Influence of diet moisture content on behavioral, feeding, and productive parameters of lactating Holstein cows

Kauani Borges  Cardoso; Jordani Borges  Cardoso; Tatiane Peres  Marques; Camila Pizoni; Eduardo Schmitt; Cássio Cassal  Brauner

doi:10.4025/actascianimsci.v48i1.74090

Kauani Borges Cardoso Universidade Federal de Pelotas https://orcid.org/0000-0002-1553-9725
Jordani Borges Cardoso Universidade Federal de Pelotas https://orcid.org/0000-0001-9614-1542
Tatiane Peres Marques Universidade Federal de Pelotas https://orcid.org/0009-0006-0629-5534
Camila Pizoni Universidade Federal de Pelotas https://orcid.org/0000-0003-4765-9294
Eduardo Schmitt Universidade Federal de Pelotas https://orcid.org/0000-0003-1900-3968
Cássio Cassal Brauner Universidade Federal de Pelotas https://orcid.org/0000-0001-5248-2476

DOI: https://doi.org/10.4025/actascianimsci.v48i1.74090

Resumo

This study aimed to evaluate the effect of dry matter content on the feeding behavior and milk production of Holstein cows. The study was conducted on lactating, multiparous Holstein cows. To assess feeding behavior, automatic feeders (Intergado®, Brazil) were used. The duration of rumination and activity was quantified using electronic collars (Chip Inside, Brazil). The diets were classified according to their dry matter content: high (> 60%), medium (45 to 59%), and low (< 45%). The NCSS statistical program (2005) was employed for statistical analysis. The data were subjected to analysis of variance (GLM-ANOVA), and when statistical differences were identified (p < 0.05), the Tukey-Kramer test was performed for mean comparisons. The Holstein cows that received a diet with a low dry matter content (< 45%) exhibited a reduction in intake (p < 0.001), an increase in milk production (p < 0.001), an extension in rumination time, and a reduction in activity time (p < 0.002). In conclusion, variations in the dry matter content of the diet have an impact on the feeding behavior and milk production of Holstein cows.

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