Glycerin diet affects the size of the fat globule and the fatty acid profile of goat's milk

FREIRE, Luís Flávio da Silva; Cruz, George Rodrigo Beltrão da; Costa, Roberto Germano; Ribeiro, Neila Lidiany; Guerra, Ricardo Romão; Sousa, Solange de; Lima, Aécio Melo de; SILVA, Gislaine Ferreira; Sant’Ana, Amanda Marília da Silva; Nascimento, George Vieira do

doi:10.1590/fst.85821

Cited by 3 publications

(2 citation statements)

References 21 publications

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“…The softness attribute showed a difference, which may be associated with milk fat content, which was influenced by dietary glycerin levels. Goat cheese is softer than beef cheese, resulting from the higher proportion of smaller fat globules in goat milk (Freire et al, 2022b).…”

Section: Discussionmentioning

confidence: 99%

Sensory analysis of goat cheese feed with sorghum silage levels in forage cactus based diets

et al. 2023

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The objective of this study was to evaluate the quality of milk and cheese and sensory analysis of cheese from goats that received a diet with different levels of sorghum silage in the diet. Twenty Anglonubian dairy goats were used, with an average age of 2 years, average live weight of 43.7 kg, distributed in a completely randomized design, with five replications. Moisture (P=0.001), total solids (P=0.001), fat (p=0.001), TDE (P=0.006) and protein (P=0.003) of goat cheese showed a significant difference due to the inclusion of silage from goat cheese. sorghum in the diet. The sensory attributes soft appearance (P<.0001), look (P<.0001), salty taste (P<.0001) and smooth texture (P=0.0430) showed a significant difference depending on the level of sorghum silage added to the diet. of goats. In the PC analysis, it is observed that three main components were needed to represent the variation of 64.84% of the data. PC 1 determined 29% of the data variation and was represented by the attributes with the highest averages: attractive aroma (5.87) and global acceptability (7.74). The inclusion of up to 45% of sorghum silage in the diet of goats increased milk and cheese fat, which favored high scores for the attributes of softness and global acceptance.

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Section: Discussionmentioning

confidence: 99%

Sensory analysis of goat cheese feed with sorghum silage levels in forage cactus based diets

et al. 2023

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“…Lima et al (2021) replaced corn with double-distilled glycerin in the diet of dairy goats in proportions of 0, 6, 12 and 18% and observed that when inserted in the diet of dairy goats at increasing levels, it does not change milk production, protein and the lactose. Freire et al (2022) replaced corn with doubledistilled glycerin in the proportions of 0 and 15% in the feeding of dairy goats and observed that there was an increase in milk production, the amount of fat in milk and the size of milk fat globules also increased and saturated and polyunsaturated fatty acids did not change. In this way, glycerin appears as an option in the formulation of diets, which can replace corn (Lage et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Production and economic analysis of milk from goats fed with double-distilled glycerin

et al. 2022

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The objective of this research was to evaluate the production, milk quality, consumption and financial analysis of milk from goats consuming diets with different levels of double-distilled glycerin. Twelve multiparous Saanen goats, weighing 40 ± 6 kg and 30 ± 5 days of lactation, kept in a confinement system for 60 days were used. The goats were randomly distributed in a Latin square (4 x 4), according to the levels of double-distilled glycerin. The ingredients used were tifton hay, ground corn grain, soybean meal, vitamin/mineral supplement, urea, and double-distilled glycerin levels (0, 6, 12 and 18%) to replace corn in the diets. The milk fat of goats fed with double-distilled glycerin in the diet showed a decreasing linear regressive effect (P = 0.001). Dry matter intake showed a quadratic regressive effect (P = 0.033). Evaluating the total cost of each diet, it was observed that the level containing 0% glycerin was the diet with the lowest cost per kilogram. The use of double-distilled glycerin in the feeding of dairy goats can be recommended up to the level of 18% of corn replacement without harming milk production, however, it is necessary to verify the economic viability, considering that there will be losses in the quality of the milk produced.

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Effect of Short-Term Glycerin Supplementation on Follicle Dynamics and Pregnancy Rate in Goats

da Silva,

Fernandes,

Alves

et al. 2023

Ruminants

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We investigated the effects of short-term glycerin supplementation on follicular dynamics and pregnancy rates. Twenty-five goats with synchronized estrus and follicular waves with three injections of a prostaglandin analog every 7 days were used. Two days after the second injection, 13 goats were randomly chosen to receive an oral drench of 200 mL of glycerin (glycerin group [GG], n = 13) for 6 days, whereas the remaining 12 animals received an oral drench of saline (control group [CG], n = 12). At 24 and 48 h after the third injection, the goats mated. The animals were kept in a collective stall and received the same diet. The GG had higher blood glucose levels during the supplementation period than the CG (76.4 ± 1.9 vs. 50.3 ± 0.7 mg/dL; p < 0.01). The glycemic peak was recorded 4 h after the glycerin administration (102.3 ± 5.1 mg/dL) and remained higher than that in the CG 8 and 12 h later. The GG goats had a higher rectal temperature, heart rate, and respiratory rate than the CG goats and showed an increase in these parameters 4, 8, and 12 h after glycerin drenching. The GG animals also exhibited increased stress, urination, and drinking behaviors and reduced rumination. The ultrasonographic analysis showed a higher number of follicles with a diameter >4 mm (p < 0.05) and a greater follicular diameter (p < 0.01) in the waves before and after ovulation induction. The pregnancy and twinning rates and litter size at parturition were not different between the groups. Short-term supplementation with glycerin positively affects ovarian stimulation but has no effect on the reproductive response after mating.

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Glycerin diet affects the size of the fat globule and the fatty acid profile of goat's milk

Cited by 3 publications

References 21 publications

Sensory analysis of goat cheese feed with sorghum silage levels in forage cactus based diets

Sensory analysis of goat cheese feed with sorghum silage levels in forage cactus based diets

Production and economic analysis of milk from goats fed with double-distilled glycerin

Effect of Short-Term Glycerin Supplementation on Follicle Dynamics and Pregnancy Rate in Goats

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