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Influence of different phosphorus diets on bone parameters of growing pigs

Dian Todorov Kanakov orcid.org/0000-0002-0506-4439 ; Department of Internal Non-infection Diseases, Faculty of Veterinary Medicine, Thracian University, Stara Zagora, Bulgaria
Petko Ivanov Petkov ; Department of Internal Non-infection Diseases, Faculty of Veterinary Medicine, Thracian University, Stara Zagora, Bulgaria
Krasimir Todorov Stojanchev ; Department of Internal Non-infection Diseases, Faculty of Veterinary Medicine, Thracian University, Stara Zagora, Bulgaria

Sažetak

The objectives of this study were to examine the response of growing pigs to a level of phosphorus in excess of current usage and also to examine the effect of reducing phosphorus level in the later growing stages on bone characteristics. After slaughter, third metacarpals were removed from the front right foot of experimental pigs and the bones were weighed. Overall length of each bone and the width of bone shaft at the narrow and wide dimension were measured. Wall thickness, shear force resistance and ash percentage were also measured. Dry weight of bone was significantly affected by treatment (P<0.05). There was a similar trend for both bone ash weight and ash percentage, with those fed a phase phosphorus diet (low phosphorus level in the later growing stages) having significantly lower values than the other treatments (P<0.01). There was a trend for increased stress as dietary phosphorus level increased. We can conclude that pig bone development was significantly affected by dietary phosphorus level. The low-phosphorus diet gave significantly poorer results than the adequate-phosphorus diet; while there were no beneficial effects of supplementing phosphorus at a level higher than 2.4 g/kg. Lowering the phosphorus level to 1.6 g/kg in the late finishing stage seemed to produce a deleterious effect.

Ključne riječi

pig; bone; phosphorus; minerals

Hrčak ID:

37436

URI

https://hrcak.srce.hr/37436

Datum izdavanja:

20.6.2005.

Podaci na drugim jezicima: hrvatski

Posjeta: 1.817 *