Effects of energy-protein supplementation frequency on performance of primiparous grazing beef cows during pre and postpartum.

ABSTRACT:

Objective

Twenty-four pregnant Nellore primiparous grazing cows were used to evaluate the effects of energy-protein supplementation and supplementation frequency during pre (105 d before calving) and postpartum (105 d after calving) on performance and metabolic characteristics.

Methods

Experimental treatments consisted of a control (no supplementation), daily supplementation (1.5 kg/d of concentrate/animal) and infrequent supplementation (4.5 kg of concentrate/animal every three days). During the pre and postpartum periods, concentrations of blood metabolites and animal performance were evaluated. Ureagenesis and energy metabolism markers were evaluated at prepartum period.

Results

Supplementation frequency did not alter (p>0.10) body weight (BW), average daily gain (

SUBMITTER: Moura FH 

PROVIDER: S-EPMC7468163 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature