Sammanfattning

Sixteen Swedish Red steers were fed a hempseed cake (HC) or soybean meal (SM) protein supplement. Lipid extract from fresh and cooked M. longissimus dorsi were analysed. Diet comparison showed that HC had increased monounsaturated fatty acid proportion, primarily 18:1 cis-9 in the meat (P<0.05). Additionally, HC steers had higher proportions of 18:1 trans-11 and 18:2 c-9, t-11 (P<0.05). Furthermore, HC steers had decreased n-6/n-3 fatty acid ratio compared to SM steers (P<0.05). Cooking increased polyunsaturated fatty acid (PUFA) and n-6 level, particularly 18:2n-6 and 20:4n-6 (P<0.05). Cooking decreased the proportion of 17:0 and 18:0 (P<0.05). In polar lipid, HC steers had lower saturated fatty acid (P<0.05) and higher PUFA levels (P<0.05). Warner-Bratzler shear force and lipid content were unaffected by dietary treatment. Cooking decreased the triacylglycerol level of both groups (P<0.01). We conclude that HC is a viable alternate supplement for beef diets which improves the meat FA profile.

Nyckelord

Beef; fatty acids; hempseed cake; omega-3; phospholipids; soybean meal; triacylglycerols

Publicerad i

Acta Agriculturae Scandinavica, Section A - Animal Science
2008, Volym: 58, nummer: 3, sidor: 152-160
Utgivare: TAYLOR & FRANCIS AS

SLU författare

• Turner, Tyler

  • Institutionen för molekylära vetenskaper, Sveriges lantbruksuniversitet
    

• Hessle, Anna

  • Institutionen för tillämpad husdjursvetenskap och välfärd, Sveriges lantbruksuniversitet
    

• Lundström, Kerstin

  • Institutionen för molekylära vetenskaper, Sveriges lantbruksuniversitet
    

• Pickova, Jana

  • Institutionen för molekylära vetenskaper, Sveriges lantbruksuniversitet
    

UKÄ forskningsämne

Husdjursvetenskap
Veterinärmedicin


Publikationens identifierare

DOI: https://doi.org/10.1080/09064700802492354

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/19537