Performance, Carcass Quality and Fatty Acid Profile of Crossbred Wagyu Beef Steers Receiving Palm and/or Linseed Oil.

Chayapol Meeprom,Rattakorn Mirattanaphrai,Wisitiporn Suksombat

doi:10.5713/ajas.15.0546

Chayapol Meeprom, Rattakorn Mirattanaphrai + Show 1 more

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https://doi.org/10.5713/ajas.15.0546

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Abstract

The objective of this study was to determine the effect of palm and/or linseed oil (LSO) supplementation on carcass quality, sensory evaluation and fatty acid profile of beef from crossbred Wagyu beef steers. Twenty four fattening Wagyu crossbred beef steers (50% Wagyu), averaging 640±18 kg live weight (LW) and approximately 30 mo old, were stratified and randomly assigned in completely randomized design into 3 treatment groups. All steers were fed approximately 7 kg/d of 14% crude protein concentrate with ad libitum rice straw and had free access to clean water and were individually housed in a free-stall unit. The treatments were i) control concentrate plus 200 g/d of palm oil; ii) control concentrate plus 100 g/d of palm oil and 100 g/d of LSO, iii) control concentrate plus 200 g/d of LSO. This present study demonstrated that supplementation of LSO rich in C18:3n-3 did not influence feed intakes, LW changes, carcass and muscle characteristics, sensory and physical properties. LSO increased C18:3n-3, C22:6n-3, and n-3 polyunsaturated fatty acids (PUFA), however, it decreased C18:1t-11, C18:2n-6, cis-9, trans-11, and trans-10,cis-12 conjugated linoleic acids, n-6 PUFA and n-6:n-3 ratio in Longissimus dorsi and Semimembranosus muscles.

Highlights

The health benefits of α-linolenic acid (C18:3n-3) have become a leading topic for nutritional science research
linseed oil (LSO) had the highest proportion of PUFA (73.34 g/100 g fat) while PO had the highest proportion of saturated fatty acids (SFA) (44.05 g/100 g fat)
The main SFA was C12:0 (17.96 g/100 g fat) and C16:0 (17.85 g/100 g fat), whereas C18:1n-9 was the main MUFA in PO (40.61 g/100 g fat), C18:2n-6 was the main PUFA in 14% CP concentrate (20.33 g/100 g fat) and C18:3n-3 was the main PUFA in LSO (55.87 g/100 g fat) (Table 2)

Summary

Introduction

The health benefits of α-linolenic acid (C18:3n-3) have become a leading topic for nutritional science research. The long-chain polyunsaturated fatty acids (LC-PUFA), especially linoleic acid (C18:2n-6) and C18:3n-3 have anticarcinogenic and cardioprotective roles in humans (Parodi, 1997). Public health guidelines in most developed countries have recommended decreases in saturated and trans fatty acids and an increase in 18:3n-3, 20:5n-3, and 22:6n-3 in the human diet to reduce the incidence of chronic disease (World Health Organization, 2003). A reduction in the consumption of saturated fatty acids (SFA) and an increase in the consumption of polyunsaturated fatty acids (PUFA, fatty acids with more than one double bond) is encouraged, while monounsaturated fatty acids The main sources of supplementary fatty acids in ruminant rations are plant oils and oilseeds. Supplementation of plant oils and oilseeds rich in omega-3 fatty acids could increase omega-3 fatty acids in beef fat

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