ORCID Profile
0000-0002-7045-2075
Current Organisation
Universidade de Trás-os-Montes e Alto Douro
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Publisher: Wiley
Date: 2006
DOI: 10.1002/JSFA.2444
Publisher: MDPI AG
Date: 26-03-2021
DOI: 10.3390/ANI11040942
Abstract: Lupins are suitable candidates to replace soybean meal in livestock feeding in the Mediterranean area, presenting a solution for the European Union’s dependence on soybean importations. This study aimed to assess the effect of incorporating Lupinus albus and Lupinus luteus into Churra da Terra Quente lambs’ diets on growth performance and digestibility. Two trials were conducted over two years. In trial 1, two experimental diets containing 50 g/kg Lupinus albus and 50 g/kg Lupinus luteus were tested. In trial 2, lambs were fed with diets containing higher incorporations of Lupinus luteus (100, 150, and 200 g/kg: LL10, LL15, and LL20, respectively). Total dry matter, hay dry matter, and crude protein intake were calculated, as well as average daily gains. At the end of the growth trials, dry matter, organic matter, and NDF digestibility was determined. Incorporating 50 g/kg of lupins did not affect (p 0.05) the performance. Lambs fed on LL20 diets presented the lowest HDMI and CPI values (p 0.05). The highest intakes (p 0.05) were observed from LL15 lambs. No differences were found in apparent digestibility coefficients between diets (p 0.05), except for NDF digestibility which was highest (p 0.05) for LL20. The optimum level of lupin inclusion in lambs’ diets seems to be 150 g/kg.
Publisher: MDPI AG
Date: 20-09-2022
DOI: 10.3390/ANI12192501
Abstract: Arouquesa is an autochthonous bovine breed known for its Arouquesa PDO beef labeling. There are several production systems under the definition of PDO labeling. This study aimed to compare the effect of different production systems on carcass and meat traits for the Arouquesa breed. Two trials differing in diet and weaning age were conducted. The first trial included a TF group fed the traditional way and weaned at 9 months a TF + S1 group, equal to TF, but with a starter supplement and finally, a S1 + S2 group that was fed with a starter and a growth supplement and weaned at 5 months. The second trial was composed of a TF + S3 group fed like the TF + S1 group but reared until 12 months with a finishing supplement, and finally, the S3 group fed like the S1 + S2 group but reared until 12 months. In the first trial, the TF + S1 and S1 + S2 groups showed higher final live weight and average daily gain. In the second trial, we observed differences in the subcutaneous fat that was higher in the S3 group. Regarding meat traits, we observed differences in exudative and cooking losses in the first trial. In general, supplementation improved meat production without affecting meat quality parameters.
Publisher: Canadian Science Publishing
Date: 11-2018
Abstract: Understanding herbivore foraging behaviour is crucial for adequate wildlife management decisions. This study assessed the diet composition of free-ranging addax antelope (Addax nasomaculatus (de Blainville, 1816)). S les collected during the spring season were analyzed using microhistological procedures along with n-alkanes and long-chain alcohols as fecal markers. Twelve animals were monitored and fresh fecal s les were collected daily during a 7-day period. Diet composition estimates obtained by both methods were similar and indicate that Stipagrostis pungens (Desf.) De Winter was the main diet component followed by Fagonia glutinosa Delile, Helianthemum kahiricum Delile, and Hammada schmittiana (Pomel.) Botsch. Data showed that addax have mixed diets composed of perennial woody and herbaceous plant species depending on their availability. The four species most selected by the animals were also the most abundant species in terms of plant cover. In contrast, species that accounted for less than 5% of the plant cover were not present in the fecal s les. Results of this study represent a single grazing season, and for that reason, further studies are required to fully understand how the grazing behaviour of addax varies with seasonal changes in vegetation cover.
Publisher: MDPI AG
Date: 08-07-2022
DOI: 10.3390/ANI12141758
Abstract: The objective of this preliminary study was to evaluate the effects of partial replacement of soybean meal by lupins on lambs’ diets, on the carcass traits, meat characteristics, and meat fatty acid profile. Two trials were conducted: In trial 1, the soybean meal (control C) was partially replaced by Lupinus albus or Lupinus luteus (50 g/kg LA5 and LL5, respectively) in trial 2, lambs were fed four diets with graded levels of Lupinus luteus (0, 100, 150 and 200 g/kg C, LL10, LL15, LL20, respectively). At the end of the feeding trials, animals were slaughtered to evaluate carcass characteristics and meat composition, including fatty acids. Carcass composition in tissues was not affected (p 0.05) by diet in both trials. Additionally, no significant (p 0.05) differences were observed in meat quality attributes between diets in trials 1 and 2. Overall, the Longissimus muscle’s fatty acid content was not affected by diet (p 0.05) in both trials. Carcass and meat quality was overall comparable between lambs fed with soybean meal and lupins, indicating the latter as a potential alternative protein source. However, the lack of significant differences could also be attributed to the small s le size.
Publisher: MDPI AG
Date: 11-08-2022
Abstract: In Europe, the most appropriate strategy to replace soybean meal (SBM) in animal feed has been the development of diets containing locally produced protein sources. One of these sources is lupine (Lupinus spp.). The effect of the total substitution of SBM by white lupine (WL) and yellow lupine (YL) seeds in the diets of growing rabbits and of gender on meat quality and the fatty acids (FA) profile were evaluated. Sixty hybrid weaned rabbits (New Zealand × Californian) (20 rabbits per diet), were fed diets that contained 150 g/kg of SBM (SBMD) and WL (WLD) or YL (YLD) for 35 to 69 days. At the end of this period, 30 rabbits (10 rabbits per diet) were slaughtered to evaluate the carcass and meat characteristics and the FA profile of the longissimus dorsi (LD) muscle. In general, the carcass and meat characteristics (pH and colour) were not affected (p 0.05) by diet or gender. Further, there was no observed effect (p 0.05) of gender on meat FA and on the calculated indexes related to human health. However, diet had an effect (p 0.05) on the FA profile, FA categories, and calculated indexes related to human health. The meat from rabbits fed SBMD presented higher (p 0.05) saturated FA (SFA 44 vs. 39 g/100 g average on lupine diets) and lower (p 0.05) polyunsaturated FA (PUFA 24 vs. 28 g/100 g average on lupine diets). Our results showed that SBM may be completely replaced by WL or YL, improving the quality of LD muscle FA in terms of nutritional quality for humans.
Publisher: National Inquiry Services Center (NISC)
Date: 29-06-2018
No related grants have been discovered for Severiano Silva.