Digestibility of diets contained imported and local concentrates with chromium oxide and lignin as markers in the Turkmen horses

Document Type : Research Paper

Authors

1 MSc. Graduated student, Animal Science Department, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran

2 Associate Professor, Department, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran

3 Professor, Animal Science Research Institute of Iran, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran

Abstract

The aim of this research was to compare the digestibility of two concentrates with chromium oxide (Cr2O3) and lignin as markers in the Turkmen horses. In a completely randomised experiment 16 Turkmen horses, weighting 433 ±50 kg and aged 8 ±3 years were used. The treatments were a control diet (Tc) contained 25 percent of imported concentrate and three diets contained 20, 25 and 30 percent of local concentrate, T1, T2 and T3 respectively. The trial was carried out for a period of 28 days, started with 21 days of adaptation period and 7 days sampling and data collection. When Cr2O3 marker was used, the digestibility of OM (547 vs. 506), CP (545 vs. 527) and NDF (427 vs. 309) were higher (P< 0.05) in T2 in comparison to those in Tc diet. Increasing of concentrate level in the diets improved the nutrients digestibility (P< 0.05). The digestibility of CP was significant between two markers. In conclusion, a part from the digestibility of EE, the 25 or 30 percent level of local concentrate increased the nutrients digestibility in comparison to those fed imported concentrate. Additionally, lignin could be used as an internal marker for digestibility determination in horse fed diet contained at least 70 percent forage.

Keywords


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