13 documents found, page 1 of 2

Effect of transportation distances, seasons and crate microclimate on broiler c...

The goal of this research was to evaluate the microclimate (temperature, relative humidity and ECI–enthalpy comfort index) of commercial loads of broiler chickens at different transport distances: Dist15 (15 km on average) and Dist90 (90 km on average) in the summer and winter seasons and their effects on the production parameters body weight difference (BWD), mortality (%) and bruising prevalence (%). Twelve b...

Sexual transmission of American Trypanosomes from males and females to naive mates

American trypanosomiasis is transmitted to humans by triatomine bugs through the ingestion of contaminated food, by blood transfusions or accidently in hospitals and research laboratories. In addition, the Trypanosoma cruzi infection is transmitted congenitally from a chagasic mother to her offspring, but the male partner's contribution to in utero contamination is unknown. The findings of nests and clumps of a...

Mathematical modeling for the management of the carrying capacity of aquacultur...

Áreas inundadas de reservatórios e lagos artificiais estão sendo cada vez mais utilizadas para a produção de peixes; contudo, os resíduos lançados pela aquicultura tornaram-se uma preocupação para o desenvolvimento sustentável desta atividade. Uma das principais estratégias adotadas pelos órgãos gestores e fiscalizadores consiste no uso de modelos hidrodinâmicos que calculam a capacidade de suporte ou de carga ...

Mathematical modeling for the management of the carrying capacity of aquacultur...

Made available in DSpace on 2018-12-11T17:15:38Z (GMT). No. of bitstreams: 0 Previous issue date: 2017-01-01. Added 1 bitstream(s) on 2019-10-09T18:31:21Z : No. of bitstreams: 1 S0100-204X2017000900695.pdf: 501065 bytes, checksum: 2f81e057e98f077bc1b26990709412fa (MD5); Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); Flooded areas of reservoirs and artificial lakes have been increasingly u...

Resistência à síndrome ascítica, competência homeotérmica e níveis de Hsp70 no ...

Como em outros seres vivos, também nas células das aves ocorre a síntese das proteínas de baixo peso molecular (Hsp), cujo aumento é induzido sob condições de estresse. As Hsps têm um papel importante na manutenção da integridade celular, questiona-se o seu envolvimento no mecanismo de proteção celular de órgãos alvos na ocorrência da síndrome ascítica (SA). Este trabalho objetivou avaliar a temperatura corpora...

Influence of stocking density on growth performance and welfare of juvenile til...

A intensificação da produção de tilápias pode gerar implicações negativas sobre o desempenho e o bem-estar dos peixes. Assim, é essencial determinar a densidade correta para otimizar a produção. O objetivo deste estudo foi avaliar o desempenho e o bem-estar de tilápias-do-nilo (Oreochromis niloticus) juvenis, com peso inicial médio de 30g (± 2,70), criadas em três diferentes densidades de estocagem, em gaiolas ...

Factors affecting heat tolerance in crossbred cattle in central Brazil

This study compared the adaptation traits in common crosses of crossbred dairy cattle in central Brazil. Twenty animals of each of three genetic groups were used: zebu (Bos indicus), Simmental x Zebu (SZ) and Holstein x Zebu (HZ). The test measured variations in rectal temperature (RT), respiration rate (RR) and heart rate (HR) of animals in the shade and after exposure to the sun, as well as mean daily milk pr...

Behaviour of captive Ostrich chicks from 10 days to 5 months of age

The behaviour of ostrich chicks bred in captivity was studied by using groups with 30 birds in five age groups: from 10 to 40 days of age; from 41 to 60 days of age; from 61 to 90 days of age; from 91 to 120 days of age and from 121 to 150 days of age. Six birds at each age were ringed around one of their feet and observed for four consecutive days for eight hours daily in three periods (in the morning, at noon...

Factors affecting heat tolerance in crossbred cattle in Central Brazil

Thermal comfort index and infrared temperatures for lambs subjected to differen...