376 THE INDIAN JOURNAL OF VETERINARY SCIENCE AND ANIMAL HUSBANDRY [ III, IV.
In a paper on Lincoln ♂ × Hissar ♀♀ crosses Belhov, Belehov, Dobrogorsky
and Zhitnikov (1932) give the following table of degrees of fineness observed;
|
Measurements in µ |
F1 |
Hissar |
Lincoln |
|
Fine wool-fibres...... |
23.4 |
23.05 |
.. |
|
Transition fibres.... |
37.43 |
35.89 |
47.12 |
|
Kemp..... |
51.1 |
.. |
.. |
|
Dead hair........ |
80.9 |
158.79 |
.. |
The authors state that the uniformity of the fleece is unsatisfactory, and more
so in coloured animals than in white-fleeced ones.
Belehov (1932) discusses a Mouflon × Chuntuk cross in which seven F1 animals
were raised. The following figures for fineness were obtained :
|
Measurements in µ |
F1 |
Mouflon |
Chuntuk |
|
Fine wool-fibres....... |
16.8 |
13.1 |
25.0 |
|
Kemp........ |
65.9 |
.. |
96.4 |
|
Dead hair...... |
122.45 |
169.8 |
.. |
Zhitnikov (1932) reporting the results of crosses between Chushka ♂ × Karakul
ewes, states that the fleece in the F1 generation possesses all the different types of
fibre found in the parental breeds, but that the number of transition fibres is greater,
the amount of kemp is smaller, whilst the proportions of fine woolfibre are
intermediate.
He gives the following figures —
|
Measurements in µ |
F1 |
Karakul |
Chushka |
|
Fine wool-fibres....... |
21.8 |
26.5 |
36.72 |
|
Transition fibres....... |
44.8 |
49.7 |
52.59 |
|
Kemp fibres...... |
60.59 |
62.7 |
63.03 |
Nichols, in a paper not yet published on wool-characters in the Border Leicester
♂ × Cheviot ♀♀ (i.e., the Scottish half-bred sheep), discusses the data of mean fibre-
length, mean weight-length ratio, and mean fibre-volume of samples from the
parental, F1 and F2 generations. He shows that for length there is a tendency to