Wplyw niektorych czynnikow srodowiskowych na uzytkowosc mleczna krow w 1 laktacji w stadach o roznym poziomie produkcji.
1987
Sobczynska M.
The effect of the calving season, calving age, length of intercalving periods on the milk performance of 4,669 primaparae cows depending on the herd production was investigated. The effect of these factors on the fat content in milk was not significant. The results obtained prove that the effect of environmental factors on the milk performance of cows does not depend on the herd production level.
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书目信息
其它主题
Amelioration des animaux; Lactacion; Estaciones del ano; Contenido de lipidos
注释
Summaries (En, Ru).
翻译的标题
英语.
Effect of some environmental factors on the milk performance of primiparous cows in herds with different production level.
类型
Monograph; Conference Paper; Conference Part; Conference Proceedings; Summary
粮农组织大会
50th Conference of Polish Zootechnician Society. Krakow (Poland). 18-20 Sep 1985.
团体作者
Polska Akademia Nauk, Jastrzebiec (Poland). Inst. Genetyki i Hodowli Zwierzat
2012-11-15
AGRIS AP