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首页> 外文期刊>Tropical Animal Health and Production >Influence of feeding level on live body weight and semen characteristics of Sardinian rams reared under intensive conditions
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Influence of feeding level on live body weight and semen characteristics of Sardinian rams reared under intensive conditions

机译：饲喂水平对强养条件下撒丁岛公羊活体重和精液特性的影响

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摘要

The aim of the present study was to assess the effects feeding level on body weight changes and semen parameters in adult Sardinian rams reared under intensive conditions in a semi-arid area of southern Italy. During an experimental period of 90 days, 24 healthy Sardinian rams were divided into three equal groups that differed in their feeding level, in terms of concentrate amount. The control-concentrate (CC; n = 8) group received 1.0 times their maintenance requirements, the medium-concentrate (MC; n = 8) group received a diet that supplied 1.2 times their maintenance requirements, and high-concentrate (HC, n = 8) group received a diet that supplied 1.5 times their maintenance requirements. Mixed vetch–oat hay was offered ad libitum to ram groups and water and mineral licks were freely available. Body weight and feed intake was recorded weekly, and semen characteristics were determined every 2 weeks. Dietary treatment affected final body weight (P < 0.01) as feeding level increased. Total dry matter and protein intake changed significantly (P < 0.05 and P < 0.01, respectively) among experimental groups. Semen volume and concentration were positively influenced by feeding level for HC group, whereas no differences were observed in sperm viability and scrotal circumference of rams. It was concluded that dietary level with higher concentrate supplementation resulted in improved body weight gain, feed intake, sperm production, and semen quality in Sardinian rams.
机译：本研究的目的是评估在意大利南部半干旱地区密集饲养的撒丁岛成年公羊体重变化和精液参数的影响。在90天的实验期内，将24只健康的撒丁岛公羊分为三个相等的组，这三组公羊的进食水平因精矿量而异。对照集中（CC; n = 8）组的饮食量是其维持需求的1.0倍，中浓度（MC; n = 8）组的饮食所提供的营养素是其维持需求的1.2倍，而高浓度（HC，n = 8）组接受的饮食所提供的营养为其维持需求的1.5倍。随机向公羊群提供混合的紫etch麦干草，水和矿物质舔可免费获得。每周记录体重和采食量，每2周测定一次精液特征。饮食治疗会随着饲料水平的提高而影响最终体重（P <0.01）。实验组中总干物质和蛋白质摄入量发生显着变化（分别为P <0.05和P <0.01）。 HC组的精液量和浓度受饲喂量的影响呈正相关，而公羊的精子活力和阴囊周长没有差异。结论是，在撒丁岛公羊中，饮食水平上添加更高浓度的浓缩物可以改善体重增加，采食量，精子产生和精液质量。

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