Kröger S, Vahjen W, Zentek J
J Anim Sci. 2017 Apr;95(4):1598-1605. doi: 10.2527/jas.2016.0873.
Lignocellulose is an alternative fiber source for dogs; however, it has not yet been studied as a feed ingredient for the nutrition of dogs. Eight adult Beagles were involved in the study, which consisted of 3 feeding periods of 8 to 12 wk each. All dogs received 3 different diets, which either had the same concentration of fiber sources (2.7% sugar beet pulp or lignocellulose) or were formulated for a similar concentration of approximately 3% crude fiber: 12% sugar beet pulp (highSBP; 3.1% crude fiber), 2.7% sugar beet pulp (lowSBP; 0.96% crude fiber), or 2.7% lignocellulose (LC; 2.4% crude fiber). Feces samples were collected at the end of each feeding period, and the apparent nutrient digestibility, daily amount, and DM content of feces and fecal cell numbers of relevant bacteria were analyzed. The daily feces amount was lower and the feces DM was higher when dogs were fed the LC diet and the lowSBP diet compared with the highSBP diet ( < 0.001). Apparent digestibility of CP, Na, and K was highest with the lowSBP diet followed by the LC and highSBP diets ( < 0.001). After feeding LC, the bacterial cell counts of spp., spp., and the cluster were reduced compared with feeding highSBP and even more reduced after feeding lowSBP ( < 0.001). The bacterial cell count of the cluster was lower in LC and lowSBP compared with highSBP ( < 0.001). The feces of dogs fed LC and lowSBP had lower concentrations of acetate ( < 0.001), propionate ( < 0.001), -butyrate ( = 0.015), total fatty acids ( < 0.001), and lactate ( < 0.001) compared with dogs fed highSBP. The concentration of -butyrate was higher in the feces of dogs fed with LC compared with dogs fed high and low sugar beet pulp (SBP; < 0.001). The pH of the feces of the LC-fed dogs was highest followed by lowSBP- and highSBP-fed dogs ( < 0.001). Depending on the concentration, the use of LC and SBP as fiber sources in dog feed has different impacts on the fecal microbiota and the apparent digestibility of nutrients. Therefore, different areas of application should be considered.
木质纤维素是犬类的一种替代纤维来源；然而，它尚未作为犬类营养的饲料成分进行研究。八只成年比格犬参与了该研究，研究包括3个喂养期，每个喂养期为8至12周。所有犬只接受3种不同的日粮，这些日粮要么具有相同浓度的纤维来源（2.7%的甜菜粕或木质纤维素），要么配制为粗纤维浓度相似，约为3%：12%的甜菜粕（高SBP；3.1%的粗纤维）、2.7%的甜菜粕（低SBP；0.96%的粗纤维）或2.7%的木质纤维素（LC；2.4%的粗纤维）。在每个喂养期结束时收集粪便样本，并分析粪便的表观养分消化率、每日量、干物质含量以及相关细菌的粪便细胞数量。与高SBP日粮相比，当犬只饲喂LC日粮和低SBP日粮时，每日粪便量较低，粪便干物质较高（<0.001）。低SBP日粮的粗蛋白、钠和钾的表观消化率最高，其次是LC日粮和高SBP日粮（<0.001）。饲喂LC后，与饲喂高SBP相比，spp.、spp.和该菌群的细菌细胞计数减少，饲喂低SBP后减少得更多（<0.001）。与高SBP相比，LC和低SBP组中该菌群的细菌细胞计数较低（<0.001）。与饲喂高SBP的犬只相比，饲喂LC和低SBP的犬只粪便中乙酸盐（<0.001）、丙酸盐（<
