Experiment was conducted to evaluate effects of different fat sources on breast and thigh meat chemical composition and fatty acid profile in broilers. Treatments were 1) DF1: basal diet + soybean oil; 2) DF2: basal diet + chicken fat; 3) DF2: basal diet + tallow; 4) DF3: basal diet + tallow and lard, and 5) DF5: basal diet + lard. Addition of different fat sources had no significant impact on relative organ weight (P>0.05). Breast meat crude fat content was suppressed in DF1 and DF5 relative to DF4 (P<0.05). Total SFA content was downtrended and total PUFA content was elevated in DF1 relative to other groups for both breast and thigh meat (P<0.05). Total MUFA content did not differ in breast meat, however, it was lower in DF1 and DF3 compared to DF2, DF4 and DF5 (P<0.05). The n-3 PUFA was not affected by fat sources in breast meat, whereas it was elevated in DF1 relative to DF3, DF4 and DF5 in thigh meat (P<0.05). Breast and thigh meat n-6 PUFA was improved in DF1 in comparison to DF2, DF3, DF4 and DF5 in thigh meat (P<0.05). Ratio of PUFA to SFA upgraded in DF1 and DF3, and downgraded in DF2, DF4 and DF5 for breast meat; and upgraded in DF1 than other groups for thigh meat (P<0.05). Breast and thigh meat n-6 to n-3 PUFA was upgraded in DF1 group compared to other groups (P<0.05). To sum up, results indicated that dietary fat sources with different fatty acid content can significantly influence the breast and thigh meat composition and fatty acid profile without negative impact on the relative organ weight. Where DF1 group exhibited better result based on fatty acid profile and lower breast meat fat content which can be preferred for quality broiler meat production.

Common poultry birds like chicken, duck, quail and pigeon meat is gaining interest due to their genetic potentiality and management factors as well as special characters of their meat and egg. With a view to considers consumers demand, promising alternative bird farming and meat quality research, an attempt was undertaken to conduct a preliminary study to compare carcass characteristics, blood parameter, intestinal microbiology and meat composition of quail and pigeon of Bangladesh. The result revealed that, carcass traits, hematological parameters and intestinal microbiology did differ between quail and pigeon (P<0.05). The meat proximate composition data indicated that moisture and ether extract content did differ (P<0.05), however, crude protein and ash content did not differ between quail and pigeon (P>0.05). Thus, the preliminary study suggested that farmers can easily rear quail and pigeon for consumption of meat, however, further detail study can ensure detail physiological aspects and meat quality parameters of quail and pigeon.

Generally, consumers prefer the indigenous chicken meat compare to commercial chicken like sonali or broiler chicken because of their concept of having more nutritious and palatability and ready to pay more. Whether the concept is true or not, and on which aspects, indigenous chicken meat is superior compare to that of commercially reared chicken, validation is required. Therefore, an experiment was conducted to compare the carcass characteristics, meat proximate composition, physico-chemical parameters and sensory attributes of indigenous/deshi, sonali and broiler chicken that are available in the poultry market of Bangladesh. Three types of finisher chicken: indigenous/deshi, sonali and broiler chicken were bought from local market of Bangladesh. Birds were slaughtered following halal method; carcass traits and meat quality parameters were analyzed after collection and processing of meat samples. Result indicated that, there is a variation in the carcass characteristics, proximate composition, physico-chemical attributes and sensory evaluation. Broiler chicken live weight, slaughter weight and abdominal fat was higher as compared to sonali and indigenous/deshi chicken (P<0.05). The dry matter, crude protein and ether extract was higher in deshi chicken followed by sonali and broiler chicken (P<0.05). Drip loss and cooking loss was higher in broiler chicken followed by sonali and deshi chicken, while pH24 was lower in deshi chicken followed by sonali and broiler chicken (P<0.05). Broiler chicken meat was more tender in relation to sonali and deshi chicken (P<0.05), where flavor of deshi chicken meat was higher as compared to the broiler chicken (P<0.05). Result suggested that, based on level of status of people, consumers can choose indigenous or deshi chicken due to better proximate composition and meat flavour; however, sonali and broiler chicken are also acceptable by the consumers with higher carcass weight and meat tenderness with short interval to become marketable weight and cheap price which can be afford by all class of people to meet their protein demand, eventually can secure national human health.

The study was aimed to enumerate the load of psychrotrophic bacteria in raw milk stored in freezer. Raw milk was collected from 18 different sized dairy farms located in Gazipur and Mymensingh district. From each location equal number (three of each) of small, medium or large farms were randomly selected. The raw milk samples were stored in freezer (-18 to -22 oC) for 28 days and analyzed for psychrotrophic bacterial load at every 7 days interval. For total viable count, bacteria was grown onto plate count agar at 70C for 10 days. Bacteria grown under such conditions referred as psychrotrophs. However, to determine the type of psychrotrophs selected colonies were grown further onto pseudomonas agar base and gram staining, oxidase, catalase and methyl red test for each isolate were perfomed. The psychrotrophic bacterial load in all the samples were low until 14 days of storage. However, from the third week of storage the bacterial load was observed to increase which reached to as high as 1.1 ± 2.3×107 cfu/mL at the end of the storage period (28 days). The milk samples obtained from large farms were lower (1.3×105 to 6.6×106) than that of medium (1.7×105 to 8.8×106) and small (2.0×105 to 1.1×107) type farms. The bacterial load was significantly (P<0.01) varied among the samples suggesting the heterogeneous management practices in dairy farms. All the morphological and biochemical tests confirmed the isolates as pseudomonas. Based on the present findings, it could be suggested that raw milk can store in the freezer maximum for two weeks in terms of psychrotrophic bacterial load. Ann. Bangladesh Agric. (2020) 24(1) : 65-76