Influence of a deficient intake of high and low degradable protein on body composition, metabolic adaptation, production and reproductive performance in early lactation dairy cows

S. Fekete, G. Huszenicza, R. O. Kellems, I. Szakáll, H. Fébel, F. Husvéth, P. Nagy, M. Kulcsár, Emma Kósa, T. Gaál, P. Rudas, Klára Oppel

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

High-yielding dairy cows (n = 34) were divided into high (HD) and low (LD) protein degradability groups after delivery, and used for a feeding trial which lasted up to day 80 ± 10 of lactation. The cows were regularly weighed, their body condition was scored (BCS), and their reproductive status assessed. Blood samples were taken simultaneously, and ruminai fluid was collected on the last day of the trial. On postpartum day 45 ± 6 and 11 days thereafter two prostaglandin F (PGF) injections were administered. The ammonia and urea concentrations of the ruminai fluid were higher in cows of group HD. The C2:C3 ratio was 2.7:1 vs. 2.3:1 in HD and LD cows, respectively. The amino acid and lipid composition of blood reflected the dietary treatments. The BCS and blood urea concentration were slightly higher in HD animals. The average daily milk production of LD cows was 1.5 kg higher than that of HD cows. The pregnancy rates of the two groups at day 200 after calving did not differ, but LD cows showed their first visible oestrus and reconceived significantly (p <0.05) later. It can be concluded that - at a marginal energy supply - a moderate (13%) deficiency of rumen-degradable protein during the first 10 weeks after calving can be more detrimental to reproductive performance than a severe (27%) deficiency of undegradable protein.

Original languageEnglish
Pages (from-to)309-333
Number of pages25
JournalActa Veterinaria Hungarica
Volume44
Issue number3
Publication statusPublished - 1996

Fingerprint

early lactation
Body Composition
Lactation
body composition
reproductive performance
dairy cows
cows
Urea
Protein Deficiency
Proteins
Dinoprost
proteins
Rumen
Estrus
Pregnancy Rate
Ammonia
Postpartum Period
body condition
calving
blood

Keywords

  • Blood and ruminai fluid parameters
  • Body composition
  • Body condition
  • Conception rate
  • Postpartum period
  • Progesterone profile
  • Protein degradability
  • Urea space

ASJC Scopus subject areas

  • veterinary(all)

Cite this

Influence of a deficient intake of high and low degradable protein on body composition, metabolic adaptation, production and reproductive performance in early lactation dairy cows. / Fekete, S.; Huszenicza, G.; Kellems, R. O.; Szakáll, I.; Fébel, H.; Husvéth, F.; Nagy, P.; Kulcsár, M.; Kósa, Emma; Gaál, T.; Rudas, P.; Oppel, Klára.

In: Acta Veterinaria Hungarica, Vol. 44, No. 3, 1996, p. 309-333.

Research output: Contribution to journalArticle

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AU - Nagy, P.

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AU - Gaál, T.

AU - Rudas, P.

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