la cetosis en bovinos, Diapositivas de Zootecnia

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BOVINE

ACIDOSI

S

J O S E L Y N C A S C O 5 t o “ B ” N U T R I C I O N A N I M A L

Acidosis ruminal

Definition: It is an eating disorder, which affects both beef and dairy cattle, and is caused by the excessive accumulation of VFAs (volatile fatty acids) in the rumen. This accumulation is due to: Consuming plenty of low-fiber, high-starch carbohydrates. Insufficient supply of buffer substances in the rumen and/or inadequate adaptation of highly fermentable diets.

The decrease in rumen pH

provides:

The release of endotoxins.

These cause the synthesis of

histamine, which is a substance

related to damage to the

epithelium, producing ruminitis

-Consequence of repeated transient periods of moderately low rumen pH that are not sufficient to trigger the clinical symptomatology of acidosis -The rumen pH drops to values ranging from 5.2 to 5. -Decrease in DM dry matter consumption and CA feed conversion efficiency -Loss of body condition -Decreased milk production and fat content -Lower fiber degradation rate -Less consistency of stool -Laminitis, liver abscesses and abomasal displacement occur. CLASSIFICATIO N

Subacute or subclinical

acidosis:

PREDISPOSING FACTORS

 (^) Type of food  (^) Good palatability and inadequate physical constitution:  (^) Volume Consumed  (^) Water and mineral salt restriction

DETERMINANTS FACTORS  (^) Feed composition  (^) Grain Type  (^) Physical integrity of the grain  (^) Moisture content of the grain

DETERMINANTS

• (^) Rumen wall and liver of a cow without acidosis and another with parakeratosis resulting from acidosis Source: Rumen disorders in dairy cattle: a practical approach. Available on the Internet: http://www.portalveterinaria.com/modules.php?name=Articles&file (accessed 4 September 2007)

BIBLIOGRAPHY  (^) Campos, J. H. (2008). "Physiology of ruminal acidosis and its implications in animal production". Universidad de la Salle, Bogotá, Colombia.  (^) Gonzales, K. (January 15, 2008). Acidosis in cattle. Zootechnics and veterinary medicine is my passion. Accessed October 17, 2019. Retrieved from https://zoovetesmipasion.com/ganaderia/enfermedades-bovinas/acidosis-en- bovinos/#targetText=Definición%20de%20Acidosis%20en%20Bovinos,por%20cambios %20repentinos%20de%20alimento.  (^) Granja Salcedo, Yury Tatiana, & Ribeiro Junior, Carlos Stefenson, & Toro Gomez, Daniela Juliana, & Rivera Calderón, Luis Gabriel, & Machado, Mirela, & Manrique Ardila, Adalberto (2012). Rumen acidosis in dairy cattle: implications for animal production and health. REDVET. Electronic Journal of Veterinary Medicine, 13(4), undefined-undefined. [accessed October 17, 2019]. ISSN:. Available in: https://www.redalyc.org/articulo.oa?id=636/  (^) Feed management to avoid rumen acidosis. (September 18, 2013). Ganadería.com. Accessed October 17, 2019. Retrieved from: https://www.ganaderia.com/micrositio/Alltech/Manejo-de-la-alimentación-para-evitar- acidosis-ruminal.