英语翻译the estimated requirementsare expressed as a percentage

英语翻译
the estimated requirements
are expressed as a percentage of the lysine.The minimum proportion of
essential to non-essential amino acids they estimated to be at least 45:55.
Speer (1990) gave estimates of 35:65 and 44:56 for gestating and
lactating pigs respectively.40 Nutrition of non-ruminants
Figure 3.3:Amino acids in soya bean meal:comparison with the ideal protein
(Source:* Wang and Fuller,1989; **Tropical Feeds,1994).
The recommended strategy when balancing tropical energy-rich feeds
(such as juice from sugar cane and sugar palm,molasses,cassava root
meal,cassava starch processing by-products,palm oil,oil-pressed fibre
and oil palm fruit),is to prepare a protein supplement which has a
balance of amino acids that resembles as closely as possible that
proposed by Wang and Fuller (1989) (Table 3.1).Where a variety of
protein sources are on offer,a "least cost" computer program can be used
to achieve such a balance.An example of this approach was given by
Speedy et al.(1991) for preparing a protein supplement to balance sugar
cane juice for pig fattening in Swaziland.
For the next step one should ideally be able to refer to regression
equations relating productive function to protein (balanced according to
Wang and Fuller,1989) for the particular energy-rich "tropical" feed
being used.An example of this approach is given in the work reported by
Bui Huy Nhu Phuc et al.(1994) and Ospina et al.(1994),referred to
above (Figure 3.2).Response curves relating growth and carcass traits
with supply of a balanced protein (soya bean meal),were determined for
basal diets of sugar cane juice and cassava root meal,respectively.FromTropical animal feeding:a manual for research workers 41
such data it is possible to calculate the marginal advantage (or
disadvantage) of a particular level of protein input in terms of the
expected increase in productivity that will result,compared with using
a lower level of protein.

估计要求
表达赖氨酸的百分比.最低的比例
必要非必需氨基酸他们估计至少有45:55.
Speer(1990)给的估计,35:65 44:56孕育的
哺乳期的猪respectively.40 non-ruminants的营养成分
图需求大豆氨基酸在吃饭比较理想的蛋白质
(资料来源:*王建民和更充实,1989;* *热带饲料,1994年6月初版.
推荐的战略资源丰富的饲料.平衡热带
(如果汁从甘蔗和糖棕、糖蜜、木薯根
吃完饭,木薯淀粉加工副产品、橄榄油、oil-pressed纤维
和石油棕榈果),是要让一种蛋白质补充有
氨基酸的平衡就像尽可能密切
王建民和更充实了(1989)(表3.1).在各种各样的
提供蛋白质,“最低成本”计算机程序可以使用
为实现这一平衡.这种方法的一个例子是藉
快速孙俐.准备(1991)平衡的一种蛋白补充糖
甘蔗汁在斯瓦兹兰增肥的猪.
在接下来的第一步最好应该可以指回归
生产功能相关的方程式蛋白(平衡的根据
王建民和更充实,1989)为一个特定的资源丰富的《热带“喂
被用.这种方法的一个例子中所提供的工作报告
他Nhu驾车Bui学组.(1994)和Ospina孙俐.指(1994),
以上(图3.2).有关响应曲线增长和骨架特征
与供给的平衡蛋白(大豆确定的一餐)
甘蔗汁基底饮食吃根、甜瓜,分别.FromTropical喂养动物:手动研究人员41
这些数据是可能的边际优势(或计算
某一特定的不足)的蛋白质水平方面的投入
生产力的增长预期,相比之下,也会导致使用
低水平的蛋白质