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Effect of semen extender pH value on rahmany ram characteristics and on altering sex ratio of offspring [electronic resource].

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Khalifa, E.I

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Language: English Summary language: Arabic Description: p.49-52Other title:

تأثير قيمة الحموضة لمخفف السائل المنوي الرحماني على صفات السائل المنوي وتغيير النسبة الجنسية للمواليد [Added title page title]

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Agricultural research journal, Suez Canal University, 2009 v.9(1) [electronic resource].

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In: Agricultural Research Journal, Suez Canal University 2009 v.9(1)Summary: The objective of this study was to examine the effect of different pH extenders on semen characteristics and fetal sexing ratio of Rahmany sheep. The studying was included two trials. The first trail estimated the effect of incubation period on semen characteristics with different acidic values (6.9 to 6.4) and alkaline (7.1 to 7.6) media. Incubation semen was replicated with 18 pooled ejaculates collected from three rams and diluted with tris fructose extender (TFE). The second trial was used artificial insemination to define sex ratio of newborn using thirty ewes. The experimental ewes divided into two groups (15 each) G1 inseminated with pH 6.6, while, pH 7.3 serviced G2. Ewe's vagina washed before insemination by media 6.6 for Gl and 7.3 for G2. The results showed that sperm characteristics during incubation were higher (P<0.05) with pH between 6.9 and 6.6 than pH 6.5 and 6.4, while the difference in sperm characteristics from 6.9 to 6.6 was insignificant. Extenders with pH of 7.4-7.6 recorded decrease (P<0.05) in semen characteristics. However, pH between 7.1 and 7.3 yielded insignificant difference among semen characteristics through .incubation period. Insemination with pH 6.6 and pH 7.3 produced females’ sex ratio 66.67% and males lambing ratio 81.33%, respectively. It could be concluded that pH of semen affected on sex ratio of new born lambs.

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The objective of this study was to examine the effect of different pH extenders on semen characteristics and fetal sexing ratio of Rahmany sheep. The studying was included two trials. The first trail estimated the effect of incubation period on semen characteristics with different acidic values (6.9 to 6.4) and alkaline (7.1 to 7.6) media. Incubation semen was replicated with 18 pooled ejaculates collected from three rams and diluted with tris fructose extender (TFE). The second trial was used artificial insemination to define sex ratio of newborn using thirty ewes. The experimental ewes divided into two groups (15 each) G1 inseminated with pH 6.6, while, pH 7.3 serviced G2. Ewe's vagina washed before insemination by media 6.6 for Gl and 7.3 for G2. The results showed that sperm characteristics during incubation were higher (P<0.05) with pH between 6.9 and 6.6 than pH 6.5 and 6.4, while the difference in sperm characteristics from 6.9 to 6.6 was insignificant. Extenders with pH of 7.4-7.6 recorded decrease (P<0.05) in semen characteristics. However, pH between 7.1 and 7.3 yielded insignificant difference among semen characteristics through .incubation period. Insemination with pH 6.6 and pH 7.3 produced females’ sex ratio 66.67% and males lambing ratio 81.33%, respectively. It could be concluded that pH of semen affected on sex ratio of new born lambs.

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