Relationship between Peak Milk Yield and Udder Parameters of Dehong Crossbred Dairy Buffaloes

محورهای موضوعی : Camel

ز.بی. گو ¹ (Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China)
اس.ال. یانگ ² (Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China|Yunnan Provincial Key Laboratory of Animal Nutrition and Feed Science, Kunming 650201, China)
جی. وانگ ³ (Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China|Yunnan Provincial Key Laboratory of Animal Nutrition and Feed Science, Kunming 650201, China)
سی. ما ⁴ (Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China|Yunnan Provincial Key Laboratory of Animal Nutrition and Feed Science, Kunming 650201, China)
ی. چن ⁵ (Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China|Yunnan Provincial Key Laboratory of Animal Nutrition and Feed Science, Kunming 650201, China)
وی.ال. هو ⁶ (Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China|Yunnan Provincial Key Laboratory of Animal Nutrition and Feed Science, Kunming 650201, China)
اس.کا. تنگ ⁷ (Bureau of Animal Husbandry and Veterinary Medicine, Mangshi, 678499, China)
اچ.اس. ژو ⁸ (Bureau of Animal Husbandry and Veterinary Medicine, Mangshi, 678499, China)
سی.بی. لیو ⁹ (Bureau of Animal Husbandry and Veterinary Medicine, Mangshi, 678499, China)
تی. چن ¹⁰ (Bureau of Animal Husbandry and Veterinary Medicine, Mangshi, 678499, China)
ایکس.اچ. فو ¹¹ (Bureau of Animal Husbandry and Veterinary Medicine, Mangshi, 678499, China)
اس.اچ. زیو ¹² (Stock Station of Dehong State, Mangshi, 678499, China)
ز.پی. شی ¹³ (Stock Station of Dehong State, Mangshi, 678499, China)
آر.اس. لی ¹⁴ (Stock Station of Dehong State, Mangshi, 678499, China)
جی.دی. می ¹⁵ (Stock Station of Dehong State, Mangshi, 678499, China)
اچ.ام. مااُ ¹⁶ (Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China|Yunnan Provincial Key Laboratory of Animal Nutrition and Feed Science, Kunming 650201, China)

تاریخ دریافت : 1395/12/02 تاریخ پذیرش : 1395/12/25 تاریخ انتشار : 1396/12/10

کلید واژه: dairy buffaloes, peak milk yield, udder and teat dimensions,

چکیده مقاله :

To determine the relationship between udder traits and peak milk yield, udder parameters of 203 Dehong crossbred dairy buffaloes were measured. The average peak milk yield (kg/day) of buffaloes was 9.60 ± 2.73, with average udder dimensions of 16.51 ± 10.05, 8.07 ± 3.26, 8.68 ± 3.92, 50.74 ± 8.82, 11.38 ± 3.08, 7.18 ± 2.18 and 7.73 ± 2.15 cm for udder depth, rear udder width, rear udder height, udder length, distance of fore teats, distance of rear teats, and distance of fore-rear teats, respectively. The peak milk yield was negatively correlated with udder depth (r=-0.28, P

چکیده انگلیسی:

برای تعیین رابطه بین صفات پستانی و اوج تولید شیر، پارامترهای پستانی 203 گاومیش آمیخته شیری دِهانگ اندازه­گیری شد. میانگین تولید شیر (کیلوگرم در هر روز) گاومیش­ها 73/2 ± 60/9 بوده و میانگین ابعاد پستان برای صفات عمق پستان، عرض پستان عقب، ارتفاع پستان عقب، طول پستان، فاصله سرپستانک­های جلویی، فاصله سرپستانک­های عقبی و فاصله سرپستانک­های جلویی و عقبی به ترتیب برابر با 05/10 ± 51/16، 26/3 ± 07/8، 92/3 ± 68/8، 82/8 ± 74/50، 08/3 ± 38/11، 18/2 ± 18/7 و 15/2 ± 73/7 سانتی­متر بود. همبستگی اوج تولید شیر با عمق پستان منفی بوده (28/0 -=r و 01/0>P) و همبستگی آن با سایر پارامترهای پستانی (عرض پستان عقبی (24/0=r و 01/0>P)، ارتفاع پستان عقب (32/0=r و 01/0>P)، طول پستان (34/0=r و 01/0>P)، فاصله پستان عقب (20/0=r و 01/0>P)، فاصله سرپستانک­های جلویی و عقبی (40/0=r و 01/0>P)، طول سرپستانک جلویی سمت چپ (25/0=r و 01/0>P)، طول سرپستانک عقبی سمت چپ(29/0=r و 01/0>P)، طول سرپستانک جلویی سمت راست (22/0=r و 01/0>P) و طول سرپستانک عقبی سمت راست (25/0=r و 01/0>P) مثبت بوده است. ولی هیچ همبستگی معنی­داری بین اوج تولید شیر و سیاهرگ پستانی و ترکیب سرپستانک دیده نشد. نتایج این مطالعه نشان داد که طول پستان بیشترین ارتباط را با اوج تولید شیر دارد. با توجه به اینکه پارامترهای پستانی توزیع نرمال دارند، می­توان فرآیند ارزیابی در انتخاب زودرس گاومیش­های شیری پرتولید را بر مبنای تجارب حاصل از قوانین امتیازدهی گاوهای هلشتاین اجرا نمود.

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