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Effects of Lysine and Methionine supplementation on first antler growth in fallow deer (Dama dama)
Small Ruminant Research ( IF 1.8 ) Pub Date : 2020-06-01 , DOI: 10.1016/j.smallrumres.2020.106119
Veit Ny , Radim Kotrba , Jamil Cappelli , Daniel Bureš , Mechie A. Clar , Andrés J. García , Tomás Landete-Castillejos , Luděk Bartoň , Francisco Ceacero

Abstract Amino acid supplementation in cervids is an almost unexplored research area. Lysine (Lys) and Methionine (Met) are the two amino acids considered as limiting for ruminants and Lys supplementation shows good potential for increased antler growth as it is the main component of collagen and a bone tissue precursor. However, several studies in other ruminants have shown greater effects when simultaneously supplementing Lys + Met. Two experiments based on Lys and Met supplementation during first antler growth were conducted during two consecutive years. Each experiment involved 45 yearling fallow bucks distributed in three groups, balanced by weight: Exp.1: Pasture, Pasture + Barley (0.2 kg/animal per day), and Pasture + Barley + Lys (5 g/animal per day); Exp.2: Pasture + Barley (0.5 kg/animal per day), Pasture + Barley + Lys (9 g/animal per day), and Pasture + Barley + Lys + Met (9 and 3 g/animal per day, respectively). Lys supplementation during the first experiment did not improve any antler characteristics (P > 0.05). However, in the second experiment, both Lys (9 g) and Lys + Met treatments had positive effects on the external antler characteristics (P = 0.013), antler weight (P = 0.061) and particularly on the burr perimeter (P = 0.008), which is crucial for antler size in following years. The results also suggest a stronger positive effect of amino acid supplementation on antler growth when the animals have a low performance in the presence of poorer pasturing situation.

中文翻译:

赖氨酸和蛋氨酸补充剂对小鹿(Dama dama)第一鹿角生长的影响

摘要 在鹿科动物中补充氨基酸是一个几乎未开发的研究领域。赖氨酸 (Lys) 和甲硫氨酸 (Met) 是被认为限制反刍动物使用的两种氨基酸,补充赖氨酸显示出促进鹿角生长的良好潜力,因为它是胶原蛋白的主要成分和骨组织前体。然而,在其他反刍动物中的多项研究表明,同时补充 Lys + Met 时效果更好。连续两年在第一次鹿角生长期间进行了两次基于 Lys 和 Met 补充剂的实验。每个实验涉及 45 只一岁的休耕雄鹿,分布在三组中,按重量平衡:实验 1:牧场、牧场 + 大麦(每天 0.2 公斤/动物)和牧场 + 大麦 + 赖氨酸(5 克/动物每天);Exp.2:牧场+大麦(每天0.5公斤/动物),牧场 + 大麦 + Lys(每天 9 克/动物)和牧场 + 大麦 + 赖氨酸 + Met(分别为每天 9 和 3 克/动物)。在第一次实验期间补充赖氨酸没有改善任何鹿角特征(P > 0.05)。然而,在第二个实验中,Lys (9 g) 和 Lys + Met 处理对外部鹿角特征 (P = 0.013)、鹿角重量 (P = 0.061) 尤其是毛刺周长 (P = 0.008) 都有积极影响,这对接下来几年的鹿角大小至关重要。结果还表明,当动物在较差的放牧条件下表现不佳时,氨基酸补充剂对鹿茸生长有更强的积极作用。在第一次实验期间补充赖氨酸没有改善任何鹿角特征(P > 0.05)。然而,在第二个实验中,Lys (9 g) 和 Lys + Met 处理对外部鹿角特征 (P = 0.013)、鹿角重量 (P = 0.061) 尤其是毛刺周长 (P = 0.008) 都有积极影响,这对接下来几年的鹿角大小至关重要。结果还表明,当动物在较差的放牧条件下表现不佳时,氨基酸补充剂对鹿茸生长有更强的积极作用。在第一次实验期间补充赖氨酸没有改善任何鹿角特征(P > 0.05)。然而,在第二个实验中,Lys (9 g) 和 Lys + Met 处理对外部鹿角特征 (P = 0.013)、鹿角重量 (P = 0.061) 尤其是毛刺周长 (P = 0.008) 都有积极影响,这对接下来几年的鹿角大小至关重要。结果还表明,当动物在较差的放牧条件下表现不佳时,氨基酸补充剂对鹿茸生长有更强的积极作用。这对接下来几年的鹿角大小至关重要。结果还表明,当动物在较差的放牧情况下表现不佳时,氨基酸补充剂对鹿茸生长有更强的积极作用。这对接下来几年的鹿角大小至关重要。结果还表明,当动物在较差的放牧条件下表现不佳时,氨基酸补充剂对鹿茸生长有更强的积极作用。
更新日期:2020-06-01
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