Dietary Supplementation of Lysophospholipids Affects Feed Digestion in Lambs

• Published in: Animals (Basel) Vol. 9; no. 10; p. 805
• Main Authors: Huo, Qin, Li, Bo, Cheng, Long, Wu, Tingting, You, Peihua, Shen, Shuanghua, Li, Yiyong, He, Yuhua, Tian, Wannian, Li, Rongquan, Li, Changsheng, Li, Jianping, Song, Baijun, Wang, Chunqing, Sun, Xuezhao
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 01.10.2019; MDPI
• Subjects: Acetic acid; Adaptation; Ammonia; Animal feeding and feeds; Animal growth; Animal lactation; Animals; Antibiotics; Bacteria; blood metabolite; Brucellosis; Cattle industry; Dairy cattle; Dairy products industry; Diet; Dietary supplements; Digestibility; Digestion; Dry matter; Experiments; Fatty acids; Feeds; Fermentation; Food and nutrition; Gram-positive bacteria; growth performance; Health aspects; Lambs; Legal fees; Lipase; lysophospholipid; Meat; Metabolites; Milk; Observations; Organic matter; pelleted complete feed; Phospholipids; Physiological aspects; Propionic acid; Relative abundance; Rumen; rumen function; Sheep; Studies; Triclabendazole; China
• ISSN: 2076-2615; 2076-2615
• DOI: 10.3390/ani9100805

Five experiments were conducted to examine effects of lysophospholipids (LPL) on live weight gain, nutrient digestibility, ruminal fermentation parameters, serum biochemical parameters and rumen bacterial community profile in fattening lambs. Two dietary treatments (pelleted complete feed supplemented without (control diet; CON) or with 0.05% LPL on dry matter basis) were tested in these experiments. Feed and water were provided ad libitum to lambs. The results showed that average daily gain (ADG) tended to increase or was not affected by LPL supplementation. Compared with CON, the supplementation of LPL resulted in an increase in dry matter, crude protein and organic matter digestibilities, and a decrease in neutral detergent fiber and acid detergent fiber digestibilities. Ruminal pH values did not change with LPL supplementation, but the concentrations of ammonia and total short chain fatty acids (SCFAs) were increased. The molar proportion of major individual SCFAs and the ratio of acetate to propionate were not affected by LPL supplementation. While the activity of lipase was decreased with LPL supplementation, all other serum biochemical parameters did not change. Rumen bacterial community was altered by LPL supplementation with the relative abundance of fibrolytic bacteria in the total bacterial population, such as Prevotella, decreased. In conclusion, LPL supplementation can alter feed digestion, but may not result in consistent positive responses in animal growth performance.