Leaves from tropical trees as protein supplements in diets for sheep

Authors

  • R.O. Wiegand University of Wisconsin-Madison Departments of Dairy Science, and Meat & Animal Science, Madison, WI, U.S.A.
  • J.D. Reed University of Wisconsin-Madison Departments of Dairy Science, and Meat & Animal Science, Madison, WI, U.S.A.
  • D.K. Combs University of Wisconsin-Madison Departments of Dairy Science, and Meat & Animal Science, Madison, WI, U.S.A.
  • A.N. Said International Livestock Centre for Africa, Addis Ababa, Ethiopia

Keywords:

Phenolic compounds, Proanthocyanidins, Intake, Rate of gain, Nitrogen balance

Abstract

The effect of forage supplement and level of maize grain (Zea mays L.) offered on intake digestibility, N balance, and rate of gain were determined for rams fed teff straw (Eragrostis; abyssinica). Supplements (leaves from five trees, Faidherbia albida, Carissa edulis Dichrostachys cinerea, Leucaena leucocephala, and Sesbania sesban, or chopped alfalfa hay: Medicago sativa) provided 40 g per day of crude protein. Maize grain was supplemented to half of the sheep t 100 g per day. Ram fed leaves of F. albida, L. leucocephala, S. sesban, and the alfalfa hay gained 49 g per day with maize and 23 g per day without maize. Higher content of proanthocyanidins and related polyphenols in F. albida had no detrimental effect on N balance and rate of gain (P<0.05) in comparison to alfalfa. The high content of proanthocyanidins and related polyphenols in C. edulis and D. cinerea resulted in low intake, digestibility, and rate of gain (6 g day-1) when fed with maize, and high weight loss (-63 g day-1) without maize.

Issue

Section

Research Papers