Abstract
This study examined the impact of supplementing rumen-inert dry saturated free fatty acid prills (SFAP) using seven crossbred dairy cows in mid-lactation with a mean parity of 3. The first 20 days of experiment constituted control (CON), fed with no supplement, followed by treatment (FAT) phase spanning 40 days, during which all cows received supplemental SFAP at 1.6% of DMI (200 g/d). The basal diet comprised of 58:42 proportion of forage-to-concentrate throughout the study. Results revealed that dry matter intake (DMI) did not differ between the groups; however, intakes of metabolisable and net energy for lactation (NEL) tended (P = 0.06) to be higher in group FAT. Furthermore, yields of 4% fat-corrected milk (FCM), fat, solid-not-fat increased (P ≤ 0.05) in group FAT than CON with a better (2.82 vs. 2.61; P ≤ 0.01) body condition score (BCS) observed in the former group. In addition, feed efficiency was higher (P ≤ 0.05) in group FAT when expressed as 4% FCM ÷ DMI (1.12 vs. 1.05) and 4% FCM ÷ Mcal NEL intake (0.85 vs. 0.81). Regarding economics, it was evident that income over feed cost was higher by 15.5% in group FAT with a concomitant reduction in feeding cost/kg 4% FCM by 4.51% in the same group leading to a better profitability. This study concludes that supplementation of SFAP at 1.6% of DMI in tropical crossbred cows propitiously benefits lactational performance by augmenting 4% FCM production and BCS in an efficient and economical way, thus bolstering sustainable dairying.
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22 May 2023
A Correction to this paper has been published: https://doi.org/10.1007/s40011-023-01500-4
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Acknowledgements
Author acknowledges Cargill Premix and Nutrition, Provimi Animal Nutrition India Pvt. Ltd., Bengaluru for supporting this study. Helpful inputs by field staff in data collection, and R&D for statistical analysis are thankfully acknowledged.
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Significance Statement
This on-farm trial assesses the response of dairy cows to supplemental vegetable free fatty acid prills having an almost equal proportion of palmitic and stearic acids to boost the overall milk performance for a profitable dairying under Indian context.
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Mahesh, M.S. Palmitic- and Stearic Acid-based Dry Vegetable Fat Prills Augment Milk Performance of Crossbred Dairy Cows. Proc. Natl. Acad. Sci., India, Sect. B Biol. Sci. 92, 553–559 (2022). https://doi.org/10.1007/s40011-021-01315-1
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DOI: https://doi.org/10.1007/s40011-021-01315-1