Dietary supplementation of sunflower oil and quebracho tannins in sheep feeding: in vivo nutrient digestibility, nitrogen utilization and in vitro ruminal degradation kinetics

Journal of the Science of Food and Agriculture
Hosam Em KamelAbdelfattah Zm Salem

Abstract

The effect of the inclusion of sunflower oil (SF) and quebracho tannin (QT) in a sheep diet was evaluated. Nutrient digestibility and nitrogen (N) utilization, as well as in vitro ruminal degradation kinetics, were evaluated at three levels [0, 20 and 40 g kg-1 of diet dry matter] of SF and QT in a 32 arrangement. The treatments were 0 (control); 20 and 40 g of QT and/or SF kg-1 of the diet. Four intact male sheep (45 ± 1.3 kg) for each treatment were used in the digestibility trial and kept individually in metabolic cages. Nutrient digestibility and N balance were not affected by SF. However, QT at 40 g kg-1 of dry matter decreased (P < 0.05) nutrient digestibility and also increased the proportion of absorbed N. Both SF and QT reduced (P < 0.05) the slowly degraded fraction and rate for organic matter and N. Even though the QT had a negative (P < 0.05) effect on nutrient digestibility, this effect was mild (P > 0.05) when SF was included in the QT-added diets. Moreover, an interaction (P < 0.05) of SF × QT was observed on the synchronization index as an indicator of the efficiency of rumen microbial protein synthesis. Supplementation of either SF or QT to sheep diets reduced ruminal organic matter and N degradability, reflect...Continue Reading

References

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Sep 8, 2001·Molecular Cell·V StambolicT W Mak
Nov 1, 1981·Applied and Environmental Microbiology·A E MaczulakD L Palmquist
Dec 8, 2016·Journal of the Science of Food and Agriculture·Einar Vargas-Bello-Pérez, Rafael E Larraín

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Citations

Mar 23, 2021·Frontiers in Veterinary Science·Luis O TedeschiSusanne U Mertens-Talcott
Jan 23, 2022·Tropical Animal Health and Production·Sthefany Kamile Dos SantosCristina Santos Sotomaior

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