Cytogenetic study of the Spanish goat breed Murciana-Granadina

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Cytogenetic study of the Spanish goat breed

Murciana-Granadina

I Burguete

To cite this version:

Cytogenetic

study

of the

_Spanish

goat

breed

Murciana-Granadina

I

_Burguete

Facultad de

_Veterinaria,

Universidad de

_Murcia,

Laboratorio de

_{Citogenética Animal,}

Genética y

Mejora Animal,

30100

Espinardo, Murcia, Spain

(Proceedings

of the 9th

_{European Colloquium}

on

Cytogenetics

of Domestic

Animals;

Toulouse-Auzeville,

10-13

_July

₁₉₉₀₎

goat

/

chromosomes _/ Murciana-Granadina breed

INTRODUCTION

In order to

_provide

a basis to know the level of chromosome aberrations in

populations

of the autochthonous

_Spanish

_goat

breed

Murciana-Granadina,

we

have,

for the first

_time,

_{cytogenetically analyzed}

these

_goats.

The number of chromosomes and chromosomal abnormalities are recorded.

This

_goat

breed is distributed

_especially

in southeastern

_(Granada,

_Almeria,

Murcia and

_Alicante)

_Spain

_{(Mason, 1981)}

and one of its main virtues is its

dairy potential

(Del

Amo

Garcia,

1983)

principally

to

_produce

cheese

_(Poto,

1990,

personal

communication).

MATERIALS AND METHODS

The

_{cytogenetic analyses}

were made on 106 animals

(24

females,

82

males)

coming

from 7 cattle associations located in Murcia. The females were taken at random and the males had been

_preselected

for

_testing.

Peripheral

blood was cultured for conventional studies as

previously

described

(Burguete

et

_al,

₁₉₈₇₎

with some modifications

(RPMI-1640

medium,

Flow Dutch

modifications and fetal calf serum, Gibco

myoclone

plus).

RESULTS AND DISCUSSION

The normal

_karyotype

of the

goat

has 2n = 60

chromosomes,

all acrocentric

_except

the Y chromosome which is the smallest and the

_only

metacentric one.

The incidence of chromosomal abnormalities and their distribution in the seven

cattle associations are shown in table I. It is

_interesting

to note that out of

M:

_male;

F: female

at random

_(4.2%)

and one male

_preselected

for

_testing

_{(1.2%) (figs}

1 and

₂₎

and

Caprine

chromosomes have been studied

using

banding

techniques

such as the

RBA

_technique

_(Di

Berardino et

al,

1987)

for a definitive identification of the

chromosomes involved.

It will be very

interesting

to further

_investigate

these centric fusions in order to

identify

them and to see their

possible

effects on _sperm

production,

prolificacy

and

other characters of interest.

ACKNOWLEDGMENTS

The author thanks Mr A Poto and his co-workers for excellent collaboration on this

_study;

Mr M

_Zaragoza,

Mr C Sdnchez and Miss C Escoda for technical assistance. This work was

supported

in _part

_by

a _grant from the Estaci6n

_Regional

de

_Mejora

Ganadera, Consejeria

de

_Agricultura,

Ganaderia y Pesca de la

Region

de Murcia,

Espana.

REFERENCES

Burguete

I, Di Berardino D, Lioi MB, Taibi L, Matassino D

₍₁₉₈₇₎

_Cytogenetic

observa-tions on a Robertsonian translocation in Saanert _goats. Genet Sel

_{Evol 19,}

391-398 Del Amo Garcia

₍₁₉₈₃₎

Razas

_caprinas.

In: Manual Sobre Cabras. Ministerio de

Agricul-tura, Pesca _y

_{Alimentacion,}

Madrid

Di Berardino _D, R0nne M,

Burguete

I, Lioi

_MB,

Taibi

L,

Matassino D

₍₁₉₈₇₎

The

R-banding

pattern of the

_prometaphase

chromosomes of the _goat

_(Capra

hircus

_L)

J Hered

78, 225-230