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The effects of a wool hydrolysate on short-chain fatty acid production and fecal microbial composition in the domestic cat (Felis catus)
Food & Function ( IF 6.1 ) Pub Date : 2018-07-10 , DOI: 10.1039/c7fo02004j
Santanu Deb-Choudhury 1, 2, 3 , Emma N. Bermingham 1, 2, 3 , Wayne Young 1, 2, 3, 4, 5 , Matthew P. G. Barnett 1, 2, 3, 4, 5 , Scott O. Knowles 1, 2, 3 , Duane Harland 1, 2, 3 , Stefan Clerens 1, 2, 3, 6, 7 , Jolon M. Dyer 1, 2, 3, 4, 5
Affiliation  

Novel animal-derived fibers are of interest for the pet food industry. We here introduce a method for extracting wool proteins using controlled hydrolysis of wool. This results in an appropriate form and we demonstrate its application in pet food using the domestic cat. The effect of the wool hydrolysate on biomarkers of digestive health (e.g., fecal short-chain fatty acids and fecal microbial composition, apparent amino acid (AA) and protein digestibility), are also described. In a feeding study, a cohort of cats (n = 8 per treatment) were fed a basal diet (Control), or the basal diet supplemented with 2% wool hydrolysate, 2% inulin (Synergy1; as is) or 2% cellulose (Novagel; as is). The concentration of butyric acid was not significant (P = 0.102) between treatment groups. The concentration of fecal lactic acid was greatest (P = 0.007) in cats on the Novagel diet. Valeric acid was increased (P = 0.001) in cats fed Synergy1. Supplementation of cat diet with a wool hydrolysate showed similarities to Novagel supplementation in terms of its effects on fecal short-chain fatty acid concentrations and fecal microbiota composition. Wool hydrolysate increased apparent cysteine digestibility compared to Synergy 1 or Novogel. In terms of fecal health, intake, and palatability, the diet supplemented with wool hydrolysate was not detrimental, being similar to currently used dietary fiber supplements. These findings indicate that wool hydrolysates offer promise as an animal-derived supplement source for pet diets.

中文翻译:

羊毛水解物对家猫(Felis catus)短链脂肪酸产生和粪便微生物组成的影响。

新颖的动物来源的纤维是宠物食品工业感兴趣的。我们在这里介绍一种利用羊毛的可控水解作用提取羊毛蛋白的方法。这样就形成了合适的形式,我们证明了它在使用家猫的宠物食品中的应用。还描述了羊毛水解物对消化健康的生物标志物(例如,粪便短链脂肪酸和粪便微生物组成,表观氨基酸(AA)和蛋白质消化率)的影响。在一项喂养研究中,向一组猫(每次治疗n = 8)喂养基础饮食(对照组),或基础饮食中补充2%的羊毛水解物,2%的菊粉(Synergy1;照原样)或2%的纤维素( Novagel;按原样)。丁酸浓度不显着(P= 0.102)。在Novagel饮食的猫中,粪便中乳酸的浓度最高(P = 0.007)。饲喂Synergy1的猫的戊酸增加(P = 0.001)。用羊毛水解物补充猫粮对粪便短链脂肪酸浓度和粪便微生物群组成的影响与Novagel补充相似。与Synergy 1或Novogel相比,羊毛水解物增加了明显的半胱氨酸消化率。就粪便健康,摄入量和适口性而言,补充有羊毛水解产物的饮食无害,类似于目前使用的膳食纤维补充剂。这些发现表明,羊毛水解物有望作为宠物饮食中动物来源的补充来源。
更新日期:2018-08-15
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