A study on the inheritance and phenotypic and genetic interrelationships among some physiological and productive variables in Jersey cows : a thesis presented in partial fulfilment of the requirements for the degree of Master of Agricultural Science, Massey University of Manawatu, New Zealand
Institution: | Massey University |
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Department: | |
Year: | 1964 |
Keywords: | Jersey cattle; Physiology; Dairy cattle; Climatic factors; New Zealand; Manawatu |
Record ID: | 1563706 |
Full text PDF: | http://hdl.handle.net/10179/5282 |
Field studies were made on mixed age, lactating Jersey cows (130 dams and 143 daughters) from 18 herds in the district of Manawatu (New Zealand) during the summer of 1963-64 with the following objectives : (i) to measure the variation present in the physiological variables ; (ii) to estimate the heritability of the physiological variables ; (iii) to estimate phenotypic correlations between the physiological variables ; (iv) to estimate genetic correlations between the physiological variables ; (v) to estimate phenotypic correlations between the physiological variables and the productive variables ; and (vi) to estimate genetic correlations between the physiological variables and the productive variables.