Evolution of Nutrition | Animal nutrition | Growth, maintenance and energy production

Evolution of Nutrition | Animal nutrition | Growth, maintenance and energy production

Hi friends my name is " Hadi Rana", today we'll discuss about (Evolution of Nutrition | Animal nutrition | Growth, maintenance and energy production).

Nutrition

Nutrients in the food an animal consumes provide the necessary chemicals for growth, maintenance, and energy production. Over all the nutritional requirements of an animal are related to its ability to synthesize molecules essential for life. The fewer such biosynthetic abilities an animal has, the more kinds of nutrients it must obtain from its environment. Green plants and photosynthetic protists  have the fewest such nutritional requirements, because they can synthesize all their own complex molecules from simple inorganic substances; they are autotroph.

                         Click on pic to buy

       Animal, fungi and bacteria that cannot synthesize many of their inorganic molecules and must obtain them by consuming other organisms or their product are heterotrophs. Animals, such as rabbits, are animals that eat only meat. Omnivores, such as humans, bears, raccoons and pigs, eat both plant and animal matter. Insectivores, eat primarily arthropods.

                         Click on pic to buy

         Losses of biosynthetic abilities have marked much of animal evolution. once an animal routinely obtains essential; complex organic molecules in its diet, it can afford to lose the ability to synthesize those molecules. Moreover, the loss of this ability confers a selective advantage on the animal because the animal stops expending energy and resources molecules that are already in its diet. Thus, as the diet of animals become more varied, they tended to lose their abilities to synthesize such widely available molecules as some of the amino acids.

 

         Thanks for reading, hope you would like, please follow me in the top right corner.