Bibliography
Effects of B-galactomannanase supplementation of diets, with high levels of copra meal on nutrient digestibility and performance of growing-finishing pigs [2010]
Bautista, C. M., Philippines Univ. Los Baños, College, Laguna (Philippines);
Access the full text
- NOT AVAILABLE
A study was conducted to determine the effects of B-galactomannanase supplementation of diets with high levels of copra meal on nutrient digestibility and performance of growing-finishing pigs. One hundred twenty pigs (Landrace x Large White x Duroc crossbreds) of similar age and weight were used in the study. Pigs were distributed to four treatment groups following a 2x2 factorial arrangement in CRD [completely randomized design]. Two factors involved were level of copra meal (20/25% in grower and 30/35% in finisher) and B-galactomannanase supplementation (with or without). Results of digestibility trial at grower stage showed no significant differences in CODsubDM [coefficient of digestibility of dry matter], CODsubCF [coefficient of digestibility of crude fat], CODsubEE [coefficient of digestibility of ether extract], CODsubGE [coefficient of digestibility of gross energy] and DE [digestible energy] among treatment. Increased copra meal level in the diet resulted into significantly decreased CODsubCP (P0.05). On the other hand, B-galactomannanase supplementation significantly increased CODsubCP (P0.05). Highest CODsubCP was observed in treatment with 20 percent copra meal plus B-galactomannanase. At finisher stage, significant interaction effect (P0.01) between copra meal level and B-galactomannanase supplementation was observed for CODsubEE. CODsubEE of finisher diet with 35 percent copra meal without B-galactomannanase supplementation was significantl
y lower compared to other treatments. Body weight gain, ADG, and feed efficiency at grower stage were significantly improved (P0.05) by B-galactomannanase supplementation. All growth parameter at finisher stage, livability at grower and finisher stages, and back fat thickness were not influenced by copra meal level and B-galactomannanase supplementation. Likewise ADG [average daily gain], ADFC [average daily feed consumption], and FE [feed efficiency] from grower to finisher stage were not significantly affected by copra meal level and B-galactomannanase supplementation. Mucusal thickness, length of villi, and crypt depth were not affected by the level of copra meal and B-galactomannanase supplementation in the diet. However, B-galactomannanase supplementation had significant effect on width of villi (P0.05). Regardless of copra meal level, B-galactomannanase resulted in an increased villi width. Highest income over feed and pig cost (IOFPC) was attained from sales of pigs fed grower and finisher diets with 20 and 30 percent copra meal, respectively, plus B-galactomannanase. IOFPC increased by approximately 41 percent due to B-galactomannanase supplementation.
