{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,24]],"date-time":"2026-06-24T07:49:50Z","timestamp":1782287390430,"version":"3.54.5"},"reference-count":64,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2026,6,20]],"date-time":"2026-06-20T00:00:00Z","timestamp":1781913600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Veterinary Sciences"],"abstract":"<jats:p>This study investigated the associations among dam lactation number, passive immunity transfer, internal parasite burden, and weaning performance in female calves. Early consumption of high-quality colostrum is critical for effective passive immunity transfer, calf health, and long-term productivity. Colostrum composition may vary with management practices and dam lactation number, potentially influencing immunity and disease susceptibility. Forty-five cows and their female offspring (n = 45) were allocated to three groups by lactation number: first lactation (LAC1), second lactation (LAC2), and third lactation (LAC3) (15 cows and 15 calves per group). Calf birth weight was recorded. Colostrum immunoglobulin G (IgG) concentration was measured using a colostrometer and refractometer, and chemical composition (fat, protein, and non-fat solids) was analyzed. Fecal samples collected at 30, 60, and 90 days of age were examined for Eimeria spp. Colostrum IgG concentration, \u00b0Brix percentage, specific gravity, and non-fat solids did not differ among lactation groups (p &gt; 0.05). LAC3 cows had higher colostrum protein content, while LAC1 cows had greater fat concentration (p &lt; 0.05). Calves from LAC1 dams were lighter at birth than those from LAC2 and LAC3 dams (p &lt; 0.001). The prevalence of Eimeria spp. was not influenced by lactation number, birth weight, or colostrum quality (p &gt; 0.05), but treatment costs were higher in calves from LAC3 dams (p &lt; 0.01). In conclusion, lactation number affected colostrum composition and calf growth but did not alter IgG concentration, underscoring the importance of effective colostrum management to improve calf performance and dairy system sustainability.<\/jats:p>","DOI":"10.3390\/vetsci13060600","type":"journal-article","created":{"date-parts":[[2026,6,24]],"date-time":"2026-06-24T05:37:17Z","timestamp":1782279437000},"page":"600","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Impact of Dam Lactation Number on Colostrum Quality, Calf Growth, and Economic Performance in Holstein Cows"],"prefix":"10.3390","volume":"13","author":[{"given":"Andrea","family":"Garc\u00eda-Mendoza","sequence":"first","affiliation":[{"name":"Facultad de Agronom\u00eda y Veterinaria, Universidad Aut\u00f3noma de San Luis Potos\u00ed, San Luis Potos\u00ed 78321, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0175-0466","authenticated-orcid":false,"given":"Milagros","family":"Gonz\u00e1lez-Hern\u00e1ndez","sequence":"additional","affiliation":[{"name":"Facultad de Agronom\u00eda y Veterinaria, Universidad Aut\u00f3noma de San Luis Potos\u00ed, San Luis Potos\u00ed 78321, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Delia X.","family":"Vega-Manriquez","sequence":"additional","affiliation":[{"name":"Facultad de Agronom\u00eda y Veterinaria, Universidad Aut\u00f3noma de San Luis Potos\u00ed, San Luis Potos\u00ed 78321, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Erika","family":"F\u00e9lix-Santiago","sequence":"additional","affiliation":[{"name":"Facultad de Agronom\u00eda y Veterinaria, Universidad Aut\u00f3noma de San Luis Potos\u00ed, San Luis Potos\u00ed 78321, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mar\u00eda del Refugio","family":"P\u00e9rez-Barba","sequence":"additional","affiliation":[{"name":"Facultad de Ciencias Qu\u00edmicas, Universidad Aut\u00f3noma de San Luis Potos\u00ed, San Luis Potos\u00ed 78210, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3414-338X","authenticated-orcid":false,"given":"C\u00e9sar A.","family":"Rosales-Nieto","sequence":"additional","affiliation":[{"name":"Facultad de Agronom\u00eda y Veterinaria, Universidad Aut\u00f3noma de San Luis Potos\u00ed, San Luis Potos\u00ed 78321, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,6,20]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"756","DOI":"10.5713\/ajas.2009.r.06","article-title":"Perinatal Nutrition of the Calf and Its Consequences for Lifelong Productivity","volume":"22","author":"Wynn","year":"2009","journal-title":"Asian-Australas. 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