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Oxalate and 'big head' disease in horses

11/12/2013

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The symptoms of “big head” disease (Osteodystrophia fibrosa) are affected gait, poor performance and swelling of bones of the head. Big head is a calcium imbalance caused when horses graze exclusively on grasses containing high levels of oxalate; that locks up calcium making it unabsorbable by the horse’s intestine.

Many introduced grasses contain oxalate. Setaria’s (purple pigeon grass has about half the oxalate content of other setarias) and buffel grasses contain the highest levels of oxalate followed by kikuyu, pangola and panics.Grasses with lower or zero oxalate content are Rhodes, creeping bluegrass, couch, paspalum and many native grasses.

Mixing legumes (Lucerne, clover, medic) with any high-oxalate grass in a grass/legume pasture will help to correct a calcium imbalance, while feeding calcium is also effective.

Source: DPI & F Note - Pastures www.dpi.qld.gov.au
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Pasture quality and maturity

8/12/2013

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“There is a time for everything, and a season for every activity under heaven:: a time to be born and a time to die, a time to plant and a time to uproot.,” Ecc 3: 1 - 2.

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Practical feeding of horses

17/9/2008

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When a horse is doing muscular work, its main requirement is a liberal supply of energy. Mineral and vitamin requirements for a working horse, however, are not much more than those required by an idle horse. It should be noted, however, that brood mares require a good supply of protein, minerals and vitamins during pregnancy, and these requirements will increase even further while nursing foals.

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herbs for livestock health

21/5/2008

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Have you ever driven along the road and noticed how healthy and shiny some cattle are, and on the other hand how under conditioned and dull some look? You can be pretty sure the farmers weren’t up at dawn shampooing and conditioning them all with some expensive stuff from the store. It is usually a result of the pasture they are on and to be more precise, whether or not the pasture has been improved in some way.

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All that glitters is not gold / All that's green is not lucerne

20/5/2008

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To be catagorised as prime lucerne hay, among other things, a bale should contain >90% lucerne. Cheaper lines of hay are often so because they contain 10% or more of plants other than lucerne.

The purpose of this article is to give a brief overview of what some of these plants are likely to be. Lucerne, being a perennial plant, generally lasts for 3-5 years after planting. During that time it is not uncommon for plants other than lucerne to appear in a lucerne paddock.

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banding a western horse's mane

18/12/2007

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Banding a horse’s mane is a pretty standard procedure for approved showing and for many open shows. It can make your horse’s mane lie flat and close to the neck even on a windy day. When the mane lies close to the neck it gives the illusion of a slimmer neck.

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Nutritive value of feed

8/12/2007

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Lucerne is the “king of fodders” because it provides high quality, high protein feed all year round. This is particularly significant in the subtropics where tropical grasses are frosted and lose their nutritive value in the winter months.

Compared with other feeds (see the following table) the protein and calcium contents of lucerne are usually high, whereas higher levels of metabolisable energy can be found in cereal crops and fresh grasses.

The phosphorus content of lucerne is generally lower than that needed by dairy cows. Supplementing dairy cows with phosphorus is recommended.

Source: The Lucerne Management Handbook 4th ed.
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Understanding more about lucerne

23/8/2006

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Lucerne (Medicago sativa) is thought to have originated somewhere in north-western Iran and north-eastern Turkey. Varieties range from winter-dormant, through to winter-active lucerne.

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Prime vs Shedded Lucerne

15/8/2006

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Prime hay is the classification given to hay that has good green colour, plenty of intact leaf, and relatively finesoft stems. It may contain up to 10% of other plant material, such as grass, but should be free of prohibited weeds and mould, fungi, or weather damage. There is actually a grade above prime, Choice, that is more pure, and of a higher standard all around. These classifications do not specify age, but most people assume prime hay to be prime green, which is as fresh as possible (generally less than a month).

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Management of pastures for horses

1/11/2005

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Horses are hard on pastures. Unlike cattle, horses have upper incisors and mobile lips which enable them to selectively and heavily graze pastures. “Horse” pastures are easily recognized because they have alternating areas of heavily and lightly grazed pasture. This pattern is referred to as “lawns” and “rough”.

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    Craig Kapernick

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