opinion please

[Guest guest]

-

ISCOWP (Balabhadra Dasa & Chaya Dasi - USA) <ISCOWP (AT) pamho (DOT) net>

Cow (Protection and related issues) <Cow (AT) pamho (DOT) net>

Friday, May 25, 2001 9:35 AM

opinion please

 

 

> Dear Rohita prabhu and prabhus,

>

> PAMHO. AGTSP.

>

> Could someone give their opinion on this being the reason for during a two

year

> period a ratio of calves is 51 females to 22 males. It is a mixed herd in

> India.

 

Comment:

Two questions;

 

1. By mixed herd do you mean animals of indicus and taurus (Indian and

European breeds)?

Normally animals of mixed ancestry generally produce a ratio of

3:1::males:female, this holds true for the pure indicus also.

 

2. If you are using one bull; two things;

 

-If he is young (under five) and of mixed ancestry , which I suspect he is,

you should not breed to more than twenty cows per season. This will be a

drain on his system, he is still growing and to repeatedly do this with a

young bull will stunt his growth.

 

-Normally, young bulls are noted for producing large numbers of female

offspring, as the bull ages the ratio slow approaches the ratio normally

seen produced by older bulls. Take into account that the larger breeds of

taurean animals (i.e. Brown Swiss) also mature at a slightly slower rate.

Bulls of indicus breeding normally do not mature until the age of nine and

are not capable of breeding before the age of five.

 

I had a Jersey bull that was used on ten cows when he was three, only one

calf was male; the next year he produced a ratio of 2 females for every male

and his fifth year his ratio was equal which is normal for the taurean

breeds.

 

The breed of the animals has a bearing on the sex ratio as does the age of

the bull, the age of the cow does not seem to make any difference on the sex

ratio.

 

> "If the cow is impregnated after seen goes into heat the third time then

more

> females are produced."

 

Comment:

"If the cow is impregnated after sHE goes into heat the third time, then

more females are produced."

 

Cows have very little effect on the sex of the offspring, this is mainly

governed by the age of the bull and his breed ancestry.

 

The effects of different impregnations are not accumulative in nature.

 

ys, Rohita dasa