13 research outputs found

    Some Meat Characteristics in Karya Lambs

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    A research was conducted during 2008 and 2009 to determine meat quality characteristics in 72 male and female Karya lambs in pasture, pasture plus feeding and intensive conditions. Significant differences were obtained between fattening groups in M. Longissimus Dorsi muscle for L* (lightness) and the highest value was calculated in intensive groups and male lambs. Also the meat colour appeared redder (high a* value) in this group and their male lambs. The intermusculer fat (marbling) was evaluated better in intensive group and male lambs. Regarding fatty acid composition, while SFA and MUFA were increased in intensive conditon, C16:0 was the highest, C18:0 and C18:1 n-9 were the lowest value in pasture lambs. İt is concluded that the pasture feeding increased P/S, CLA and n-6 PUFA/n-3 PUFA values.Animal Production 15(2):127-134, May 201

    Daily administration of a GnRH analogue enhances sperm quality in bucks during the non-breeding season

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    The aim of this study was to determine if daily administration of a GnRH analogue (buserelin acetate) to bucks during the non-breeding season increases testosterone concentration and improves sperm quality. Five bucks received a daily dose of buserelin for 10 days, starting on Day 0 (first administration), and another five bucks remained as controls. Testosterone concentrations were greater in treated than in control bucks during the first hours after buserelin administration (P = 0.05), but greater in controls 10 h later (P < 0.01). Sperm mass motility and percentage of motile sperm were greater in treated (3.9 ± 0.6 and 70.1 ± 7.9%, respectively) than in control bucks (1.0 ± 0.6, P < 0.01; 45.0 ± 7.9%, P < 0.05 respectively) on Day 4. Percentage of sperm with normal morphology tended to be greater in treated than in control bucks (81.8 ± 6.2% compared with 63.5 ± 6.4% respectively, P = 0.08). The treatment decreased the percentage of sperm with mid piece defect and with bent tail (7.0 ± 1.5% compared with 12.0 ± 1.5%; 8.0 ± 1.7% compared with 13.5 ± 1.7%, treated and control bucks, respectively, P = 0.05 for both). The square root percentage of sperm with loose but heads with normal structures tended to be less in treated than control bucks (1.3 ± 0.3% compared with 0.4 ± 0.3% respectively, P = 0.06). It was concluded that daily administration of buserelin during the non-breeding season led to a rapid increase in testosterone concentration and improved sperm quality
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