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种公牛采精台的运用与遴选标准
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作者 王海利 侯娟 何斌 《河南畜牧兽医》 2024年第2期7-8,共2页
该文详细阐述现阶段种公牛采精台运用现状,假台牛与活台牛两种采精台对比和它们各自的优劣势,活台牛遴选的原则、方法和标准以及在使用活台牛时所注意的事项,以助于遴选出好的活台牛,延长使用年限,减少淘汰率,降低成本投入,增加经济效益。
关键词 采精 台牛 遴选
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公牛的采精技术 被引量:1
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作者 唐学成 王宪山 王奎喜 《辽宁畜牧兽医》 1999年第4期8-8,共1页
公牛的采精是牛冷冻精液人工授精技术的重要环节。这项工作的开展直接影响公牛精液的品质,进而影响到冷冻精液的产量和种公牛的利用率。它包括采精前的准备、采精的技术操作和采精频率等。1 采精前的准备1.1 场地的准备 采精要有室内采... 公牛的采精是牛冷冻精液人工授精技术的重要环节。这项工作的开展直接影响公牛精液的品质,进而影响到冷冻精液的产量和种公牛的利用率。它包括采精前的准备、采精的技术操作和采精频率等。1 采精前的准备1.1 场地的准备 采精要有室内采精场。要求场地宽敞、平坦、干净不起尘土,便于冲洗除粪,温度保持在5℃以上。场地内设有采精架,用以固定台牛,利于公牛爬跨。室内设有拴系架,用于拴系待采公牛。1.2 台牛的准备 台牛供公牛爬跨用,分为活台牛和假台牛。活台牛可以大大增强公牛的性欲,因而在生产上被普遍采用。在台牛的选择上,要求体格健壮、性情温和、高矮适合于采精公牛,用公牛或母牛均可。由于母牛的特殊性,更利于提高公牛的性兴奋,适宜给性欲低下的公牛作台牛。采精前,台牛要固定牢。台牛的后躯。 展开更多
关键词 公牛 采精 台牛 人工授精
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Study on Carcass Traits of Changtai Yak 被引量:2
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作者 赵洪文 毛进彬 +4 位作者 阿农呷 罗晓林 安添午 焦卫民 任洪辉 《Agricultural Science & Technology》 CAS 2017年第3期473-475,486,共4页
For studying the germplasm charactedsUcs and carcass traits of Changtai yak, 8 adult yaks (5 male, 3 female) were selected and tested. The results showed that the pre-slaughter weight of the adult male and female Ch... For studying the germplasm charactedsUcs and carcass traits of Changtai yak, 8 adult yaks (5 male, 3 female) were selected and tested. The results showed that the pre-slaughter weight of the adult male and female Changtai yak was 364.32 and 266.83 kg, respectively, which presented extremely significant difference (P〈0.01). The carcass weight, net bone weight net meat weight, and the ratio of bone to meat also showed extremely significant difference (P〈O.01), which were 186.60 and 125.67 kg, 39.74 and 25.00 kg, 147.84 and 100.83 kg, 1:3.73 and 1: 4.03, respectively. The dressing percentage had significant difference which was 51.15% and 49.34%, respectively (P〈0.05). The neat meat percentage and carcass meat production rate showed no significant difference which were 40.54% and 37.66%, 79.29% and 80.24%, respectively (P〉0.05). It indicated that Changtai yak has better growth performance and meat performance potential, and worth of further studying and breeding. 展开更多
关键词 Changtai yak Meat production CARCASS Dressing percentage Neatpercentage
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Estimating the Consumers' Benefits of the Demand for Organic Fresh Milk in Taiwan
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作者 Huang Chin-Huang 《Journal of Modern Accounting and Auditing》 2011年第11期1284-1291,共8页
Certified agricultural standards (CAS) of the organic food label serve to increase food safety and restore the confidence and consumption level in Taiwan. The organic CAS represents food quality without the use of s... Certified agricultural standards (CAS) of the organic food label serve to increase food safety and restore the confidence and consumption level in Taiwan. The organic CAS represents food quality without the use of synthetic chemicals to protect consumers' health. As a consequence, production costs and consumer prices have increased. The aim of this study is to analyze consumers' perception of the organic CAS label and how purchasing behavior for the product is influenced by converting the Fresh Milk Logo to the organic CAS certified label, which is based on contingent behavior analysis. This study adopts factor analysis to extract the perceptions and preferences of the respondents. In addition, the on-site Poisson model to revise the truncated and endogenous stratification and assess consumer welfare precision. The incremental consumer surplus for consumer consumed organic fresh milk is approximately NT$8,979. 展开更多
关键词 food quality organic food contingent behavior consumer surplus
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