نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشجوی دکتری تخصصی فیزیولوژی دام، گروه مهندسی علوم دامی، دانشکدگان کشاورزی و منابع طبیعی دانشگاه تهران، البرز، کرج، ایران.
2 استاد فیزیولوژی دام، گروه مهندسی علوم دامی، دانشکدگان کشاورزی و منابع طبیعی دانشگاه تهران، البرز، کرج، ایران.
3 استاد تغذیه دام، گروه مهندسی علوم دامی، دانشکدگان کشاورزی و منابع طبیعی دانشگاه تهران، البرز، کرج، ایران.
4 دانشیار دامپزشکی، گروه مامایی و بیماری‌های تولیدمثلی دام، دانشکده دامپزشکی دانشگاه تهران، تهران، ایران.
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
This study investigated the effects of Floresis postbiotic supplementation on the health and productive performance of Holstein dairy cows. Twenty multiparous Holstein cows (parity ≥2) were randomly allocated to two groups in a completely randomized design: a control group (no postbiotic) and a treatment group receiving 500 g/day of Floresis postbiotic. The experimental period spanned from 21 days prepartum—including a 7-day adaptation period—to 49 days postpartum. Milk and fecal samples were collected at defined intervals (milk: days 3, 14, 28, and 49 postpartum; feces: day 14 prepartum and day 49 postpartum). Production parameters included milk yield and composition (fat, protein, lactose, and somatic cell count). Health indicators included body condition score, body weight, dry matter intake, rectal temperature, respiratory rate, heart rate, fecal score, and fecal coliform counts.
Postbiotic supplementation significantly increased milk yield (30.42 vs. 26.85 kg/day; P < 0.05), and improved milk composition, including fat content (P < 0.01), protein and lactose percentages and yields (P < 0.01), and reduced somatic cell count (P < 0.01). Additionally, rectal temperature (P < 0.01) and heart rate (P ≤ 0.02) were improved in the treatment group, suggesting better physiological stability. No significant differences were observed in other measured parameters. These findings indicate that Floresis postbiotic can be a safe and effective supplement for improving the health and productive performance of dairy cows
کلیدواژه‌ها [English]
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