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Full-Text Articles in Medicine and Health Sciences
Circulating Metabolic And Reproductive Hormone Changes In Laying Hens Kept Under Various Heat-Combating Systems, Muhammad Safdar Anjum, Mansur Abdullah Sandhu, Zia Ur-Rahman, Anum Safdar
Circulating Metabolic And Reproductive Hormone Changes In Laying Hens Kept Under Various Heat-Combating Systems, Muhammad Safdar Anjum, Mansur Abdullah Sandhu, Zia Ur-Rahman, Anum Safdar
Turkish Journal of Veterinary & Animal Sciences
The objective of the present study was to observe the circulating metabolic, reproductive, and stress hormones in laying hen performance under different heat-combating systems (HCSs). A total of 500 White Leghorn pullets at 24 weeks of age were subjected to four HCSs, i.e. desert cooling (DC), water sprinkling (WS), time limit feeding (TLF), and ascorbic acid (AA) supplementation, at environmental temperatures from 32.30 to 40.80 °C with 76.40% relative humidity. Blood was collected before heat stress, at peak stress, and after heat stress to collect plasma. The results of the 24-week stress period showed significantly less circulating T3, T4, estrogen, …
Egg Production, Egg Quality, And Cecal Microbial Populations Of Layersfed Diets Supplemented With Fermented Phytogenic Feed Additive, Jae Hong Park, Tae Hwa Song, Inho Kim
Egg Production, Egg Quality, And Cecal Microbial Populations Of Layersfed Diets Supplemented With Fermented Phytogenic Feed Additive, Jae Hong Park, Tae Hwa Song, Inho Kim
Turkish Journal of Veterinary & Animal Sciences
This study was undertaken to examine the effect of fermented phytogenic feed additive (FPFA) containing Gynura procumbens and Rehmannia glutinosa on egg production, egg quality, and cecal microflora population in layers. In total, 288 Hy-Line brown layers were randomly divided into 4 dietary treatment groups with 6 replicate pens per treatment group for 5 weeks. The dietary treatments were the control group (CON; basal diet without FPFA), FPFA1 (CON + 0.5% FPFA), FPFA2 (CON + 1% FPFA), and FPFA3 (CON + 2% FPFA). Egg production and egg weight during the experiment (35-39 weeks) improved linearly with the supplementation of 1% …