Resumen

CARRILLO-HERRERA, Jay et al. Productive performance and carcass characteristics of steers fed with glucogenic precursor. Abanico vet [online]. 2016, vol.6, n.1, pp.13-21. ISSN 2448-6132.

The aim of this study was to evaluate the effects of commercial gluocogenic precursor (Lipofeed(r)) onproductive performance and carcass characteristics of steers in feedlot. The study lasted 120 days, and 16steers of different breeds of cattle were used with an average weight of 260±5 kg. Animals were fed with experimental diets; T1: 15 % alfalfa hay (AH), 15 % oat hay (OH), 20 % cotton seal (CS), 47 % rolled corn, 1 % minerals, 2 % bicarbonate; T2, T3, y T4 added 20, 40 and 60 g of glucogenic precursor. +. For administration, the glucogenic precursor was mixed with the ingredients of diets which were provided at 07:00, and 19:00 h. The intake of each diet, was restricted to 2.8% of live animal weight. Data obtained were analyzed with a completely randomized design (4 treatments and 4 replicates). The higher weight daily gain (WDG), feed conversion (FC), hot carcass weight (HCC) and area of rib eye (ARE) were obtained with the treatment of 20 g of glucogenic precursor (P<0.05). According the results of this research, it is concluded that 20 g of glucogenic precursor improves the productive variables and characteristics carcass of steers in feedlot.

Palabras llave : cattle; glucogenic precursor; productive performance; carcass characteristics..

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