Predicting Disease in Transition Dairy Cattle Based on Behaviors Measured Before Calving
نویسندگان
چکیده
منابع مشابه
Cross Breeding in Dairy Cattle: The Effect on Calving Ease
Calving traits for frequently used dairy breeds and crossbreeds were investigated using calving records collected in Australia over a period of 18 years. Dystocia (calving difficulty) was highest for heifers calving to Holstein-Friesian bulls, and Jersey calves caused the least dystocia. Incidence of dystocia in Holsteins was influenced by the season (gestation lengths were longer in winter, re...
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Dairying has become an important secondary source of income for millions of rural families and has assumed a most important role in providing employment and income generating opportunity. There has been tremendous progress in dairy production in the country during the last three decades and it has contributed to national income significantly At present milk production in India is about 109.8 mi...
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Background Keratoconus (KCN) is a bilateral, progressive, and non-inflammatory disorder in the cornea, which results in thinning and protrusion of the cornea. Objective This study aims to determine the effectiveness of using pachymetric progression indices (PPIs) in grading the severity of KCN disease. Methods In this study, 76 patients with different stages of KCN were enrolled. The severit...
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Trends since 1980 for calving age and calving interval, 2 factors that influence herd life, were examined by parity for 5 breeds of US dairy cattle. Calving data were from cows with records that passed edits for USDA genetic evaluations and were in herds that remained on Dairy Herd Improvement test. First-calf heifers calved at progressively younger ages over time, but the age decline was less ...
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Calving complications have an incidence on the economic profitability of dairy herds. In the Walloon Region of Belgium, calving ease data recording is being done on voluntary basis since 2000. This allows now the implementation of a genetic evaluation of Holstein dairy cattle addressing the need of dairy breeders to select bulls in order to reduce frequency of calving problems. Calving ease sco...
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ژورنال
عنوان ژورنال: Animals
سال: 2020
ISSN: 2076-2615
DOI: 10.3390/ani10060928