The microencapsulated mixture of organic acids and pure botanicals (OA/PB) has never been evaluated in goats. The aim of this study was to extend the analysis to mid–late lactating dairy goats, evaluating the effects of OA/PB supplementation on the metabolic status, milk bacteriological and composition characteristics, and milk yield. Eighty mid–late lactating Saanen goats were randomly assigned to two groups: one group was fed the basal total balanced ration (TMR) (CRT; n = 40) and the other was fed a diet that was TMR supplemented with 10 g/head of OA/PB (TRT; n = 40) for 54 days during the summer period. The temperature–humidity index (THI) was recorded hourly. On days T0, T27, and T54, the milk yield was recorded, and blood and milk samples were collected during the morning milking. A linear mixed model was used, considering the fixed effects: diet, time, and their interaction. The THI data (mean ± SD: 73.5 ± 3.83) show that the goats did not endure heat stress. The blood parameters fell within the normal range, confirming that their metabolic status was not negatively influenced by OA/PB supplementation. OA/PB increased the milk fat content (p = 0.04) and milk coagulation index (p = 0.03), which are effects that are looked on as favorable by the dairy industry in relation to cheese production.

The slaughter performance and meat quality of two native Italian chicken breeds, Bionda Piemontese (BP, n = 64) and Bianca di Saluzzo (BS, n = 64), were investigated. Two-way ANOVA, considering breed, sex, and their interaction, was used to compare the properties of birds slaughtered at 5, 6, 7, and 8 months of age. Subsequently, data were analyzed using one-way ANOVA and the Duncan test to evaluate the differences between slaughter ages. The BP breed produced a better carcass yield than BS at 5, 7, and 8 months of age (p < 0.05). Breast moisture and crude protein contents were influenced by gender, and were higher in males than in females (p < 0.05). By contrast, the crude fat content was higher in females than in males (p < 0.05). The saturated fatty acid content of breast meat increased as the birds aged in both breeds (p < 0.05). The polyunsaturated fatty acid content of both breast and thigh meat was higher in males than in females (p < 0.001 and p < 0.05, respectively). In general, slaughtering at 7 months was associated with the best slaughter and meat quality characteristics in both breeds. Moreover, from a nutritional point of view, the characteristics of the meat from male birds were preferable to those of meat from females.

Hermetia illucens (HI) and Tenebrio molitor (TM) meals have widely been used in broiler chickens, but their mixture has never been tested. This study investigated the effects of HI and TM meals - alone and as a mixture (MIX, 1:1) - on productive performance, nutrient digestibility, carcass traits, and meat quality of broiler chickens. After assessing the nutrient digestibility of the insect meals (72 26-day-old male broilers, 4 treatments, 9 cages/treatment, 2 birds/cage), a total of 420 1-day-old male broiler chicks were allotted to 7 diets for 37 days (6 pens/diet, 10 birds/pen): C (control), HI5 (5 % HI), HI10 (10 % HI), TM5 (5 % TM), TM10 (10 % TM), MIX5 (5 % MIX), and MIX10 (10 % MIX). In the whole experimental period, better feed efficiency was observed in TM5, TM10 and MIX5 than C, HI10 and MIX10 birds (P < 0.001). Overall, TM5 and MIX5 groups showed the highest slaughtering, ready-to-cook carcass, and chilled carcass weights, while the lowest values were observed in HI10 and MIX10 (P < 0.001). Meat pH and color were limitedly influenced by dietary insect meal inclusion, while higher breast cooking losses were observed in HI10 birds than C, HI5 and MIX5 (P < 0.001). Higher breast dry matter was observed in HI5 birds than TM5 and HI10 (P < 0.001), with the same broilers displaying greater breast crude protein than TM5 (P < 0.001). The highest and lowest percentage of monounsaturated and polyunsaturated fatty acids, respectively, were observed in TM10 birds, along with the lowest polyunsaturated:saturated fatty acids ratio (P < 0.001). The TM5, HI5 and HI10 meat displayed lower tenderness than C meat (P = 0.001), with lower juiciness and overall liking being also overall identified for TM5 (P < 0.05). In conclusion, including 5 % of TM and MIX meals in diets for broiler chickens improved growth performance and carcass traits, while the 10 % inclusion level of HI and MIX meals was associated with the worst outcomes. Including 10 % of HI meal or using TM meal (mainly 5 %) also worsened meat quality and consumer perception.

This study investigated the effects of supplementing the diet of a slow-growing autochthonous chicken breed with dehydrated or live Black Soldier Fly Larvae (BSFL) on meat quality and sensory attributes. The research, conducted at the University of Turin, Italy, involved 144 male birds distributed in three experimental groups. The control group (C) was fed a basal diet in which soybean meal was completely substituted with alternative ingredients. The 2 experimental groups were administered a diet identical to the control group but supplemented with either whole dehydrated black soldier fly larvae (DL) or whole live black soldier fly larvae (LL) at a level equal to 5% expected daily feed intake of dry matter. We evaluated the following parameters: nutrient intake, slaughtering performance, physical and nutritional meat quality, fatty acid composition, proteomics, and sensory characteristics. The results demonstrated BSFL supplementation to have no detrimental effects on overall meat quality or sensory attributes. Specifically, there were no significant differences in physical meat quality parameters, nutritional composition, lipid oxidation, or protein digestibility between control and BSFL-fed groups. Fatty acid analysis revealed higher concentrations of lauric and myristic acids in BSFL-fed chicken breast (p < 0.005), suggesting potential nutritional benefits from the supplement. The proteomic analysis also showed no significant differences in the expression of abundant proteins in the breast meat between groups, indicating minimal physiological impact of BSFL supplementation. Overall, this study provides reassurance to consumers and industries about the suitability of BSFL as a sustainable feed supplement for poultry that also offers potential benefits in terms of optimizing the fatty acid profile of chicken meat.