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人工鸽乳饲养乳鸽的效果研究 被引量:6
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作者 顾拥建 陈启康 +4 位作者 梁志彬 沙文锋 吴红 张宏泽 陈华 《南京农专学报》 2003年第3期49-51,共3页
利用人工鸽乳进行12日龄后乳鸽饲养试验。将三种配方的人工鸽乳粉代谢能(ME)恒定为12 6MJ·kg-1,粗蛋白(CP)含量分别为15%、18%、21%;选取64只12日龄乳鸽分4组进行试验,3个试验组分别饲喂3种配方的人工鸽乳,对照组仍采用自然育雏。... 利用人工鸽乳进行12日龄后乳鸽饲养试验。将三种配方的人工鸽乳粉代谢能(ME)恒定为12 6MJ·kg-1,粗蛋白(CP)含量分别为15%、18%、21%;选取64只12日龄乳鸽分4组进行试验,3个试验组分别饲喂3种配方的人工鸽乳,对照组仍采用自然育雏。至28日龄称重比较。结果表明,各试验组乳鸽分别较对照组增重8 79%、16 87%、17 01%,以粗蛋白含量为21%的人工鸽乳粉增重效果最显著,但以粗蛋白含量为18%的人工鸽乳粉性能价格比最经济。通过测定表明人工育雏可以使乳鸽提早3~5d上市销售,并能提高整齐度和商业价值,同时可缩短种鸽产蛋周期6d。 展开更多
关键词 人工鸽乳 乳鸽 养管理 供饲饲料 产蛋周期
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Assessment of Feed Supply and Demand for Livestock in Pakistan
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作者 Ghulam Habib Muhammad Fatah Ullah Khan +1 位作者 Shahbaz Javaid Muhammad Saleem 《Journal of Agricultural Science and Technology(A)》 2016年第3期191-202,共12页
Country level assessment of feed supply and demand for livestock in Pakistan was conducted for the year 2013. Availability of feed ingredients was calculated from the official crop production statistics using publishe... Country level assessment of feed supply and demand for livestock in Pakistan was conducted for the year 2013. Availability of feed ingredients was calculated from the official crop production statistics using published harvest index and extraction ratios, and their nutrient supply was estimated from local feed composition tables. Feed requirements of livestock species were calculated from the standard tables published by US National Research Council. The results showed that indigenous feed resources were short for livestock and poultry requirements. The supply and demand gap for dry biomass, crude protein (CP) and metabolizable energy (ME) were 19.4%, 37.2% and 38.0%, respectively. Crop residues were the predominant source comprising 58.8% of the total feed supply, while fodder and grazing shared 23.8% and 9.2%, respectively. Grains and by-products contributed 8.2% to the feed supply. In attempt to fill this gap, large quantities of oilseed meals were imported mainly for the poultry sector. Maize was the major feed grain used in poultry and ruminant rations, and they together consumed 79% of the country's total maize produce. Based on the anticipated rapid expansion in poultry, dairy and feedlot farming in Pakistan, the feed gap will further enlarge and this warrants future focus on efficient and intensive utilization of the local conventional and nonconventional feed resources. The data and information presented in this paper provided a sound basis for regular updating in future to attain sustainable growth of livestock sector in the country. 展开更多
关键词 Livestock feed resource feed inventory feed demand feed adequacy Pakistan.
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