Caio Ouros | Universidade Estadual Paulista "Júlio de Mesquita Filho" (original) (raw)

Research paper thumbnail of Avaliação Dos Aspectos De Consumo De Frango De Corte Em Relação Aos Discentes De Graduação Da Universidade Federal Rural Da Amazônia- Campus Belém Entre O Período De 2019 a 2021

Anais do II Congresso Nacional de Ciências Agrárias On-line, Dec 7, 2022

Research paper thumbnail of Evaluation of probiotic and glutamine in ovo on broilers challenged with Salmonella Heidelberg

Journal of Applied Poultry Research

Research paper thumbnail of Beak trimming in japanese quails at initial phase is an alternative to reduce the negative effects of feather pecking

Acta Scientiarum. Animal Sciences, Mar 7, 2022

Research paper thumbnail of Importância Econômica Da Capivara (Hydrochoerus Hydrochaeris Linnaeus, 1766) e Da Ema (Rhea Americana Linnaeus, 1758) Em Áreas Agrícolas

Comportamento animal, 2019

Research paper thumbnail of Productivity and Well-Being of Broiler Chickens Supplemented With Probiotic

The Journal of Applied Poultry Research, 2019

SUMMARY Efficiency in poultry production is based on the balance between nutrition, intestinal he... more SUMMARY Efficiency in poultry production is based on the balance between nutrition, intestinal health, and animal welfare. With increasing consumer demand for antibiotic suppression of animal feed for growth, the animal nutrition segment has sought new alternatives to optimize production rates and, based on this concept, use probiotics—living microorganisms (beneficial bacteria and yeast) for animal health. The objective of the experiment was to evaluate the production and welfare of broilers fed different doses of probiotics. A randomized block experimental design with 4 treatments and 10 replicates of 50 birds (400 birds per treatment) each was employed as follows (Table 2): group 1–negative Control (NC): diet with a mixture of chlorohydroxyquinolines as the growth promoter at all phases; group 2: diet with half a dose of probiotic (HD) and chicks inoculated at the hatchery whit 5 × 108cfu/chick; group 3–positive control (PC): diet with probiotic (dose recommended by the manufactu...

Research paper thumbnail of Iluminação para poedeiras comerciais

Research paper thumbnail of Behaviour and animal welfare indicators of broiler chickens housed in an enriched environment

PLOS ONE

The present study aimed to assess the influence of adding straw bales, step platforms, and laser ... more The present study aimed to assess the influence of adding straw bales, step platforms, and laser projectors as environmental enrichment resources on the behaviour and welfare indicators of broiler chickens (Gallus gallus domesticus). A sample of 4,000 day-old male Cobb® 500 birds was used. The experimental treatments consisted of No Environmental Enrichment (NEE)—similar to a conventional environment; and Environmental Enrichment (EE)—environment enriched with straw bales, step platforms, and laser projectors, with four replicates per treatment of 500 animals. Behavioural characteristics (ethological observation through cameras, grab test, and modified touch test) and animal welfare indicators (pododermatitis and dorsal cranial myopathy) were assessed. The birds submitted to the EE treatment exhibited greater exploratory activity and expression of behaviours associated with comfort and welfare, whereas those in the NEE group were less active. Locomotion and play fighting behaviour d...

Research paper thumbnail of Nutritional assessment matrix of phytase enzyme in broiler females at different growing stages

Three hundred broilers females, with one day of age were distributed in a completely randomized d... more Three hundred broilers females, with one day of age
were distributed in a completely randomized design
with four treatments, with fi ve replicates composed
of 15 birds each. The treatments were: T1 - Control -
standard diet without phytase; T2 - Phytase- including
nutritional enzyme matrix with the manufacturer’s
recommendations; T3 – Phytase 10 - matrix used in
treatment 2 overestimated by 10% and T4 – Phytase
15 - matrix used in treatment 2 overestimated by 15%.
Experimental period was divided into the initial phase
(8-21 days), growth (22-35 days) and late (36-42
days old). The animal performance (weight gain, feed
intake and feed conversion), the quality of the bed
(calcium and phosphorus) and indexes: bioeconomic
effi ciency and productivity were evaluated. Weight
gain and food consumption were infl uenced (P<0.05)
by the appreciation of the enzyme, where the Fitase15
treatment showed the worst results compared to the
control treatment matrix. As for the quality of the
bed, with the inclusion of phytase treatments they
showed lower levels of calcium and phosphorus,
with an average reduction of 22% to 29% for calcium
and phosphorus, differed (P<0.05) with the control
treatment. The Fitasa10 treatment showed the best
cost / benefi t according to the results of bio-economic
index relationship. Therefore, based on performance
results, Bioeconomic index and reduced excretion of
nutrients in the bed, the overestimation of phytase
nutritional matrix in 10% is feasible for female broilers.