![\"Print](\"https:\/\/cdn.printfriendly.com\/buttons\/printfriendly-pdf-email-button-notext.png\")
\n <\/a>\n <\/div><\/p>\nPoultry Diseases<\/h2><\/div>- All<\/a><\/li>
- A<\/a><\/li>
- B<\/a><\/li>
- C<\/a><\/li>
- D<\/a><\/li>
- E<\/a><\/li>
- F<\/a><\/li>
- G<\/a><\/li>
- H<\/a><\/li>
- I<\/a><\/li>
- M<\/a><\/li>
- N<\/a><\/li>
- O<\/a><\/li>
- P<\/a><\/li>
- R<\/a><\/li>
- S<\/a><\/li>
- T<\/a><\/li><\/ul><\/div><\/div>A<\/div>
- Acute Death Syndrome<\/a><\/li>
- Aflatoxicosis<\/a><\/li>
- Ascites<\/a><\/li>
- Aspergillosis<\/a><\/li>
- Avian Mycoplasmosis<\/a><\/li><\/ul><\/div><\/div>B<\/div>
- Blackhead<\/a><\/li>
- Bronchitis - Infectious<\/a><\/li>
- Bumblefoot<\/a><\/li><\/ul><\/div><\/div>C<\/div>
- Calcium and Phosphorus Deficiency<\/a><\/li>
- Cannibalism<\/a><\/li>
- Chronic Respiratory Disease<\/a><\/li>
- Coccidiosis<\/a><\/li>
- Crop Impaction<\/a><\/li><\/ul><\/div><\/div>D<\/div>
- Dermanyssus gallinae<\/a><\/li>
- Duodenal Dropsy<\/a><\/li><\/ul><\/div><\/div>E<\/div>
- Eimeria in Chickens<\/a><\/li>
- Enterohepatitis<\/a><\/li><\/ul><\/div><\/div>F<\/div>
- Favus<\/a><\/li>
- Feather Pecking<\/a><\/li>
- Flip Over<\/a><\/li>
- Foot Burn<\/a><\/li>
- Foot Lesions<\/a><\/li>
- Footpad Dermatitis<\/a><\/li><\/ul><\/div><\/div>G<\/div>
- Gapes<\/a><\/li>
- Gizzard Impaction<\/a><\/li>
- Grass Impaction<\/a><\/li>
- Gumboro<\/a><\/li><\/ul><\/div><\/div>H<\/div>
- Helminthiasis<\/a><\/li>
- Histomoniasis<\/a><\/li><\/ul><\/div><\/div>I<\/div>
- Infectious Bronchitis<\/a><\/li>
- Infectious Bursal Disease<\/a><\/li>
- Infectious Enterohepatitis<\/a><\/li><\/ul><\/div><\/div>M<\/div>
- Microsporum gypseum<\/a><\/li>
- Mites<\/a><\/li>
- Mycoplasmosis<\/a><\/li><\/ul><\/div><\/div>N<\/div>
- Northern Fowl Mite<\/a><\/li><\/ul><\/div><\/div>O<\/div>
- Ornithonyssus sylvarum<\/a><\/li>
- Osteoporosis<\/a><\/li><\/ul><\/div><\/div>P<\/div>
- Pododermatitis<\/a><\/li><\/ul><\/div><\/div>R<\/div>
- Red Poultry Mite<\/a><\/li><\/ul><\/div><\/div>S<\/div>
- Scaly Leg Mite<\/a><\/li>
- Sudden Death Syndrome<\/a><\/li>
- Syngamus trachea<\/a><\/li><\/ul><\/div><\/div>T<\/div>
- Trichophyton megninii<\/a><\/li><\/ul><\/div><\/div><\/div><\/div>\n
Gizzard and Crop Impaction<\/h4>\n
Also known as: Grass Impaction<\/em><\/strong><\/p>\n<\/p>\n![\"Anatomy](\"https:\/\/www.farmhealthonline.com\/wp-content\/uploads\/2014\/07\/Anatomy-of-the-chicken-e1406800887811-300x211.jpg\")
<\/a>The crop and the gizzard are organs in the digestive tract of birds, separated by the proventriculus which is often referred to as the true stomach. The crop is a part of the esophagus in which chickens store food until ready for digestion. The proventriculus is where stomach acid, and digestive enzymes are secreted and the gizzard mixes the food with digestive fluids with the help of small stones ingested by the bird. <\/strong>Image source: www.poultryhub.org<\/strong><\/p><\/div>\n<\/span>Gizzard\u00a0impaction is a particular problem associated with ranging chickens. This is caused by long grass, or other material such as plastic bags, becoming coiled into a plug in the gizzard\u00a0(see image). Crop impaction can also\u00a0occur,\u00a0but is much less common.<\/strong><\/p>\nThe gizzard, an organ that is part of the digestive tract beneath the crop and is used to grind food by muscular contraction, is poorly developed in young birds. They are therefore not well prepared for the consumption of large volumes of grass. The muscles lining the walls of the gizzard develop only after a period of a week or more at grass (Christensen, 1995<\/a>).<\/strong><\/p>\nGizzard\u00a0impaction may eventually result in starvation if the bird is not treated. The coiled plug of grass restricts the movement of food into the duodenum.<\/p>\n
Christensen<\/a> (1998) describes how long “ropes” of twisted grass of up to 6cm in length resulted in mortality rates of up to 1% per week in free-range hens. On post-mortem, these ropes of grass were found extending into the duodenum from the gizzard. Egg quality, size and shell color declined to unacceptable levels (Christensen, 1998<\/a>).<\/p>\nMortality from impaction (mainly grass) in a free-range situation has been shown to be higher in the New Hampshire breed compared with ISA brown and white leghorn breeds (Kjaer and S\u00f8rensen, 2002<\/a>).<\/p>\n<\/div>\nControl and Prevention of Gizzard Impaction<\/h4>\n
The provision of grit can significantly aid the functioning of the gizzard. Although most free-ranging hens will pick up small stones and grit, the provision of a supplementary source will be required for birds that are reluctant rangers, or in situations where the soil is lacking stones.<\/p>\n
However, in certain situations the provision of grit will not necessarily prevent gizzard\u00a0impaction, as poultry maintained on pasture with fibrous grass can suffer severe problems even when supplied with grit. Christensen<\/a> (1998) advises that old and fibrous grass should be either removed after mowing or allowed to rot before poultry are introduced (Christensen, 1998<\/a>).<\/p>\nEncouragement of early adaptation to a grass-based diet and ensuring adequate consumption of feed and water is recommended. Daily monitoring of the crop-fill is a useful procedure in that it allows confirmation of the proportion of chicks consuming feed and can give inexperienced poultry keepers feedback on the effectiveness of their brooding management. Further\u00a0information can be found on the Poultry Site here<\/a>.<\/p>\n<\/div>\nTreating Gizzard\u00a0Impaction<\/h4>\n
Although there is little veterinary guidance on the treatment of impaction of poultry, Christensen<\/a> (1998) reported successful treatment with 3g of Epsom salts per 100 birds per day, plus 10-15ml of liquid molasses per bird fed as a wet mash for four days. Further energy and lubrication can be provided by the addition of vegetable oil. Most of the grass plugs will be passed out within the first two days of treatment and mortalities should stop. The molasses component of the treatment will aid the recovery of the birds (Christensen, 1998<\/a>).<\/p>\nBanks (1979) recommends the use of a syringe to administer approximately half a tumbler of warm water to individual birds with this condition. By turning the bird upside down and gently massaging the crop may then release the mass of grassy material (Banks, 1979<\/a>).<\/p>\nThere will often be a build-up of fluid when the gizzard is impacted and if the bird is (briefly) inverted the fluid can be expelled, but without resolution of the blockage by the next day the fluid will be back. There is often damage to nerves around the gizzard or crop from the impaction and\/or physical damage to these organs. Mycotoxins can also become an issue. A variety of treatments can be tried but this is often an incurable condition.<\/p>\n
Surgery is an option, but the farm vet should be consulted.<\/p>\n
<\/div>\nGood Practice Based on Current Knowledge<\/h4>\n\n- A source of grit should be supplied<\/li>\n
- Birds should be kept on short, fresh grass, and older, mature and fibrous grass should be avoided<\/li>\n
- Fibrous grass should be removed after mowing or allowed to rot before birds have access to the land.<\/li>\n
- Remove nails and other potentially dangerous foreign bodies from house and range<\/li>\n
- Good brooding management to encourage early adaptation to the diet and adequate consumption of feed and water is recommended<\/li>\n<\/ul>\n
- All<\/a><\/li>
- A<\/a><\/li>
- B<\/a><\/li>
- C<\/a><\/li>
- D<\/a><\/li>
- E<\/a><\/li>
- F<\/a><\/li>
- G<\/a><\/li>
- H<\/a><\/li>
- I<\/a><\/li>
- M<\/a><\/li>
- N<\/a><\/li>
- O<\/a><\/li>
- P<\/a><\/li>
- R<\/a><\/li>
- S<\/a><\/li>
- T<\/a><\/li><\/ul>
<\/div><\/div>A<\/div>- Acute Death Syndrome<\/a><\/li>
- Aflatoxicosis<\/a><\/li>
- Ascites<\/a><\/li>
- Aspergillosis<\/a><\/li>
- Avian Mycoplasmosis<\/a><\/li><\/ul>
<\/div><\/div>B<\/div>- Blackhead<\/a><\/li>
- Bronchitis - Infectious<\/a><\/li>
- Bumblefoot<\/a><\/li><\/ul>
<\/div><\/div>C<\/div>- Calcium and Phosphorus Deficiency<\/a><\/li>
- Cannibalism<\/a><\/li>
- Chronic Respiratory Disease<\/a><\/li>
- Coccidiosis<\/a><\/li>
- Crop Impaction<\/a><\/li><\/ul>
<\/div><\/div>D<\/div>- Dermanyssus gallinae<\/a><\/li>
- Duodenal Dropsy<\/a><\/li><\/ul>
<\/div><\/div>E<\/div>- Eimeria in Chickens<\/a><\/li>
- Enterohepatitis<\/a><\/li><\/ul>
<\/div><\/div>F<\/div>- Favus<\/a><\/li>
- Feather Pecking<\/a><\/li>
- Flip Over<\/a><\/li>
- Foot Burn<\/a><\/li>
- Foot Lesions<\/a><\/li>
- Footpad Dermatitis<\/a><\/li><\/ul>
<\/div><\/div>G<\/div>- Gapes<\/a><\/li>
- Gizzard Impaction<\/a><\/li>
- Grass Impaction<\/a><\/li>
- Gumboro<\/a><\/li><\/ul>
<\/div><\/div>H<\/div>- Helminthiasis<\/a><\/li>
- Histomoniasis<\/a><\/li><\/ul>
<\/div><\/div>I<\/div>- Infectious Bronchitis<\/a><\/li>
- Infectious Bursal Disease<\/a><\/li>
- Infectious Enterohepatitis<\/a><\/li><\/ul>
<\/div><\/div>M<\/div>- Microsporum gypseum<\/a><\/li>
- Mites<\/a><\/li>
- Mycoplasmosis<\/a><\/li><\/ul>
<\/div><\/div>N<\/div>- Northern Fowl Mite<\/a><\/li><\/ul><\/div><\/div>O<\/div>
- Ornithonyssus sylvarum<\/a><\/li>
- Osteoporosis<\/a><\/li><\/ul>
<\/div><\/div>P<\/div>- Pododermatitis<\/a><\/li><\/ul><\/div><\/div>R<\/div>
- Red Poultry Mite<\/a><\/li><\/ul><\/div><\/div>S<\/div>
- Scaly Leg Mite<\/a><\/li>
- Sudden Death Syndrome<\/a><\/li>
- Syngamus trachea<\/a><\/li><\/ul>
<\/div><\/div>T<\/div>- Trichophyton megninii<\/a><\/li><\/ul><\/div><\/div><\/div><\/div>\n
Gizzard and Crop Impaction<\/h4>\n
Also known as: Grass Impaction<\/em><\/strong><\/p>\n
<\/p>\n
<\/a>The crop and the gizzard are organs in the digestive tract of birds, separated by the proventriculus which is often referred to as the true stomach. The crop is a part of the esophagus in which chickens store food until ready for digestion. The proventriculus is where stomach acid, and digestive enzymes are secreted and the gizzard mixes the food with digestive fluids with the help of small stones ingested by the bird. <\/strong>Image source: www.poultryhub.org<\/strong><\/p><\/div>\n
<\/span>Gizzard\u00a0impaction is a particular problem associated with ranging chickens. This is caused by long grass, or other material such as plastic bags, becoming coiled into a plug in the gizzard\u00a0(see image). Crop impaction can also\u00a0occur,\u00a0but is much less common.<\/strong><\/p>\n
The gizzard, an organ that is part of the digestive tract beneath the crop and is used to grind food by muscular contraction, is poorly developed in young birds. They are therefore not well prepared for the consumption of large volumes of grass. The muscles lining the walls of the gizzard develop only after a period of a week or more at grass (Christensen, 1995<\/a>).<\/strong><\/p>\n
Gizzard\u00a0impaction may eventually result in starvation if the bird is not treated. The coiled plug of grass restricts the movement of food into the duodenum.<\/p>\n
Christensen<\/a> (1998) describes how long “ropes” of twisted grass of up to 6cm in length resulted in mortality rates of up to 1% per week in free-range hens. On post-mortem, these ropes of grass were found extending into the duodenum from the gizzard. Egg quality, size and shell color declined to unacceptable levels (Christensen, 1998<\/a>).<\/p>\n
Mortality from impaction (mainly grass) in a free-range situation has been shown to be higher in the New Hampshire breed compared with ISA brown and white leghorn breeds (Kjaer and S\u00f8rensen, 2002<\/a>).<\/p>\n
<\/div>\nControl and Prevention of Gizzard Impaction<\/h4>\n
The provision of grit can significantly aid the functioning of the gizzard. Although most free-ranging hens will pick up small stones and grit, the provision of a supplementary source will be required for birds that are reluctant rangers, or in situations where the soil is lacking stones.<\/p>\n
However, in certain situations the provision of grit will not necessarily prevent gizzard\u00a0impaction, as poultry maintained on pasture with fibrous grass can suffer severe problems even when supplied with grit. Christensen<\/a> (1998) advises that old and fibrous grass should be either removed after mowing or allowed to rot before poultry are introduced (Christensen, 1998<\/a>).<\/p>\n
Encouragement of early adaptation to a grass-based diet and ensuring adequate consumption of feed and water is recommended. Daily monitoring of the crop-fill is a useful procedure in that it allows confirmation of the proportion of chicks consuming feed and can give inexperienced poultry keepers feedback on the effectiveness of their brooding management. Further\u00a0information can be found on the Poultry Site here<\/a>.<\/p>\n
<\/div>\nTreating Gizzard\u00a0Impaction<\/h4>\n
Although there is little veterinary guidance on the treatment of impaction of poultry, Christensen<\/a> (1998) reported successful treatment with 3g of Epsom salts per 100 birds per day, plus 10-15ml of liquid molasses per bird fed as a wet mash for four days. Further energy and lubrication can be provided by the addition of vegetable oil. Most of the grass plugs will be passed out within the first two days of treatment and mortalities should stop. The molasses component of the treatment will aid the recovery of the birds (Christensen, 1998<\/a>).<\/p>\n
Banks (1979) recommends the use of a syringe to administer approximately half a tumbler of warm water to individual birds with this condition. By turning the bird upside down and gently massaging the crop may then release the mass of grassy material (Banks, 1979<\/a>).<\/p>\n
There will often be a build-up of fluid when the gizzard is impacted and if the bird is (briefly) inverted the fluid can be expelled, but without resolution of the blockage by the next day the fluid will be back. There is often damage to nerves around the gizzard or crop from the impaction and\/or physical damage to these organs. Mycotoxins can also become an issue. A variety of treatments can be tried but this is often an incurable condition.<\/p>\n
Surgery is an option, but the farm vet should be consulted.<\/p>\n
<\/div>\nGood Practice Based on Current Knowledge<\/h4>\n
- \n
- A source of grit should be supplied<\/li>\n
- Birds should be kept on short, fresh grass, and older, mature and fibrous grass should be avoided<\/li>\n
- Fibrous grass should be removed after mowing or allowed to rot before birds have access to the land.<\/li>\n
- Remove nails and other potentially dangerous foreign bodies from house and range<\/li>\n
- Good brooding management to encourage early adaptation to the diet and adequate consumption of feed and water is recommended<\/li>\n<\/ul>\n
- Sudden Death Syndrome<\/a><\/li>
- Scaly Leg Mite<\/a><\/li>
- Red Poultry Mite<\/a><\/li><\/ul>
- Osteoporosis<\/a><\/li><\/ul>
- Ornithonyssus sylvarum<\/a><\/li>
- Mites<\/a><\/li>
- Infectious Bursal Disease<\/a><\/li>
- Histomoniasis<\/a><\/li><\/ul>
- Gizzard Impaction<\/a><\/li>
- Feather Pecking<\/a><\/li>
- Enterohepatitis<\/a><\/li><\/ul>
- Duodenal Dropsy<\/a><\/li><\/ul>
- Cannibalism<\/a><\/li>
- Bronchitis - Infectious<\/a><\/li>
- Aflatoxicosis<\/a><\/li>
- A<\/a><\/li>