OILSEEDS IN DIETS OF FATTENING LAMBS

Author(s)

Aferrir, G. ^[1] ; Cacao, M. M. F. ^[2] ; Henrique, W. ^[3] ; Guizzo, M. M. ^[4] ; Paz, C. C. P. ^[5] ; Pereira, A. S. C. ^[6]

Affiliation

^[1] Agron Inst Campinas, Jau, SP - Brazil

^[2] Polo Medio Paranapanema, APTA Reg, Assis, SP - Brazil

^[3] Inst Zootecnia, Unidade Pesquisa & Dev Sao Jose do Rio Preto, Sao Jose Do Rio Preto, SP - Brazil

^[4] Univ Estadual Campinas, Fac Engn Alimentos, Campinas, SP - Brazil

^[5] Ctr Avancado Pesquisa Bovinos Corte, Inst Zootecnia, Sertaozinho, SP - Brazil

^[6] Univ Sao Paulo, Fac Med Vet & Zootecnia, Pirassununga, SP - Brazil

• Document type: Journal article
• Source: Boletim da Indústria Animal; v. 76, 2019.
• Web of Science Citations: 0

Abstract

An experiment was conducted to compare different oilseeds in replacement of ground corn in diets of fattening lambs, evaluating performance, apparent diet digestibility, ingestive behavior, and carcass traits. Twenty-four crossbred lambs, three months old and with initial body weight 25.97 +/- 0.75 kg, were kept in individual pens. The animals received one of the following diets: `control' (no oilseeds, 3.11% Ether Extract - EE), `cottonseed' (6.14% EE), `sunflower' (6.33% EE), and `soybean' (6.30% EE). All diets contained 23.63% of coast cross hay and 76.37% of concentrate. After 84 days in feedlot, the animals were slaughtered and the carcasses were evaluated. The dry matter intake (DMI) and daily weight gain (DWG) of animals fed with the control diet was higher than sunflower (P <= 0.05). Final body weight and carcass weight were higher (P <= 0.05) in the control (42.42 kg and 19.27 kg, respectively) than for sunflower diet (34.85 kg and 16.05 kg, respectively). Neutral detergent fiber (NDF) digestibility was reduced (P <= 0.05) when the animals received cottonseed diet (50.34%) in comparison to soybean (71.07%), sunflower (67.07%) and control (66.50%). NDF digestibility for soybean, sunflower and control diets did not differ from each other. Lower (P <= 0.05) EE digestibility was observed for the control diet (73.67%). There were no differences (P >= 0.05) in the ingestive behavior, however, the addition of cottonseed or sunflower negatively affected (P <= 0.05) rumination efficiency of NDF. Sunflower should not be included in high concentrate diets for fattening lambs. (AU)

• FAPESP's process: 10/17024-1 - Behavior intake and apparent digestibility of diets containing whole grain of oil seeds for lambs
• Grantee: Gabriela Aferri
• Support Opportunities: Regular Research Grants