IMPROVEMENT OF CASSAVA PULP NUTRIENTS BY YEAST FERMENTATION WITH CHICKEN MANURE AND ITS EFFICACY ON DIGESTIBILITY, HAEMATOLOGICAL PARAMETERS AND GROWTH PERFORMANCE OF BARROW PIGS

Abstract

ABSTRACT

One of the constraints of animal production is feed availability and cost. The aim of this research was to investigate the use of chicken manure (CM) as a nitrogen source to Saccharomyces cerevisiae yeast fermentation of cassava pulp and its efficacy on nutrient digestibility, haematological parameters, and growth performance of barrow pigs. Four fermentation experiments of cassava pulp were conducted in different treatment conditions and fermentation times in order to improve the nutrient status of cassava pulp. The results showed that the yeast fermented cassava pulp with chicken manure (YFCP) had crude protein increase from 1.99% of the plain cassava pulp to 8.54% in YFCP (p < 0.05), while the crude fibre of YFCP decreased from 15.63 to 13.85%. The best improvement of YFCP was used in the formulation of diets as a replacement of maize at 4 levels (0%, 5%, 10%, and 15%). Twenty-four castrated male pigs (57.13 ± 3.29 kgs bodyweight) were separated into 4 groups, with 6 pigs for each group. The results revealed that the nutrient digestibility was significantly different (p < 0.05) among groups. The control diet (0%YFCP) had the greatest digestibility percentages in all categories included dry matter, crude protein, crude fibre, gross energy, and total phosphorus. Among YFCP replacement diets, the 15%YFCP generally demonstrated a greater digestibility. The results of the feeding trial showed that there was no significant difference (p > 0.05) in feed intake, weight gain, feed conversion ratio, and haematological parameters among the four treatment diets. The haematological results showed that all parameters fall under normal ranges of haematological pigs’ references. In conclusion, the results confirmed that YFCP can be used in replacement up to 15% in maize-soybean pig diets without any harmful effects.

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