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| | A series of studies for improving the fertility of broiler breeders was conducted. The data on fertility came from 30 flocks, and approximately 90 000 sets of AA broiler breeders were statistically analysed and simulated by a computer. The emphasis of research was to expound some main factors that affect fertility -breeding period,sex ratio, body weight & constitution , leg & shank conditions, and house temperature. Integrated technical measures to raise the fertility of broiler breeders were worked out and... | | 对AA肉用种鸡受精率及其主要影响因素——种用时期,公母比例,体重、体质和腿脚状况,以及舍温等进行了一系列的分析研究。提出改进肉用种鸡受精率的综合技术措施。在一般生产条件下,肉用种鸡全期平均受精率可达90%以上;在优良生产条件下,肉用种鸡全期平均受精率可达94%以上。 | | 文摘来源 | | Sheep production is one of the main industrics in bashang area of Hebei province.the technical measures of accomplishing the "high production,good quality and high erficiency"sheepkeeping were discussed in this paper. | | 养羊生产是河北坝上地区的主要产业这一.本文就该地区如何实现“高产、优质、高效”养羊业的综合技术措施进行了讨论. | | 文摘来源 | | Abstract Trials were conducted to study the development and use of waste materials ofpoultry (droppings, poultry offals), silage, agricultural by-product, green feed and fodder,then established feed-saving and efficient normal systematic technique of feeding pigs withchicken droppings(CD). We also studied such systematic techniques as plastic hothouse pigin winter and spring, appropriate method of Fe supplement for piglet, formulating | | 本研究采取单因子多水平有重复的试验方法,研究了家禽废弃物(鸡粪、肉鸡屠宰废弃物等)、青贮饲料、农业副产品和青、粗饲料这4大类节粮养猪代用品的开发与利用,建立了鸡粪节粮高效养猪配套技术的模式,探索了与节粮型养猪相配套的冬春季塑料暖棚养猪、适宜的仔猪补铁方式、计算机配制肉猪无鱼粉日粮等综合技术措施。结果表明:分别利用适当比例的畜禽废弃物、青贮饲料、农业副产品和青、粗饲料与基础饲料混合来饲养育肥猪都具有不同程度的节粮高效(经济效益高、生产性能好)的效果,但这些养猪节粮代用品都应以适当的前处理和严格掌握配合的比例为利用的前提;同时,在肉猪饲养过程中,辅以暖棚饲养技术(冬春季)、仔猪补铁技术(对3日龄仔猪一次性肌注牲血素)、无鱼粉日粮的应用技术等都充分显示出节粮高效的效果。研究成果经初步推广,业已取得较大的社会经济效益和良好的生态效益。 | | 文摘来源 | |   | | << 更多相关文摘 |
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