Evaluation of performance and nutrient intake of lambs fed sugarcane hydrolyzed under different conditions (original) (raw)
Related papers
2014
Twenty-four Ile de France lambs, born in the same period, were used to evaluate performance and nutrient intake throughout the feedlot period (starting with 15 ± 0.221 until 32 ± 0.265 kg of body weight). Treatments were: IN (in natura sugarcane + concentrate), AER (sugarcane hydrolyzed using 0.6% calcium oxide (CaO) under aerobic condition + concentrate) and ANA (sugarcane hydrolyzed using 0.6% CaO under anaerobic condition + concentrate). The experimental design was completely randomized with eight replicates per treatment. Lambs were housed in individual pens and fed diet allowing 10% refusals. Lambs were weighed weekly to obtain the average daily weight gain and feed conversion. Nutrient intake was computed based on the amount of nutrients fed to the animals and the amount of nutrients of the refusals. Means were tested by Tukey HSD range test (P < 0.05). No difference was observed between treatments for performance, in which average daily weight gain was 0.241 kg and feed conversion was 3.99. Lambs fed sugarcane hydrolyzed under anaerobic condition had the highest mineral matter intake (69.97 g day-1) compared to other treatments. No differences for the other nutrient intakes were observed. Sugarcane hydrolyzed under aerobic and anaerobic conditions do not affect the performance neither the nutrient intake of the animals. The choice between supplying in natura or hydrolyzed sugarcane will depend on an economic analysis.
Ciência Rural, 2015
This study aimed to evaluate the digestibility and nitrogen balance (NB) of lambs fed sugarcane hydrolyzed under different conditions. Fifteen Ile de France lambs at, on average, 23.5kg of body weight were evaluated. Treatments were: in natura sugarcane (IN), sugarcane hydrolyzed using 0.6% calcium oxide (CaO) under aerobic condition (AER), and sugarcane hydrolyzed using 0.6% CaO under anaerobic condition (ANA). Therefore, a completely randomized design was constituted with five replicates per treatment. Treatments were supplied to animals along with concentrate. Both hydrolysis conditions aimed to alter the sugarcane fermentation pattern, therefore improving fiber digestibility. Lambs were housed in individual pens and fed with diet allowing 10% of refusals. Refusals, feces and urine were sampled daily during five days. They were collected to determine the digestibility and NB. A higher digestibility of neutral detergent fiber corrected for ash and protein (57.05%), organic matter ...
Revista Brasileira de Zootecnia, 2013
The objective of this study was to evaluate intake, performance and nutrient digestibility of sheep supplemented with sugarcane ensiled with four levels of calcium oxide (0.0, 0.8, 1.6 and 2.4%) and urea (1.5%), on a natural matter basis. Twenty castrated Santa Ines lambs with 24.09 kg average weight were housed in individual 1.5 m 2 pens, distributed in a completely randomized design. The diet supplied had a roughage:concentrate ratio of 70:30 and the experimental period lasted 77 days, of which 14 days were used for adaptation to the diet and three 21-day periods for data collection. No differences were observed for the average daily intake of dry matter, ether extract, neutral detergent fiber, neutral detergent fiber corrected for ash and protein, total carbohydrates, hemicellulose and total digestible nutrients. The treatment with urea showed differences for the intake (kg/day) of crude protein, acid detergent fiber and non-fibrous carbohydrates. There was no effect of diets on the digestibility of dry matter, ether extract, neutral detergent fiber, acid detergent fiber or total digestible nutrients, but there was a quadratic effect for total carbohydrates and increasing linear effect for non-fibrous carbohydrates. The calcium intake increased as the levels of calcium oxide in the sugarcane were elevated. The calcium:phosphorus ratio in the silage of calcium oxide was different from the silage with urea and control. No effect was observed for the performance characteristics of sheep. Sugarcane silages with calcium oxide levels of up to 2.4% or with urea do not improve the intake or weight gain of sheep.
Characteristics of forage and feeding behavior of Nellore heifers fed hydrolyzed sugarcane
Revista Brasileira de Zootecnia, 2012
The objective of this study was to evaluate the chemical characteristics of the forage and ingestive behavior of Nellore heifers fed hydrolyzed sugarcane in different periods of storage. Twenty-four heifers with initial body weight of 119.6±8.1 kg were utilized. The experimental design was completely randomized, in which the treatments were diets with fresh sugarcane and hydrolyzed sugarcane (5 g of lime kg -1 of chopped sugarcane) stored for 24, 48 or 72 hours as the only roughage. The addition of lime to sugarcane associated with its storage up to 72 hours provided an increase of 20% of the potentially degradable cell wall of carbohydrates, from 382.4 to 458.8 g kg -1 of total carbohydrates. The in vitro digestibility of dry matter was altered by the storage of hydrolyzed sugarcane, increasing 7.08% when the storage time was increased from 24 to 72 hours. Heifers fed fresh sugarcane remained more time consuming compared with heifers fed other diets. The time used for water intake was not influenced by the diet. The rumination time presented a quadratic variation in relation to storage time of the hydrolyzed sugarcane, with higher values for the of hydrolyzed sugarcane diets stored for 48 hours. Heifers fed hydrolyzed sugarcane spent more time on other activities than those fed fresh sugarcane. The supply of hydrolyzed sugarcane stored up to 72 hours in the proportion of 600 g kg -1 of dry matter in the diet, alters the intake patterns, reducing the feed intake in Nellore heifers.
Fifteen lambs fed ad libitum urea ammoniated sugarcane trash (USCT) as basal diet, the group fed ground maize grain (GMG) at maintenance level (T-1) as control, other groups fed with concentrate (CFM) for 50g gain (T-2), 100g gain (T-3), 150g gain (T-4) and for 200g gain (T-5) per day as per ICAR requirements to assess growth, intake and digestibility in lambs. The ADG and DMI improved linearly upto T-4; voluntary intake of USCT was around 2% of body weight. OM, CP, EE and NFE intake significantly increased with higher CFM intake and no significant difference with intake of CF, NDF, ADF, cellulose and hemicellulose. The digestibility of DM, OM, CP, EE and NFE increased significantly but didn't affect CF digestibility. Observed positive nitrogen balance in all groups. It is concluded that USCT with CFM supplements improved ADG, DMI and digestibility and lambs has potentiality to gain 100 g per day.
Intake and ingestive behavior in lambs fed low-digestibility forages
Tropical animal health and production, 2016
Ingestive behavior of lambs fed diets consisting of fresh sugarcane with urea, bagasse treated with calcium oxide, and urea ammoniated sugarcane bagasse supplemented with concentrate mixture in 50:50 ratio were evaluated. For this, 34 wethers Santa Inês in their growing phase, with an average age of 3.0 ± 0.6 months and a mean initial live weight of 17.8± 5.2 kg were used. The animals were distributed in a completely randomized design and subjected to visual observation periods of 5 days, for 24 h a day, during the experimental period. Dry matter (DM) intake and intake efficiency of DM were higher (P < 0.05) for animals receiving fresh sugarcane with urea. The animals which were fed with bagasse treated with calcium oxide had higher (P < 0.05) consumption of neutral detergent fiber, longer feeding and chewing time (P < 0.05), and shorter (P < 0.05) idling time. The time spent on chewing the ruminal bolus did not differ from one diet to the other (P > 0.05). Grams of d...