Productive performance and economic analysis of Santa Inês sheep slaughtered at different subcutaneous fat levels

Authors

  • Larissa de Oliveira Queiroz Universidade Federal de Sergipe, São Cristóvão, SE
  • Francisco de Assis Fonseca de Macêdo Universidade Estadual de Maringá, Maringá, PR
  • Gladston Rafael de Arruda Santos Universidade Federal de Sergipe, São Cristóvão, SE
  • Natália Holtz Alves Pedroso Mora Universidade Estadual de Maringá, Maringá, PR
  • Maryane Gluck Torres Universidade Estadual de Maringá, Maringá, PR
  • Talita Estéfani Zunino Santana Universidade Estadual de Maringá, Maringá, PR

DOI:

https://doi.org/10.17523/bia.v73n1p46

Keywords:

carcass, feedlot, costs, performance, sheep, profitability.

Abstract

The objective of this study was to evaluate the productive and economic performance of feedlot-finished Santa Inês lambs slaughtered at three subcutaneous fat levels. Twenty-four uncastrated male lambs with 100 ± 10 days of age and an initial body weight of 22.6 ± 3.9 kg were randomly assigned to three treatments and slaughtered at a subcutaneous fat thickness of 2.0, 3.0 and 4.0 mm. A completely randomized design consisting of three treatments and eight repetitions per treatment was adopted. Productivity parameters included final body weight, dry matter intake, daily and total weight gains, and feed conversion. For the determination of economically viable fat thickness for slaughter, only direct production costs such as lamb purchase costs, feed costs and cost of labor were considered, and revenue, expenses and profit were analyzed. The final body weight and total weight gain differed significantly (P<0.05) between treatments. Lambs slaughtered at a subcutaneous fat thickness of 3.0 and 4.0 mm had a higher final body weight (33.84 ± 1.71 and 34.65 ± 1.79 kg, respectively) and total weight gain (9.06 ± 1.04 and 11.82 ± 1.02 kg). However, lambs with 3.0 mm fat thickness exhibited better economic results (profit of US$ 3.10 per kg cold carcass). The slaughter of Santa Inês lambs at 3.0 mm subcutaneous fat thickness is recommended since it provides better productive performance, higher profit per kilogram carcass, and greater profitability.

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Published

2016-03-31

Issue

Section

PRODUCTION SYSTEM AND AGRIBUSINESS

How to Cite

Productive performance and economic analysis of Santa Inês sheep slaughtered at different subcutaneous fat levels. (2016). Bulletin of Animal Husbandry, 73(1), 46-52. https://doi.org/10.17523/bia.v73n1p46

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