Effects of dietary soyabean, rapeseed and linseed oils on performance, slaughter yield and fatty acid profile of breast meat in turkeys
Journal Title: Journal of Animal and Feed Sciences - Year 2012, Vol 21, Issue 1
Abstract
iets with different vegetable oils, i.e. soyabean (S) oil, rapeseed (R) oil and linseed (L) oil, which have different concentrations of polyunsaturated fatty acids (PUFA). The total contents of n-6 PUFA and n-3 PUFA were as follows: diet S, 49.7 and 7.02%, diet R, 33.0 and 7.96%, and diet L, 30.3 and 30.6%; the n-6/n-3 PUFA ratio was 7.3, 4.4 and 1.0, respectively. The experimental materials comprised four groups of turkey hens (14 replications of fifteen birds each). The amount of dietary oil supplementation was increased from 2% in the first four weeks to 6% at the final stage of fattening (14-15 weeks). The apparent total tract digestibility of crude fat in 7-week-old turkeys (2.5% oil in diet) ranged from 89.9 to 91.1%, and showed no statistically significant differences. Dressing percentage, breast, thigh, and drumstick muscle contents did not differ among groups. Group L had a significantly higher intestinal fat weight (0.84% body weight (BW)) than the other groups (0.60-0.62%). In comparison with diet S, diets R and L contributed to a significant decrease in the levels of saturated fatty acids (from 32.9% to 30.3 and 30.2%) in breast meat lipids. In group L turkeys, the share of PUFA in total fatty acids in breast meat lipids was significantly higher (37.3% vs 29.4 and 27.1% in groups S and R, respectively), and the n-6/n-3 PUFA ratio was significantly lower (1.2 vs 5.6 and 5.1). As for the performance indices (final BW, feed conversion ratio), both rapeseed and linseed oils could be recognized as comparable alternatives to soyabeen oil (in both cases P>0.05 vs S group). However, the highest final BW followed the dietary treatment with linseed oil (P<0.05 vs group R).
Authors and Affiliations
J. Jankowski, P. Zduńczyk, D. Mikulski, M. Mikulska, Z. Zduńczyk
Keywords
Related Articles
- EP ID EP76017
- DOI -
- Views 105
- Downloads 0
The quality of different mono- and dicalcium phosphates estimated on the basis of their crystalline phases, chemical composition, solubility, and biological parameters of broiler chickens
The quality of five commercial monocalcium phosphates (MCP) and dicalcium phosphates with natural admixtures of hydrated and dehydrated forms was assessed on the basis of their crystalline phases determined by roentgenog...
The effect of dietary fat, vitamin E and selenium concentrations on the fatty acid profile and oxidative stability of frozen stored broiler meat
A total of 160 Ross 308 female broilers from day 22 to 35 of age were used to investigate the effects of vitamin E and selenium (Se) supplementation on performance, fatty acid profile and oxidative stability of meat enri...
Chemical composition, antioxidant activity and bioactive compounds of vegetation species ingested by goats on semiarid rangelands
The first goal of this study was to evaluate the chemical composition of vegetation consumed by goats on semiarid rangelands. Secondly, antioxidant activity and identified bioactive compounds of this vegetation were esti...
Evolution of gonadotropin-releasing hormone (GnRH) structure and its receptor
It is evident now that the gonadotropin-releasing hormone (GnRH) structure was already in existence very early in the evolution of animals and was co-opted in diverse ways to regulate reproduction. During 600 million yea...
The effects of combined essential oils along with fumarate on rumen fermentation and methane production in vitro
Two trials were conducted to investigate the effect of a combination of essential oils (CEO) along with fumarate on in vitro rumen fermentation. In trial 1, the essential oil (EO) from thyme, oregano, cinnamon and lemon...