Effects of Supplementation of Mixed Cassava (Manihot esculenta) and Legume (Phaseolus calcaratus) Fodder on the Rumen Degradability and Performance of Growing Cattle

Autor:	H. Wiktorsson, C. M. Thang, M. V. Sanh
Rok vydání:	2008
Předmět:	Rumen biology Agronomy Fodder Animal Science and Zoology Dry matter Pennisetum purpureum Phaseolus biology.organism_classification Feed conversion ratio Completely randomized design Legume Food Science
Zdroj:	Asian-Australasian Journal of Animal Sciences. 21:66-74
ISSN:	1976-5517 1011-2367
DOI:	10.5713/ajas.2008.60487
Popis:	Two experiments were conducted to assess the effect of replacing a conventional concentrate with mixed cassava Two experiments were conducted to assess the effect of replacing a convetional concentrate with mixed cassava (Manihot esculenta) foliage and legume (Phaseolus calcaratus) foliage. In Exp. 1, three rumen fistulated crossbred cows were used for in sacco rumen degradability studies. In vitro gas production was also studied. In Exp. 2, 11 crossbred F2 heifers (Red SindhixHolstein Friesian), with initial live weight of 129±6 kg and aged six months, were allocated in a Completely Randomized Design (CRD) to evaluate a mixture (ratio 3:1) of cassava and legume foliage (CA-LE feed) as a protein source compared to a traditional concentrate feed (Control) in diets based on fresh elephant grass (Pennisetum purpureum) and urea treated rice straw ad libitum. The Control feed was replaced by the CA-LE feed at levels of 0% (Control), 40% (CA-LE40), and 60% (CA-LE60) based on dry matter (DM). The in sacco degradation of CA-LE feed was higher than Control feed (p 0.05), but live weight gains (LWG) in CA-LE40 and CA-LE60 were significantly higher (551 and 609 g/d, respectively) than in the Control group (281 g/d). The intake of CP was higher (p
Databáze:	OpenAIRE
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