تأثیر نمره بدنی و برخی از فاکتورهای مدیریتی بر بروز برخی از ناهنجاری های متابولیکی گاوهای هلشتاین

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه علوم دامی، دانشکده کشاورزی، دانشگاه ایلام، ایلام، ایران

2 مؤسسه تحقیقات علوم دامی کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، کرج، ایران

3 بخش تحقیقات علوم دامی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان چهارمحال بختیاری، سازمان تحقیقات، آموزش و ترویج کشاورزی، شهرکرد، ایران

10.22034/AEJ.2021.280580.2497

چکیده

این پژوهش برای ارزیابی نمره وضعیت بدنی در دوره خشکی و زمان گوساله ­زایی بر بروز ناهنجاری ­های متابولیکی گاوهای هلشتاین استان اصفهان انجام شد. تعداد 5138 رکورد زایش از زایش ­های مختلف از سال 1395 استخراج شد. داده ­ها شامل شماره دام، سال زایش، ماه زایش، اسکور زمان زایش، طول دوره خشکی، طول دوره آبستنی، وزن تولد گوساله، جنس گوساله، تعداد گوساله ­های متولد شده در هر زایش، جفت ماندگی، سخت زایی، مرده ­زایی و متریت بود. به منظور یکنواختی، داده ­ها در کلاس ­های مختلف طبقه بندی شدند. داده های به دست آمده با استفاده از نرم افزار SAS 9.4  با رویه GLIMMIX تجزیه شدند. نتایج پژوهش حاضر نشان داد که میزان تغییر نمره وضعیت بدنی بر بروز ناهنجاری های متابولیکی (جفت ماندگی، سخت زایی، مرده زایی و متریت) بی معنی گزارش شد. در این بررسی تاثیر شکم زایش بر جفت ماندگی، سخت زایی، مرده زایی و متریت معنی دار گزارش شد (0/01P ). تاثیر وزن تولد گوساله بر جفت ماندگی (وزن های کم تر از 35 کیلوگرم و بالاتر از 46 کیلوگرم)، سخت زایی و مرده زایی (گوساله ­های با وزن 46 کیلوگرم) و متریت معنی ­دار مشاهده شد (0/01P). اثر طول دوره خشکی بر بروز جفت ماندگی، سخت زایی و متریت اختلاف معنی ­دار گزارش شد (0/01P). اثر طول دوره آبستنی بر جفت ماندگی اختلاف معنی­ دار گزارش شد (0/01P). اما تاثیر آن بر بروز مرده زایی معنی داری گزارش نشد. علاوه بر این ها تاثیر فصل زایش بر بروز جفت ماندگی و متریت معنی ­دار مشاهده شد (0/01P).

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

The effect of body score and some management factors on the incidence of some metabolic disorders in Holstein cows

نویسندگان [English]

  • Mohammad Darveshi 1
  • Yahya Mohammadi 1
  • Farshid Fatahnia 1
  • Mehdi Bahrami Yekdangi 2
  • Golnaz Tassoli 3
  • Mohammad Shamsolahi 1
1 Department of Animal Science, Faculty of Agriculture, Ilam University, Ilam, Iran
2 Research Institute of Animal Sciences, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran
3 Department of Animal Science, Chahatmahal Bakhtiari Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Shahrekord, Iran
چکیده [English]

This study was performed to evaluate the body condition score in drought period and calving time on the incidence of metabolic diseases in Holstein cows in Isfahan province. 5138 birth records were extracted from different births since 1395. Data included livestock number, year, of calving, month of calving, length of drought period, length of gestation period, calf birth weight, calf sex, number of calves born per calving, retain placenta, dystocia, stillbirth and metritis. For uniformity, the data were classified into different classes. Data were analyzed using SAS 9.4 software using GLIMMIX procedure. The results of the present study showed that the rate of change in physical condition score on the incidence of metabolic diseases (placenta, dystocia, stillbirth and metritis) was reported to be insignificant. In this study, the effect of calving abdomen on retain placental relation, hardening, stillbirth and metritis was reported significantly (p≤0.01). The effect of calf birth weight on retain placenta (Weights less than 35 kg and more than 46 Kg), dystocia and stillbirth (calves weighing 46 kg) and metritis were observed (p≤0.01). Effect of drought duration on retain placenta incidence (Less than 45 days' drought period and 61-100 days' drought period with 46-60 days) day and dry period 61 – 100 days (with a period of 46-60 days) a significant difference was reported (p≤0.01). The effect of gestational age on retain placenta was significantly different (p≤0.01). But its effect on stillbirth was not reported to be significant. The effect of calving season on the incidence of retain placenta and metritis was significant (p≤0.01).

کلیدواژه‌ها [English]

  • Body condition score
  • Metabolic diseases
  • Metritis
  • Retain placenta
  • Dystocia
  • Stillbirth
  • Holstein Cows
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