NUTRIENTS AND ANTI-NUTRIENTS CONTENT OF SOME CROP BY-PRODUCTS AND RESIDUES FOR RUMINANT FEEDING IN NIGERIA

Authors

  • Yusuf, K. O. Department of Animal Nutrition, College of Animal Science and Livestock Production, Federal University of Agriculture, Abeokuta, Nigeria
  • Ajeigbe, O. M.
  • Oyebo, A. T.
  • Aderinboye, R. Y.
  • Onwuka C. F. I.  

Keywords:

Nutritive value, phytochemical screening, crop residues, crop by-products, ruminants

Abstract

This study examined the chemical composition and anti-nutritional content of crop residues: Groundnut haulms, garden egg haulms, maize husks, maize stover, sweet potatoes vines, cowpea haulms and crop by –products (yam peel, potatoes peel, cowpea husk and groundnut husk, maize cob, plantain peels, bread fruit peels, orange peels). The proximate composition, fibre, minerals and anti- nutrient composition were determined using standard procedures. All the samples assessed were significantly different (P<0.05) from one another in their content of nutrients and anti-nutrients. Dry matter was highest in groundnut haulms (97.22%) and lowest in maize cob (81.25%). Cowpea haulms had highest crude protein (12.36%) while maize cob had the least (3.92%). Crude fibre was highest in maize cob (34.00%) and lowest in breadfruit peels (9.00%). The crop residues and by-product evaluated are rich in various minerals. The highest Ca content (78.81 mg/100g) was recorded in cowpea haulms and the lowest (3.03 mg/100g) in yam peels. The phytochemical screening revealed the presence of tannin, alkaloids, saponin, phenol, phytate, oxalate, steroids and trypsin inhibitor. It is worth-noting that breadfruit peels had the highest content of five out of eight anti-nutritional factors determined. The crop residues and by-products were rich in essential nutrients and most of them were low in anti-nutritional factors, hence can be used as alternative feed for ruminant animals.

Published

2017-06-30