A short-term comparison of wheat straw and poplar wood chips used as litter in tiestalls on hygiene, milk, and behavior of lactating dairy cows
Simoni, M. (Università degli Studi di Parma. Dipartimento di Scienze Medico-Veterinarie)
Mezzasalma, N. (Università degli Studi di Parma. Dipartimento di Scienze Medico-Veterinarie)
Pitino, R. (Università degli Studi di Parma. Dipartimento di Scienze Medico-Veterinarie)
Manuelian, Carmen L (Universitat Autònoma de Barcelona. Departament de Ciència Animal i dels Aliments)
Spadini, C. (Università degli Studi di Parma. Dipartimento di Scienze Medico-Veterinarie)
Iannarelli, M. (Università degli Studi di Parma. Dipartimento di Scienze Medico-Veterinarie)
Montanaro, S.L. (Università degli Studi di Parma. Dipartimento di Scienze Medico-Veterinarie)
Summer, A. (Università degli Studi di Parma. Dipartimento di Scienze Medico-Veterinarie)
Cabassi, C.S. (Università degli Studi di Parma. Dipartimento di Scienze Medico-Veterinarie)
De Marchi, Massimo (Università degli Studi di Padova. Dipartimento di Agronomia animali alimenti risorse naturali e ambiente)
Righi, F. (Università degli Studi di Parma. Dipartimento di Scienze Medico-Veterinarie)

Publicación:	American Dairy Science Association, 2023
Resumen:	A short-term study was conducted to compare the effect of using poplar wood chips (PWC) instead of wheat straw (WS) litter in dairy cows. A total of 38 lactating Holstein cows (204 ± 119 days in milk, 26. 9 ± 6. 5 kg of milk yield [MY]) were housed in a tiestall farm for a 10-d trial including 5 d of adaptation followed by 5 sampling days (from d 5 to 10). Cows were divided into 2 homogeneous groups: one group was bedded with WS, and the second with PWC. Both litter materials were provided in the amount of 7 kg/stall per d. Each group was composed of 3 subgroups of 6 or 7 cows; the subgroups were physically separated along the feeding line by wooden boards. During the sampling days, fecal composition, used litter composition, and bacterial count (Clostridium spp. , Salmonella spp. , Escherichia coli, Lactobacillus, and total bacterial count) were analyzed by subgroup twice a day. On d 1 and from d 5 to 10, udder hygiene score and cow cleanliness score were also evaluated individually twice a day. Meanwhile MY, milk hygiene (total bacterial count [TBC], coliform bacterial count [CBC], and spore-forming unit [SFU]) and quality were measured and analyzed from 9 animals per group. Moreover, individual animal behavior (body position and behavioral traits) and subgroup dry matter intake were measured on d 9 and 10. Fecal dry matter did not differ between groups, PWC had the lowest used litter moisture and N content favoring the highest clean cow frequency, but also gave rise to the greatest used litter microbial contamination. The MY, milk quality, TBC, SFU, and CBC were similar. The lying behavior frequency was similar between groups. However, the PWC group showed the lowest sleeping frequency, the highest frequency of other behaviors (including discomfort signs), and the lowest dry matter intake. However, despite this apparent reduction in cow comfort, no biologically important differences were observed in this short-term study between cows on PWC and WS in milk production or hygiene.
Ayudas:	European Commission. Horizon 2020 774340
Derechos:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Lengua:	Anglès
Documento:	Article ; recerca ; Versió publicada
Materia:	Bedding materials ; Milk composition ; Organic ; Total bacterial count
Publicado en:	Journal of dairy science, ISSN 1525-3198

DOI: 10.3168/jds.2022-22811
PMID: 37641355

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