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Becú-Villalobos, D., García-Tornadú, I., Schroeder, G., Salado, E.E., Gagliostro, G., Delavaud, C., Chilliard, Y. and Lacau-Mengido, I.M. (2007) Effect of Fat Supplementation on Leptin, Insulin-Like Growth Factor I, Growth Hormone, and Insulin in Cattle. The Canadian Journal of Veterinary Research, 71, 218-225.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1899869

has been cited by the following article:

• TITLE: Performance of Dairy Cows Supplemented with By-Pass Fat under Heat Stress Conditions

  AUTHORS: Pablo Matías Roskopf, María Paz Tieri, Alejandra Cuatrin, María Esperanza Ceron Cucchi, José Ignacio Gere, Eloy Eduardo Salado

  KEYWORDS: Dairy Cattle, By-Pass Fat, Heat Stress

  JOURNAL NAME: Open Journal of Animal Sciences, Vol.13 No.1, January 9, 2023

  ABSTRACT: The objective of this study was to determine the effect of supplementation with a protected fat source on the productive response, metabolic environment and physiological indicators in Holstein cows under heat stress conditions during a 12-week experimental period. Thirty Holstein cows were distributed in 15 blocks by parity (2.0 ± 1.1), days in milk (182 ± 80) and milk production (29.4 ± 5.7 kg·day-1) at the beginning of the trial and randomly assigned within each block to the following treatments (diets): SPF: supplementation with protected fat or WPF: without supplementation with protected fat. All the cows were kept in a dry-lot where they were given a partial mixed ration (PMR) ad libitum while in the milking parlor they received individual supplementation depending on the treatment. The SPF diet contained 4.0 kg·day-1 concentrate in pellet form + 0.6 kg·day-1 ground corn grain + 0.7 kg·day-1 protected fat, while the WPF diet was similar to that offered in SPF, but the protected fat was isoenergetically replaced by ground corn grain. The fat supplement contained fats of animal and vegetable origin and microencapsulation was used for its preparation. Total dry matter and metabolic energy intakes were similar (p > 0.05) between treatments. Fat corrected milk (4% FCM) production was higher (p = 0.04), while energy corrected milk and fat productions tended (p = 0.06) to be higher in cows from the SPF group, without effects (p > 0.05) on the rest of the milk production and composition parameters. These results could be attributed to an improvement in the efficiency of the use of the energy consumed. Protected fat supplementation neither modified the metabolic profile, nor reduced the respiratory rate and body temperature of heat-stressed cows. Future research is needed to explain this latter result.