Association between prepartum body condition score and prepartum and postpartum dry matter intake and energy balance in multiparous Holstein cows.

Autor:	Casaro S; Department of Large Animal Clinical Sciences, University of Florida, Gainesville, FL 32610., Pérez-Báez J; Instituto Nacional de Investigaciones Agropecuarias, Facultad de Ciencias Agronómicas y Veterinarias, Universidad Autónoma de Santo Domingo, Santo Domingo, Dominican Republic 10904., Bisinotto RS; Department of Large Animal Clinical Sciences, University of Florida, Gainesville, FL 32610., Chebel RC; Department of Large Animal Clinical Sciences, University of Florida, Gainesville, FL 32610., Prim JG; Department of Large Animal Clinical Sciences, University of Florida, Gainesville, FL 32610., Gonzalez TD; Department of Large Animal Clinical Sciences, University of Florida, Gainesville, FL 32610., Carvalho Gomes G; Department of Large Animal Clinical Sciences, University of Florida, Gainesville, FL 32610., Tao S; Department of Animal and Dairy Sciences, University of Georgia, Tifton, GA 31793., Toledo IM; Department of Animal Sciences, University of Florida, Gainesville, FL 32610., do Amaral BC; Department of Animal Sciences, University of Florida, Gainesville, FL 32610., Bollati JM; Department of Animal Sciences, University of Florida, Gainesville, FL 32610., Zenobi MG; Department of Animal Sciences, University of Florida, Gainesville, FL 32610., Martinez N; Department of Animal Sciences, University of Florida, Gainesville, FL 32610., Dahl GE; Department of Animal Sciences, University of Florida, Gainesville, FL 32610., Santos JEP; Department of Animal Sciences, University of Florida, Gainesville, FL 32610; D. H. Barron Reproductive and Perinatal Biology Research Program, University of Florida, Gainesville, FL 32610., Galvão KN; Department of Large Animal Clinical Sciences, University of Florida, Gainesville, FL 32610; D. H. Barron Reproductive and Perinatal Biology Research Program, University of Florida, Gainesville, FL 32610. Electronic address: galvaok@ufl.edu.
Jazyk:	angličtina
Zdroj:	Journal of dairy science [J Dairy Sci] 2024 Jul; Vol. 107 (7), pp. 4381-4393. Date of Electronic Publication: 2024 Jan 24.
DOI:	10.3168/jds.2023-24047
Abstrakt:	The objectives of this retrospective observational study were to investigate the association between BCS at 21 d before calving with prepartum and postpartum DMI, energy balance (EB), and milk yield. Data from 427 multigravid cows from 11 different experiments conducted at the University of Florida (Gainesville, FL) were used. Cows were classified according to their BCS at 21 d before calving as fat (BCS ≥ 4.00; n = 83), moderate (BCS = 3.25-3.75; n = 287), and thin (BCS ≤ 3.00; n = 57). Daily DMI from -21 to -1 and from +1 to +28 DIM was individually recorded. Energy balance was calculated as the difference between net energy for lactation consumed and required. Dry matter intake in fat cows was lower than that in moderate and thin cows both prepartum (fat = 9.97 ± 0.21, moderate = 11.15 ± 0.14, and thin = 11.92 ± 0.22 kg/d) and postpartum (fat = 14.35 ± 0.49, moderate = 15.47 ± 0.38, and thin = 16.09 ± 0.47 kg/d). Dry matter intake was also lower for moderate cows compared with thin cows prepartum, but not postpartum. Energy balance in fat cows was lower than in moderate and thin cows both prepartum (fat = -4.16 ± 0.61, moderate = -1.20 ± 0.56, and thin = 0.88 ± 0.62 Mcal/d) and postpartum (fat = -12.77 ± 0.50, moderate = -10.13 ± 0.29, and thin = -6.14 ± 0.51 Mcal/d). Energy balance was also lower for moderate cows compared with thin cows both prepartum and postpartum. There was a quadratic association between BCS at 21 d before calving and milk yield. Increasing BCS from 2.5 to 3.5 was associated with an increase in daily milk yield of 6.0 kg and 28 d cumulative milk of 147 kg. Increasing BCS from 3.5 to 4.5 was associated with a decrease in daily milk yield of 4.4 kg and 28 d cumulative milk of 116 kg. In summary, a moderate BCS at 21 d before calving was associated with intermediate DMI and EB pre- and postpartum but greater milk yield compared with thinner and fatter cows. Our findings indicate that a moderate BCS is ideal for ensuring a successful lactation. (The Authors. Published by Elsevier Inc. on behalf of the American Dairy Science Association®. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).)
Databáze:	MEDLINE
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