Influence of pathogens specific subclinical mastitis on oxidative status and mineral metabolism of yak

Biswas, Samar; Mukherjee, Reena; Chakravarti, Soumendu; Bera, Asit Kumar; Bandyopadhyay, S.; De, Ujjwal Kumar; Datta, Sanjoy

doi:10.1016/j.eas.2023.100028

Cited by 1 publication

(1 citation statement)

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“…The assessment of mastitis by means of visual examinations combined with the California Mastitis Test (see Table 1) revealed that none of the chauris assessed had mastitis. This was not an unexpected result because yaks and their hybrids traditionally have a lower incidence of mastitis compared to cattle [38]; however, a recent study by Biswas et al [39] identified subclinical mastitis in 16% of the quarters of a yak herd. The significant impact of mastitis on milk quality and safety combined with the importance of milk and its products to yak herders [39] suggests that the benefits of testing for mastitis when there are issues may more than justify the high proportion of tests during which no problems are identified.…”

Section: Discussionmentioning

confidence: 90%

Assessment of Welfare in Transhumance Yak Hybrids (Chauris) in the Lower Himalayan Region of Nepal

Sapkota,

Laven,

Barsila

et al. 2024

Ruminants

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In order to develop a yak/chauri-specific welfare assessment protocol, we sent a set of 31 potential welfare measures to 120 Nepalese experts and asked them to identify the measures that they thought would be useful and propose additional useful measures. Eighty-three experts responded, with 13 measures being identified by >50% of respondents as likely to be useful. These thirteen measures plus one new measure (hematology) were included in an assessment protocol that was tested in the second phase of this study in five chauri herds in two districts in northern Nepal. Animal-based evaluations along with sampling for mastitis, intestinal parasites, and hematology were undertaken during or just after morning milking. Resource- and record-based measures were assessed through structured interviews, with verifications on-site where possible. No chauris exhibited poor body conditions, skin injuries, significant locomotion issues, or significant subclinical mastitis. Fecal testing suggested a high prevalence of intestinal parasites at the herd level, while blood testing suggested no evidence of hematological abnormalities. However, for both results, we need more data to use these effectively as measures of welfare. The resource-based assessment revealed significant challenges across all resources, and veterinary services were reported as being inadequate. A high estimated annual mortality rate (10–21%) needs further investigation. This protocol provided a useful start towards developing a welfare assessment protocol for yak/chauri and identified issues that need addressing to optimize chauri welfare.

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Section: Discussionmentioning

confidence: 90%