Heritability of Egg Production and Egg Weight in Turkey
نویسندگان
چکیده
منابع مشابه
Effect of Egg Weight on Egg Traits and Hatching Performance of Turkey (Meleagris gallopavo) Eggs
The study was conducted to determine the effects of turkey (Meleagris gallopavo)egg weight on certain egg traits and hatching performance. A total of 178 turkey eggs comprising of three different egg weight groups below 60 g (G I), 61 to 69 g (G II) and above 70 g (G III) were used for this study. Average egg weight (g), egg length (cm), egg breadth (cm) and egg volume (cm3) values increased wi...
متن کاملI . mproved Egg Size high heritability of egg weight gives rapid response to selective breeding
Breeding for egg size differs in several important respects from other problems of poultry breeders. In the improvement of egg number, livability, hatchability and many other economically important characters, the breeder always selects in one direction. His goal is to have the birds in his flock lay the largest possible number of eggs, live as long as possible, at least until he i s ready to d...
متن کاملeffect of egg weight on egg traits and hatching performance of turkey (meleagris gallopavo) eggs
the study was conducted to determine the effects of turkey (meleagris gallopavo)egg weight on certain egg traits and hatching performance. a total of 178 turkey eggs comprising of three different egg weight groups below 60 g (g i), 61 to 69 g (g ii) and above 70 g (g iii) were used for this study. average egg weight (g), egg length (cm), egg breadth (cm) and egg volume (cm3) values increased wi...
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The role of thyroid hormones in the expression of photosensitivity-photorefractoriness in female turkeys was investigated through the use of an antithyroidal agent, 6-n-propyl-2-thiouracil (PTU). In experiment 1, females held continuously from hatch on long day lengths (16L:8D; LD) and fed 0.1% PTU from 0 to 16 wk, began laying eggs at 26 wk of age, peaking at 75% hen-day egg production by 29 w...
متن کاملEgg Production Traits and Egg Quality Characteristics in Black and Brown Plumage Color Lines of Japanese Quail
The present study was conducted to determine egg production traits and egg quality characteristics in black and brown lines of Japanese quail. A total of 500 quails comprising 400 females and 100 males obtained from two breeding centers were raised according to the standard procedure for Japanese quail. They were grouped in according to their plumage colours. Age at first egg-laying has been re...
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ژورنال
عنوان ژورنال: Poultry Science
سال: 1954
ISSN: 0032-5791
DOI: 10.3382/ps.0330417