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Effect of Different Slaughter Weights on Slaughter and Carcass Traits of Male Karayaka Lambs Reared under Intensive Production System
2015
Yüksel Aksoy | Zafer Ulutaş
The present study was conducted to investigate the carcass traits of Karayaka lambs slaughtered at different slaughter weights (SWs) and to find out optimum SWs. Male Karayaka lambs with 20 kg live weight (n=30) constituted the animal material of the study. Lambs were randomly divided into five SW groups; 30 (GI; n=6), 35 (GII; n=6), 40 (GIII; n=6); 45 (GIV; n=6) and 50 (GV; n=6) kg. Lamb fattening feed (concentrate feed, ad libitum) and forage (lentil straw, 100g/lamb/day) were used as the feed material. Lambs were sent to slaughter at target SWs. Following the slaughter, non-carcass components, tailless hot and cold carcass weights were taken. Carcasses were separated into six sections as leg, foreleg, back, loin, neck and others. Physical dissection was performed to investigate carcass composition. Only the differences in carcass dressing and skin percentages of slaughter groups were not found to be significant. Increasing carcass fat percentages and decreasing carcass lean and bone percentages were observed with increasing SWs. Considering the consumer preferences, current findings revealed that Karayaka lambs should be sent to slaughter at weights between 30-35 kg. However, considering the red meat deficit of the country, current market conditions and producer preferences, the optimum SW for Karayaka lambs were recommended to be between 40-45 kg.
Show more [+] Less [-]Scrotal Circumference as a Parameter of Breeding age for West African Dwarf Bucks.
2015
Lukman Oladimeji Raji | Oluwatoyin Oluwasola Ajala
This study evaluated the correlation between scrotal circumference (SC), body weight (BW) and body condition score (BCS) in relation to breeding age in West African Dwarf (WAD) bucks. A total of 320 WAD bucks from birth to 15 months of age from various farms in Ibadan, Nigeria, were studied. They were grouped as A-birth to 3, B-4 to 7, C-8 to 11 and D-12 to 15 months old respectively, comprising of 80 bucks per group. Semen was collected from 10 randomly selected bucks in each group and analysed. Results showed positive correlation between SC and age; SC increased with age; and at about 8 months of age and over, a consistent SC of 17 cm–18 cm was observed. BW also increased with age; BW significantly affected SC. Also, at 8 months of age and over, SC of 17 cm-18 cm was observed from 9 kg BW and above. However, the correlation between SC and BCS was low and not significant. Semen analysis revealed the best semen quality for groups C and D bucks. In conclusion, we suggest that WAD bucks of 8 months and above, with at least SC between 17 cm–18 cm and of over 9 kg BW, could be used to breed does successfully on the farm.
Show more [+] Less [-]Cattle Housing at the Registered Farms under Cattle Breeders’ Association in Ödemiş, İzmir.
2015
Erdal Yaylak | Yusuf Konca | Nursel Koyubenbe
The objective of this study was to determine barning conditions of dairy farms registered to Cattle Breeders Association (CBA) Ödemiş district of İzmir. The 92 farms were selected among members of the CBA by proportional sampling method. The farms were divided into three groups according to the number of cattle: group 1 from 5 to 20, group 2 from 21 to 40 and group 3 with over 41 heads, respectively. The farms were divided into three groups according to the number of cattle: 5-20; 21-40 and over 41 heads, respectively. The research results indicated that 76.1% of the barns were shed type, 15.2% were corral, 8.7% were completely closed-up. The flooring types of these barns were a mixed of concrete and soil (73.9%), concrete (19.6%) and soil (6.5%). The stocking density for group 1, 2 and 3 were 22.2 m2, 19.5 m2 and 18.2 m2 per cow, respectively. The barns had a range of full cattle capacity from 12.5 m2 to 15 m2 per cow. But none of the farms surveyed did not use fully capacity of the barn. The present running capacity of farms were between 55% and 80%. It was observed that 19.6% of farms had a individual calf section, 82.6% had a night lighting at the barn, and 64.1% had a seperate concenrated feed store. All the farms were milked with milking machines. The percentage of farms with bucked milking machine was 47.8%, those with an air pipeline system was 37% and those with parlour system was 15.2%. None of farms had manure pit. Consequently, as herd size grow, the presence of free barn, calving pen, feed store and milk cooling tank increase. It can be concluded that improving the housing conditions is much more related with increasing the herd size per farm.
Show more [+] Less [-]Effect of Follicle Size and Follicle Stimulating Hormone Concentration on Nuclear Maturation of Bovine Oocytes In Vitro
2015
Uğur Şen | Emre Şirin | Ercan Soyadan
The aim of the study was to investigate the effect of follicle size and follicle stimulating hormone (FSH) concentration on nuclear maturation of bovine oocytes in vitro. Follicles on bovine ovary were classified into 3 groups according to the diameter; small (
Show more [+] Less [-]Effects of Cold and Heat Stress on Egg Quality Traits of a Newly Developed Native Hybrid Layer
2015
İsmail Durmuş | Serdar Kamanlı
ATAK-S is a newly developed native hybrid layer. Although the laying performance of this hybrid has been studied and determined, the performance response of the hybrid to different environmental temperature conditions is not known. This study was therefore undertaken to determine the effect of cold and heat stress on egg quality traits. Hens were divided into three different groups; control (20°C), low (12°C) and high (32°C). A total of 360 hens, with 120 in each of the groups, were used in the study. Hens were held in three tier battery cages in an environmentally controlled poultry house. The study lasted for 3 weeks. No differences were found among different groups in terms of shape index, albumen height and Haugh unit of the egg quality traits. It was found that the differences among the heat groups in terms of egg shell breaking strength, egg weight, shell thickness and yolk colour were significant and the value of these traits decreased under the heat stress conditions, whereas they were not affected from the cold stress.
Show more [+] Less [-]Absorption Of Dietary Lipid Components
2015
Abdulkadir Hurşit
Although the digestion and absorption of lipids that are necessary for the survival of living organisms are well known in general terms, nevertheless how different lipids to be digested, how it is distributed into the bloodstream, and how to be used by the cells, are unknown issues by most non specialist people. In recent years, knowledge of lipid digestion and absorption has expanded considerably. More insight has been gained in the mechanism of action of H + pump as a transport system in fatty acid absorption. New knowledge gained on the structure-function relationship and mechanisms of action of several lipolytic enzymes in the gastrointestinal tract. This work intends to give an up to date view of lipid digestion and absorption.
Show more [+] Less [-]Effect of Excess Dietary Methionine on the Performance of Laying Hens of Various Live Body Weight
2015
Şahin Çadırcı | Gonca Özmen Özbakır | Ayfer Bozkurt Kiraz
An experiment was conducted with laying hens to determine the effects of feeding excesses of methionine in a practical layer diet. One hundred and thirty two laying hens at 61 weeks of age were used for the experiment. Two body weight groups (light and heavy) and three levels of mehionine were assigned to six groups of laying hen in a 2x3 factorial design. The diets were a 16.5% crude protein corn and soybean meal positive control diet (0.33% methionine), and this diet fortified with 1.00% additional DL-Methionine or 1.50% additional DL-Methionine. The diets were fed ad libitum to the hens for 10 consecutive weeks of production. For the total production period, body weight gain, hen-day egg production, egg weight, egg mass, daily feed intake and feed conversion ratio were not significantly different among any of the treatments in the two body weight groups (P>0.05). The study indicated that considerable tolerance exists in laying hens for individual excesses of the DL-Methionine commonly used as supplement in poultry diets.
Show more [+] Less [-]The Survival of Bifidobacterium infantis 20088 and Physicochemical Changes During Refrigeration Storage of Selected Fermented Traditional Sudanese Fruit Beverages
2015
Wala Salah Elden Babekir | Abubakar Awad Siddig | Barka Mohammed Kabeir
This study was carried out to evaluate survival of Bifidobacterium infantis 20088 in fermented beverage formulated from selected traditional Sudanese fruits Gudaim and dom. The viable counts of the strain and physiochemical changes during refrigeration were determined. 10% beverages (w/v) were prepared from dom and gudaim powder. 2.5% (w/w) skim milk was supplemented to each formulation to provide the required nutrient for bacteria growth during the fermentation. After sterilization and cooling, the mixture was inoculated with a 10% culture of B. infants 20088 followed by incubation for 36 h at 37°C. Reconstituted skim milk was used as control. Fermented beverages were held at refrigeration (4°C) for a period of 2 weeks. During the refrigeration storage of the fermented beverages there was significant reduction in Bifidobacterium infantis of all fermented beverages. Nevertheless, the strain was maintained high; fulfill the number required to presence in probiotic foods, which was at least 6 log CFU/ml fermented product. There was no significantly difference in TSS and pH as compared to their initial at the beginning of fermentation except in pH of fermented gudaim. Therefore gudaim and dom are suitable carrier to deliver Bifidobacterium infantis 20088 to consumer.
Show more [+] Less [-]Economic Analysis of Fruit Sapling Producing Enterprises in Hatay Province
2015
Nuran Tapkı | Faruk Emeksiz | Erdal Dağıstan
In this study, examined the economic analysis of fruit sapling producing enterprises in Hatay Province. The data were obtained from 92 enterprises by the method of full count and face to face with producers. Enterprises were classified as three groups according to the production capacity of fruit sapling trees. First group (1 to 50.000 number sapling), second groups (50.001 to 100.000 number sapling) and third group (more than 100.000 number sapling).The average gross production value is 590.083 TL in enterprises and fruit sapling sales account for 75.38% of the gross production value in enterprises. Gross output, net profit and agricultural income are calculated as 593.108 TL, 365.200 TL and 411.980 TL. In addition to the average fixed costs and variable costs are found as 80.828 TL and 109.842 TL in enterprises respectively. Also, the cost of per sapling and selling price of saplings were calculated as 1.87 TL and 3.36 TL. As a result, net margin is higher in III. group enterprises which have more production capacity than the others.
Show more [+] Less [-]An Overview of Food Emulsions: Description, Classification and Recent Potential Applications
2015
Meltem Serdaroğlu | Burcu Öztürk | Ayşe Kara
Emulsions take place partially or completely in the structures of many natural and processed foods or some foods are already emulsified in certain stages of production. In general “emulsion” is described as a structure created through the dispersion of one of two immiscible liquids within the other one in form of little droplets. Many terms are available to describe different emulsion types and it is very important to define and clarify these terms like “macro emulsion”, “nanoemulsion” and “multiple emulsion”. Nanoemulsions become increasingly important in food industry as an innovative approach in carrying functional agents. Application potential of multiple emulsions (W/O/W) is also stated to be very high in food industry. The two main strategic purposes of utilization of multiple emulsions in food applications are to encapsulate various aromas, bioactive compounds or sensitive food compounds and to allow the production of the low-fat products. This review provides an overview to the general terms of emulsion types, the role of various emulsifying agents, and the application potential of emulsions in food industry.
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