The aim of this study was to evaluate the productive performance of broilers and the morphometric characteristics and indicators of tibial mineralization as an effect of the inclusion of five sources of commercial inorganic phosphate in the diet. Three hundred male BB chickens from the Cobb 500 Line were used, randomly distributed in six treatments with 10 repetitions per treatment and five birds per repetition. The birds were fed for 21 days with the following diets: T1, basal diet + food grade monosodium phosphate (MNaP); T2, basal diet + dicalcium phosphate (DCP); T3, basal diet + monodicalcium phosphate 1 (MDCP 1); T4, basal diet + monodicalcium phosphate 2 (MDCP 2); T5: basal diet + monocalcium phosphate 1 (MCP 1); T6, basal diet + monocalcium phosphate 2 (MCP 2). Productive variables were recorded: body weight, weight gain, feed consumption and feed conversion. The birds were slaug...

The aim of this study was to evaluate the productive performance of broilers and the morphometric characteristics and indicators of tibial mineralization as an effect of the inclusion of five sources of commercial inorganic phosphate in the diet. Three hundred male BB chickens from the Cobb 500 Line were used, randomly distributed in six treatments with 10 repetitions per treatment and five birds per repetition. The birds were fed for 21 days with the following diets: T1, basal diet + food grade monosodium phosphate (MNaP); T2, basal diet + dicalcium phosphate (DCP); T3, basal diet + monodicalcium phosphate 1 (MDCP 1); T4, basal diet + monodicalcium phosphate 2 (MDCP 2); T5: basal diet + monocalcium phosphate 1 (MCP 1); T6, basal diet + monocalcium phosphate 2 (MCP 2). Productive variables were recorded: body weight, weight gain, feed consumption and feed conversion. The birds were slaug...

Background/Objectives: Extended-Spectrum Beta-Lactamase-producing Escherichia coli (ESBL-E. coli) are widely circulating in livestock of low- and middle-income countries. However, the drivers of their circulation remain largely unknown. Small-scale farms in Peru exhibit an unusually high prevalence of fecal carriage of ESBL-E. coli in their livestock. The objective of this study was to compare the prevalence of ESBL-E. coli fecal carriage in dairy cows, pigs, and poultry in the Lima and Ica regions of Peru and to identify the drivers associated with the observed prevalence at the farm level. Methods: We compared the prevalence of fecal carriage of ESBL-E. coli isolated from dairy cattle (N = 244 animals; 25 farms), pigs (N = 261; 25), and laying hens (N = 255; 10). We also administrated questionnaires to 59 farmers regarding their socioeconomic status, husbandry practices, animal disease...