Crossbreeding effects of angus on native yellow cattle 安格斯種牛雜交改良本地黃牛效果
The german cattle population is provided with outstanding health status documented by reliable certificates 德國(guó)種牛群的健康狀況都有最可靠的文體記錄證書(shū)。
The project will assist the development of a number of beef production model systems that are integrated from seedstock producer to processor and consumer 此項(xiàng)目將幫助很多將種牛生產(chǎn)者肉牛加工者和消費(fèi)者融為一體的肉牛生產(chǎn)模式系統(tǒng)的發(fā)展。
According to the report of u . n . food and agriculture organization , 16 percent of all 7 , 600 known breeds of cattle , pigs , sheep , chickens , ducks and other farm animal species are at risk 根據(jù)聯(lián)合國(guó)糧食及農(nóng)業(yè)組織的報(bào)告,在已知現(xiàn)有7 , 600種牛、豬、羊、雞、鴨和其他農(nóng)場(chǎng)畜種中,有16 %瀕臨危險(xiǎn)。
In the second chapter , we used the two deformed newton which was discussed in the chapter 1 to solve the problem of finding the roots of nondifferentiable equations and established convergence theorems using majorant method 在第二章中,用第一章討論過(guò)的兩種牛頓迭代來(lái)解決不可導(dǎo)方程的求根問(wèn)題。并且用優(yōu)序列方法給出了收斂性定理。