神马作文网英语翻译MINERALS AND VITAMINS In this case the indicator of sust
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英语翻译
MINERALS AND VITAMINS
In this case the indicator of sustainability is "minimum" dependence on
outside inputs,especially those sold by feed mills and other
intermediaries.Careful selection of the supplement can help to eliminate
part of the need for both minerals and vitamins.For example if some
palatable and digestible green foliage can be given free choice the pigs
will obtain from it most of the vitamins (except for D which is
abundantly provided through the medium of sunlight) and trace minerals
they need.The major minerals provided by the commonly used protein
supplements are shown in Table 3.3.When a mixture of soya bean meal
and fish meal (75:25) is used as the protein
source it will provide much
of the needed calcium,phosphorus and sodium.Sources of calcium
(lime) and sodium (salt) are available in most farm households and rural46 Nutrition of non-ruminants
villages.In some cases the phosphorus can be supplied as phosphate
fertilizer.Useful data on vitamin and mineral content of tropical feed
resources can be found in Tropical Feeds (1994).
MINERALS AND VITAMINS
In this case the indicator of sustainability is "minimum" dependence on
outside inputs,especially those sold by feed mills and other
intermediaries.Careful selection of the supplement can help to eliminate
part of the need for both minerals and vitamins.For example if some
palatable and digestible green foliage can be given free choice the pigs
will obtain from it most of the vitamins (except for D which is
abundantly provided through the medium of sunlight) and trace minerals
they need.The major minerals provided by the commonly used protein
supplements are shown in Table 3.3.When a mixture of soya bean meal
and fish meal (75:25) is used as the protein
source it will provide much
of the needed calcium,phosphorus and sodium.Sources of calcium
(lime) and sodium (salt) are available in most farm households and rural46 Nutrition of non-ruminants
villages.In some cases the phosphorus can be supplied as phosphate
fertilizer.Useful data on vitamin and mineral content of tropical feed
resources can be found in Tropical Feeds (1994).
矿物质和维生素在这种情况下,可持续发展的指标是“最低”对外部投入的依赖,特别是那些出售的饲料加工厂和其他中介机构. 仔细选择的补充可以帮助消除双方的矿物质和维生素的部分需要. 例如,如果一些可口和易消化的绿叶能给予自由选择的猪会从中获得大部分的维生素（除D这是通过大量的阳光中提供）和微量矿物质他们的需要. 常用的蛋白质补充提供的主要矿物见表3.3. 当大豆豆粕和鱼粉（75:25）的混合体为蛋白源的使用能够提供所需的钙,磷,钠多. 钙（石灰）和钠（盐）的源代码可以在大部分农户和rural46非反刍动物营养的村庄. 在某些情况下,磷,可提供作为磷肥. 维生素和矿物质的热带饲料资源的内容有用的数据中可以找到（1994）热带源.