- Turkish Journal of Veterinary and Animal Sciences
- Vol: 43 Issue: 6
- The effect of tannin extract and n-3 fatty acid source on nutrient digestibility, blood metabolites,...
The effect of tannin extract and n-3 fatty acid source on nutrient digestibility, blood metabolites, enzyme activity, and ruminal parameters of lactating ewes
Authors : Roghayeh Valizadeh Yonjalli, Farzad Mirzaei Aghjehgheshlagh, Ali Mahdavi, Bahman Navidshad, Hamid Staji
Pages : 724-732
View : 6 | Download : 3
Publication Date : 9999-12-31
Article Type : Makaleler
Abstract :This study aimed to evaluate the effects of tannin extract and n-3 fatty acid supplementation on nutrient digestibility, ruminal parameters, blood metabolites, and enzyme activity in lactating ewes. Thirty-six lactating ewes were allocated to 6 experimental groups. The dietary treatments were as follows: 1) control, 2) diet supplemented with 2% dry matter (DM) oak leaf tannin extract, 3) diet supplemented with 2% DM grape pomace tannin extract, 4) diet supplemented with 2% DM linseed oil, 5) diet supplemented with 2% DM oak leaf tannin extract and 2% DM linseed oil, and 6) diet supplemented with 2% DM grape pomace tannin extract and 2% DM linseed oil. The results showed the significant effects of treatments on final body weight, digestibility, and some blood metabolites (P < 0.05). Therefore, the treatment groups had higher final body weight, better nutrient digestibility, and higher values of blood parameters. In conclusion, our results showed that the dietary tannin extract and the n-3 fatty acid source improved nutrient digestibility and blood metabolites, and they had a trend of improving the ruminal volatile fatty acid profile while not having any adverse effects on the animals' performance.Keywords : Grape pomace, linseed oil, oak leaves, lactating ewe