Effect of replacing soybean meal with peanut meal on milk production and fat composition in lactating dairy cows

Flávio Soares dos Santos, Ricardo Dias Signoretti, Juliana Silva de Oliveira, Gabriel Teodoro da Silva, Marcelo de Oliveira Alves Rufino, Carla Giselly de Souza, Jessyca Karen Pinheiro, Severino Gonzaga Neto

Research output: Contribution to journalArticlepeer-review

Abstract

The objective of this study was to evaluate the effects of replacing soybean meal with peanut meal on milk production, chemical and fatty acid composition, nutritional quality indicators of the lipid fraction, and the economic viability of the diets. Twelve crossbred cows in the initial lactation third, with a bodyweight of 545± 37 kg and average milk production of 28 kg/day of milk were distributed in a 4× 4, triple Latin square design. The treatments consisted of diets with substitution levels of soybean meal for peanut meal (0; 330; 670; and 1000 g/kg in DM). The peanut meal inclusion to replace soybean meal in the diets provided a decreasing linear effect for the protein (P = 0.02) and casein (P = 0.01) concentration in milk. Milk production, total solids concentration, feed efficiency, fatty acid composition, and nutritional quality indicators of the milk lipid fraction were not influenced by the substitution levels. The diet cost per kg DM decreased due to the peanut meal inclusion as a protein source. The partial or total substitution of soybean meal for peanut meal in the feedlot cows diet reduces the cost of feed, without affecting milk production and total solids yield.
Original languageEnglish
Article number80
Number of pages7
JournalTropical Animal Health and Production
Volume54
Issue number80
DOIs
Publication statusPublished - Feb 2022
Externally publishedYes

Keywords

  • Arachis hypogaea
  • Food cost
  • Protein source

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