Growth Performance and Feed Intake Assessment of Italian Holstein Calves Fed a Hay-Based Total Mixed Ration: Preliminary Steps towards a Prediction Model.
calf welfare
dairy calves
feeding management
heifers
replacement herd
Journal
Veterinary sciences
ISSN: 2306-7381
Titre abrégé: Vet Sci
Pays: Switzerland
ID NLM: 101680127
Informations de publication
Date de publication:
03 Sep 2023
03 Sep 2023
Historique:
received:
10
07
2023
revised:
22
08
2023
accepted:
30
08
2023
medline:
27
9
2023
pubmed:
27
9
2023
entrez:
27
9
2023
Statut:
epublish
Résumé
The aim of this study was to evaluate the effects of a complete hay-based total mixed ration (TMR) for calves, focusing on their feed intake, animal growth performance, and fecal output, and to develop a preliminary estimation equation for solid feed intake and body weight in Holstein heifer calves. Twenty female Italian Holstein calves (37.14 ± 2.72 kg) born between February and July were studied from the day of birth until 77 days of age. From the fourth day of life, they were fed 3 L/day of pasteurized milk twice daily and supplemented with the same hay-based TMR. The data on feed intake, fecal characteristics, and growth performances were collected and showed that these calves had adequate parameters. Moreover, the data collected was used to create equations to predict body weight and solid feed intake using a mixed model. The goodness of fit of the developed equations was evaluated by coefficients of determinations (R
Identifiants
pubmed: 37756076
pii: vetsci10090554
doi: 10.3390/vetsci10090554
pmc: PMC10536390
pii:
doi:
Types de publication
Journal Article
Langues
eng
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