Sheep farming

Sheep farming Sheep farming or sheep husbandry is the raising and breeding of domestic sheep. It is a branch of an Most lambs are born outdoors.

Ewes can be made to give birth in fall, winter, or spring months, either by artificial insemination or by facilitating natural mating.[5] Fall lambing is generally not done as the lamb crop percentage is likely to be low; ewes often need hormone therapy to induce estrus and ovulation, and farm labor is often busy elsewhere during fall lambing. Furthermore, fall-born lambs can be weak and small bec

ause of heat stress during the summer gestation period. Spring lambing has the advantage of coinciding with the natural breeding and lambing seasons, but supplemental feed is often needed. The advantage of winter lambing is that the lambs are weaned in spring when pastures are most fertile. This allows the lambs to grow more quickly, and to be sold for slaughter during the summer (when prices are generally high), but it results in roughly one in every four newborn lambs dying within a few days of birth due to malnutrition, disease, or exposure to the harsh cold. In the UK, it results in around 4 million newborn lamb deaths.[6] 'Accelerated lambing' is the practice of lambing more than once a year, typically every 6 to 8 months. The advantages of accelerated lambing include increased lamb production, having lambs available for slaughter at different seasons, year-round use of labor and facilities, and increased income per ewe. It requires intensive management, early weaning, exogenous hormones, and artificial impregnation. It is often used to make old or soon-to-be infertile ewes give birth one more time before they are slaughtered.[5]

Lamb marking
Main article: Lamb marking
After lambs are several weeks old, lamb marking is carried out.[7] This involves ear tagging, docking, mulesing, and castrating. Ear tags with numbers are attached, or ear marks are applied, for ease of later identification of sheep. Tail docking is commonly done for welfare, having been shown to reduce risk of flystrike when compared to the alternative of letting sheep collect waste around their buttocks.[8] The Merino breed, accounting for around 80% of the wool produced in Australia, have been selectively bred to have wrinkled skin resulting in excessive amounts of wool while making them much more prone to flystrike.[9][10][11] To reduce the risk of flystrike caused by soiling for the lambs who make it to summer, Merino lambs are often mulesed at the same time, which involves cutting off the skin around their buttocks and the base of their tail with metal shears. If the lambs are younger than 6 months, it is legal to do this in Australia without any pain relief.[12] Male lambs are typically castrated. Castration is performed on ram lambs not intended for breeding, although some shepherds choose to omit this for ethical, economic or practical reasons.[7] A common castration technique is 'elastration,' which involves a thick rubber band being placed around the base of the infant's sc***um, obstructing the blood supply and causing atrophy. This method causes severe pain to the lambs who are provided no pain relief during the process.[13] Elastration is also commonly used for docking. Though no laws mandate this practice, depending on the preference of the shepherd, docking and castration are commonly done after 24 hours (to avoid interference with maternal bonding and consumption of colostrum) and are often done not later than one week after birth to minimize pain, stress, recovery time, and complications.[14][15] Ram lambs that will either be slaughtered or separated from ewes before sexual maturity are not usually castrated.[16] Objections to all these procedures have been raised by animal rights groups, but farmers defend them by saying they save money, and inflict only temporary pain.[

29/07/2022

There are many types of extensive sheep production systems in the world, but some shared characteristics of extensive systems are that they rely mainly on pasture feeding as animals are managed outdoors all year round, or at least for most of their lives, with limited monitoring and human intervention [1]. These are typical production systems in the UK and the southern hemisphere, including Australia, New Zealand, South Africa, Argentina, Chile and Uruguay [1]. ..... There are many types of extensive sheep production systems in the world, but some shared characteristics of extensive systems are that they rely mainly on pasture feeding as animals are managed outdoors all year round, or at least for most of their lives, with limited monitoring and human intervention . These are typical production systems in the UK and the southern hemisphere, including Australia, New Zealand, South Africa, Argentina, Chile and Uruguay [1]. Extensive sheep farming systems create opportunities for sheep to live a 'natural life'

29/07/2022

Electric fencing is implemented in sheep production to intensify grazing management systems, such as subpaddock grazing, cell-grazing and techno-grazing (an intensive grazing system that uses paddock subdivision; Morris 2009Morris , 2017. The ability to create subpaddocks by using temporary fencing is particularly of use in mixed farming systems, although electric fencing is often not used because of cost and labour requirements (Bell et al. 2014;Llewellyn et al. 2017). ..... The implementation of virtual fencing in intensive grazing systems can address the high costs associated with the labour of erecting and moving temporary barriers such as electric fencing. Intensive grazing management of sheep is often implemented as part of mixed cropping systems (Francia et al. 2006;Morris 2017), as it allows producers to diversify income (Llewellyn et al. 2017), improve productivity (Bell et al. 2014), control weeds (Nie et al. 2016) and improve pasture utilisation. When rotation is included in intensive grazing systems, there are also additional benefits for the livestock, such as improvement in gastrointestinal parasite control (Colvin et al. 2008) and mitigation of methane emissions

29/07/2022

There are an estimated 1000 million sheep in the world. The major sheep farming areas are located within the latitudes 35-55 degree north in Europe and Asia and between 30 and 45 degree south in South America, Australia and New Zealand. The current world consumption of sheep meat stands at about 2.5 kg per person annually out of an annual meat consumption of 41.6 kg per person. There are three major management systems for sheep production that exist in the world, namely extensive production for wool and meat, intensive dairy production and traditional pastoralism. Generally, the different farming systems have the capacity to provide good welfare outcomes for the animals, provided adequate resources and husbandry (e.g. supplementary feed, labour veterinary care) are given when required.The main risk to traditional pastoralism systems is the unpredictability of the climate. This has an impact on the growing season of plants and hence the forage that is available to sheep. The risks are particularly acute mid-winter when sheep are in their poorest condition. High losses of newborn lambs can be especially damaging as it limits the supply of new females to enable flock rebuilding. With extensive systems a major issue is financial pressures on farm labour and the trend over recent times has been towards a higher sheep:stockperson ratio. Overall, the welfare risks are potentially higher in these lower input systems. There remain some specific welfare issues in some countries for example in some Australian sheep production systems surgical husbandry practices such as mulesing and long-distance land transport and live animal sea transport can create welfare issues The major issue with in dairy sheep systems is the early weaning of lambs. The practice of removing lambs from dairy sheep and artificially rearing them can be stressful for both dams and offspring and can lead to reduced lamb growth rates.The need for flexibility in modern and traditional sheep systems is undeniable as the climate variation within and between seasons on pasture supply will be exaggerated if climate change continues at predicted rates. Sheep systems will need to be designed to cope with these greater fluctuations by building flexibility.

20/07/2022

Why do you want to raise sheep?
There are many reasons to raise sheep. The reasons are important, as they will have a significant impact on the breed(s) that are raised and the manner in which the sheep are fed, managed, and marketed.
Economic
Traditionally, sheep have been raised on farms and ranches for the purpose of generating an income for the farm and family. While some farms make a majority of their income from raising sheep, sheep production is more often a secondary or tertiary enterprise on a farm. In fact, sheep-raising compliments many other agricultural enterprises. It is a popular enterprise for many part-time and lifestyle farmers. Sheep production is a good activity for youth and retirees.
There can be numerous tax advantages to raising sheep or engaging in similar agricultural activities. Some people raise sheep for the primary purpose of having their properly taxed at (lower) agricultural rates. The legal definition of a farm (for real estate tax purposes) varies by state and country.
While all agricultural enterprises are expected to eventually generate a profit and pay taxes, many people raise sheep (and other livestock) as a "tax write-off." Farm expenditures, including capital purchases, can be written off against ordinary income. Most sheep-related purchases are exempt from sales tax.
Environmental
Some people keep sheep to improve and/or maintain their landscapes. Due to their small size, upland grazing preferences, and preference for many weeds, sheep are ideal for vegetation control, especially where the primary vegetation is grass and forbs. Their small hooves minimize soil compaction and erosion. They shy away from fragile riparian areas.
In fact, opportunities for fee-based grazing by sheep (and goats) are expanding as society seeks more environmentally-friendly ways to control invasive weeds and other unwanted vegetation. But even when they're not being used to clean up a landscape, sheep (and other livestock) help to keep land in open space and preserve rural landscapes

20/07/2022

What is supplementary feeding?
Supplementary feeding is the supply of additional feed (usually grain, hay or silage) to sheep grazing a pasture or stubble that is lacking in energy or protein. In Western Australia later in summer and autumn, supplementary feeding often becomes substitution feeding where sheep choose to eat the added feed rather than that available in the paddock.
Where pasture or stubble ground cover is less than 50%, where wind erosion is likely, we recommend feeding in stable confined areas or in feedlots. In this case, the 'supplementary' feed becomes the full ration.
Supplementary feeding aims to meet the nutritional requirements of different classes of sheep. It is especially important to prevent excessive liveweight loss during the dry pasture phase in weaners and pregnant ewes.
If you are growing sheep for meat production, seek professional advice regarding ration quality and the energy-to-protein ratios in the supplement. See the sheep feed value guide for more information on nutrient values of different feedstuffs.
Why supplementary feed?
Sheep are commonly supplementary fed during late summer, autumn and early winter to:
reduce grazing pressure on pastures that are near to minimum groundcover levels for erosion control
improve utilisation of existing dry pasture where dry pasture is nonlimiting
meet the sheep's energy and protein requirements
improve production of meat or wool to achieve targets
reduce the grazing pressure on establishing pastures to ensure that pasture growth rates are optimised in winter.
Improving utilisation of dry pasture
Improve utilisation of dry pasture or stubble – which is low in protein and high in fibre – by supplementary feeding with 20–50 grams per head per day of a supplement high in protein, such as lupins.
For this to work:
the amount of dry pasture should be nonlimiting, at least of 1500 kilograms of dry matter per hectare (kgDM/ha) of feed on offer (FOO)
digestibility needs to be at least 50 to 55%.
Where this will not work:
Providing high rates of feed (more than 100 grams per head per day) will lead to substitution, where the sheep choose the supplementary feed over pasture, leading to reduced pasture utilisation.
When pasture digestibility falls to less than 50%, energy becomes limiting for maintenance for all classes of sheep, and feeding protein will not aid further utilisation of dry pasture. Use high-energy supplements to maintain sheep once pasture digestibility and quantity have fallen below 50% and 1500 kgDM/ha FOO, respectively.
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Meeting sheep requirements and feed budgeting
The general rules for feed budgeting at any time of the year are:
calculate the projected feed requirements for a given period
estimate the projected feed availability for that period
if feed availability is less than feed requirements, determine how much supplementary feed is needed.
Watch the video below for an introduction to all aspects of feed budgeting. We recommend watching the video in YouTube to see the tables.

20/07/2022

The poultry industry creates animal waste from excreta/manure together with waste from poultry and egg processing. These represent a series of environmental problems together with a loss from no producing potential co-products instead of waste products. The topics covered attempt to reveal some of the possibilities available for non-food uses of poultry waste, while at the same time reducing the acute environmental problems. This chapter presents methods for treating and storing poultry waste: stacking method (depot), drying of manure, and ensiling chicken manure. There is scope to use poultry waste to produce value-added products such as fertilizer, biodiesel, animal feed, electricity, biogas, bone powder, and biodegradable plastics. Poultry bones, skin and, feet can be processed to poultry and/or bone meal or can considered as poultry waste. Poultry feet (duck and chicken) are another potential source of gelatin production from poultry waste.

20/07/2022

Poultry by-product meal is one of the most important source of animal protein used to feed domestic animals, along with meat and bone meal, blood meal, feather meal and fish meal (Meeker et al., 2006). It is made by combining the by-products coming from poultry slaughterhouses or poultry processing plants. The AAFCO (USA) defines poultry by-product meal as the ground, rendered, clean parts of the carcass of slaughtered poultry such as necks, heads, feet, undeveloped eggs, gizzards and intestines (provided their content is removed), exclusive of feathers (except in such amounts as might occur unavoidably in good processing practices) (AAFCO cited by Watson, 2006). Whole poultry carcass meal can also be obtained from culled laying hens (spent hen meal), notably in areas where there is no market for culled hens (Kersey et al., 1997; Hertrampf et al., 2000).
The nutrient content of poultry by-product meal can be quite variable and depends on the substrate that is being processed (Watson, 2006; Dale et al., 1993). It is generally a palatable and high-quality feed ingredient due to its content in essential amino acids, fatty acids, vitamins and minerals. In addition to its use in livestock, it is in high demand from the pet food and aquaculture industries (Meeker et al., 2006).
Poultry by-product meal is golden to medium brown in colour with a fresh poultry odour (Hertrampf et al., 2000).
Distribution
Worldwide, more than 55.5 billion broilers were slaughtered in 2009 and yielded about 16.5% offals. Assuming an average weight at slaughter of 1.8 kg, it may be inferred that each broiler gives 0.3 kg offal (Hertrampf et al., 2000). The total production of broiler offal can then be estimated at about 17 million tons/year. This estimation does not take spent laying hens into account (FAO, 2011; Hertrampf et al., 2000).
The use of poultry by-product meal for livestock feeding was banned in 2002 in the European Union (Regulation (EC) No 1774/2002) (European Community, 2002).
Processes
Processing poultry offals into poultry by-product meal requires several steps. Poultry offals are primarily collected in containers where they can be stabilized through fermentation with molasses or brewer's grain. This operation reduces pH and stops bacterial and viral development (Cai et al., 1994). Stabilization may also be achieved with acid or basic treatments. Mineral acids such as sulfuric or phosphoric acids are effective in preserving poultry wastes. Organic acids are also potential preservative treatments. Among chemical bases, NaOH treatment is also a potential preservative (Blake, 2000). The traditional way of processing offals used to be wet-rendering (cooking under steam pressure) but it was replaced by dry-rendering, which resulted in meals of higher quality (Allbright, 1931). The stabilized (or not) poultry offal is cooked/sterilized and dried down to 8% moisture. When the resulting meal appears to be too fat (above 16% fat), rancidity problems may occur during storage. Fat extraction is therefore recommended and yields a 10-12% fat content poultry by-product meal (El Boushy et al., 2000). The overall process is described in the figure above.
High-fat whole poultry meal can also be obtained by alkaline hydroxide treatment of whole poultry carcasses followed by freeze-drying (lyophilisation). Freeze-drying is an interesting way of stabilizing poultry carcasses before transformation into meal in places where odours are not tolerated by the neighbourhood. The resulting meal was found to be free of pathogens. It has a higher fat content and a lower crude protein than poultry by-product meal (Shafer et al., 2001; Gillies, 1979). Whole poultry meal (spent hen meal) can also be obtained by classical rendering (Kersey et al., 1997).
Environmental impact
Processing poultry by-products into feed is a good way to mitigate the environmental problems caused by poultry processing. If not properly managed poultry offals released in the environment are vectors for insects, vermin, bacteria and viruses, which may result in water contamination (leaching of nutrients and pathogenic microorganisms) and air pollution (noxious gases and nuisance odorants) (FAO, 2011).

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