Ruminal Degradability and Summative Models Evaluation for Total Digestible Nutrients Prediction of Some Forages and Byproducts in Goats

Table 2

Means and standard errors of the in vitro true DM digestibility (IVTDMD) and in vitro NDF degradability (IVNDFD) at 48 and 72 h of incubation.

Feed	IVTDMD-48	IVTDMD-72	IVNDFD-48	IVNDFD-72
Discarded corn	77.4^cd	81.6^d	60.6^cd	67.9^c
Discarded sorghum	73.2^d	79.1^d	39.0^fg	52.5^d
Discarded sesame	68.1^e	70.3^e	4.8^h	9.5^e
Citrus pulp	94.9^a	96.6^a	80.5^a	86.9^a
Sugar cane, whole plant, 6 months	62.8^f	67.4^ef	41.8^fg	49.0^d
Forage sorghum	58.2^fg	65.5^f	39.3^fg	50.0^d
Bermudagrass	54.3^g	62.4^fg	41.4^fg	51.7^d
Brachiaria	51.4^g	59.1^g	36.9^g	46.8^d
King grass	54.7^g	62.2^fg	38.0^fg	48.3^d
Kikuyu grass	61.0^f	65.1^f	46.7^ef	52.4^d
Guinea grass	75.2^d	80.8^d	65.6^bc	73.4^bc
Stargrass, 20 days	80.8^c	85.9^c	72.8^ab	80.1^ab
Standard error	1.6	1.3	3.1	3.4

a,b,c,d,e,f,g, means within a column with different superscripts differ (P < 0.05).