Effect of dietary inclusion of black soldier fly larvae (Hermetia illucens) on broiler performance: A meta-analysis

Black Soldier Fly (BSF, Hermetia illucens) is an insect species that potentially can be used as a protein source for broiler nutrition. This study aimed to evaluate different inclusion level of BSF on broiler performance and blood metabolites by integrating various data from related studies using meta-analysis. Total of 12 studies that comprised of 31 data points were integrated in the database. Parameters observed included Live Weight (LW), Average Daily Gain (ADG), Daily Feed Intake (DFI), Feed Conversion Ratio (FCR), blood metabolites, and carcass proportion. The database was statistically analyzed by using mixed model method. Different studies were considered as random effects, and the level of BSF was treated as fixed effects. The model statistics used were the p-values and the Akaike information criterion. The significance of an effect was stated when its p-value was < 0.05. The results revealed that BSF feeding had significant linearly reduction effect on LW, ADG, and FCR of broiler (P < 0.05) and significant linearly increase effect on DFI and carcass proportion. However, BSF did not significantly affect on blood metabolites of broilers. It can be concluded that BSF negatively affect the performance of broiler.

Sustainable feed resources for optimizing broiler performance in tropical countries

Soybean meal and grain corn are feedstuffs that normally used as the main ingredients in poultry feeds as a source of protein and energy in tropical countries. The availability of these feedstuffs for broiler nutrition nowadays is becoming more competitive. Thus, food security, especially in the developing countries, would be susceptible. Currently, efforts are being made to use alternative feedstuffs as a sustainable feed resources to substitute portion of soybean meal and grain corn in poultry diets due to their high price since both of the raw material were imported. In Malaysia, usage of PKC is common in ruminant diets, but limited in the non-ruminant diets especially in poultry diets due to the high fiber content of PKC. Several works have been conducted to increase the nutritional contents of PKC as one of the measures to reduce and/or eliminate the constraints of utilizing PKC in poultry diets. The method used to achieve this target is either through physical, chemical, biological or combination of these treatments. This paper discusses the use of PKC as the sustainable feed resources that can be incorporated in the poultry feeds. Hence, emphasis should be given to improve nutritional values of PKC in order to reduce feeding cost of poultry.

A Research on the Comparative Effect of Active Dry Yeast and Inactivated-Stabilized Probiotic Yeast (Thepax) Added at Different Levels to Diets on Broiler Performance

This experiment was conducted to determine the effect of active yeast (AY) and inactive-stabilized yeast (Thepax) supplementation to the rations in different levels on broiler performance. In the experiment carried out according to the randomized plot design, there were 5 different treatment groups as control group (Group 1), 0.1% Thepax (Group 2), 0.2% Thepax (Group 3), 0.1% AY (Group 4) and 0.2% AY (Group 5). In the experiment, the effects of active and inactive yeasts on body weight gain (BWG), feed consumption, feed conversion rate, carcass weight (CW), carcass yield (CY), abdominal fat amount and mortality were investigated. In the present experiment, the final live weight, the cumulative feed consumption and feed conversion were insignificant. The statistical difference between the groups in the experiment was significant in carcass weight, but insignificant in the amount of abdominal fat and mortality rate. Inactive-stabilized yeast (Thepax 0.1%) was more effective than 0.2% AY on BWG. Only 0.1% Thepax increased the CW besides CY was high in 0.1%, 0.2% Thepax and 0.1% AY groups. It has been observed that active and inactive yeasts are used in broiler chickens without any problem.

Effects of Adding Natural Blends of Kaolin and Spices on Broiler Performance, Meat and Bone Quality

Background: The aim is to compare the effectiveness of 3% of natural preparations mixtures based on kaolin associated with garlic, ginger and/or their mixture on the performance, the cutting yield, carcass and bone qualities of broiler. Methods: 192 one-day-old Cobb 500 chicks were assigned to 04 groups of 48 four-replicate chicks (C: without addition; Kgar: 3% kaolin-garlic; Kgin: 3% kaolin-ginger and Kgg: 3% kaolin-garlic-ginger). Result: Results showed that the mixtures significantly improve body weight and feed efficiency at 42 days, with nonetheless a more marked effect for the Kgar group (BW: +4.5%; FCR: -5.5%). In addition, still in favor of the Kgar group, the same tendency was recorded for the yield of chicken ready-to-cook (+3.2%; P=0.02) accompanied by enhanced breast and thighs yields. In terms of quality, the mixtures significantly impacted the meat conservation criteria by reducing water-holding capacity by almost 50% and less abdominal fat deposition. Finally, although not significant, the indicators of bone quality measured (ash content and seedor index) appear better in chickens receiving mixtures. The results of this study show the interest of adding a mixture of kaolin and condiments in improving broiler performance, meat quality and bone characteristics.

Laser Environmental Enrichment and Spirulina Algae Improve Broiler Growth Performance and Alter Myogenic Gene Expression and pectoralis major Dimensions

Sustainability in poultry production is evident in efforts to reduce inputs and a focus on bird welfare and livability. Dietary protein alternatives to traditional sources such as soybean meal aim to meet or exceed efficiency benchmarks and be cost-effective. Environmental enrichment encouraging activity may reduce the occurrence of the predominant breast muscle myopathy, woody breast (WB); interventions to minimize muscle damage and economic loss have yet to be established. The study objectives were to maintain or improve broiler performance and breast quality through environmental enrichment and partially replacing dietary soybean meal with Spirulina. Twelve hundred Ross 708 broilers were randomly assigned to enrichment (LASER; laser enrichment, or CON; no laser enrichment) and diet (algae; 2.5% Spirulina algae, or control) in a 2 × 2 factorial design for 49 days. The same 70 randomly selected birds were examined for contact dermatitis wk 1–6. Breast width was measured weekly on 200 growing broilers beginning on d22. On d42 and 49 slaughter, WB score was assigned using a tactile 0–3 scale and the right breast filet was weighed (n = 200). RNA isolated from 30 breast muscle samples each at d42 and 49 was analyzed using real-time qPCR. Laser enrichment increased body weight at all timepoints (d49: 0.148 kg, P &lt; 0.001). Feed conversion ratio was improved in LASER-enriched birds by 3 points in the starter period (P = 0.003). Breast width was increased at all timepoints in LASER-enriched birds compared to CON (d49: 0.47 cm, P &lt; 0.001). Algae inclusion increased body weight at d28 (0.059 kg, P = 0.005). At d42, 12% more LASER-enriched WB scores were 0 (normal) compared to CON, and at d49, 15% more enriched scores were 0. At d42, 5% more algae-fed broiler scores were 0 compared to control. LASER-enriched broiler breast tissue showed upregulated expression of myogenin, muscle regulatory factor 4, insulin-like growth factor 1, and myostatin compared to CON (P &lt; 0.01). Both laser enrichment and algae inclusion improved broiler performance without negatively impacting environmental or physiological outcomes. LASER enrichment decreased severity of WB score and positively shifted myogenic gene expression in the breast muscle at slaughter.

Exploring the Functional and Metabolic Effects of Feeding Garra Fish Meal to Broiler Chickens

The present study evaluated the metabolic and functional effects, beyond nutritive value, of feeding garra meal to broiler chickens. Three hundred twenty Sasso-breed day-old chicks were randomly assigned to four dietary treatments with either 0, 10, 20 or 30% garra meal added on top of a formulated starter and grower basal diets. The experiment lasted for 42 days. There was a gradual increase in feed intake and body weight gain with increasing garra meal addition (p < 0.05). Broiler chickens fed 30% garra meal were more efficient in converting feed to body weight and yielded the highest carcass weight (p < 0.05). Crude protein and crude fat digestibility coefficients were higher with the garra meal receiving groups with the highest values (74.8 ± 1.6 and 92.3 ± 0.6) recorded with 20% and 30% garra meal additions, respectively (p < 0.05). The increase in individual and total esterified carnitine concentrations in dried blood spots demonstrated the elevated metabolic rate with increasing garra meal addition (p < 0.05). A better supply of glucogenic substrate to the citric acid cycle was seen with garra meal addition due to the increase of propionylcarnitine to acetylcarnitine ratio (p < 0.05) while no effect was observed on ketogenesis as measured through the 3-hydroxybutyrylcarnitine to acetylcarnitine ratio (p > 0.05). Yet, it likely showed that part of the higher amino acids (Leucine, Methionine and Citrulline) uptake due to garra meal was used as glucogenic substrate (p < 0.05). Histo-morphology showed gradual increases in villus height, crypt depth and their ratio in the proximal parts of the intestine (duodenum and jejunum) with the opposite results observed in the more distal part (ileum) with garra meal addition (p < 0.05). It can be concluded that garra meal strongly improved broiler performance when added to a plant-based diet and only few parameters warranted for caution when using more up to 30% garra meal addition. Beyond growth performance, garra meal generated a shift to a more efficient digestion and nutrient metabolism, and induced changes in edible muscle that may aid in solving shortages in the Ethiopian human diet.

A Mini Review of the Effects of NSP and Exogenous Enzymes in Broiler Diets on Digestibility and Some Intestinal Functions

Summary NSP (non-starch polysaccharides) are a large group of compounds, which vary greatly in their chemical structure and properties. They are linked with the use of some of the alternative proteins or energy feed ingredients in broiler nutrition. Exogenous enzymes which act on NSP are sometimes in broiler production with the purpose of increasing digestibility of nutrients and consequently increasing broiler performance in production. This paper will attempt to review changes occurring in the digestive tract as a result of the use of feed with NSP soluble and insoluble in water, and the effect of NSPase on them, in terms of how an animal organism is burdened or helped to overcome the problems.

Phytogenic Ingredients from Hops and Organic Acids Improve Selected Indices of Welfare, Health Status Markers, and Bacteria Composition in the Caeca of Broiler Chickens

The objective of this study was to determine the influence of phytogenic product-supplemented, organic acid-supplemented, and prebiotic-supplemented diets on the production results, antioxidative status, and selected welfare indices in broiler chickens. A total of 1155 one-day old male Ross 308 broilers were randomly assigned to one of three treatment groups: Group C, no additives; Group A, supplemented with phytogenic supplement (50% hop); and Group P, supplemented with 65% organic acids and their salts, and 30% prebiotic complex. Health condition and production results were monitored during the entire experiment. After 42 days, 10 birds from each dietary treatment group were selected for blood sampling and slaughter analysis. The results obtained revealed that over the whole feeding period, none of the investigated additives significantly affected broiler performance indices. However, feeding the birds treatment-A increased the relative abundance of Bifidobacterium in caecal digesta compared to the other treatments, whereas feeding treatment-P increased the relative abundance of Lactobacillus compared to the control treatment. Overall, treatment-A was more effective at increasing relative abundance of Clostridia in birds at 42 days of age than treatment-P. Finally, there were no changes in blood levels of antioxidant indices or liver function indicators.

The Effect of Feeding Acidifier and Probiotics with Different Levels in The Diet Growth on Broiler Performance

This research which aims to determine the effect of probiotic and Acidifier supplementations in the fermentation diet on growth of broiler has done in Takengon, Central Aceh District from August until October 2020. This research used 160 chicks strain Cobb 89 produced by PT. Charoen Pokphand. This study used a complete randomized design consisting of 4 treatments and 4 replications. The treatment of probiotic and Acidifier supplementations were: 0% (A), 0.1% (B), 0.2%(C), 0.3%(D). Parameters observed were achievement of final weight, weight gain, feed consumption, feed conversion, and feed efficiency. Data was analyzed by analysis of variance (ANOVA) and continued by Duncan Multiple Range Test if significant effect was detected. The result showed that the differences in supplementation of probiotic and Acidifiers effected significantly (P <0.05) on the final weight, weight gain, feed conversion and feed efficiency. However, there was no significant effect on rate of consumption. The result of present study showed that the combination of probiotic and Acidifier had a best impact on broiler growth and it was also decreased mortality of chicken.