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Opaline is one of the favourite mutations of young and senior aviculture; this article will explain the "split" knowledge in opaline. The inheritance mode on the opaline is Sex-Linked Recessive, so for some inexperienced people, this will be more complicated than the autosomal recessive mutation, especially if working with a "split" bird.
As a reminder, "split" is used for a Lovebird who inherited only one copy of the allele from a mutant parent. So phenotypically, it is a bird with a Normal appearance.
However, the condition in their genotype carries one duplicated of mutant alleles from their parents.
The next generation can inherit proof of "split" by conducting breeding tests if mutant alleles get identical pairs.
In genetic science, the sign " / " symbolises "split". And henceforth, in this article, the sign " / " will also represent "split".
In autosomal recessive mutations, the cross between Mutant X Normal will get Normal chicks/Mutants, which can happen in both male and female chicks.
As for the Sex-Linked recessive mutation, you will get a "split" only in male chicks. While chicks are definitely Mutants.
For example, if you cross opaline X Green, you will get chicks Green/Opaline "male" and Green Opaline "female".
Likewise, when you work with "split" birds on Sex-Linked mutations, e.g. Green/Opaline X Green, you will get "male" Green/Opaline chicks and "female" Green Opaline chicks.
Even if there is a green phenotype that cannot inherit Opaline in later generations, it does not get a copy of the opaline allele from the parents and is a normal Green.
Knowing the Opaline "split" on the Phenotype
You can use the image guide above as an alternative to the Green Option Crossover Opaline X Green. Green/Opaline has a red pattern on the tail feathers that is wider when compared to normal green; you can compare the images of numbers 2 and 3 which are wild-type tail feathers patterns.
While in figures 4 and 5 is Green /Opaline with a wider pattern of tail feathers, especially on red patches.
Figure 1 shows a pattern of tail feathers from green/NSLino with a much narrower red spot. On the Green Opaline, the pattern of tail feathers will be completely red with a black stripe.
But this method does not fully guarantee that the greens are completely "split" Opaline. Of course, you have to conduct breeding tests to get the relevant conclusions.
DNA Sexing is only necessary when you want to restrain a teenage chick that you are still unsure of in determining a male or female.
How to get a combination of opaline mutations
To get the Phenotype as in the image, you must have birds with genetic Bleu1Blue2, Violet Factor, and of course, Opaline. Work with split Opaline birds:
- 1.0 Green/Opaline/blue1 X 0.1 Blue1Blue2 SF Violet
- 1.0 Green SF Violet/Opaline/blue1 X 0.1 Blue1Blue2
- 1.0 Green SF Violet/Opaline/blue1 X 0.1 Green/Blue1Blue2
And there are many more Crossover configurations that you can try as long as it has been a combination as above.
Knowing what a "split" is and how they work on the Opaline mutation will save time and finances.
A bird split transaction is a trust transaction! If you trust the seller/breeder, please buy the split bird. If you have doubts, then forget the transaction immediately.