Animal performance and carcass characteristics from confined lambs fed on concentrate feed and additives
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Data
2015
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Resumo
The number of sheep flocks in Brazil is increasing. It is known that lambs must be slaughtered when
young for producing quality meat. The current study evaluated the inclusion of protected methionine,
protected lysine, lysophospholipid and amylolytic enzymes in a diet to lambs and their effects on weight
gain and quantitative carcass traits at slaughtering. Eighty non-castrated male crossbred Dorper x Santa
Inês lambs, 20.57 ± 4.33 kg live weight, were used. The feedlot lasted 64 days and 60 animals were
slaughtered. There were no differences for live weight, daily feed intake, feed conversion and average
daily weight gain at the first 28 days of feedlot. From the 28th day lysophospholipid treatment presented the
highest live weight. Lysophospholipid and amylolytic enzyme presented the best performance in average
daily gain, followed by protected methionine, control and protected lysine. Lysophospholipid treatment
presented higher daily feed intake rates than protected lysine and protected methionine. Feed conversion
was lower for amylolytic enzyme and higher for control. No changing in carcass traits was reported due
to additives. Better performance may be achieved with feedlot lambs fed on diets with the addition of
amylolytic enzyme and lysophospholipid at the finishing phase.
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Amylolytic enzyme, Enzima amilolítica, Lysine, Ovine, Lysophospholipid, Methionine, Lisina, Lisofosfolipídeo, Metionina, Ovinos
Citação
PRADO, Tayrone F. et al. Animal performance and carcass characteristics from confined lambs fed on concentrate feed and additives. Anais da Academia Brasileira de Ciências, Rio de Janeiro, v. 87, n. 4, p. 2255-2263, 2015.