Diet energy levels and temperature affect the size of the fat milk globule in dairy goats

Roberto Germano Costa,Mina Martini,Mikael Leal Cabral Menezes De Amorim,Ricardo Romão Guerra,David Kleberson Rodrigues De Azevedo,Amanda Marília Da Silva Sant’Ana,Iolanda Altomonte,Neila Lidiany Ribeiro

doi:10.37496/rbz5020200145

Abstract

The study aimed to verify the effect of diet and environmental temperature on traits of milk fat globules (MFG) of goats. The experiment was conducted in climatic chambers, where we housed 12 Alpine goats with a mean age of 4.02±1.78 years, live weight of 41.8±4.59 kg, and average milk production of 2.16±0.59 kg. The animals were subjected to two different controlled temperatures, T1 = 26 ℃ (thermoneutral) and T2 = 34 ℃ (stress), and diets with different energy levels [...]

Highlights

Goat production is a vital livestock activity for most developing countries, concentrating in tropical and semiarid regions
The dairy goat activity has grown in these regions due to the species’ adaptability to environmental changes and can provide an improvement in the nutritional level in the diet of low-income families and the general population (Ribeiro and Ribeiro, 2001)
Milk fat globules (MFG) have diameters ranging from 1 to 10 μm and are surrounded by a biological membrane (MFGM) (Jiménez-Flores and Brisson, 2008) that has many active compounds, such as proteins, fatty acids, peptides, and other components, which contribute to human health (Bauman et al, 2006)

Summary

Introduction

Goat production is a vital livestock activity for most developing countries, concentrating in tropical and semiarid regions. The dairy goat activity has grown in these regions due to the species’ adaptability to environmental changes and can provide an improvement in the nutritional level in the diet of low-income families and the general population (Ribeiro and Ribeiro, 2001). According to Amigo and Fontecha (2011), there has been a growing interest in goat milk and goat dairy products worldwide because of its high nutritional content and health benefits. Diet energy levels and temperature affect the size of the fat milk globule in dairy goats 2. Milk fat globules (MFG) have diameters ranging from 1 to 10 μm and are surrounded by a biological membrane (MFGM) (Jiménez-Flores and Brisson, 2008) that has many active compounds, such as proteins, fatty acids, peptides, and other components, which contribute to human health (Bauman et al, 2006)

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