蜂花粉对热应激种公鸡精液品质及内分泌机能的影响

选用44只48周龄新扬州鸡公鸡随机分成4组，每组11只，对照组饲喂基础日粮，分别在基础日粮中添加0.5%，1.0%，1.5%的蜂花粉，作为试验Ⅰ、Ⅱ、Ⅲ组探讨蜂花粉对种公鸡精液品质及内分泌机能的影响。结果表明：日粮中添加1.0%，1.5%的蜂花粉均能显著提高公鸡的精液量、精子活力和精子密度，而对公鸡的精子畸形率和精液的Ph值影响不明显；与对照组相比，添加1.5%蜂花粉的试验Ⅲ组的公鸡血浆中三碘甲腺原氨酸（T3）、皮质醇含量显著降低，甲状腺素（T4）显著升高。上述结果提示；在热应激条件下，日粮中添加一定量的蜂花粉可有效缓解热应激，显著提高夏季种公鸡的繁殖性能并影响其内分泌机能。     

种公鸡体重和体躯结构对精液品质及受精率的影响

１材料和方法１ １试验动物和试验设计每组种公鸡对应设置一组随机抽取的笼养种母鸡１５０只 ,进行人工授精。１ ２精液品质的测定包括精液量、ｐＨ值、精子活力、精子密度、精子数。１ ３每隔５ｄ人工授精一次通过标记种蛋 ,并同机孵化 ,１１ｄ照蛋 ,检出无精蛋。１ ４试验过程中进行日常饲养管理。２结果与讨论２ １体重对种公鸡精液品质和受精率的影响由表１可知 :１３６日龄种公鸡体重在２．０５～２．５０ｋｇ时 ,射精量多 ,精子活力和精液密度大 ,受精率较高。３６８日龄种公鸡体重在２．７５～２．９５ｋｇ内 ,精液品质较好 ,受精率…     

种公鸡精液品质的快速检测法

种公鸡精液品质的优劣是影响受精率的一个重要因素，其品质在个体之间存在很大差异，据统计只有1／3～1／2的公鸡其精液品质才是良好的，所以对精液质量的检测，挑选优秀种公鸡用于生产，是种鸡正常生产的重要保证。然而实验室检测方法比较复杂，设备要求相对较高，速度比较慢，在实际生产中应用较少，很多的种鸡场往往难以做到。在此     

不同笼养密度和饲粮对蛋用型公鸡精液品质及受精率的影响

<正> 许多试验和生产均已证明,笼养鸡人工授精生产种蛋,可以减少种公鸡的饲养数量,节省饲养成本,而且可以获得高而稳定的受精率。因此在人工授精技术中,怎样饲养管理公鸡是一个重要课题,其中公鸡笼养密度,饲粮营养水平,对保证公鸡健康,生产质优量高的精液尤为重要。     

中草药复方添加剂对繁殖后期种公鸡精液品质的影响

选用80只50周龄尼克T种公鸡随机分成Ⅰ、Ⅱ、Ⅲ、Ⅳ、Ⅴ组,每组16只。Ⅰ、Ⅱ组为对照组,分别饲喂基础日粮和基础日粮添加鸡蛋,Ⅲ、Ⅳ、Ⅴ组为试验组,分别饲喂在基础日粮的基础上添加1%、2%、3%中草药复方添加剂的日粮,研究中草药复方添加剂对繁殖后期种公鸡精液品质的影响。结果表明,日粮中添加中草药复方添加剂能显著提高种公鸡的精液量和精子活力,降低精子畸形率,其中2%添加组效果最明显。说明在繁殖后期种公鸡日粮中添加一定量的中草药复方添加剂可以显著提高种公鸡的精液品质。     

光照对公鸡生长发育及精液品质影响的研究

将114只15日龄“伊莎”公鸡,随机分为两组(实验和对照组),每组57只。实验组以15勒克斯的照度,9小时明;3小时暗:5小时明:7小时暗的间歇光照周期补加光照,使每天的光照时间达14小时,对照组仅接受自然光照。结果表明:不同日龄实验组鸡的体重均大于相应的对照组,而且在55日龄和75日龄时两组鸡的体重间相差极显著;各日龄段,实验组鸡群的料肉比均略低于相应的对照组;实验组鸡的射精量、精子密度略高于对照组,一次射精的精子总数显著的多于对照组,而死精子百分数低于对照组。     

日粮中锰水平对海兰褐种公鸡精液品质的影响

试验以海兰褐种公鸡为研究对象,研究日粮中锰水平对海兰褐种公鸡精液品质的影响。选取健康的海兰褐公鸡幼雏135只,随机分成9组,每组15只,任选一组为CK组,其余编为试验1～8组。CK组锰含量为110mg/kg,各试验组锰含量分别为124mg/kg、131mg/kg、138mg/kg、145mg/kg、152mg/kg、159mg/kg、166mg/kg、173mg/kg。饲养周期为30周。试验结果表明,日粮中添加锰可以显著提高精子活率,Ⅰ、Ⅱ、Ⅳ、Ⅶ、Ⅷ组与CK组之间存在显著性差异(P0.05);可以显著提高射精量,Ⅰ、Ⅱ、Ⅲ、Ⅵ组与CK组之间存在显著性差异(P0.05),可以显著提高精子密度,Ⅴ组和Ⅷ组、CK组、Ⅵ组与其余各组间之间均存在显著性差异(P0.05);可以显著提高受精率,Ⅰ、Ⅲ、Ⅳ、Ⅶ组与CK组之间存在显著性差异(P0.05)。其余指标无明显提高(P0.05)。     

种公鸡体形外貌及精液品质性状的聚类分析

本研究对种公鸡的体形外貌及精液品质共14个性状，用统计分析软件SPSS(Ver．11．0)进行了聚类分析，结果表明：在SPSS提供的聚类分析方法中，沃特氏(Ward’s method)聚类分析法把这些性状分为5类，能较全面反映性状实际情况。这一结果为种公鸡的体形外貌、精液品质的选育提供了科学依据。     

Relationship between testicular measurements, body weight and semen quality in young dairy bulls.

Dairy bulls, 322 Ayrshires (Ay) and 85 Friesians (Fr), were studied at the age of 11 months. Of the bulls, 286 Ay-bulls and 80 Fr-bulls produced semen of acceptable quality for use in A.I. Scrotal circumference, tonometer measure, scrotal fold thickness, 1-year body weight and testicular palpation were used to predict unsuitable bulls for A.I. Non-return rate was used as a measure of fertility. Scrotal fold thickness and 1-year weight had no significant correlation with fertility or semen quality. Scrotal circumference had a significant positive correlation with fertility. Tonometer ratio had a significant negative correlation with fertility. Testicular palpation was the best basis for predicting bulls with poor semen quality in this study. Twelve bulls were recorded as having testicles of different sizes, 1 testicle being more than 20% bigger than the other. Only 2 of these 12 bulls produced semen of acceptable quality. One of these 2 bulls was, after slaughter, diagnosed as having a hereditary testicle disease. Friesians were shown to have significantly higher fertility than Ayshires.     

新扬州鸡公鸡体型结构和精液品质的测定分析

测定了32只40周龄新扬州鸡公鸡体型结构和精液品质,结果表明公鸡体重、体斜长、胸宽、胸围和胸骨长等5个性状间呈显著正相关（P＜0．05）,精液量与有效精子数之间呈显著正相关（P＜0．01）。公鸡体型结构和精液品质间的通径分析表明,胸围和胫长是决定精液浓度的重要因子,其中胸围对精液的直接效应为0．46,胫长对精液浓度的效应为－0．54。     

不同营养水平日粮对马头山羊种公羊体重和精液品质影响的研究

通过对马头山羊种公羊39只在配种期、30只在非配种期应用不同营养水平的日粮饲养,然后检测公羊的性欲、射精量、精子密度和精子活力等项指标,分析日粮营养水平对配种期和非配种期种公羊体重和精液品质的影响.结果表明,无论在配种期还是在非配种期,种公羊的体质和繁殖性能与营养水平呈正相关,高水平和中等水平营养日粮对其影响差异不显著,建议采用中等水平的日粮,在配种高峰期可以适当提高营养水平,添加精料和矿物质元素的比例,以保持其健康的体质和良好的繁殖性能.     

Relationship of age to body weight,scrotal circumference,testicular ultrasonograms,and semen quality in Sahiwal bulls

The objective of the present study was to determine the relationship of age to body weight (BW), scrotal circumference (SC), number of pixels of testicular ultrasonograms (NP), and semen quality in Sahiwal bulls. The study was based on 128 Sahiwal bulls of different age groups (from 0 to >100 months of age). Bulls were evaluated for SC, BW, and NP. Semen was evaluated once a week for five consecutive weeks from regularly collected donor bulls (n = 86) ranging in age from 25–30 to >100 months. Ejaculate volume, sperm motility, sperm concentration, sperm morphology, percent live sperms, sperm plasma membrane integrity, and normal acrosome were compared among different age groups. Mean SC and BW increased (P < 0.05) in a curvilinear manner from birth to >100 months of age. Mean NP of testicular ultrasonograms increased (P < 0.05) from 0 to 24 months and then plateaued until >100 months of age. Body weight, SC, and NP were positively correlated with age from birth until >100 months (r = 0.91, 0.87, and 0.40, respectively). Ejaculate volume (5.7 ± 0.2 vs. 4.6 ± 0.09 ml) and sperm concentration (1,281.6 ± 17.7 vs. 1,115.8 ± 55.9 × 10⁶/ml) increased (P < 0.05) in mature bulls compared to younger ones. However, motility (68.6 ± 0.3%), plasma membrane integrity (50.8 ± 1.0%), and normal acrosome (74.8 ± 0.5%) remained insignificant due to age. In six of eight age groups studied, morphological abnormalities were well within the range (18.1 ± 0.3%). In conclusion, the BW, SC, and NP of testicular ultrasonograms, ejaculate volume, and concentration increased with age. Moreover, semen quality is fairly independent of age except volume and concentration in Sahiwal bulls.     

蜂花粉的干燥与贮存

花粉是植物的雄性生殖器官,贮存着极为丰富的营养成分。刚采收的蜂花粉水分含量20%～30%,若不及时处理很容易发霉变质;另外,蜂花粉有虫卵,在适宜温度下会孵化;同时鲜花粉团质地疏松湿润,容易散团,久置会变成一些糊状物,无法食     

蜂花粉与松花粉差价问题应引起关注

蜂花粉被国内外营养家称之为"天然的营养宝库"。蜂花粉资源丰富,能够收购到的商品蜂花粉原料有30多个品种,我国每年都出口大量蜂花粉。然而由人工收集、产量不大的松花粉,其营养成分远     

蜂花粉功能食品的研究思路

一、从传统蜂花粉到蜂花粉功能食品 蜂花粉是许多具有营养价值和药效价值的物质所组成的复杂浓缩物，它富含蛋白质、碳水化合物、脂类、核酸、矿物质、维生素和其它活性物质、氨基酸等。据分析，蜂花粉中活性酶类多达80余种，氨基酸含量是牛肉、鸡蛋中氨基酸含量的6～7倍；核酸含量是鸡肝、虾米的5～10倍；维生素含量远远超过许多种新鲜水果和蔬菜，常量和微量元素多达27种以上，因而享有“全价营养源”、“高浓缩微型营养库”美称。