scholarly journals A study of the effect of homoeopathic treatment on the food conversion, mortality rates and incidence of infectious coryza and related respiratory syndromes in broiler chickens

1998 ◽  
Author(s):  
◽  
Jacqueline Pollock
Keyword(s):  
Life Span ◽  
Conversion Efficiency ◽  
Broiler Chickens ◽  
Mortality Rates ◽  
Food Conversion ◽  
Feed Conversion ◽  
Feed Conversion Efficiency ◽  
Infectious Coryza

During the six-week life span of broiler chickens, stress, vaccination reactions and disease may lead to poor feed conversion efficiency and increased mortality rates. The purpose of this study was to determine whether homoeopathic medicines would influence the feed conversion efficiency, mortality rates and incidence of infectious coryza and related respiratory syndromes in broiler chickens.

scholarly journals Dietary Green Seaweed Compromises Overall Feed Conversion Efficiency but not Blood Parameters and Meat Quality and Stability in Broiler Chickens

Agriculture ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 547
Author(s):  
Tumisang Ben Matshogo ◽  
Caven Mguvane Mnisi ◽  
Victor Mlambo
Keyword(s):  
Growth Performance ◽  
Meat Quality ◽  
Conversion Efficiency ◽  
Broiler Chickens ◽  
Live Weight ◽  
Blood Parameters ◽  
Feed Conversion ◽  
Feed Conversion Efficiency ◽  
Performance Improvements ◽  
Green Seaweed

Using seaweeds as sources of nutrients and beneficial bioactive compounds can promote sustainable production of functional poultry products. This study investigated the physiological and meat quality responses of Cobb 500 broiler chickens to graded levels of green seaweed (Ulva sp.) meal (SWM). Three hundred, two-week-old male chicks (159.3 ± 11.76 g live-weight) were randomly assigned to five diets formulated by diluting a standard broiler diet with SWM at 0 (SW0), 20 (SW20), 25 (SW25), 30 (SW30) and 35 g/kg (SW35). There were neither linear nor quadratic trends (p > 0.05) for overall feed intake, overall growth performance and carcass and meat quality traits. Overall feed conversion efficiency (R2 = 0.192, p = 0.018) and spleen weights (R2 = 0.182; p = 0.020) linearly declined as SWM levels increased. Linear and quadratic responses (p > 0.05) were observed for lymphocytes. There were linear effects for meat pH except on day 7 of storage. Meat lightness (L*) linearly increased whereas meat redness (a*) quadratically responded to SWM levels (day 3 of storage). While an optimum inclusion level could not be established for seaweed based on growth performance, improvements in some meat shelf life indicators were observed in the broilers reared on seaweed-containing diets.

Effects of dietary inclusion of lysolecithin from rice bran oil on performance, serum biochemical profile, organ weights, immune response and nutrient digestibility in broiler chicken

2017 ◽  
Author(s):  
M.V. L.N. Raju ◽  
P. P. Chakrabarti ◽  
S. V. Rama Rao ◽  
B.V. S.K. Rao ◽  
A. K. Panda ◽  
...  
Keyword(s):  
Body Weight ◽  
Conversion Efficiency ◽  
Rice Bran ◽  
Broiler Chickens ◽  
Broiler Chicken ◽  
Rice Bran Oil ◽  
Feed Conversion ◽  
Organ Weights ◽  
Feed Conversion Efficiency ◽  
Fat Digestibility

The possibility of using lysolecithin from rice bran oil (LL) in the diet of broiler chickens was explored. Lysolecithin was included in diet at graded levels (0, 0.05, 0.1, 0.2, 0.4, 0.8, 1.6 and 3.2 % in diet) and fed to a total of 640 broiler chickens from 0 to 35 d of age. The diets were isonitrogenous and isocaloric. Body weight was higher in the group fed the highest level (3.2 %) of LL. Feed intake was significantly (p less than 0.01) lower in the groups fed 1.6 and 3.2 % LL in comparison to control, whereas feed conversion efficiency was significantly (p less than 0.01) improved at the highest level of LL (3.2 %). Serum concentration of protein, total cholesterol and triglycerides as well as slaughter parameters, organ weights, fat deposition in liver and muscle, and SRBC response were not affected. The fat digestibility was significantly (p less than 0.05) improved at the higher levels (1.6 and 3.2 %) of LL in diet. It is concluded that rice bran oil LL could be safely used in broiler chicken diet and at dietary levels of > 1.6 % the LL improved the body weight, feed conversion efficiency and fat digestibility in broiler chickens.

Whole-grain feeding for chicken-meat production: possible mechanisms driving enhanced energy utilisation and feed conversion

2015 ◽  
Vol 55 (5) ◽  
pp. 559 ◽  
Author(s):  
Sonia Yun Liu ◽  
Ha H. Truong ◽  
Peter H. Selle
Keyword(s):  
Conversion Efficiency ◽  
Feed Efficiency ◽  
Broiler Chickens ◽  
Chicken Meat ◽  
Meat Production ◽  
Whole Grain ◽  
Feed Conversion ◽  
Feed Conversion Efficiency ◽  
Causative Factors ◽  
Feed Costs

The practice of offering some whole grain to broiler chickens alongside a balancing concentrate is meeting increasing acceptance in certain regions, including Europe, Canada and Australia. Whole-grain feeding (WGF) regimes provide economic advantages by effectively reducing feed costs but, to varying extents, WGF regimes also generate improvements in energy utilisation and feed conversion efficiency. However, the context in which these improvements are best realised has yet to be defined adequately. The outstanding response to WGF is the development of heavier relative gizzard weights; however, the causative factors and biophysical and biochemical consequences of heavier, and presumably more functional, gizzards have not been properly investigated. It follows that heavier gizzards would enhance the initiation of protein digestion by pepsin and hydrochloric acid and facilitate amylase-induced starch digestion in the small intestine by the prior physical disruption of starch granules. However, it appears that improvements realised by WGF in energy utilisation and feed efficiency cannot be attributed entirely to heavier gizzards. One alternative or additional possibility is that WGF may influence starch digestive dynamics and provide more gradually or slowly digestible starch, which would benefit energy utilisation and feed efficiency. However, if this is the case, the genesis of this provision is not clear, although it may be associated with larger grain particle sizes and/or increased episodes of reverse peristalsis, but not retarded gut passage rates. The present paper reviews the essentially positive impacts of WGF on energy utilisation and feed conversion efficiency and considers the contexts in which these responses may be best realised and the possible mechanisms driving better performance under WGF regimes for chicken-meat production.

scholarly journals Effects of conjugated linoleic acid on growth performance, feed conversion efficiency, and subsequent carcass quality in broiler chickens

2001 ◽  
Vol 85 (4) ◽  
pp. 465-473 ◽  
Author(s):  
Beata Szymczyk ◽  
Paweł M. Pisulewski ◽  
Witold Szczurek ◽  
Piotr Hanczakowski
Keyword(s):  
Fatty Acids ◽  
Linoleic Acid ◽  
Growth Performance ◽  
Conjugated Linoleic Acid ◽  
Conversion Efficiency ◽  
Broiler Chickens ◽  
Feed Conversion ◽  
Feed Conversion Efficiency ◽  
Muscle Tissues ◽  
Cla Isomers

The effect of dietary conjugated linoleic acid isomers (CLA) on growth performance, carcass composition, fatty acid composition of adipose and muscle tissues, and serum lipoproteins was investigated in broiler chickens. A total of 160 (eighty male and eighty female) chickens were allocated to four dietary treatments (0.0, 0.5, 1.0, and 1.5 % CLA) and fed a standard starter diet from 8 to 21 d, and a grower-finisher diet from 22–42 d. When determined for the total period 8–42 d, feed intake and body weight gains of broiler chickens were significantly reduced (from 3.31 to 3.12 kg and from 1615 to 1435 g respectively; P<0.05), particularly at the 1.5 % dietary CLA level. Feed conversion efficiency and carcass yield values showed no significant effects of dietary CLA. Abdominal fat deposition was significantly reduced (from 2.68 to 1.78 %; P<0.05), the relative proportion of breast muscles was unaffected, and that of leg muscles significantly increased (from 19.0 to 20.6 %; P<0.05). The concentration of CLA isomers (% of total methyl esters of fatty acids) increased linearly in tissue samples from broilers fed 0.5, 1.0, and 1.5 % dietary CLA. The relative proportions of saturated fatty acids (16:0, 18:0) were significantly (P<0.01) increased, and those of monounsaturated (16:1, 18:1) and polyunsaturated fatty acids (18:2, 20:4 in muscle tissues) significantly (P<0.05) reduced. Total serum cholesterol concentrations reached a maximum in broilers fed 1.0 % CLA and then decreased slightly (from 141.73 to 136.47 mg/dl; P<0.01). The same was true also for HDL-cholesterol (from 113.58 to 109.97 mg/dl; P<0.01). The HDL cholesterol:total cholesterol ratio and serum triacylglycerol concentration was unaffected. In conclusion, feeding CLA to broiler chickens resulted in substantial incorporation of CLA isomers into their tissue lipids, thus providing a potential CLA-rich source for human consumption.

scholarly journals Performance of broilers fed water-soluble blood meal during growing and finishing period

1970 ◽  
Vol 26 (1) ◽  
pp. 8-12
Author(s):  
MA Habib ◽  
M Shahidullah ◽  
MA Ali
Keyword(s):  
Drinking Water ◽  
Weight Gain ◽  
Conversion Efficiency ◽  
Blood Meal ◽  
Broiler Chickens ◽  
Water Soluble ◽  
Feed Conversion ◽  
Feed Conversion Efficiency ◽  
Net Profit ◽  
Dietary Treatments

The effect of water-soluble blood meal was tested on the performance of broilers. Forty broiler chickens aged 21 days were reared on slatted floor and the dietary treatments were T0, T1, T2 and T3 where 0, 0.25, 0.50 and 0.75 g blood meal was given/L drinking water, respectively. The blood meal significantly enhanced the growth and feed conversion efficiency. The weight gain and net profit was significantly (p<0.001) higher in chickens with 0.25g/L blood meal in water. It is suggested that blood meal at 0.25g/L may be used in drinking water during growing and finishing period of broilers for better performance. DOI: 10.3329/bvet.v26i1.4625 Bangl. vet. 2009. Vol. 26, No. 1, 8-12

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