Aspectos metodológicos do comportamento ingestivo de bovinos em pastejo

Mezzalira, J. C.; Carvalho, Paulo César de Faccio; Fonseca, Lidiane; Bremm, Carolina; Reffatti, Mônica Vizzotto; Poli, César Henrique Espírito Candal; Trindade, Júlio Kuhn da

doi:10.1590/s1516-35982011000500024

Cited by 34 publications

(23 citation statements)

References 14 publications

(13 reference statements)

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“…However, visual observation remains the most frequently used strategy because it is cost effective and allows detailed descriptions of the feeding behavior of animals (MEZZALIRA et al, 2011). In addition, voluntary and controlled consumption is important for housed animals that are fed in troughs (MAGGIONI et al, 2009); thus, feeding conditions may also influence feeding behavior parameters (CARDOSO et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Feeding behavior in lambs fed diets containing crambe cake

Syperreck

Mizubuti

Pereira

et al. 2016

SCA

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It was evaluated the feeding behavior of lambs fed diets containing 30% sorghum silage and 70% crambe cake (30:70 diet), and 70% sorghum silage and 30% crambe cake (70:30 diet) under voluntary and controlled consumption. The experimental design used was a 4 × 4 Latin square, with four animals, four periods, and four treatments; feeding behavior was determined by observation. The results indicated that animals fed the 30:70 diet showed higher DM and NDF (g day -1 ) than those fed the 70:30 diet. Animals fed the 70:30 diet showed longer feeding times (h kg -1 DM), mastication (min kg -1 DM and min kg -1 NDF), rumination (min day -1 and min kg -1 DM), and the largest number of mericics chewing per bolus; however, a higher feed efficiency (g DM h -1 ) was observed in the 30:70 diet group. Furthermore, animals feeding voluntarily had higher DM intake and chewed for longer. Therefore, the combined results indicated that crambe cake could be used in the diet of sheep without affecting feeding behavior.

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Section: Introductionmentioning

confidence: 99%

Feeding behavior in lambs fed diets containing crambe cake

Syperreck

Mizubuti

Pereira

et al. 2016

SCA

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“…This can be explained by the habit of the animals that search for food at specific times of the day, regardless of the treatment. Mezzalira et al (2011) argued that animals managed on pastures with high forage supply achieve a high intake rate and reach satiety and as a consequence there is a reduction in meal duration, an increase in satiety time and longer intervals. The same authors point out that the number and duration of meals are directly related.…”

Section: Resultsmentioning

confidence: 99%

Feeding behavior of dairy cows on pasture fed detoxicated castor meal in the diet

Porto

Silva

et al. 2016

SCA

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This study evaluated the feeding behavior of lactating cows on pasture of Brachiaria (Urochloa) decumbens fed with concentrate supplementation containing different levels of castor meal inclusion treated with calcium hydroxide Ca (OH) 2, in the proportions of 0; 3.3; 6.6 to 10% of the total diet. Eight cows (degree of blood ½ to ¾ Holstein x Zebu), with previous average production of 3000-4000 kg adjusted to 300 days of lactation and average body weight of 465.16 kg ± 65.45 kg were distributed in two 4 x 4 Latin squares. The behavior was assessed every five minutes for 24 hours on the 21 st day of each period. The results were tested by analysis of variance and regression at p < 0.05 probability. The time spent in grazing, rumination, idle and in the trough; total chewing time, number of cuds per day, chewing per day; chewing per cud; the number of periods of grazing, rumination, idle and in the trough; time spent by period of grazing, rumination, idle and in the trough were not different between treatments. The feed efficiency (g DM h -1 ; g NDFa h -1 and g TDN h -1 ) and time spent per cud ruminated TSR sec cud -1 ) were linearly reduced. It is recommended to include up to 10% castor meal treated with Ca (OH) 2 in the total diet. Key words: Bite. Co-product. Pasture. Ruminant. ResumoObjetivou-se avaliar o comportamento ingestivo de vacas leiteiras em pastagem de Brachiaria (Urochloa) decumbens submetidas a suplementação concentrada com diferentes níveis de inclusão de farelo de mamona tratada com hidróxido de cálcio Ca(OH) 2 , nas proporções de 0; 3,3; 6,6 e 10% na dieta total. Utilizaram-se oito vacas (grau de sangue ½ a ¾ Holandês x Zebu), com produção média anterior entre 3.000 a 4.000 kg, ajustada para 300 dias de lactação e peso corporal médio 465,16 kg ± 65,45 kg. cinco minutos, durante 24 horas no 21º dia de cada período. Os resultados foram submetidos a análises de variância e regressão a 0,05 de probabilidade. Os tempos despendidos nas atividades de pastejo, ruminação, ócio e cocho; tempo de mastigação total, número de bolos ruminados por dia, mastigação por dia; mastigação por bolo; o número de período de pastejo, ruminação, ócio e cocho; tempo gasto por período de pastejo, ruminação, ócio e cocho não houve diferença entre os tratamentos. A eficiência de alimentação (em g MS h -1 ; g FDNc h -1 e g NDT h -1 ) e tempo gasto por bolo ruminado TRB seg bolo -1 reduziram linearmente. Recomenda-se a inclusão de até 10% de farelo de mamona tratada com Ca(OH) 2 na dieta total. Palavras-chave: Bocado. Coproduto. Pastagem. Ruminante.

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“…In the feedlot, the animals were subjected to behavioral assessments for four 24-h periods by visual observation of their feeding behavior, which took place at 5-min intervals (Mezzalira et al, 2011). The following behavioral variables were studied: feeding (concentrate, roughage, or CG intakes), water intake, rumination, and idle (Azevedo et al, 2013).…”

Section: Methodsmentioning

confidence: 99%

Performance and carcass characteristics of goats fed crude glycerin in the feedlot and during pre-slaughter lairage

et al. 2018

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-This study evaluated the effects of crude glycerin (CG) supplied separately from the other dietary ingredients to goats during the feedlot and in the pre-slaughter lairage on the nutrient intake, performance, behavioral and physiological parameters, carcass characteristics, and meat quality. Twenty-eight uncastrated male goats from a cross between the Boer breed and mixed-breed goats were used in a completely randomized design in a 2 × 2 factorial scheme, consisting of the feedlot with or without CG inclusion in the diets (96.90 g kg -1 DM) and the pre-slaughter lairage, also with or without the ingredient. In the feedlot, goats fed CG had a lower intake of dry matter and nutrients. Crude glycerin intake reduced the weight gain and body weight of goats and increased feed conversion. Weights of carcass and cuts (leg, loin, ribs, and shoulder) were lower when the animals consumed CG in the feedlot. In pre-slaughter lairage, concentrations of cortisol were lower when the animals consumed CG. Characteristics of carcass and meat (pH, color, water holding capacity, cooking loss, and shear force) were not changed by the supply of CG during the pre-slaughter. When supplied during the feedlot period and separately from the other dietary ingredients, CG negatively affected the performance and carcass characteristics of goats without changing meat quality. In the pre-slaughter lairage, CG intake lowers the cortisol level and does not change the behavioral parameters or carcass and meat characteristics of goats.

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Aspectos metodológicos do comportamento ingestivo de bovinos em pastejo

Cited by 34 publications

References 14 publications

Feeding behavior in lambs fed diets containing crambe cake

Feeding behavior in lambs fed diets containing crambe cake

Feeding behavior of dairy cows on pasture fed detoxicated castor meal in the diet

Performance and carcass characteristics of goats fed crude glycerin in the feedlot and during pre-slaughter lairage

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