According to a 2 × 2 cross-over design, 14 lactating Holstein–Friesian cows were fed two isofibrous and isoenergetic diets based on either 14.5 % of crude protein (LOW CP diet) or 16.5 % (HIGH CP diet). Milk yield and quality and metabolic profile were detected during the third week of each experimental period. Dietary treatment had no effect on dry matter (DM) intake (21.0 kg/d on average), milk yield (34.7 kg/d on average), and milk protein content (3.48 % on average). LOW CP fed cows showed a lower milk urea content (19.4 vs. 29.7 mg/dl; P< 0.01). In LOW CP treatment, it was observed a significant increase of plasma globulins, glucose, and creatinine meanwhile the urea level was significant lower. The efficiency of CP utilization was higher (0.39 vs. 0.34; P<0.05) for the LOW CP group.

Changes in the metabolic profile and performance of dairy cows fed two dietary crude protein concentrations

Bernardini D.;Segato S.
;
Marchesini G.;Stefani A. L.;Gerardi G.;Andrighetto I.
2013

Abstract

According to a 2 × 2 cross-over design, 14 lactating Holstein–Friesian cows were fed two isofibrous and isoenergetic diets based on either 14.5 % of crude protein (LOW CP diet) or 16.5 % (HIGH CP diet). Milk yield and quality and metabolic profile were detected during the third week of each experimental period. Dietary treatment had no effect on dry matter (DM) intake (21.0 kg/d on average), milk yield (34.7 kg/d on average), and milk protein content (3.48 % on average). LOW CP fed cows showed a lower milk urea content (19.4 vs. 29.7 mg/dl; P< 0.01). In LOW CP treatment, it was observed a significant increase of plasma globulins, glucose, and creatinine meanwhile the urea level was significant lower. The efficiency of CP utilization was higher (0.39 vs. 0.34; P<0.05) for the LOW CP group.
2013
Trends in Veterinary Sciences: Current Aspects in Veterinary Morphophysiology, Biochemistry, Animal Production, Food Hygiene and Clinical Sciences
978-3-642-36487-7
978-3-642-36488-4
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/3416364
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 0
  • ???jsp.display-item.citation.isi??? ND
  • OpenAlex ND
social impact