Effects of replacing canola meal with camelina expeller on intake, total tract digestibility, and feeding behavior of beef heifers fed high-concentrate diets
Salas Olivé, Hèctor (Universitat Autònoma de Barcelona. Departament de Ciència Animal i dels Aliments)
Castillejos, Lorena (Universitat Autònoma de Barcelona. Departament de Ciència Animal i dels Aliments)
Faturi, Cristian (Instituto da Saúde e Produçao Animal, Universidade Federal Rural da Amazônia)
Ferret, Alfred (Universitat Autònoma de Barcelona. Departament de Ciència Animal i dels Aliments)

Data:	2020
Resum:	To assess the effect of inclusion of camelina expeller in beef cattle diets, 24 Simmental heifers were used. Two experiments were carried out. In the first, two free-choice tests, one without and another with molasses, were conducted to know the preference of animals for a total mixed ration (TMR) made with a 90 to 10 concentrate to barley straw ratio, where canola meal (CM) or camelina expeller (CE) was used in the concentrate as a protein source. Heifers were allotted in four pens with two independent feedbunks, one for each diet. In the second, a replicated 4 × 4 Latin square design was used to assess the effects of the replacement of CM with CE on intake, digestibility, and sorting and animal behavior. The experiment was performed in four 28-d periods during which groups of three animals were allotted in each pen of 12. 5 m 2. Diets were formulated with a 90 to 10 concentrate to barley straw ratio and fed as TMR, and they were designed to contain 1) CM as main protein source and 0% of CE (0CE), 2) 3% of CE replacing CM (3CE), 3) 6% of CE replacing CM (6CE), and 4) 9% of CE replacing CM (9CE). In the free-choice test without molasses, heifers showed a greater preference for CM than for CE (38. 6 vs. 8. 7 kg/d; P < 0. 001). When molasses were added to the diet, the preference for CM was maintained (39. 1 vs. 9. 8 kg/d; P < 0. 001). Dry matter (DM), organic matter (OM), crude protein (CP), and neutral detergent fiber (NDF) intake was unaffected by the level of replacement of CM by CE (P.
Ajuts:	Ministerio de Economía y Competitividad FEDER/RTC-2015-265-5
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Beef cattle ; Camelina expeller ; Canola meal
Publicat a:	Translational Animal Science, Vol. 4 (april 2020) , p. 922-932, ISSN 2573-2102

DOI: 10.1093/tas/txaa050
PMID: 32705046

11 p, 396.1 KB

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