Обменна енергия в сушени плодове от облепиха (Hippophaes rhamnoides) за пилета бройлери

The aim of the experiment was to assess the content of N-corrected apparent metabolisable energy (AMEn) in dried Sea buckthorn berries (SB) when fed to Ross 308 broiler chickens. Two experimental diets (basal and basal + 12 g/kg dried and milled SB berries) were fed to an equal number of replicated pens (n=8; two birds in each) from 7 to 21d age, following randomisation. The basal diet was formulated to meet breeder’s recommendations. The inclusion of dried SB berries at 12 g/kg diet, did not significantly (P>0.05) affect broiler chicken growth performance, dietary nutrient availability or AMEn. Using the substitution method, it was found that the AMEn of the dried SB berries was 14.29 MJ/ kg DM. Although relatively high in AMEn, the absence of starch in SB berries, suggests SB berries are not a suitable substitute for cereals in poultry diets, but further research on their health benefits as a minor supplement for poultry diets is warranted.Целта на експеримента е да се оцени съдържанието на N-коригирана видима обменна енергия (AMEn) в сушени плодове от облепиха (SB), при хранене на пилета бройлери Ross 308. Две експериментални диети (базална и базална + 12 g/kg сушени и смлени SB плодове) бяха приложени с равен брой повторения (n=8; по две птици във всяка клетка) от 7 до 21-годишна възраст, след рандомизиране. Основната диета е формулирана следвайки стандартните изисквания. Включването на сушени плодове SB при 12 g/kg диета не повлия значително (P>0,05) върху ефективността на растежа на бройлерите, смилаемостта на хранителни вещества и AMEn. Използвайки метода на заместване, беше установено, че AMEn на изсушените SB плодове е 14,29 MJ/kg DM. Макар и относително високо съдържание на AMEn, отсъствието на скорбяла в плодовете на SB, предполага, че плодовете на SB не са подходящ заместител на зърнените храни в диетите за домашни птици, но са оправдани по-нататъшни изследвания за техните ползи за здравето като незначителна добавка за диети за домашни птици

Gender essentialism and occupational segregation in insolvency practice

Advances towards egalitarianism in professional recruitment may be offset by processes of occupational re-segregation. Drawing on gender theory this paper investigates horizontal segregation in the UK insolvency profession, as revealed through the lived experiences of female and male practitioners. It is shown that horizontal segregation pervades at different levels of practice and is undergirded by various elements of gender essentialism. Physical essentialism explains why insolvency practice has been traditionally gendered male. Interactional essentialism combines with the management of work-life balance to define the subfields of corporate and personal insolvency as masculine and feminine respectively. Gender essentialist assumptions also pervade the distribution of roles and the allocation of work tasks. Networks are identified as arenas for the reproduction and perpetuation of occupational segregation. The findings indicate the continuing potency of gender in everyday professional life, the limitations of diversity-orientated policies and the complexities of formulating transformative agendas

Rapeseed meal processing and dietary enzymes modulate excreta inositol phosphate profile, nutrient availability and production performance of broiler chickens

This study aimed to assess the effect of rapeseed meal (RSM) processing method, where solvent extraction occurred under standard industry conditions (ST) or cold-pressed hexane extraction was employed (MT), and exogenous enzyme supplementation (phytase [PHY] and xylanase [XYL]) alone or in combination on key nutritional factors of broiler chickens. A randomized control experiment was performed using 144 male Ross 308 broilers in a 2 × 2 × 3 factorial arrangement. Three diets including a nutritionally complete wheat-based basal diet (BD), a diet containing 200 g/kg of RSM extracted under ST and another diet containing 200 g/kg of RSM extracted under MT were produced. Each diet was then split into 4 parts and was fed as is, or supplemented with PHY at 1,500 FTU/kg or XYL at 16,000 BXU/kg, alone or in combination, resulting in 12 diets in total. Response criteria: feed intake (FI), weight gain (WG), and feed conversion ratio (FCR), from 7 to 21 d age, AMEn, retention coefficients for dry matter (DMR), nitrogen (NR), fat (FR), and the profile of inositol phosphate esters (IP2-6) and myo-inositol (MI) in excreta. Diets containing MT had higher AMEn compared to ST diets (P < 0.05). There was RSM by PHY interaction for FI, as only birds fed MT diet responded to PHY supplementation with reduced FI and FCR (P < 0.001). Feeding XYL reduced overall FI and FCR (P < 0.05). Feeding PHY reduced IP6 and increased MI in excreta (P < 0.001). Feeding XYL and PHY in combination reduced MI in excreta compared to PHY only (P = 0.05). Compared to BD, birds fed RSM diets had an increased IP6 (P < 0.05) and MI concentration in excreta (P < 0.01). This may be due to IP ester differences in RSM and BD

Efficiency of Utilization of Metabolizable Energy for Carcass Energy Retention in Broiler Chickens Fed Maize, Wheat or a Mixture

The study aimed to quantify carcass fat and protein retention, and the efficiency of carcass energy utilization (Kre) resulting from feeding broiler chickens diets containing wheat, maize or mixtures of both as the major cereal ingredient. The apparent metabolizable energy (AME) of the four cereal samples was determined in adult cockerels. There was a linear (p p p = 0.121), but rather decreased numerically (L = 0.032). The Kre tended (p = 0.060) to increase with greater proportion of maize in a linear fashion (L = 0.009). Although AME values of cereals were confirmed to be additive, this could not be confirmed for Kre. This data can be used for optimizing energy utilization models for growing broilers

Defatted Black Soldier Fly Larvae Meal as an Alternative to Soybean Meal for Broiler Chickens

The production of soybean meal (SBM) has a substantial impact on the environment and reducing its inclusion in poultry diets by using alternative protein sources, such as insect meal, is an important challenge for nutritionists. This study aimed to compare the productive performance of broiler chickens fed one of two isonitrogenic (195 g/kg CP) and isocaloric (12.91 MJ/kg) diets. The first diet contained SBM as the main protein source, whereas SBM was completely replaced by defatted meal from Black Soldier Fly larvae (Hermetia illucens L.; BSFL) in the second diet. Compared to the BSFL diet, the final body weight (BW) and weight gain (WG) of birds fed the SBM diet was ~17% greater and feed was utilised 19% more efficiently (p p < 0.05). The present study shows that a complete replacement of dietary SBM with BSFL meal must be achieved with care, ensuring that all other factors (e.g., insect processing technology, feed additive supplementation, non-protein nitrogen accounting, mineral balance, fatty acid profile, amino acid supplementation) have been considered

Feeding Black Pepper (<i>Piper nigrum</i>) or Exogenous Xylanase Improves the Blood Lipid Profile of Broiler Chickens Fed Wheat-Based Diets

This study aimed to determine the impact of dietary black peppercorn (BP) and xylanase (XYL) alone or in combination on growth performance, dietary energy, nutrient digestibility and blood lipid profile when fed to male Ross 308 broiler chickens from the ages of 7 to 21 d. A wheat-soy-based basal feed that was formulated to be 0.42 MJ lower in metabolizable energy (ME) was mixed. The basal feed was then split into four batches, with the first batch set aside as the basal control; the second batch was supplemented with freshly milled BP; the third batch was supplemented with XYL; the fourth batch was supplemented with both BP and XYL, as in the previous two batches. Each diet was fed to eight pens, with two birds in a pen, following randomization. Feeding BP reduced bird growth and most of the digestibility coefficients but increased blood high-density lipoprotein (p p 10, but reduced blood low-density lipoprotein (p p > 0.05) observed. Further research is needed to identify the optimum level of BP in broiler diets

The Benefits of Exogenous Xylanase in Wheat–Soy Based Broiler Chicken Diets, Consisting of Different Soluble Non-Starch Polysaccharides Content

Four wheat-based diets with either a low soluble content of non-starch polysaccharides (NSPs, 13 g/kg); low viscosity, LV) or a high content of NSPs (33.5 g/kg; high viscosity, HV), with and without exogenous xylanase (XYL), were fed to male Ross 308 broiler chickens from 7 to 21 days age. The enzyme was supplemented at 100 FXU/kg diet, and its preparation was based on endo-1,4-beta-xylanase produced by Aspergillus oryzae. Each diet was fed to eight pens, with five birds in each pen, following randomisation. Chicks fed XYL had an improved feed efficiency, hepatic coenzyme Q10, caecal butyric acid concentration, nitrogen digestibility (p p p < 0.05), but no differences were observed on nutrient digestibility and growth performance variables. This also suggests that birds may tolerate a greater dietary NSPs content; thus, further benefits may be obtained by the application of XYL in low energy wheat-based diets

The Benefits of Exogenous Xylanase in Wheat–Soy Based Broiler Chicken Diets, Consisting of Different Soluble Non-Starch Polysaccharides Content

Four wheat-based diets with either a low soluble content of non-starch polysaccharides (NSPs, 13 g/kg); low viscosity, LV) or a high content of NSPs (33.5 g/kg; high viscosity, HV), with and without exogenous xylanase (XYL), were fed to male Ross 308 broiler chickens from 7 to 21 days age. The enzyme was supplemented at 100 FXU/kg diet, and its preparation was based on endo-1,4-beta-xylanase produced by Aspergillus oryzae. Each diet was fed to eight pens, with five birds in each pen, following randomisation. Chicks fed XYL had an improved feed efficiency, hepatic coenzyme Q10, caecal butyric acid concentration, nitrogen digestibility (p &lt; 0.05) and increased dietary ME (p &lt; 0.001). Compared to HV, birds fed LV diets had reduced weight of proventriculus, gizzard and the pancreas and higher blood glutathione peroxidase and dietary ME (p &lt; 0.05), but no differences were observed on nutrient digestibility and growth performance variables. This also suggests that birds may tolerate a greater dietary NSPs content; thus, further benefits may be obtained by the application of XYL in low energy wheat-based diets