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- Signed in as: ARIA Q Review/ ABC Look at figure 1 in the passage. Which of the following relationships is BEST shown by the data? The more massive the penguin, the more food is delivered to the offspring. The maximum efficiency in food foraging is reached at about 20% sea ice concentration. The amount of food delivered is about the same at 12% and 15% sea ice concentration. The greater the sea ice concentration, the greater the efficiency in delivering food.Old People e = 100 calories λ = 10 per night h = 2 hours Middle Aged People e = 400 calories λ = 20 per night h = 5 hours Young Adults e = 300 calories λ = 10 per night h = 2.5 hours Suppose that the organism need 1000 calories per night. - Which food item should the organism prefer, and which ones would you expect them to eat on a regular basis? Explain why and show calculations. - Explain marginal value theorem, and how it might relate to an organisms foraging decisions. - λ for Old People should increase in the coming years. How could that affect this organisms feeding on humans?A bird eats sunflower seeds from a bird feeder on a snowy day. Of the 1000 J of energy that was in the consumed seeds, the bird stored 10 J of energy in its body, eliminated 150 J of energy in its waste, and used the remaining energy to respire. What is the production efficiency of this bird? Useful equation: PE = Pn/An x 100
- If surface area (SA) to volume (V) ratio increases Question 1 options: There is less SA per unit V; nutrient uptake will be less efficient There is more SA per unit V; nutrient uptake will be more efficient There is more SA per unit V; nutrient uptake will be less efficient None of these There is more V per unit SA; nutrient uptake will be more efficientOptional Exercise Barn Owls produce 2 pellets per day. Assume each pellet contains 80g of biomass. Also assume that one 40g vole can cause 50 cents of crop damage to a farm per season. If a Barn Owl family of seven (2 adults and 5 young) lives on a farm for 12 weeks and feeds entirely on voles, how much will the farmer save in crop damages?is self-propelled, it forms the nucleus of the tractor. This seúrce of power will be discussed in greater detail in subsequent chapters. Questions 1. What are the major sources of power available on a farm? 2. What is the significance of human power? Can it be eliminated completely by the use of other farm power sources? 3. List the advantages and limitations of using animal power. What is the pulling capacity of: a) a donkey; b) an ox? 4. List the factors that influence the output available from an animal. Discuss each factor. 5. Which machines can be operated by: a) wind power; b) water power? 6. What are the advantages of solar power? Give examples of the use of solar power on the farm. 7. List the farm operations (stationary and mobile) for which electricity can be used. Illustrate with examples.
- Discuss the differences between GE (Gross energy), ME (Metabolizable energy), and DE (Digestible Energy). Among the three values, which one is the most accurate estimate of energy value of a feedstuff and why?Question:- How do the metabolic pathways of different cells allow them to cycle nutrients?Question :- Describe a 3 phase feeding program in weaners in pigs as well as the raw material inclusion. use examples of feed ingredients in each phase
- Discuss the concept of apparent free space. What role does apparent free space play in the uptake of nutrient ions?Nutrients (such as N, P. K) are important for the increase in net primary production which will be used by the consumers for growth and reproduction. In an aquaculture pond, why is it disadvantageous to exceed the saturation levels of fish feed (proteins, lipids, carbohydrates, vitamins) for the growth of aquaculture fishes. What are effects of this activity in the aquatic environment and organisms. Discuss in light of the lecture made earlier about productivity and nutrient cycling?Identify whether the feed ingredients from the row are ENERGY or PROTEIN source (choose correct answer, its either energy or protein source)
