Productive performance of Holstein calves finished in feedlot or pasture

AUTOR(ES)

DIAS, ANA MARIA O., MENEZES, LUIS F.G. DE, PARIS, WAGNER, SANTOS, PRISCILA V. DOS, BIESEK, RONALDO R., MAFIOLETTI, RENAN D., MARCHESAN, RENATO

FONTE

An. Acad. Bras. Ciênc.

DATA DE PUBLICAÇÃO

31/07/2017

RESUMO

ABSTRACT The use of animals from dairy farms is an alternative to meat production since it provides an increment of total income for farmers. This study aims to evaluate the performance of Holstein calves finished in two feeding systems (feedlot or pasture). Forty-three animals with 58 days old and 57 kg were divided in two treatments: 23 animals finished in feedlot with corn silage plus concentrate based on corn and soybean meal (40:60); 20 animals kept in cultivated pastures according to the period of the year: Italian ryegrass (Lolium multiflorum) and pearl millet (Pennisetum americanum) with supplementation with the same feedlot-concentrate at 1% body weight. Animals were slaughtered with 200 kg. Dry matter and nutrient intake were determined, with the use of chromium oxide for estimating pasture intake. Feedlot animals had greater total intake and total digestible nutrients, resulting in higher average daily gain (0.949 vs 0.694 kg day-1). Crude protein intake, neutral detergent fiber and feed conversion did not show significant differences. Holstein calves have improved performance when finished in feedlot.

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