Premium
Growth of Body Weight and Length of Bovine Fetuses
Author(s) -
Szuba Z.,
Kalisinska E.,
Babula Z.
Publication year - 1988
Publication title -
anatomia, histologia, embryologia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.34
H-Index - 35
eISSN - 1439-0264
pISSN - 0340-2096
DOI - 10.1111/j.1439-0264.1988.tb00744.x
Subject(s) - fetus , zoology , body weight , biology , pregnancy , endocrinology , genetics
Summary A. The weight (X) — Length (Y) relationship was studied on 302 Black‐White cattle fetuses (147 females and 155 males; weight range of 80—31,300 g). 1. The relationship for all the fetuses examined (n # 302) is described by the regression equation and correlations coefficient (r): logY # 0.34 logX + 0.37; r = 0.93. 2. The relationships in the consecutive growth periods are described by the following regression equations: I. early fetal period (n # 82; weight range 80–990g) logY # 0.37 logX + 0.71; r = 0.93; II. middle fetal period a) (initial phase) (n # 88; weight range 1000–3490g) logY # 0.28 logX + 0.57; r = 0.82; b) (terminal phase) (n # 69; weight range 3500–7990g) logY # 0.37 logX + 0.26; r = 0.84; III. late fetal period (n # 63; weight range 8000—31,300g) logY # 0.36 logX + 0.31; r = 0.91. B. Regression coefficients calculated in the present work for the Black‐White cattle fetuses were compared with corresponding literature data for various cattle races, camel and water buffalo.