Influence of S. babylonica extract on feed intake, growth performance and diet in vitro gas production profile in young lambs

Abstract

An experiment was completed to determine the effect of Salix babylonica (SB) extract supplementation to the diet of growing lambs. Eighteen Katahdin × Pelibuey male lambs (14 ± 2 kg live body weight) were divided randomly in individual cages into three groups and fed three diets varying in SB: a control group was fed on total mixed ration (TMR) without SB (SB0), an SB25 group was fed on TMR plus SB extract at 25 mL/lamb/day, and an SB50 group was fed on TMR plus SB extract at 50 mL/lamb/day on dry matter intake (DMI), average daily gain (ADG), feed efficiency, and in vitro gas production (GP) in lambs fed on TMR. In vitro GP of the TMR fed to lambs was recorded at 2, 4, 6, 8, 10, 12, 24, 48, and 72 h of incubation with 0, 0.6, 1.2, and 1.8 mL extract per gram of DM. Addition of SB extract at low and high doses improved the DMI of lambs by 59.9 and 33.2 %, respectively. Relative to the control, low and high extract doses achieved greater lamb ADG during the experimental period. The asymptotic GP increased (P < 0.05) with increasing dose of SB extract without affecting the rate of GP or the initial delay before GP begins. Linear increases for in vitro GP with advancing time with different SB extract doses were observed. It is suggested that the use of S. babylonica extract with the rate of 25 mL/lamb/day is beneficial to young lamb’s performance growth and thus can be safely used as a feed additive in diets without any negative effects on animal health.

Influence of Live Cells or Cells Extract ofSaccharomyces Cerevisiaeonin VitroGas Production of a Total Mixed Ration

“…For this reason, there is substantial interest to evaluate the potential of using natural feed additives, generally recognized as safe for human consumption, to modify rumen microbial fermentation and improve feed utilization (Chaucheyras-Durand et al, 2008). Phytogenic extracts (Salem et al, 2014b;Cedillo et al, 2014Cedillo et al, , 2015, fibrolytic enzymes (Togtokhbayar et al, 2015;Valdes et al, 2015) and yeast (Elghandour et al, 2014) proved to be good strategies to modulate ruminal fermentation for better feed utilization. Yeast Saccharomyces cerevisiae, live cells (LC) or cells extract (CE) are generally recognised as safe by the US Food and Drug Administration, and they can be legally used as animal feed additives (Kwiatkowski and Kwiatkowski, 2012).…”

Effects of Different Doses of Salix Babylonica Extract on Growth Performance and Diet in Vitro Gas Production in Pelibuey Growing Lambs

“…For this reason, ruminant microbiologists and nutritionists have to explore alternative methods of favourably altering ruminal metabolism to improve feed efficiency and animal productivity, including the use of yeasts, organic acids, plant extracts, probiotics, and antibodies (Calsamiglia et al, 2007;Elghandour et al, 2014). Accordingly, plant extracts contain specific secondary metabolites that give them potential alternatives as feed additives to manipulate rumen microbial population's activity (Jiménez-Peralta et al, 2011;Salem, 2012;Salem et al, 2014b). Plant secondary metabolites in Salix babylonica (SB) extract (Jiménez-Peralta et al, 2011;Salem et al, 2011Salem et al, , 2014b or in herbs such as organic acids and essential oils (Hernández et al, 2004) seem to be alternatives to replace chemical feed additives (Patra et al, 2006;Jiménez-Peralta et al, 2011).…”

“…A combination of positive impacts of secondary metabolites on ruminal microorganism activity (Jiménez-Peralta et al, 2011;Salem et al, 2014b), nutrient digestion (Mapiye et al, 2010;Salem et al, 2011Salem et al, , 2014b increased supply of amino acid to the duodenum (Mueller-Harvey, 2006), and microbial protein production. This could improve and increase muscle deposition as well as carcasses weights and meat quality (Gleghorn et al, 2004;Mapiye et al, 2010).…”

Influence of dietary supplementation with sunflower oil and quebracho tannins on growth performance and meat fatty acid profile of Awassi lambs

“…Consequently, tannins have been suggested to be suitable feed additives towards improving the digestive utilization of dietary protein (Hernandez et al, 2014;Salem et al, 2014). Nevertheless, tannins may also cause negative effects like reduction of ruminal degradation of organic matter (OM) or decreasing fiber and dry matter (DM) digestion when supplied at 30 rather than at 10 and 20 g tannins/kg DM (Al-Dobaib, 2009;Ammar et al, 2011;Salem et al, 2013).…”