Tuesday 24 February 2009

FORAGE

Forage


( http://en.wikipedia.org/wiki/Forage )
From Wikipedia, the free encyclopedia



Forage is plant material (mainly plant leaves and stems) eaten by grazing livestock.[1] Historically the term forage has meant only plants eaten by the animals directly as pasture, crop residue, or immature cereal crops, but it is also used more loosely to include similar plants cut for fodder and carried to the animals, especially as hay or silage.[2]






Common forages

Grasses
Brachiaria decumbens
Brachiara humidicola
Bothriochloa pertusa
Bothrioochloa bladhii
Heteropogon contortus
Themeda triandra
Panicum maximum
Cenchrus ciliaris
Melinis minutiflora
Setaria sphacelata
Chloris guyana
Cynodon dactylon
Paspalum dilatatum
Hyparrhenia rufa
Echinochloa pyrmaidalis
Leersia hexandra
Hymenachne amplexicaulis
Entolasia imbricata
Intermediate wheatgrass (Thinopyrum intermedium)
Bluegrasses or meadow-grasses (Poa species)
Kentucky bluegrass or smooth meadow-grass (Poa pratensis)
Rough meadow-grass (Poa trivialis)
Texas bluegrass (Poa arachnifera)
Bromegrass or brome (Bromus species)
False oat-grass (Arrhenatherum elatius)
Fescues (Festuca species):
Red fescue (Festuca rubra)
Meadow fescue (Festuca pratensis)
Tall fescue (Festuca arundinacea)
Orchard grass or cock's-foot (Dactylis glomerata)
Reed canary-grass (Phalaris arundinacea)
Ryegrasses (Lolium species):
Annual or Italian ryegrass (Lolium multiflorum)
Perennial ryegrass (Lolium perenne)
Timothy-grass or timothy (Phleum pratense)



Herbaceous Legumes
Stylosanthes sacbea
Stylosanthes humilis
Chamaecrista rotundifolia
Macroptilium atropurpeum
Macroptilium bracteatum
Medicago truncatula
Glycine wightii
Clitoria ternatea
Arachis pintoi
Vigna parkeri
Alfalfa or lucerne (Medicago sativa)
Bird's-foot trefoil (Lotus corniculatus)
Clovers (Trifolium species):
Alsike clover (Trifolium hybridum)
Crimson clover (Trifolium incarnatum)
Red clover (Trifolium pratense)
White clover (Trifolium repens)
Sainfoin (Onobrychis viciifolia)
Sweetclover or melilot (Melilotus species)
Vetches (Vicia species)
Common vetch or tare (Vicia sativa)
Hairy vetch (Vicia villosa)
Bitter vetch (Vicia ervilia)
Vicia articulata Hornem
Vicia narbonensis

Tree Legumes
Leucaena leucocephala
Albizia lebbeck
Acacia aneura

Silage
Corn (maize)
Alfalfa
Grass-legume mix
Sorghums
Oats


Crop residue
Sorghum
Corn (maize) stover
Soybean stover


Foraging
( http://en.wikipedia.org/wiki/Foraging )
From Wikipedia, the free encyclopedia

Foraging theory is a branch of behavioral ecology that studies the foraging behavior of animals in response to the environment in which the animal lives. Foraging theory considers the foraging behavior of animals in reference to the payoff that an animal obtains from different foraging options. Foraging theory predicts that the foraging options that deliver the highest payoff should be favored by foraging animals because it will have the highest fitness payoff.
Robert MacArthur, J M Emlen, and Eric Pianka, first proposed an
optimal foraging theory in an independent paper in 1966. This theory argued that because of the key importance of successful foraging to an individual's survival, it should be possible to predict foraging behavior by using decision theory to determine the behavior that would be shown by an "optimal forager" - one with perfect knowledge of what to do to maximize usable food intake. While the behavior of real animals inevitably departs from that of the optimal forager, optimal foraging theory has proved very useful in developing hypotheses for describing real foraging behavior. Departures from optimality often help to identify constraints either in the animal's behavioral or cognitive repertoire, or in the environment, that had not previously been suspected. With those constraints identified, foraging behavior often does approach the optimal pattern even if it is not identical to it.
There are many versions of optimal foraging theory that are relevant to different foraging situation. These include:
The optimal diet model, which describes the behavior of a forager that encounters different types of prey and must choose which to attack
Patch selection theory, which describes the behavior of a forager whose prey is concentrated in small areas with a significant travel time between them
Central place foraging theory, which describes the behavior of a forager that must return to a particular place in order to consume its food, or perhaps to hoard it or feed it to a mate or offspring.
In recent decades, optimal foraging theory has frequently been applied to the foraging behaviour of human
hunter-gatherers. Although this is controversial, coming under some of the same kinds of attack as the application of socio biological theory to human behaviour, it does represent a convergence of ideas from human ecology and economic anthropology that has proved fruitful and interesting.
Important contributions to foraging theory have been made by:
Eric Charnov, who developed the marginal value theorem to predict the behaviour of foragers using patches;
Sir
John Krebs, with work on the optimal diet model in relation to tits and chickadees;
John Goss-Custard, who first tested the optimal diet model against behaviour in the field, using redshank, and then proceeded to an extensive study of foraging in the Common Pied Oystercatcher.



FODDER

Fodder
From Wikipedia, the free encyclopedia
( http://en.wikipedia.org/wiki/Fodder )


Fodder factory set up by an individual farmer to produce customized cattle feed
In agriculture, fodder or animal feed is any foodstuff that is used specifically to feed domesticated livestock, such as cattle, goats, sheep, horses, chickens and pigs. Most animal feed is from plants but some is of animal origin. "Fodder" refers particularly to food given to the animals (including plants cut and carried to them), rather than that which they forage for themselves (see forage). It includes hay, straw, silage, compressed and pelleted feeds, oils and mixed rations, and also sprouted grains and legumes.
The worldwide animal feed industry consumed 635 million tons of feed (compound feed equivalent) in 2006, with an annual growth rate of about 2%. The use of agricultural land to grow feed rather than human food can be controversial; some types of feed, such as corn (maize), can also serve as human food, while others such as grass cannot. Some agricultural by-products which are fed to animals may be considered unsavory by human consumers.

Common plants specifically grown for fodder

Round hay bales
Alfalfa (lucerne)
Barley
Birdsfoot trefoil
Brassicas
Chau moellier
Kale
Rapeseed (Canola)
Rutabaga (swede)
Turnip
Clover
Alsike clover
Red clover
Subterranean clover
White clover
Grass
False oat grass
Fescue
Bermuda grass
Brome
Heath grass
Meadow grasses (from naturally mixed grassland swards)
Orchard grass
Ryegrass
Timothy-grass
Maize (corn)
Millet
Oats
Sorghum
Soybeans
Trees (pollard tree shoots for "tree-hay")
Wheat

Types of fodder
various types of legume (left) and grass (right) fodder
Compound feed and premixes, often called pellets, nuts or (cattle) cake.
Crop residues: stover, copra, straw, chaff, sugar beet waste
Fish meal
Freshly cut grass and other forage plants
Meat and bone meal (now illegal in many areas due to risk of BSE)
Molasses
Oil cake and press cake
Oligosaccharides
Conserved forage plants: hay and silage
Seaweed
Seeds and grains, either whole or prepared by crushing, milling etc
Sprouted grains and legumes
Yeast extract

Health concerns
Barley is a crop sometimes grown for fodder
In the past, mad cow disease spread through the inclusion of ruminant meat and bone meal in cattle feed due to prion contamination. This practice is now banned in most countries where it has occurred. Some animals have a lower tolerance for spoiled or moldy fodder than others, and certain types of molds, toxins, or poisonous weeds inadvertently mixed into a food source may cause economic losses due to sickness or death of the animals.

Sprouted grains as fodder
Fodder in the form of sprouted grains and legumes can be grown in a small-scale environment. Sprouted grains can greatly increase the nutritional value of the grain compared with feeding the "raw" (ungerminated) grain to stock.



Sunday 15 February 2009

Anglo-Nubian

The Anglo-Nubian, or simply Nubian in the United States, is a breed of domestic goat.
The breed was developed in Great Britain of native milking stock and goats from the Middle East and North Africa. Its distinguishing characteristics include large, pendulous ears and a "Roman" nose. Due to their Middle-Eastern heritage, Anglo-Nubians can live in very hot climates and have a longer breeding season than other dairy goats. Considered a dairy or dual-purpose breed, Anglo-Nubians are known for the high butterfat content of their milk, although on average, the breed produces less volume of milk than other dairy breeds.

Anglo-Nubians are large, with does weighing at least 135 lb. (61 kg.) [3] and 175 lb. (79 kg) for bucks. The minimum height of the breed, measured at the withers, is 30 inches (76 cm) for does and 35 inches (88 cm) for bucks [1]. Like most dairy goats, they are normally kept hornless by disbudding within approximately two weeks of birth.





History





The Anglo-Nubian breed originated in England as a cross between the Old English Milch Goat and the Zariby and Nubian bucks imported from India, Russia, and Egypt. They have been exported to most countries from England and in the United States are referred to as simply Nubians.





Breed characteristics





The typical Nubian is large in size and carries more flesh than other dairy breeds. The Nubian breed standard specifies large size, markings can be any color, the ears are long, pendulous, and the nose is Roman. The Nubian temperament is sociable, outgoing, and vocal. Because of its elongated ears and sleek body, the Nubian is occasionally nicknamed the "Lop-Eared Goat" or "Greyhound Goat".





Breed standard





According to the American Dairy Goat Association the Nubian goat should be:
[ ] a relatively large, proud, and graceful dairy goat of mixed Asian, African, and European origin, known for high quality, high butterfat, milk production.

The head is the distinctive breed characteristic, with the facial profile between the eyes and the muzzle being strongly convex (Roman nose). The ears are long (extending at least one inch [2.54 cm] beyond the muzzle when held flat along the face), wide and pendulous. They lie close to the head at the temple and flare slightly out and well forward at the rounded tip, forming a "bell" shape. The ears are not thick, with the cartilage well defined. The hair is short, fine and glossy. Any color or colors, solid or patterned, is acceptable.





Uses





The Nubian's size makes it a very useful dual purpose animal. The Nubian breed leads the way for the dairy breeds in butterfat production: it produces on average, 5% or more butterfat content. This is surpassed only by the Nigerian Dwarf , Pygmy goat and Boer goat breeds, which are less likely to be used for large scale milk production, as for a dairy or cheese making. Because of the higher fat content, the Nubian milk has more flavor than lower fat milks. Milk production is lower than other dairy breeds on average.

http://en.wikipedia.org/wiki/Anglo-Nubian

Friday 13 February 2009

Boer

Boer goat
From Wikipedia, the free encyclopedia


A Boer goat buck

The Boer goat was developed in South Africa in the early 1900s for meat production. Their name is derived from the Dutch word "Boer" meaning farmer. The Boer goat was probably bred from the indigenous goats of the Namaqua Bushmen and the Fooku tribes, with some crossing of Indian and European bloodlines being possible. They were selected for meat rather than milk production; due to selective breeding and improvement, the Boer goat has a fast growth rate and excellent carcass qualities, making it one of the most popular breeds of meat goat in the world. Boer goats have a high resistance to disease and adapt well to hot, dry semi-deserts. U.S. production is centered in west-central Texas, particularly in and around San Angelo. The original US breeding stock came from herds located in New Zealand. Only later were they imported directly from South Africa.
Boer goats commonly have white bodies and distinctive brown heads. Like the Nubian goat, they possess long, pendulous ears. They are noted for being docile, fast growing, and having high fertility rates. Does are reported to have superior mothering skills as compared to other goats. Mature Boer bucks weigh between 110-135 kg (240-300 lb), and mature does between 90-100 kg (200-220 lb).

Commercial meat production

A young kid
Meat goats are minimal care animals that are browsers by nature, preferring brush, shrubs, and broadleaf weeds rather than grass. Boer goats raised for meat production are typically raised on pastures. The main reasons for this are twofold: pastured goats are on average healthier animals than pen-raised goats; secondly, it costs far less to raise Boer goats on a diet of brush and weeds, than on bags of commercial feed. The ideal option is adequate year-round grazing with only mineral supplementation. Boer goats can be raised effectively in combination with cattle or sheep due to their preference for browse and the resulting limited impact on the grass cover. They do compete with other browsers, such as deer.
Trace minerals, especially copper, are particularly important to good goat health. Feed and mineral blocks marked "for sheep and goats" should be avoided. Copper in quantities suitable for goats is toxic to sheep, so dual sheep/goat feeds will almost always lack sufficient copper for goats. Copper deficiency is known to cause anemia, diarrhea, infertility, spontaneous abortions, and lethargy.

[edit] Fencing
The three main cost of any Boer goat operation are land, goats, and fencing. Fencing is the second most important thing for goats after land. Without good, strong fencing, you can not have any goats. If goats are not overstocked then fencing is much less of an issue; however, goats are clever and stubborn and there are usually a few in every herd who dedicate themselves to mining every inch of the fence line looking for a weak link. Once it is discovered, they make the most of it, and the rest of the herd will not be far behind. Most farmers use 12.5 gauge fencing, with commercial 1047-6-12.5 (six-inch holes) being the least expensive and most common, however an electrically charged wire or three placed in between the goats and the fencing is often required to prevent escapes. More and more producers are experimenting with 8 and 10 strand four prong barb wire, with good success. Wire weave fence is also very good for goat with the exception of when they get their head stuck in the fence. Goats can be tied but this is not a very good method because goats are browsers not grazers so they don't like to eat in one spot. [www.freewebs.com/jstiegwhy] Website not updated but phone numbers are good File:Goatonsheep.bmp

[edit] Bucks

A male Boer Goat
The most critical part of any meat goat operation is the selection of a herd sire (breeding buck). A high quality buck can produce high quality offspring even when mated with an average doe. Boer goats tend to gain weight at about the same rate as their sire, so a buck from a proven fast growing bloodline will command the highest price, as its offspring will tend to also be fast growers. The primary market for slaughter goats is a 15-36 kg (35-80 lb) kid; kids should reach marketable size at weaning age. The kid of a proven fast-growing sire might weigh 36 kg (80 lb) at 90 days, while the kid of a poor quality sire might weigh only 15 kg (35 lb) at 90 days. An average quality buck will initially be less expensive to purchase; however, they can significant undermine an operations long-term profitability. Other criteria for a breeding Buck include:
Jaw alignment – most meat goats are raised on pasture. A goat with poor jaw alignment will be at a significant disadvantage when feeding on pasture; poor jaw alignment is not acceptable in a commercial herd sire.
Good feet and legs: needed to move about the pasture. Hoof rot is a common problem for goats that live in high rain areas if the hooves are not clipped regularly.
Two well formed equal-size testes in a single scrotum: -the main purpose of a buck is to breed does.
For breeding purposes, one buck is normally required for every 25-35 does. Under ideal conditions the ratio can be as high as one buck for every 50 does. Bucks are normally separated from the does except for when breeding is specifically intended. Often does are bred for six weeks every 8 months, resulting in three kid crops every two years!
Successful bucks must be able to survive on pasture. Pen-raised bucks will stay near their pen, while the does they are supposed to breed are out in the pasture.

[edit] Does
Does used to breed show quality goats are normally very large, as show goats are expected to be of large stature. For commercial meat production medium size does are normally preferred as they produce the same number of kids, but require less feed to do so.

A three year old buck
As a general rule the more kids born per doe, the greater profit margins for the owner. Boer goats are polyestrous (they can breed throughout the year), and they reach sexual maturity at 5 months of age. A typical breeding program is to produce 3 kid crops every 2 years; meaning the does are pregnant for 5 months, nurse their kids for 3 months, and then are rebred. Multiple births are common and a 200% kid crop is achievable in managed herds. Usually first time does will have one kid, but it is possible for them to have more. After that, they will have an average of two kids each time.
Weaning size is largely controlled by how much milk the mother produces, along with how long she allows each kid to nurse. Does weaning large kids should be kept, those weaning small to medium kids should be removed from the herd.
The presence of a buck causes does to come into estrus (heat) which lasts about 24-36 hours. The gestation period for does varies from 149 to 155 days.
Boer does are normally very good mothers, requiring only minimal attention from the owner; however, this is not always true when a doe delivers her very first kid. First time moms should be supervised as the mothering instinct may not manifest itself the first time she delivers. After the first time, Boer does normally make excellent mothers. If after that a doe does not present herself to have "mothering instincts" it is best not to keep her.

[edit] Cross breeding

A 7/8 (F3) Boer Goat, paint doe
While purebred bucks are usually preferred for breeding purposes, it is common to use crossbreed does for kid production, with the resulting offspring being 7/8 or more Boer. Common crosses are Boer x Spanish goat, Boer x Angora goat, Boer x Kiko goat, and Boer x Nubian goat.
Percentage Boer goats are very common in commercial meat herds, and with those just starting out in the Boer goat business due to ease of acquisition and affordability. Over time, percentage animals can be bred up to American purebred status. An American purebred is a Boer goat of 15/16ths Boer blood (F4) for does and 31/32nds blood (F5) for Boer bucks. Bucks must be one generation of Boer breeding higher then does to achieve this status because they have the potential to spread their genetic pool much further then any single doe; a higher level of Boer blood lessens the chances of other breed qualities in the offspring. American purebreds can never be registered as Fullblood (FB), many breeders will still use a good American Purebred buck with excellent results.
Many producers still prefer purebred or fullblood bucks and does, and intentional crossbreeding is far from universal.
Note: The 'F' designation is the commonly used shorthand for indicating the percentage of pure blood (boer in this case) resulting from cross breeding of a Pureblood boer buck with does of other breeds:
F1 : 1/2 boer blood (Pureblood buck sire, other breed doe)
F2 : 3/4 boer blood (Pureblood buck sire, F1 doe)
F3 : 7/8 boer blood (Pureblood buck sire, F2 doe)
F4 : 15/16 boer blood (Pureblood buck sire, F3 doe)
F5 : 31/32 boer blood (Pureblood buck sire, F4 doe)

[edit] Show goats
Although Boer goats raised specifically for show purposes may seem to have little in common with pastured commercial goats, the difference is superficial. They are bred to be larger than normal goats, and meet specific visual appearances, but these very characteristics are valuable genes to add to the commercial herd. Boer goats were originally imported into the US and other countries for this very reason. Their value to ranchers lies in the improvement the addition of their unique genes can offer any breed of goats being raised for meat. Few producers could afford to maintain a herd of essentially useless animals. Show goats are bred to represent the most desirable characteristics of the Boer goat. And their main purpose is to introduce these animals to the public. It is also a method of recognizing the best of the best, although some really superior goats are not shown due to owner preference. Bucks and does that have been bred for show can be and often are used for commercial breeding stock.[1] To show, most Boer goats have to be registered with either the ABGA, IBGA, or USBGA.

[edit] Overstocking
Once a section of pasture has reached is full capacity, adding more goats becomes counterproductive. Adding goats does not increase the owner's profit margin. Overstocking results in forage resource depletion, weed and toxic plant problems increase, parasite loads increase, overall health of the animals declines, and the goats fail to gain weight. In addition, rainfall becomes less effective because the soil has been laid bare, so what rain that does fall turns to run-off instead of being absorbed; thus drought management becomes much harder or impossible. All these factors reduce profit. It is not possible to starve a profit from livestock or rangeland. eat meat its yummm

[edit] Udder Structure
In other breeds of goats it is a disqualifying trait to have more than two teats, Boer goats have been bred to have two or four, to easier nurse the higher numbers of kids they have been bred to have. Although the different breed registries do not agree 100% on other aspects, they do agree that up to two teats per side is acceptable.