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Breed Complimentarity
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mikey
FARM MANAGER
Hero Member
Posts: 4361
Breed Complimentarity
«
on:
November 09, 2007, 04:16:28 PM »
In males hybrid vigor influences libido,hardiness and longevity.Breed complimentarity is defined as the improvement in production efficiency that results from crossbreeding systems that let strengths of the sires breed offset the weakness of the dams breed and visa versa.There are several ways you can do this.
Terminal Crossbreeding:
all offspring are slaughtered.new breeding stock is bought.
Rotational Crossing:
moving between 2 sire breeds,this can produce a 3rd breed.
Roto-Terminal:
doe breeds are rotated,some doe kids kept for breeding,the rest slaughtered.
A well designed crossbreeding program should have a fixed goal in mind with all breeding focused to maximize the desired traits.
Hope this may be of some help to others,Sure is lonely here by myself,would be nice if other goat farmers would take part in this forum,come on now, do not be shy.
SUPPORT THE GOAT mikey
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nemo
Veterinarian
Administrator
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Posts: 6245
Re: Breed Complimentarity
«
Reply #1 on:
November 09, 2007, 04:44:10 PM »
I would try to invite goat breeders to this forum. Para di ka lonely.
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mikey
FARM MANAGER
Hero Member
Posts: 4361
Re: Breed Complimentarity
«
Reply #2 on:
November 11, 2007, 03:40:02 AM »
Crossing with Swiss breeds to improve milk production has been attempted in the Caribbean,East Africa,Malaysia,Fiji,Mauritius and Australia.In West Malayasia the Toggenburg was the least satisfactory.Saanen and British Alpine crosses on the local goats were superior to the local goat in milk production but for all round performance the Anglo-Nubian was the most successful improver.Among meat breeds only the Boer has a reputation but it has in fact not been very successful in East Africa(see Devendra and Burns, 1982).
It can be concluded that with goats even more than with sheep crossing with European breeds must be undertaken only with the greatest caution.For both milk and meat production the need is for selection programmes to produce improved tropical breeds which can be used for grading up populations in which such a selection programme is not possible.
SUPPORT THE GOAT
FROM ALL PHILIPPINE GOAT PRODUCERS
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mikey
FARM MANAGER
Hero Member
Posts: 4361
Re: Breed Complimentarity
«
Reply #3 on:
November 15, 2007, 11:47:33 AM »
There are times when the smaller producer,wishing to improve their herd can use LINEBREEDING.Linebreeding is the breeding of closely related animals,example,father to daughter and grandaughter,mother to son and grandson,a good pratice is to never breed FULL BROTHERS and SISTERS.Some say in-breeding is line breeding gone wrong,there is some truth in this,this is a useful management pratice to use to build up a herd,remember the set goal is to improve your herd (hybred vigor) and not kill your herd (loss of hybred vigor results in goats becoming unhealthier and die soon than expected).We have line bred fullblood anglos with no foreseen problems,RECORD keeping is so important in this bus.Alot of producers keep only 1 sire for breeding,it is written to replace your breeding sire every 3 years to prevent in breeding.When buying a sire,buy one that is the best your budget will afford and start from that point.Remember keep records.
Region 7 Independant producer
mikey
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