Evaluation of Calcium Propionate and Propylene Glycol Administered into the Esophagus of Dairy Cattle at Calving |
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| Institution: | 2. USDA, Agricultural Research Service, National Animal Disease Center, Ames, IA 50010-0070;1. Department of Clinical Sciences, School of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran;2. Department of Animal Health Management, School of Veterinary Medicine, Shiraz University, Shiraz, Iran;3. Department of Basic Sciences, School of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran;4. FKA Agriculture and Animal Husbandry Company, Isfahan, Iran;5. College of Veterinary Medicine, University of Illinois, Urbana, USA |
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| Abstract: | A field study was conducted to evaluate the effects of oral drenching with additional energy or energy plus calcium on blood parameters and performance of fresh cows. Treatments were 9.5 L water (control), 9.5 L water plus 300 mL (310 g) propylene glycol (PG), or 9.5 L water plus 0.68 kg calcium propionate (CP). Cows received the assigned drench within 4 h of calving and again 24 h post-calving. Animals were bled prior to each drench and on d 4 and 10 of lactation. Animals were fed and managed by parity (primiparous vs multiparous) in a commercial setting. Health events were recorded during calving and for the first 15 d in milk (DIM). Milk records were evaluated from monthly test weights the first 4 mo in lactation. The addition of PG or CP did not affect either plasma calcium or glucose (P>0.05). Plasma nonesterified fatty acid levels were lower in animals receiving the PG drench as compared with animals receiving either the control or CP treatment (P<0.05). Plasma β-hydroxybutyrate was lowest at calving but was not affected by treatment. Health disorders (retained placenta, ketosis, hypocalcemia, displaced abomasum, metritis) were low across all treatment groups. Cattle receiving either PG or CP at calving had a significantly lower incidence of metritis compared with control animals (P<0.05). Averaged across all trial periods, animals receiving PG had 3.1 kg/d greater milk production than those receiving the control drench (P<0.05). |
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