In vitro digestibility, In situ degradability, rumen fermentation and N metabolism of camelina co-products for beef cattle studied with a dual flow continuous culture system of camelina co-products for beef cattle
Salas, Hèctor. (Universitat Autònoma de Barcelona)
Castillejos, Lorena (Universitat Autònoma de Barcelona. Departament de Ciència Animal i dels Aliments)
López-Suárez, Montserrat (Universitat Autònoma de Barcelona. Departament de Ciència Animal i dels Aliments)
Ferret, Alfred (Universitat Autònoma de Barcelona. Departament de Ciència Animal i dels Aliments)
Universitat Autònoma de Barcelona. SGR-Grup de Recerca de Nutrició Maneig i Benestar Animal

Data:	2019
Resum:	Camelina meal (CM) and camelina expeller (CE) were compared with soybean meal (SM) and rapeseed meal (RM). Trial 1 consisted of a modified Tilley and Terry in vitro technique. Trial 2 was an in situ technique performed by incubating nylon bags within cannulated cows. Trial 3 consisted in dual-flow continuous culture fermenters. In Trial 1, CM, CE and RM showed similar DM digestibility and OM digestibility, and SM was the most digestible ingredient (p < 0. 05). Trial 2 showed that CE had the numerically highest DM degradability, but CP degradability was similar to RM. Camelina meal had a DM degradability similar to SM and RM and had an intermediate coefficient of CP degradability. In Trial 3, CE diet tended to present a higher true OM digestibility than SM diet (p = 0. 06). Total volatile fatty acids (VFA) was higher in CE and CM diets than in SM diet (p = 0. 009). Crude protein degradation tended to be higher (p = 0. 07), and dietary nitrogen flow tended to be lower (p = 0. 06) in CE diet than in CM diet. The efficiency of microbial protein synthesis was not affected by treatment (p > 0. 05). In conclusion, CE and CM as protein sources differ in CP coefficient of degradability but their results were similar to RM. More differences were detected with regard to SM.
Nota:	Funding: This research was funded by Spanish Ministry of Economy and Competitiveness and the European Regional Development Fund (Research Project RTC-2015-3265-5).
Nota:	Altres ajuts: FEDER/RTC-2015-3265-5
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 ; Protein sources ; Camelina co-products ; Rumen microbial fermentation
Publicat a:	Animals, Vol. 9 Núm. 12 (december 2019) , p. 1079, ISSN 2076-2615

DOI: 10.3390/ani9121079
PMID: 31817020

13 p, 597.8 KB

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