Consumo, digestibilidade aparente dos nutrientes e comportamento ingestivo de bovinos da raça Holandesa alimentados com dietas contendo feno de capim-tifton 85 com diversos tamanhos de partícula

Pereira, Elzânia Sales; Mizubuti, Ivone Yurika; Ribeiro, Edson Luís de Azambuja; Villarroel, Arturo Bernardo Selaive; Pimentel, Patrícia Guimarães

doi:10.1590/s1516-35982009000100023

Cited by 16 publications

(12 citation statements)

References 14 publications

(9 reference statements)

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“…Other correlations were also significant; rumination time with efficiency of dry matter rumination (r = -0.82) and neutral detergent fiber (r = -0.55), showing that the increase in rumination time negatively influenced the rumination efficiency. The results of the present study were in line with those presented in the literature (Bürger et al, 2000;Pereira et al, 2009;Missio et al, 2010) for the same animal category, where the authors reported variation from 4.23 to 8.96 hours/day, which was a reflection of the quantity of roughage used in the diets, the size of the roughage particle and the diet composition.…”

Section: Resultssupporting

confidence: 93%

Feeding behaviors of feedlot bulls fed concentrate levels and babassu mesocarp meal

et al. 2012

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-The objective of the present study was to evaluate the feeding behavior of feedlot Nellore bulls fed two levels of concentrate (650 and 710 g/kg dry matter) with or without the inclusion of 350 g babassu mesocarp meal/kg dry matter in the concentrate. Twenty-eight animals at 18 months of initial age and 356.66±19.25 kg initial body weight were used. A completely randomized design was used with treatments in a 2 × 2 factorial arrangement. Increase in concentrate level from 650 to 710 g/kg dry matter did not change the feeding time, of 194.41 and 189.64 minutes/day, respectively.The inclusion of 350 g babassu mesocarp meal/kg dry matter in the concentrate increased the feeding time from 173.92 to 210.12 minutes/day, ensuring similar energy intake in relation to the diets without this byproduct. Rumination time was not changed by increasing the concentrate level in diets with 350 g babassu mesocarp meal/kg dry matter in the concentrate, with average values of 420.48 and 398.09 minutes/day for the levels of 650 and 710 g concentrate/kg dry matter, respectively. However, in diets without babassu mesocarp meal, the rumination time was reduced by the concentrate level, with average values of 452.14 and 409.76 minutes/day for 650 and 710 g of concentrate/kg dry matter, respectively. Time spent on other activities increased from 810.23 to 860.00 minutes/day with increase in the concentrate level, which was not changed in the diets containing babassu mesocarp meal. The inclusion of babassu mesocarp meal in the diet altered the feeding behavior of feedlot cattle, due to the need to increase the feeding time to maintain the energy intake.

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Section: Resultssupporting

confidence: 93%

Feeding behaviors of feedlot bulls fed concentrate levels and babassu mesocarp meal

et al. 2012

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“…The sum of periods 1 and 2 corresponded to the longer time spent on consumption (82.21% of total consumption), so the consumption was concentrated during the day. These observations were also registered by Pereira et al (2009), Dado and Allen (1995), and Macedo et al (2007), who obtained an average of 57% of time spent feeding adding the periods 1 and 2. Dado and Allen (1995) reported that DMI is increased after feeding, when feed is still fresh.…”

Section: Ingestive Behaviourmentioning

confidence: 65%

Intake and feeding behaviour of Morada Nova lambs fed different energy levels

Camilo

Pereira

Pimentel

et al. 2012

Italian Journal of Animal Science

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The effects of metabolizable energy levels were evaluated on nutrient intake and ingestive behaviour in Morada Nova lambs. Forty Morada Nova lambs were used with an initial weight of 12.2±2.05 kg. Five treatments were defined according to the metabolizable energy levels (0.96, 1.28, 1.72, 2.18 and 2.62 Mcal/kg DM). The experimental model was a randomized block design. Linear effect (P<0.0001) of ME levels was determined for dry matter intake (DMI), organic matter (OM), crude protein (CP), total carbohydrates (TC), non-fibrous carbohydrates (NFC) and total digestible nutrients (TDN) in g/day. Quadratic effect was determined for NDF (P<0.017) and carbohydrate intake (P<0.003). Linear effect was determined for digestibility of DM, OM, NDF, TC and NFC. Eating, ruminating and total chewing times, expressed in hours/day, decreased linearly (P<0.0001) with the energy levels of experimental diets. Idle time increased linearly (P<0.0001) with the increase of energy levels of the rations. Feeding and rumination efficiencies were influenced by the energy levels (P<0.0001) when expressed in g DM/h. The number of ruminal boluses, number of chews and chews per ruminal bolus were not affected by the levels of ME. However, time spent chewing per ruminal bolus was influenced (P<0.0014). Increase in ME levels of diets influences nutrient intake and feeding behaviour of Morada Nova lambs during the growing period

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“…When feed reaches the digestive tract, the intake rate limits consumption, depending mainly on the physical, mechanical, and nutritional quality of the feed. Between meals, feed is processed by the animal at a rate dependent on the area of the digestive tract, the level of enzymatic activity, bacterial load, and feed quality, and this processing rate is often the primary factor limiting food intake (BROOM; FRASER, 2010;PEREIRA et al, 2009;VAN SOEST, 1994).…”

Section: Resultsmentioning

confidence: 99%

Ingestive behavior of sheep fed Brazil nut cake in the diet

Ramos

Pinho

Júnior

et al. 2016

SCA

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This study evaluated the ingestive behavior of sheep when fed a corn-silage-based diet with varying levels (0%, 15%, 30%, and 60%) of Brazil nut cake (NC) (Bertholletia excelsa Bonpl.). Sixteen mongrel sheep with an average weight of 33 ± 6.04 kg were randomly distributed between four treatments. Data were tested for assumptions of normality, subjected to an analysis of variance, and adjusted in regression equations and by Williams' test, to estimate the W point. The voluntary intake of dry matter (DM) and insoluble neutral detergent fiber (NDF) decreased linearly (P = 0.013 and P = 0.002) by 5.0 g and 2.41 g d -1 , respectively, for every 1% of NC added to the diet. The time the animals spent feeding (288.75 min d -1 ) was not significantly affected; time spent idle increased linearly (P= 0.0002) by 3.10 min, and time spent during rumination decreased linearly by 2.62 min (P = 0.001) for each 1% addition of the co-product. The number of ruminated boluses (NRB) displayed a decreasing effect (P = 0.004) of 4.61 d -1 for each 1% of NC. For ruminating chews, the time spent per bolus (37.5 sec) and the number per bolus (56.14) did not differ (P > 0.05) between treatments. However, the total chewing time (TCT) decreased linearly (P = 0.002) by 0.05 h d -1 and the number of chews per day displayed a quadratic effect (P = 0.008), with a maximum value estimated at 17.5% of NC in the diet. Rumination efficiency did not differ between the treatments (101.95 g DM h -1 and 36.76 g NDF h -1 ). The feeding efficiency (FE) had a linear reduction (P = 0.045) of 0.42 g NDF h -1 , but was similar for g DM h -1 (172.5). The daily intake of DM and NDF showed W points estimated at 51.96% and 30.67% NC, respectively. The variables NRB, TCT, and FE (g NDF h -1 ) had W points estimated at 56.64%, 56.19%, and 56.33% NC, respectively. The Brazil nut cake, when present at levels greater than 56% of the diet's DM, affects the ingestive behavior of the animals, particularly rumination-related variables, and at levels of 30.67%, it begins to affect the consumption of NDF, primarily due to the ether extract content and the diet's fiber source. ResumoAvaliou-se o comportamento ingestivo de ovinos alimentados com níveis de inclusão (0, 15, 30 e 60%) de torta de castanha-do-pará (TC) (Bertholletia excelsa Bonpl.), na dieta à base de silagem de milho. Foram utilizados 16 cordeiros, sem raça definida e peso médio de 33 ± 6.04 kg, distribuídos aleatoriamente nos quatro tratamentos. Os dados foram analisados quanto à normalidade, submetidos à análise de variância, ajustados em equações de regressão e ao teste de Williams, estimando-se o ponto W. Os consumos voluntários de matéria seca (MS) e fibra insolúvel em detergente neutro (FDN), reduziram linearmente (P=0,013 e P=0,002) em 5,0 g e 2,41 g dia -1 , respectivamente, para cada 1% de TC inclusa na dieta. O tempo despendido em alimentação (288,75 min dia -1 ) não foi afetado significativamente, o tempo em ócio cresceu linearmente (P=0,002) em 3,10 minutos, e o tempo gasto em ruminação decre...

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Consumo, digestibilidade aparente dos nutrientes e comportamento ingestivo de bovinos da raça Holandesa alimentados com dietas contendo feno de capim-tifton 85 com diversos tamanhos de partícula

Cited by 16 publications

References 14 publications

Feeding behaviors of feedlot bulls fed concentrate levels and babassu mesocarp meal

Feeding behaviors of feedlot bulls fed concentrate levels and babassu mesocarp meal

Intake and feeding behaviour of Morada Nova lambs fed different energy levels

Ingestive behavior of sheep fed Brazil nut cake in the diet

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