stocking rate and carrying capacity pdf

The grazing capacity of an area is influenced mostly by availability of water for grass growth and the condition of the herbaceous layer. Stocking rate or Carrying Capacity The number of cattle carried in a paddock or on a property - usually expressed as the number of cattle or breeding units per hectare. The long-term carrying capacity of rangeland refers to the average stocking rate a given amount of land can support for several years without damage to that resource. The central, east, southwest, northeast, and south-central regions were above their carrying capacity while the Panhandle, Sandhills, and North Central regions were below their carrying capacity (Table 1). i.e. Carrying capacity is essentially the stocking rate that is considered sustainable in the long-term (5–10 years) and relates to the number of livestock that may be maintained on an area of land on an ongoing basis. Carrying capacity refers to the forage-produc- ing capacity of various pastures. In this article I give my views and understanding of Carrying Capacity and Stocking Rate. Increase in fish growth and carrying capacity Limitation on feeding and increasing stocking density Poor water quality Concomitant fertilization might helped maintain reasonable water quality ¾Stocking density. Carrying capacity is the stocking rate that achieves a targeted level of animal or economic performance over a defined period of time with-out causing deterioration of the pasture ecosys-tem. of dry forage Animal unit month AUM 780 lbs. Stocking rate & carrying capacity . Carrying Capacity with Sheep How many sheep can you raise per acre? Carrying capacity and stocking rate. can also be used to determine initial stocking rates. Improved Utilization of Pond Carrying Capacity by Increasing Initial Stocking Rates and Subsequent Stock Division 1. A critical factor to evaluate is how well the stocking rate agrees with the carrying capacity of the land. Carrying capacity in terms of the animal unit (AU) concept. Another way of calculating the current stocking Carrying capacity is a measure of grass or forage available. The calculated carrying capacity (CC) value for the district ranges between 0 and 1 TLU ha −1 year −1 (1–21.7 ha TLU −1 year −1) with average value of 0.3 TLU ha −1 year −1 (4.9 ha TLU −1 year −1); while, the existing stocking rate has become 5.4 TLU ha −1 year −1 (0.18 ha TLU −1 year −1). Therefore this level of stocking will not greatly harm land condition; it is a risk-adverse approach to managing stocking rates. CARRYING CAPACITY AND STOCKING RATE CENTRAL ORGANIZING IDEA: The number and kinds of organisms that a system will support is complex. The paddock is carrying 10 x 60 = 600kg/(2 hectares) which equates to 300 kg per ha and divide by 50 (DSE value) giving you 6 DSE per hectare. Concept Abbreviation Definition Animal unit AU 1,000 lb. Carrying capacity, tourism Carrying capacity is a concept that has been widely applied in tourism and recreation studies since the 1960s, although some authors trace its emergence to as far back as 1930. It is often couched in the context of issues like, biodiversity, large mammal populations and human populations. Fact Sheet 788 Understanding Pasture Stocking Rate and Carrying For example, a herd of 30 cows on a 20-acre rotational grazing paddock has a stocking density of 1.5 animal units per acre, even though the stocking rate for the 160 acre pasture remains at 0.75 AUMs/ acre. Page 1 Carrying Capacity Factsheet CALCULATING THE CURRENT STOCKING RATE EXAMPLE. Stocking rate, defined as, the number of animals allotted to an area for a given length of time is one of the most important grazing management tools a rancher or land manager can manipulate, regardless of the grazing system, vegetation type or kind and class of livestock. For sustainable pastoralism, stocking rate must be less than the seasonal carrying capacity of the pasture. Stocking rate is generally expressed as animal units per unit of land area. Corresponding Author. carrying capacity of grazing animals on rangelands. Resources for Calculating Stocking Rate and Carrying Capacity. So let’s examine on what factors it depends. 1 AU / 15 Acres How many cows will your land support in Texas? Estimates of this average stocking rate can be obtained by conducting range condition surveys (McGinty and White, 1991). Thus, carrying capacity is set by mother nature, through soil and climate characteristics; stocking rate is set by humans, through livestock or wildlife management. Carrying capacity is the stocking rate that achieves a targeted level of animal or economic performance over a defined period of time with- out causing deterioration of the pasture ecosys- tem. The AUM provides us with the approximate amount of forage a 1000 lb cow with calf will eat in one month. They are actually two very different measures of how things are at a point in time. Both involve matching pasture supply to cattle feed intake requirements. Spektrum consulting was commissioned to complete this review. Thomas E. Schwedler. stocking rate As long term carrying capacity is looking for the average number of animals for a long time period it needs to take into account that there will be poor pasture growth years. 10 dry sheep @ 60 kg each in a 2 hectare paddock. capacity (or grazing capacity) of the land. When matching grazing pressure and carrying capacity, the goal is to devise a management system that will optimize animal and forage production over the long-term, rather than attempting to maximize either factor by itself. Jeffery S. Terhune. CARRYING CAPACITY REVIEW Spektrum Review PCC 2018 ABSTRACT This report was commissioned by Landgate to reassess the Potential Carrying Capacity of the majority of the leases in the Kimberley, Pilbara and Southern Rangelands. Stocking rate is how many animal units (AUs) of livestock are grazing or using the land in a certain period. View Essay - Understanding-Pasture-Stocking-Rate-and-Carrying-Capacity.pdf from ECONOMICS 238 at Harvard University. Stocking rate is how things are, good, bad or ugly. QUICK DEFINITION: Stocking Rate is defined as the amount of land allocated to each animal for the grazable period of the year. A sustainable stocking rate is one which does not degrade the natural resources or permanently reduce pasture productivity as a result of overgrazing, species loss and weed growth. the stocking rate agrees with the carrying capacity of the land. There are two main types of carrying capacity—long-term carrying capacity or short-term carrying capacity, otherwise known as forage or dry season pasture budgeting. A major driver of natural resource condition trend is the level of total grazing pressure over time. Department of Aquaculture, Fisheries, and Wildlife, Clemson University, Clemson, South Carolina 29634 USA . Table 1. OBJECTIVE To determine the upper limits to Nile tilapia production utilizing supplemental feeds. In adaptive management, trends in vegetation change are used to adjust the stocking rate of an area according to the management objectives of that area. This report provides the updated potential carrying capacities, methodology used to calculate these and … It takes into account the mix of land types, their condition, the climate and animal production and land condition objectives. This AUM was established to be 800 lbs of forage on a dry weight basis (not green weight). Stocking rate is a management decision of how many cattle to put on the pasture. Carrying capacity is the stocking rate that is sustainable over time per unit of land area. Some of these regional differences can be explained by animal movements during the production year. In particular how they’re closely related to each other and the importance of considering rainfall when… This stocking strategy is based on an assessment of expected market conditions and rangeland capacity for sustainable livestock production, often referred to as grazing capacity or carrying capacity. Stocking rate is the number of animals a land manager places or maintains on a piece of land over a specified period of time. O ne very frequent question I encounter is the question of stocking rate: “How many sheep can I raise per acre?” My answer always is: “It depends.” That answer would make for a very short article. Stocking rate can be calculated from the number and type of grazing animals, and there should be an allowance for native and feral herbivores. Stocking rate refers to the actual number of animals grazed, which may not match forage production. To use the resources below, you will need to know the number and type of livestock you plan to graze, for how long, and the approximate amount of forage you have available. Well the stocking rate agrees with the carrying capacity of the herbaceous layer calf when they the... On rangeland in conversation by a lot of people decision of how many sheep can you per. Must be less than the seasonal carrying capacity refers to the forage-produc-ing capacity of area... Clemson, South Carolina 29634 USA page 1 carrying capacity, South Carolina 29634 USA of are! By Increasing initial stocking rates of time Acres how many cattle to put on the pasture and the condition the! 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