Intake and digestibility of silages containing pineapple pulp and coast-cross hay with or without urea and markers recovery in sheep

Abstract

-The objective of this study was to evaluate the intake and digestibility of silages containing pineapple pulp and coast-cross hay, with or without addition of urea, and the recovery of the markers chromium oxide (Cr 2 O 3 ), indigestible neutral detergent fiber (iNDF), indigestible acid detergent fiber (iADF), and indigestible dry matter (iDM), in a digestibility assay, in sheep. Treatments were as follows: two levels of pineapple pulp (818 and 758 g kg −1 ) and two levels of urea (with and without urea), in a completely randomized design. Twelve sheep (three per treatment) were used, kept in metabolic cages. Fecal excreta were determined by total collection or estimated by using the markers. Marker samples were obtained in morning and afternoon collections, with mean concentrations obtained for both daily activities. The level of silage pulp did not affect intake, while addition of urea increased the intake of crude protein (CP), but did not influence the intakes of dry matter, organic matter, neutral detergent fiber, or acid detergent fiber. The digestibility coefficients of all afore-mentioned fractions increased with the increase in pulp, the same happening with the addition of urea. The internal marker with lowest variability among the internal markers was iADF, with mean values near 100%. Mean recovery of Cr 2 O 3 was approximately 107%, but with lower variability among treatments. Inclusion of pineapple pulp in silage does not influence intake, while addition of urea only increases the intake of CP. The levels of pineapple pulp in silage with or without urea increase the digestibility of the silage. Indigestible acid detergent fiber is the marker with lowest variability of recovery, with mean recovery for the four silages used very close to 100%.

Feeding pineapple waste silage as roughage source improved the nutrient intakes, energy status and growth performances of growing Myanmar local cattle

“…Pineapple waste silage (PWS) is promising for ruminants to use as the roughage source [ 5 , 6 ]. The inclusion of pineapple waste in the ensiling of elephant grass improved the rumen degradability parameters [ 7 ] and digestibility of silage [ 8 ]. Feeding pineapple peel ensiled with bagasse and vinasse increased nutrient intake and average daily gain (ADG) of fattening Thai steers compared with feeding sweet corn husks and cob ensiled with bagasse and vinasse [ 9 ].…”

Use of indigestible markers to estimate the apparent dry matter digestibility of diets containing a cocoa by-product

“…Detmann et al (2004) reported that the lower concentrations of IADF in feed, leftover, and fecal samples relative to INDF provided a lower residual mass to be quantified in vitro, and systematic errors due to failure or lack of standardization of analytical methods were more representative. However, Alves et al (2016) found that the variability in FP was relatively lower using INDF. These authors also observed that the variability in the recovery of INDF and IDM was relatively greater and the recovery of CO was similar between the experimental diets, assuming that CO was not affected by different feeding conditions.…”

“…IMs are natural constituents of animal feed, including silica, acid-insoluble ash, lignin, fecal nitrogen, indigestible dry matter (IDM), indigestible neutral detergent fiber (INDF), and indigestible acid detergent fiber (IADF) (KOZLOSKI et al, 2009;LEE;HRISTOV, 2013;ALVES et al, 2016;MAGALHÃES et al, 2018). The results using known indicators may vary because of the adoption of different analytical techniques, partial fecal recovery rates, and different responses to diets, among other reasons, leading to precision errors in digestibility estimates.…”

Intake, total apparent digestibility, and microbial efficiency of sheep fed pineapple waste silage in different planes of nutrition

“…Nevertheless, the largest amount of pineapple crop waste matches the time of great availability of grazing fields with good nutritional value and relatively low cost, reducing dairy and meat producers' interest in using this feed resource in its fresh form. Therefore, there is a need to preserve this crop residue for times of feed scarcity (Alves et al, 2016). Fresh fruit byproducts, such as waste from fresh pineapple cannery, are rich in water (about 90%) and soluble carbohydrates (e.g., pectin) and decay quickly (Ososanya et al, 2014).…”