Metabolic rate and its relationship with ascites in chicken genotypes

D.D. Malan, C.W. Scheele, J. Buyse, C. Kwakernaak, F.K. Siebrits, J.D. van der Klis, E. Decuypere

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26 Citations (Scopus)

Abstract

This review addresses the suggestion that the decline in dairy reproductive performance, as increasingly observed these days, may be due to a hampered process of metabolic adaptation in early lactating cows. In our opinion, adaptation to the negative energy balance is a gradual process. Because almost all cows do adapt in the long run, it is not possible to classify animals as adapted or non-adapted. The use of risk factors is more appropriate in this case and is discussed in this review. Among them are the body condition score and its derivatives, feed intake, the calculated negative energy balance, and metabolic parameters like the plasma concentration of insulin or the triacylglycerol content in the liver. Moreover, factors that play a role in the link between declined reproductive performance and the metabolic situation of the cow during the early lactating period are discussed. Among these are insulin, insulin-like growth factors, leptin, neuropeptide Y, non-esterified fatty acids, thyroid hormones, urea, and ammonia.
Original languageEnglish
Pages (from-to)309-315
JournalBritish Poultry Science
Volume44
Issue number2
DOIs
Publication statusPublished - 2003

Keywords

  • broiler chicken
  • physiological variables
  • ambient-temperature
  • growth
  • susceptibility
  • hemodynamics
  • performance
  • occlusion

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    Malan, D. D., Scheele, C. W., Buyse, J., Kwakernaak, C., Siebrits, F. K., van der Klis, J. D., & Decuypere, E. (2003). Metabolic rate and its relationship with ascites in chicken genotypes. British Poultry Science, 44(2), 309-315. https://doi.org/10.1080/000716603100024603