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Studies of productive traits in a New Zealand Romney flock : the effect of some environmental factors, heritabilities and repeatabilities : a thesis presented in partial fulfilment of the requirements for the degree of Master of Agricultural Science in Animal Science at Massey University
(Massey University, 1971)
Three traits of dual purpose sheep such as the New Zealand Romney are of paramount importance in contributing directly to income. These are reproductive ability and wool production of the ewe flock and the growth rate of ...
Studies on the testicular development of the New Zealand romney ram : a thesis presented in partial fulfilment of the requirements for the degree of Master of Veterinary Science at Massey University
(Massey University, 1971)
The growth of 33 N.Z. Romney rams was observed between birth and 269 days of age. The weight And histology of the testes of these lambs were studied And compared with the histological charges of the testes in 44 foetuses ...
The effect of chorioptic mange (Chorioptes bovis) on ram fertility : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Veterinary Science at Massey University
(Massey University, 1971)
Chorioptic mange of the scrotum was induced in 14 of 27 rams during a study of the effects of scrotal mange on ram fertility. Scrotal lesions varied from those of only a few sq. mm in size to those which covered virtually ...
A study of some factors affecting reproductive performance in New Zealand Romney and Border Leicester X Romney two-tooth ewes : a thesis presented in partial fulfilment of the requirements for the degree of Master of Agricultural Science in Animal Science at Massey University
(Massey University, 1971)
The reproductive performance of tho ewe is a key factor determining flock productivity and also the rate of genetic improvement possible within flocks. The lambing percentage of Romney sheep in New Zealand is variable but ...