Favoring the birth of female puppies after artificial insemination using chilled semen diluted with powdered coconut water (ACP-106c)

The objective was to determine the effect of powdered coconut water extender (ACP-106c) on the proportion of female puppies born. Twenty French Bulldog bitches were subjected to natural mating (NM) and, during the subsequent two estrus periods, were bred by intravaginal artificial insemination (AI),...

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Bibliographic Details
Published in:Theriogenology 2012-06, Vol.77 (9), p.1959-1963
Main Authors: Uchoa, Daniel Couto, da Silva, Ticiana Franco Pereira, Cardoso, Janaína de Fátima Saraiva, Filho, Antônio Cavalcante Mota, Jucá, Ricardo Parente, Silva, Alexandre Rodrigues, Machado da Silva, Lúcia Daniel
Format: Article
Language:English
Subjects:
Animals
Artificial insemination
bitches
Cocos - chemistry
Cold Temperature
Dog
Dogs - physiology
Female
Insemination, Artificial - methods
Insemination, Artificial - veterinary
litter size
Male
males
natural mating
Powdered coconut water
Pregnancy
puppies
semen
Semen - physiology
Semen extender
Sex Preselection - veterinary
Sex ratio
Water - chemistry
whelping
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Summary:The objective was to determine the effect of powdered coconut water extender (ACP-106c) on the proportion of female puppies born. Twenty French Bulldog bitches were subjected to natural mating (NM) and, during the subsequent two estrus periods, were bred by intravaginal artificial insemination (AI), using chilled semen (from the same males) diluted in Tris-egg yolk (AI-Tris) or ACP-106c (AI-ACP-106c). Fresh semen was cooled to 5 °C and maintained at that temperature for 6 h, rewarmed (37 °C for 30 s), and used for AI. Pregnancy and whelping rates following NM were both 100% and were both 90.0% following AI with either extender. Litter size (mean ± SD) was 5.4 ±1.1, 4.7 ± 2.0, and 5.1 ± 2.0 (P > 0.05) for NM, AI-Tris, and AI-ACP-106c, respectively. Furthermore, for these groups, the number of female vs. male puppies born were 2.6 ± 0.6 vs. 2.8 ± 1.0, 2.2 ± 1.0 vs. 2.5 ± 1.1, and 3.4 ± 1.6 vs. 1.8 ± 1.2 (P < 0.05 for AI-ACP-106c only). In conclusion, our hypothesis was supported; AI of semen in ACP-106c extender resulted in a significantly higher proportion of female puppies. Furthermore, this extender yielded acceptable litter size and rates of pregnancy and whelping.
ISSN:0093-691X
1879-3231
DOI:10.1016/j.theriogenology.2011.11.029