Resumen

PAZDIORA, R.D. et al. Frequency of the supply of food on the performance of cows and heifers in feedlot. Arch. zootec. [online]. 2014, vol.63, n.241, pp.3-12. ISSN 1885-4494.  https://dx.doi.org/10.4321/S0004-05922014000100001.

The effect of frequency of supply of forage (V) and concentrate (C) on the performance of cows and heifers in feedlot was studied. The treatments were the following frequencies in the supply: 2 V/C= V and C twice daily; 1 V/C= V and C once daily; 1 V/2C= once V and C twice daily, 1 V/3C= once V and C three times a day, for the cows or heifers. The experimental design was completely randomized in factorial arrangement 4 x 2, with four replications. There was no significant interaction between frequency of supplying and category animal. The dry matter intake (DMI) was superior for the animals fed 1 V/2C or 1 V/3C a day in relation with the supply of 2 V/C and 1 V/C, presenting values of 11.7; 11.4; 10.6 and 10.7 kg, respectively. The average daily gain (ADG) was not influenced by the frequency of supplying. The DMi was higher in cows (12.6 kg) than heifers (9.57 kg), having no difference in the weight gain. increasing frequency of feeding the concentrate to two or three times a day, provided greater consumption, not influencing the weight gain of cows and heifers confined.

Palabras clave : Daily weight gain; Food conversion; Intake.

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