Different Quality Roughage Impacts the Productivity, Meat Quality Characteristics, and Fatty Acid Profile of Beef Cattle

Information from the abstract

The series of experiments had two objectives. First, to study fatty acids (FA) composition of Thai-Native cattle beef (NB), European crossbred cattle beef (EB), and Brahman crossbred cattle beef (BC) survey was conducted in local fresh markets in Northeast Thailand. Second, to investigate the effects of different quality roughage on productivity, meat quality, and FA profiles in beef cattle. Experiment 1 was conducted as a completely randomized design by collecting 96 beef samples: NB averaging 2 years old, 200–250 kg body weight (BW); BC, averaging 3 years old, 450 kg BW, and EB, averaging 3 years old, 550-650 kg BW. Experiment 2 grouped 20 Brahman x Native crossbred with 10 cattles in each of two groups using a Independent t-test. The 1st group received high level concentrate with rice straw (HCRS), and the 2nd group received low level concentrate with fresh grass (LCFG). Polyunsaturated FAs were higher in NB than in EB, whereas NB had lower n-6/n-3 FA proportions than BC and EB, respectively (P < 0.05). Cattle fed with HCRS or LCFG demonstrated no marked variations for performance or meat quality. Cattle fed on LCFG demonstrated increased n-3 FA contents in semimembranosus (SM), with decreased n-6/n-3 FA ratio for longissimus lumborum (LL) and SM. These results suggest that altering source of roughage to high-quality roughage by increasing the amount of n-3 in cattle diets results in increasing the amount of n-3 FA and decreasing the n-6/n-3 FA ratio in beef.

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Related topics: Ruminant Nutrition and Digestive Physiology · Meat and Animal Product Quality · Livestock Farming and Management