シバヤギの妊娠期に見られる血漿アミノ酸濃度の数理学的特徴づけ
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概要
- 論文の詳細を見る
Development of convenient techniques to diagnose pregnancy status is important for efficient animal production. Considering that pregnancy is an exciting biological event in the maternal body, the metabolism of amino acids during this period might be different from other periods in life. Pregnant animals would then be distinguished from non-pregnant ones, if relative differences in plasma amino acid concentrations could be identified. In the present investigation, a linear discriminant analysis was performed to characterize specific and possibly unique aspects of plasma amino acid concentrations in pregnant animals. Pregnant group (PG, n=5) and non-pregnant group (NPG, n=5) of Shiba goats were subjected to this study at the Experimental Station for Bio-Animal Science, The University of Tokyo. On approximately 50th day after mating (day 0 = day of estrus), the animals pregnancy status was diagnosed by using an ultrasonography. In addition to body weight (BW) measurements, blood samples, from which plasma amino acid concentrations were determined, were obtained every week via the jugular vein from two groups of animals. Because variations of plasma amino acid concentrations (Ile, Leu, Glu and Tau) and BW in PG among pregnant days after mating were high (P<0.01), they were adjusted to the average days passed after mating (adjusted to 70th, 77th, 84th, 91st, 98th, 105th and 112th days). An effect of pregnant status was significant only for Glu (P<0.01). Correlations between BW and plasma amino acid concentrations of PG and NPG were low, suggesting that concentrations of these plasma amino acids were not affected directly by BW gain. Groups of PG and NPG were discriminated significantly using a linear discriminant model with plasma amino acid concentrations in the middle period of pregnancy (P<0.05). These results suggest that the pregnancy status can be evaluated easily and at low cost by using mathematical models and suitable weighted variables of biological factors such as plasma amino acid concentrations.
- 日本繁殖生物学会の論文
著者
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今川 和彦
東京大学大学院農学生命科学研究科動物育種繁殖学教室
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今川 和彦
東京大学 獣・動物育種
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IMAKAWA Kazuhiko
Laboratory of Animal Breeding, Faculty of Agriculture, The University of Tokyo
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須田 義人
東京大学大学院農学生命科学研究科・動物育種繁殖学研究室
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Sakai Senkiti
Laboratory of Animal Breeding, Veterinary Medical Science, The University of Tokyo, Tokyo 113-8657,
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Imakawa Kazuhiko
Laboratory Of Animal Breeding And Reproduction Department Of Veterinary Medical Sciences Graduate Sc
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今川 和彦
Laboratory of Animal Breeding, Veterinary Medical Science, The University of Tokyo
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SAWASAKI Toru
Experimental Station for Bio-Animal Science, Veterinary Medical Science, The University of Tokyo
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NAGAOKA Kentaro
Laboratory of Animal Breeding, Faculty of Agriculture, The University of Tokyo
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MATSUDA Fuko
Laboratory of Animal Breeding, Faculty of Agriculture, The University of Tokyo
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須田 義人
Laboratory of Animal Breeding, Veterinary Medical Sciences, The University of Tokyo
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永岡 謙太郎
Laboratory of Animal Breeding, Veterinary Medical Sciences, The University of Tokyo
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SAKAI Akiharu
Experimental Station for Bio-Animal Science, Veterinary Medical Sciences, The University of Tokyo
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YOSHIOKA Ken-ichi
Laboratory of Animal Breeding, Veterinary Medical Sciences, The University of Tokyo
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LI Jun
Experimental Station for Bio-Animal Science, Veterinary Medical Sciences, The University of Tokyo
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Suda Yoshihito
Laboratory Of Animal Breeding Veterinary Medical Sciences Graduate School Of Agriculture And Life Sc
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Suda Yoshihito
Laboratory Of Animal Breeding And Reproduction Department Of Veterinary Medical Sciences Graduate Sc
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Nagaoka Kentaro
Laboratory Of Animal Breeding Faculty Of Agriculture The University Of Tokyo
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MATSUDA Fuko
Laboratory of Animal Breeding, Veterinary Medical Sciences, The University of Tokyo
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SAWASAKI Toru
Experimental Station for Bio-Animal Science, Veterinary Medical Sciences, The University of Tokyo
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NAGAOKA Kentaro
Laboratory of Animal Breeding, Veterinary Medical Sciences, The University of Tokyo
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IMAKAWA Kazuhiko
Laboratory of Animal Breeding, Veterinary Medical Sciences, The University of Tokyo
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