Effect of Italian heavy pig diets based on different barley varieties with or without non-starch polysaccharides degrading enzymes on growth performance, carcass characteristics and fresh thigh quality

Abstract

The effect of diets based on two different barley varieties, with or without non-starch polysaccharides (NSP) degrading enzymes was evaluated on growth performance, carcass characteristics and fresh thigh quality in Italian heavy growing-finishing pigs. Pigs (64) were assigned to four diets: two diets based on 85% of hulled normal-amylose barley (Cometa, with or without NSP enzyme complex) and two diets based on 85% of hulless low-amylose barley (Alamo, with or without NSP enzyme complex). The diets were formulated according to three growth phases with same lisyne:digestible energy ratio. The NSP enzyme complex did not improve the Cometa and Alamo diets in terms of pig growth performance, carcass characteristics and fresh thigh quality. Throughout the study, the Alamo group had greater (p < 0.05) final body weight, average daily gain and gain per megacalorie of digestible energy than the Cometa group. Higher (p < 0.05) carcass and thigh weights, and lower (p < 0.01) thigh chilling losses were observed for the Alamo group compared with the Cometa group. The Cometa diet decreased (p < 0.01) polyunsaturated fatty acids level, and increased (p < 0.01) monounsaturated fatty acid content and saturated fatty acids/polyunsaturated fatty acids ratio in subcutaneous fat of fresh thighs. No appreciable differences were observed in the color of subcutaneous fat and biceps femoris of pigs fed the Cometa and Alamo diets. Feeding hulless low-amylose barley to growing-finishing pigs can be valuable to promote growth performance and carcass characteristics. No NSP enzyme complex is needed when hulled normal-amylose barley or hulless low-amylose barley are used in diets for heavy pigs. ARTICLE HISTORY

Different carbohydrate sources affect swine performance and post-prandial glycaemic response

“…Doti et al (2014) reported similar results: these authors found in vitro comparable levels of resistant starch in a pig diet based on pea as starch source, compared to other experimental on cerealsbased diets. Previous studies (Prandini et al 2015(Prandini et al , 2016 reported that the starch sources rich in amylopectin and soluble starch increase the feed efficiency and growth performance in pigs. In some cereals and legumes, the starch granules have adjacent proteins in the endosperm, or sometimes indented in the starch surface, thus providing a continuous protein matrix, that plays as further barrier against amylase (Berg et al 2012).…”

Growth performance, nutrient digestibility, fecal microbial diversity and volatile fatty acid, and blood biochemical indices of suckling donkeys fed diets supplemented with multienzymes

“…This multienzyme preparation significantly improved the activities of related digestive enzymes in the intestines of these pigs and their growth performance [ 25 ]. Du et al found that compared with single enzyme preparations, compound enzyme preparations had a better effect on the growth performance of weaned piglets and the utilization rate of nitrogen and phosphorus [ 26 ]. Ai et al reported that NSP enzymes can inhibit the secretion of growth- and metabolism-related hormones.…”

Growth Performance, Nutrient Digestibility, Fecal Microbial Diversity and Volatile Fatty Acid, and Blood Biochemical Indices of Suckling Donkeys Fed Multienzyme-Supplemented Diets

“…The raw tags were quality-ltered under speci c ltering conditions to obtain high-quality clean tags [14] according to QIIME (Version 1.9.1) 2 [12] quality control process. Next, the tags were compared with the reference database (Silva database) 3 by using the UCHIME algorithm 4 to detect chimera sequences, which were then removed [15][16] . Then, the effective tags were nally obtained.…”

“…A compound enzyme preparation is composed of one or several single enzyme preparations as the main body, mixed with other single enzyme preparations, or obtained through fermentation by one or several microorganisms. Studies have shown that adding a compound enzyme preparation to the feed can supplement the lack of endogenous enzyme secretion, effectively reduce the level of antinutritional factors in feed, improve the feed nutritional value, and promote the healthy growth of animals [3][4][5] .…”