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Effect of Different Concentrations of Fructose and Glycerol in Tris Citric Acid Extender on Post Thaw Quality and Fertility of Buffalo Bull Spermatozoa

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BACKGROUND: Fructose is considered a vital energy source for metabolic events occurring naturally in the seminal plasma of buffalo spermatozoa. OBJECTIVE: To explore the effect of different concentrations of fructose and glycerol in tris citric acid extender on post thaw quality and in vivo fertility of buffalo spermatozoa. MATERIALS AND METHODS: Semen was collected from three bulls through artificial vagina (42 °C). Two ejaculates were collected from each bull per collection day and were evaluated initially for consistency, volume, motility and concentration, followed by dilution in five extenders with supplements (Treatment 1: F0.1, G7 = fructose 0.1 % + glycerol 7 %; T2: F0.2, G7= fructose 0.2 % + glycerol 7 %; T3: F0.4, G6.5 = fructose 0.4 % + glycerol 6.5%; T4: F0.8, G6 = fructose 0.8 %, glycerol 6 %; T5: F1.0, G5 = fructose 1 % + glycerol 5 %). The experiment was replicated four times and the data were assessed with ANOVA. RESULTS: The results showed that percent progressive motility, plasma membrane integrity and supra-vital plasma membrane integrity of spermatozoa was significantly higher (P < 0.05) in extender supplemented with T5 than T1 and T2. Sperm hypo-resistivity, acrosome integrity and DNA integrity were significantly higher in extender supplemented with T5 than T1. Moreover, sperm in vitro quality was significantly higher in T5 than T1 during 30 and 60 min of incubation at 37 °C. Sperm in vivo fertility was significantly higher in extenders supplemented with T5 (57.3%) as compared to T1 (41.3%). CONCLUSION: It is concluded that extender supplemented with T5 improved post thaw semen quality and in vivo fertility of buffalo bull.
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Document Type: Research Article

Publication date: March 1, 2020

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  • CryoLetters is a bimonthly international journal for low temperature sciences, including cryobiology, cryopreservation or vitrification of cells and tissues, chemical and physical aspects of freezing and drying, and studies involving ecology of cold environments, and cold adaptation

    The journal publishes original research reports, authoritative reviews, technical developments and commissioned book reviews of studies of the effects produced by low temperatures on a wide variety of scientific and technical processes, or those involving low temperature techniques in the investigation of physical, chemical, biological and ecological problems.

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