亚热带地区几个二倍体和四倍体野生鸭茅不同生育期的酯酶,过氧化物酶同功酶进行了比较研究。结果表明,鸭茅二倍体各品系之间,四倍体各品种（系）之间的同源性较高,遗传差异较小,二倍体与四倍体之间,酯酶,过氧经物酶同功酶等都有较大差异。     

山羊亚硝酸盐中毒口液,尿液,棉签偶氮显色快速诊断方法的研究

建立山羊亚硝酸盐中毒模型,用棉签分别蘸取口液、尿液立即滴加偶氮试剂均显粉红色,中毒后１０～２０ｍｉｎ显浅粉红色;６０ｍｉｎ显深粉红色,随中毒症状加重,棉签显色相应加深,甚致变为棕红色。同时棉签显色加深和血液褐变程度加重与ＭＨｂ／Ｈｂ比值升高同步。此种诊断方法是诊断亚硝酸盐中毒的动物可靠、灵敏和快速的诊断方法。     

三角城藏羊红细胞钾型的研究

采用火焰光度测定法对青海省三角城种羊场１０１只藏羊的红细胞钾型进行了研究，结果发现高钾型羊８０只（７９．２１％），低钾型羊２１只（２０．７９％），Ｋ￣ｂ和Ｋ￣Ｌ等位基因频率分别为０．８９００和０．１１００，同时还讨论了藏羊红细胞钾型与血红蛋白型的关系。     

浅析集约化鸡场鸡肾脏病变的病因及防治

禽痛风是由于家禽体内蛋白质代谢障碍产生大量的尿酸或肾脏受损伤导致尿酸及尿酸盐排泄障碍,大量尿酸及尿酸盐在肝脏、胃肠、肠系膜、心脏、输尿     

ELISA对动物舍气载魏氏梭菌型别的研究

采用ELISA方法对从一个犊牛舍空气中分离到的魏氏梭菌进行型别的鉴定。结果显示：88％的菌种属于A型，3.4％为C型，8.6％是D型，B型未能确认。     

奶牛环形泰勒焦虫病诊治报告

２０００年６月上旬至７月下旬，我县营子、七贤等乡镇发生一种呈地方性流行或散发的急性奶牛疾病，以高热稽留、体表淋巴结肿大、贫血为主要特征。根据流行病学、临床症状、剖检变化、实验室诊断，确诊为奶牛环形泰勒焦虫（Ｔ．ａｎｎｕｌａｔａ）病，现报告如下：１流行病学从６月上旬开始陆续发病，发病率达２５％，其中死亡２头。该病以一胎母牛多发。经调查，多为带犊由外地购进，本地饲喂时间不足一年。检查牛体，能发现吸饱血或未吸饱血的豆粒大或米粒大牛蜱。２临床症状病牛初期体温上升高达４１℃，稽留热。肩前和鼠蹊淋巴结肿大，…     

犬乳腺肿瘤病的诊治1例

乳腺肿瘤是母犬最为常见的一类疾病,老龄母犬多见,公犬少见。美国的一项调查发现,乳腺肿瘤占犬类所有肿瘤的13．4％,而这些肿瘤有41．7名发生于未节育的母犬。据统计,纯种犬发病率高于杂种犬。肿瘤中恶性肿瘤约占40％。     

桑花叶病病原及化学药剂治疗的研究

桑花叶病的症状种类较多，是由多种植物病原病毒寄生引起发病，其中有一种是暂定名为桑斑块花叶病，其症状主要是形成退绿斑块花叶，畸形叶或叶形变长。病原病毒为球形，直径25～30nm，主要通过嫁接传病。化学药剂吖橙对此病有明显抑制作用，从而使病桑树康复并增产。     

Effects of single or combined dietary supplementation of β-glucan and kefir on growth performance,blood characteristics and meat quality in broilers

1. This study was conducted to evaluate the effects of dietary β-glucan and kefir (a fermented milk product) on growth performance, blood profiles, relative organ weight and meat quality in broilers.

2. A total of 375 day-of-hatch mixed sex ROSS 308 broilers (BW of 46 ± 0.1 g) were used in a 5-week experiment and randomly allotted to one of the following dietary treatments: (1) NC, basal diet; (2) PC, basal diet + 40 mg/kg of avilamycin; (3) B, NC + 0.1% β-glucan; (4) K, NC + 0.1% kefir; (5) BK, NC + 0.1% β-glucan + 0.1% kefir.

3. During weeks 0–3, broilers in B, K and BK treatments had higher body weight gain (BWG) than those in NC treatment. During weeks 4–5, BK treatment had a higher BWG than NC treatment. Overall, broilers given PC, K and BK diets had higher BWG than those given NC diet. The feed efficiency ratio (FCR) was improved by PC treatment.

4. Relative liver weight was increased by B treatment, whereas the relative weight of breast meat and gizzard was higher in BK group than that in NC group. Broilers given PC, B and BK diets had greater breast meat redness value and reduced drip loss at d 5 and d 7. The cooking loss was also reduced by B and BK treatments compared with NC treatment.

5. In conclusion, the results suggested that inclusion of 0.1% β-glucan and 0.1% kefir, either individually or combined, would improve growth performance and benefit meat quality in broiler chickens.