Now showing items 31-40 of 568
Expression of heat shock protein in broiler embryo tissues after acute cold or heat stress
(Molecular Reproduction and Development, 2004-02-01) [Artigo]
This study evaluated the expression of heat shock protein 70 kD (hsp70) in broiler chicken embryos subjected to cold (Experiment 1) or high incubation temperature (Experiment 11). In each experiment, fertile eggs were ...
Distribuição do Tamanho de Poros em Cascas de Ovos Determinada pela Porosimetria de Mercúrio
(Revista Brasileira de Ciência Avícola, 2000-08-01) [Artigo]
Neste trabalho foi aplicada a porosimetria de mercúrio na caracterização da porosidade de cascas de ovos de poedeiras com 28 semanas de idade. Aplicando-se a técnica de porosimetria de mercúrio, pudemos descrever as ...
Water intake behavior of broiler chickens exposed to heat stress and drinking from bell or and nipple drinkers
(Revista Brasileira de Ciência Avícola, 2011-06-01) [Artigo]
The aspects involved in broiler water intake are not well known, despite the importance of water in animal nutrition and physiology. Water intake behavior should be taken into account when deciding on different types of ...
Intestinal and pancreas enzyme activity of broilers exposed to thermal stress
(Revista Brasileira de Ciência Avícola, 2003-04-01) [Artigo]
Thirty-two Hubbard broilers were raised under commercial husbandry to evaluate the effect of temperature exposure (26 and 35ºC) on the activity of digestive enzymes at different ages (23 and 46 days) and different ...
Lipid and glucose metabolism of broilers (Gallus gallus domesticus) experimentally infected with Eimeria acervulina Tyzzer, 1929 oocysts
(Revista Brasileira de Ciência Avícola, 2008-09-01) [Artigo]
Lipid and glucose metabolism of 76 ten-day-old Cobb male broilers, experimentally infected with Eimeria acervulina, was studied for 30 days. Birds were distributed in 2 groups: one infected with 1x10(6) E. acervulina ...
Expression of mRNA encoding FGF22 and FGFR1B around follicle deviation in Nelore (Bos indicus) heifers
(Reproduction In Domestic Ruminants Vii, 2010-01-01) [Resumo]
Dietas de baixa proteína no desempenho de frangos criados em diferentes temperaturas
(Pesquisa Agropecuária Brasileira, 2006-01-01) [Artigo]
O objetivo deste trabalho foi avaliar o desempenho de frangos, entre 42 e 49 dias, alimentados com dietas de baixa proteína e criados em diferentes temperaturas. Foram utilizados 360 frangos, machos, Cobb-500, distribuídos ...
Does low-protein diet improve broiler performance under heat stress conditions?
(Revista Brasileira de Ciência Avícola, 2004-06-01) [Artigo]
Nutrition for broilers under high temperatures is extremely important for brazilian broiler chicken industry because the amounts of consumed nutrients and environmental temperature have great effects on bird performance ...
Egg traits and physiological neonatal chick parameters from broiler breeder at different ages
(Revista Brasileira de Ciência Avícola, 2004-03-01) [Artigo]
This investigation was carried out to study egg traits (weight, specific gravity and eggshell thickness), and neonatal chick parameters (weight, blood, cardiac and lung parameters) from breeder at different ages. After ...
Effect of dietary energy and stocking density on the performance and sensible heat loss of broilers reared under tropical winter conditions
(Revista Brasileira de Ciência Avícola, 2013-03-01) [Artigo]
The objective of the present study was to evaluate the effects of different dietary energy levels and stocking densities on the thermoregulating parameters, live performance, and carcass traits of broilers reared under ...