Breeding of plymouth rock meat chickens at the Smena breeding and genetics center

Autor:	D. N. Yefimov, Zh. V. Yemanuilova, L. I. Tuchemsky, A. V. Yegorova
Rok vydání:	2014
Předmět:	Psychiatry and Mental health animal structures Neuropsychology and Physiological Psychology Animal science Hatching embryonic structures Plant biochemistry Live weight Parent Form Biology Feed conversion ratio
Zdroj:	Russian Agricultural Sciences. 40:220-223
ISSN:	1934-8037 1068-3674
DOI:	10.3103/s1068367414030069
Popis:	It has been found that the live weight at the age of 35 days in five generations of selection increases in the line B7 and B9 for male birds by 12.0 and 9.0%, for female birds—by 9.2 and 8.2%, egg fertilization—by 1.6 and 1.4%, hatching of chicks—by 1.0 and 1.5%, hatching of chicks from one egg layer—by 3.9 and 2.5%. The yield of meat from one egg layer of maternal parent form B79 is higher in comparison with the cross “Smena7” by 6.3%.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::dc5e9d5fc572e9157a47f022434a462f https://doi.org/10.3103/s1068367414030069 Zobrazit plný text záznamu Full text from SpringerLink