搜索结果: 1-3 共查到“农学 sex ratio”相关记录3条 . 查询时间(0.078 秒)
Offspring sex ratio in domestic goats: Trivers-Willard out of natural selection
maternal age parental investment sex allocation
2015/7/7
In the present
study we have analyzed an extensive data set on the secondary sex ratio (SSR) including 59 335 goat kids born
in 30 633 litters to 11 644 mothers on farms all over the Czech Republi...
Estimation of Size Frequency Distribution, Sex Ratio and Length-Weight Relationship of Hilsa (Tenualosa ilisha) in the Bangladesh Water
Size frequency length-weight relationship Tenualosa ilisha Bangladesh
2010/11/8
The study is an attempt to estimate the size frequency distribution, sex ratio and length-weight relationship of hilsa (Tenualosa ilisha) by the SPSS programme from length-weight data collected from B...
EFFECT OF THE SEX RATIO ON THE EGG FERTILITY OF MUSCOVY DUCK (CAIRINA MOSHCATA)
Muscovy duck sex ratio hierarchial relations
2010/11/30
Study was carried out for establishing the optimal sex ratio in Muscovy duck breeding. Four variants of the ratio of the male to the female individuals were tested: 1:5(I), 1:6(II), 1:7(III) and 1:8(I...