Effect of feeding cassava bioethanol waste on nutrient intake, digestibility, and rumen fermentation in growing goats

Abstract

This experiment was conducted to investigate the effects of various levels of cassava bioethanol waste (CBW) on nutrient intake, digestibility, rumen fermentation, and blood metabolites in growing goats. Twelve crossbred, male (Thai Native × Anglo Nubian) growing goats with initial body weight (BW) of 20±3 kg were randomly assigned according to a completely randomized design (CRD). The dietary treatments were total mixed ration (TMR) containing various levels of CBW at 0, 10, and 20 % dry matter (DM). CBW contained crude protein (CP), neutral detergent fiber (NDF), acid detergent fiber (ADF), and acid detergent lignin (ADL) at 11, 69, 47, and 23 % DM, respectively. The TMR diets were offered ad libitum and contained CP at 15 % DM. Inclusion of CBW at 10 % DM in TMR did not alter feed intake (g DM and g/kg BW(0.75)) and CP intake when compared to the control fed group (0 % CBW). Total OM intake was lower in the 20 % CBW group than in the others (P < 0.01). The digestibility coefficients of DM, OM, CP, and NDF were not changed for the TMR including 10 % CBW compared to the control group (P > 0.05) whereas when 20 % CBW was incorporated to diet, intermediate digestibility coefficients were decreased. Average ruminal pH values ranged from 6-7. Rumen NH3-N and PUN concentration at 0, 3, and 6 h post-feeding were not significantly different among treatments (P > 0.05). Thus, inclusion of 10 % CBW in TMR diets does not adversely affect nutrient intake, digestibility, rumen fermentation, and blood metabolite in fattening goats, and CBW may be effectively used as an alternative roughage source in the diets of goats.

Partitioning of Proteins and Anti-Nutrients in Cassava (Manihot esculenta Crantz) Leaf Processing Fractions after Mechanical Extraction and Ultrafiltration

“…NDF (cellulose, hemicellulose, and lignin), ADF (lignin and cellulose), and ADL (lignin) are the different fiber fractions that define the quality of the feed product [57]. About 65-75% of the variable costs in animal production are directly linked to feeding costs [58]. After mechanical pressing, all three attributes were significantly (p < 0.05) higher in the press cake while the reverse was true for the juice fraction (Table 2).…”

Chemical composition and in vitro neutral detergent fibre digestibility of treated rice straw supplemented with pigeon pea (<i>Cajanus cajan</i>) hay

“…tation of rice straw with pigeon pea hay was found to have contributed to the enhanced dry matter digestibility (Ahmed et al, 2016;Ahmed et al, 2015;Pandey et al, 2007). The increase in dry matter digestibility of rice straw supplemented with pigeon pea hay is due to the hay's comparatively low fibre content and higher nitrogen content.…”

Kecernaan Protein Kasar dan Serat Kasar Kambing Peranakan Etawa Jantan yang diberi Pakan Fermentasi Ampas Tahu dan Bungkil Inti Sawit dengan Imbangan yang Berbeda

“…Hasil penelitian ini sejalan dengan penelitian Cherdthong et al (2016) yang menyatakan bahwa kecernaan protein kasar bioetanol singkong memiliki rataan 69%. Ditambahkan oleh Gabriel et al (2018) bahwa kecernaan protein kasar kulit singkong dalam pakan kambing yaitu 50,28%.…”