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Estimation of genetic parameters for egg production traits in Japanese quail (Coturnix cot. japonica
Keeping Japanese quail is an economic way for producing egg, because of their early sexual maturity, high egg production, resistance to most of poultry diseases and great persistency in high yield. The objective of current ...
Genetic properties of egg quality traits and their correlations
Abstract 1. Performance traits were measured on 1908 Japanese quail and egg quality traits assessed on 1800 eggs at 10 wk of age. 2. Genetic and phenotypic correlations were estimated using a bivariate animal model with ...
Direct and maternal genetic effects of body weight traits in Japanese quail (Coturnix coturnix japonica)
The objective was to estimate direct and maternal genetic effects for body weight at different ages of Japanese quail. Genetic and phenotypic correlations were also estimated among body weight traits. In the first generation, ...
Genetic evaluation of meat quality traits and their correlation with growth and carcase composition in Japanese quail
1. Estimates of heritability, genetic and phenotypic correlations of performance and meat quality traits were obtained in a population of Japanese quail using restricted maximum likelihood (REML) procedures. 2. The ...
اثر جایگزینی سطوح مختلف تفاله مرکبات با دانه جو در جیره غذایی بره های نر توده تالشی
در این تحقیق اثر جایگزینی سطوح مختلف تفاله مرکبات خشک شده به جای دانه جو در جیره غذایی 24 راس بره نر نژاد تالشی در طی 84 روز با چهار تیمار و شش تکرار برای هر تیمار بررسی شد. مقدار جو در جیره غذایی شاهد 50 درصد در نظر گرفته ...
بررسی اثرات ثابت موثر بر برخی خصوصیات تولیدی و تولید مثلی در بلدرچین ژاپنی
در تحقیق حاضر، صفات تولیدی شامل وزن بدن در سنین مختلف، صفات مربوط به لاشه و صفات تولید مثلی از قبیل تعداد و میانگین وزن تخم، باروری و جوجه درآوری در جمعیتی از بلدرچین ژاپنی موجود در ایستگاه تحقیقاتی دانشگاه علوم کشاورزی و ...
Effects of Niacin on Milk Production and Blood Parameters in Early Lactation of Dairy Cows
To investigate the effects of niacin supplementation in the diet of high producing cows at early lactation, 21 holstein dairy cows were used in this experiment. Animal were assigned in to three groups based on their milk ...