Categoría: Ruminants

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SIMULATION OF FEED RESTRICTION AND FASTING: EFFECTS ON ANIMAL RECOVERY AND GASTROINTESTINAL PERMEABILITY IN UNWEANED ANGUS-HOLSTEIN CALVES

  • 01/01/2022
RESUMEN: Feed restriction and fasting experienced during commercial production negatively affect unweaned calves’ behavior and health status. Transportation and stays at assembly centers are the main factors generating these disorders. For this study, 20 unweaned Angus-Holstein bull calves [44.1 ± 2.04 kg of body weight (BW) and 14.7 ± 0.63…
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IMPACT OF FEED RESTRICTION AND FASTING SUFFERED

IMPACT OF FEED RESTRICTION AND FASTING SUFFERED IN ASSEMBLY CENTERS AND TRANSPORTATION ON ENERGY BALANCE AND GUT PERMEABILITY IN UNWEANED ANGUS-HOLSTEIN CALVES

  • 01/07/2021
RESUMEN: Twenty unweaned Angus-Holstein calves (44.1 ± 2.0 kg; 14.7 ± 0.63 d) were used to evaluate the effects of feed restriction and fasting on energy balance (serum concentration of glucose, BHBA, and NEFA), and intestinal permeability (serum concentration of citrulline, Cr-EDTA, lactulose, and D-mannitol). Calves were randomly assigned to…
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OPTIMIZATION OF INTESTINAL PERMEABILITY ASSAYS TO STUDY

OPTIMIZATION OF INTESTINAL PERMEABILITY ASSAYS TO STUDY THE DEGREE OF FASTING IN GUT PERMEABILITY OF UNWEANED ANGUS-HOLSTEIN BULL CALVES

  • 01/07/2021
RESUMEN: In-vivo assessments of intestinal permeability can be expensive and time consuming. Additionally, the correct choice of test molecules to use and the optimum sampling time under fasting situations needs be optimized. Fifteen unweaned Angus-Holstein bull calves (44.1 ± 2.0 kg and 14.7 ± 0.63 d) were randomly assigned to 1…
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PREVENTION IS BETTER THAN CURE APPLIED TO HEAT STRESS

PREVENTION IS BETTER THAN CURE APPLIED TO HEAT STRESS

  • 01/05/2021
RESUMEN: Heat stress produces a wide range of negative consequences, some of them with long-lasting effects. When livestock are subjected to this environmental stress, it can be detrimental to health, well-being, and performance. Setting up multiple strategies before heat stress strikes is crucial.
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CHICKEN OR THE EGG: THE RECIPROCAL ASSOCIATION BETWEEN FEEDING BEHAVIOR AND ANIMAL WELFARE AND THEIR IMPACT ON PRODUCTIVITY IN DAIRY COWS

  • 01/12/2018
Feeding behavior in dairy cattle has a significant impact on feed efficiency, which is important for increasing the profitability of livestock and, at the same time, reducing the environmental impact. Feeding behavior can be measured by feeding time, meal duration, meal frequency, feeding rate, and rumination time. Higher feed intake…
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DETERMINATION OF OPTIMAL INCLUSION LEVEL OF BIOACTIVE OLEA EUROPAEA EXTRACT IN PROMOTING SECRETION OF GLP-1 AND ITS EFFECTS ON GROWTH AND HEALTH IN DAIRY CALVES

  • 01/06/2018
A bioactive extract from Olea europaea (OBE) can stimulate secretion of glucagon-like peptide-1 (GLP-1) and GLP-2, through bile acid receptor TGR5. Increasing circulation of GLP-2 promotes beneficial effects on intestinal function, which can be compromised in preruminant calves. The aims of this study was to determine the optimal inclusion level…
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