Food safety knowledge among farming households in Irepodun local government area, Kwara State, Nigeria

A.O. Awoyemi, M.N. Ajiboy, G.B. Adesiji, A.O. Kayode

Department of Agricultural Extension and Rural Development, P.M.B. 1515, University of Ilorin, Kwara State, Nigeria

(Manuscript received 21 November 2018; accepted for publication 22 April 2019)

Abstract. The study assessed the food safety knowledge and practices among farming households in Irepodun Local Government Area (LGA) of Kwara State, Nigeria. Irepodun LGA was purposively selected due to the large population of farmers in the area. Two-stage sampling technique was used to randomly select one hundred and four (104) respondents from five villages, namely: Elerinjare, Batanyin, Igbo-owu, Omode and Idofian. Primary data were used for the study and the data were collected by means of an interview schedule. Descriptive statistical tools such as precision counts, frequencies and percentages were used in analyzing the data while Pearson Product Moment Correlation (PPMC) analysis was used to test the hypothesis. The findings revealed that the mean income was 156375.50 NGN (441.74 USD) per annum, majority of the farming households have low knowledge towards food safety practices. Constraints to food safety practices include: lack of knowledge, inadequate training and awareness and inadequate finance. PPMC analysis showed that income and educational level was significantly related to the food safety practices among farmers across the selected farming households P≤0.05. Based on the findings, training and effective monitoring by relevant stakeholders, adequate provision of modern technology, sensitization and enlightenment campaigns will further boost farming household’s knowledge and attitudinal changes towards food safety and ultimately safe food for the people.

Households’ consumption willingness for locally processed rice in Kogi State, Nigeria

A.O. Ojo, O.M. Animoku, M.A. Ojo

Department of Agricultural Economics and Extension Technology, Federal University of Technology, P.M.B. 65, Minna, Niger State, Nigeria

(Manuscript received 1 November 2018; accepted for publication 4 March 2019)

Abstract. Importation of rice in Nigeria discourages local production and hinders the realization of the self-sufficiency goal of the Nigerian Government. With improvement in processing technology and information on its health benefits, consumers of rice are gradually shifting ground for locally produced rice. Hence, this paper explores the priority of local rice in household food expenditure in Kogi State, Nigeria. Simple randomized sampling technique was used to select a sample of 120 respondents. Primary data were sourced from civil servants within the locality. Statistical tools involved descriptive statistics and regression models for the assessment of the households’ attitude, their monthly expenditure, determinants of consumption preference and demand for local rice. The findings revealed that the majority of the households preferred local rice due to the good health benefits and palatability, among others. About 58.3% of the households spent ₦20000 – ₦40000 (1 NGN = 0.0028 USD) on food while 72.2% spent about ₦5000 on local rice monthly. Household income, household size, age, taste, expenditure on food and non-food were the main factors that affected preference for local rice. The study also indicated that local rice in the study area was price elastic and income inelastic. Increased awareness of the nutritional benefits of local rice and its quality improvement has increased the consumers’ preference for local rice in the area.

 

Boar taint and meat quality characteristics of entire male and castrated male pigs

 

I.G. Penchev

Department of Morphology, Physiology and Nutrition, Faculty of Agriculture, Trakia University, 6000 Stara Zagora, Bulgaria

(Manuscript received 22 February 2019; accepted for publication 25 April 2019)

 

Abstract. The aim of the present research was to study the chemical composition, technological traits and intensity of boar taint of meat in entire male (EM) and surgically castrated male (CM) pigs. The study included 46 male pigs, cross F1 (Landrace x Danube White), fattened to average live weight 90 kg. In terms of chemical composition, the higher water and lipid content of the meat of entire male pigs, compared to the meat of surgically castrated male pigs was not statistically significant. A significant difference in the meat’s technological traits – pH values, water-holding capacity, cooking losses and tenderness between the two groups of male animals ware not found. The influence of the factor “castration” was reported in trait marbling of meat (p<0.001). There were statistically significant differences in the values of L*, b* and Hue angle, defining the color characteristics of the meat.

Heavy metals analysis in some freshwater and marine fish species from markets of Lahore, Pakistan

M.A. Hadyait1, A. Ali1, S. Salim1, M. Shahzadi2, E.M. Bhatti1, U. Pasha1

1Fish Quality Control Labs, Fisheries Research and Training Institute, Lahore, Pakistan
2Department of Chemistry, Government Postgraduate, Islamia College for Women Cooper Road, Lahore, Pakistan

(Manuscript received 28 November 2018; accepted for publication 19 March 2019)

Abstract. Muscle portion of 72 fish samples of eight selected species, four from marine (Pampus Chinensis, Otolithes ruber, Trachipteridae and Oncorhynchus tshawytscha) and four from fresh water (Labeo rohita, Catla catla, Rita rita and Walago atu) fishes were collected from three superstores in Lahore, Pakistan. The prepared fish samples were analyzed for determination of Chromium (Cr), Lead (Pb) and Cadmium (Cd) concentrations by using the inductively coupled plasma (PerkinElmer, Model: Optima 7000DV ICP-OES). It was found that Cd (0.294±0.001 mg/kg) concentration was the highest in Labeo rohita collected from Metro Superstore while the lowest level (0.023±0.000 mg/kg) was in the Oncorhynchus tshawytscha of the same superstore. Species wise concentration of Cd varies significantly. Concentration of Cr (0.172±0.001mg/kg) was the highest in Oncorhynchus tshawytscha collected from Main Fish Market of Lahore while the lowest level (0.002±0.001mg/kg) was in Labeo rohita collected from Hyperstar superstore. Concentration of Pb (0.057±0.000mg/kg) was the highest in Oncorhynchus tshawytscha collected from Metro Superstore while the lowest (0.012±0.001mg/kg) in Otolithes ruber of the same superstore. Species wise concentration of Pb varies non-significantly. Origin wise t-test shows that: a) Cd concentrations vary significantly, while Cr and Pb concentrations vary non-significantly when marine and fresh water species were compared. b) The range of Pb (0.011-0.057 mg/kg) and Cr (0.002-0.172 mg/kg) was within limits and of Cd (0.023-0.297 mg/kg) was higher than the WHO international standards (0.123 mg/kg for Pb, 0.050 mg/kg for Cd and 0.1 mg/kg for Cr) in most of the fish species of main Fish Market Lahore, Hyperstar and Metro store.

Food security status of female-headed households in Mubi North Local Government area, Adamawa State, Nigeria

A.J. Madugu

Department of Agricultural Economics and Extension, Adamawa State University, Mubi, Nigeria

(Manuscript received 5 June 2018; accepted for publication 22 December 2018)

Abstract. This study investigated the food security status of female-headed households (FHHs) in Mubi north local government area (LGA) of Adamawa State, Nigeria. Specifically, the socio economic characteristics and determinants of household food security status of respondents were tested. Structured questionnaire was used to collect data from 80 female headed households using simple random sampling technique from five districts of Mubi north LGA. Analytical tools used were the food security index (FSI) and Binary Logit Regression Analysis. The results showed that majority (57.9%) of the respondents were middle aged, having 1-5 persons in their household and cultivating about 1-3 hectares of land. It further showed that most of the respondents (63.8%) were food insecure. The result further showed that age, household size, educational status, and access to input were significant and therefore regarded as the major determinants of food security in the study area. It also showed that extension service was not significant and thus not a determinant of food security among the respondents. The study concluded that female headed households in the study area were food insecure; it was thus recommended that NGOs, CSOs and other actors should focus more on agricultural activities by providing inputs so as to improve food production and household food security index, furthermore, the result showed that extension service did not influence food security status of respondents, thus, private extension service providers should be established to assist the government in the provision of intensive extension contact/services, this can help to improve food production and subsequent food security status of respondents.

Effects of storage duration and bulb sizes on physiological losses of Agrifound light red onion bulbs (Allium cepa L.)

M.S. Abubakar1*, J.N. Maduako2, M. Ahmed3

1Department of Soil Science, Faculty of Agriculture, Federal University Dutse, P.M.B 7156 Dutse, Jigawa State, Nigeria
2Department of Agricultural and Environmental Engineering, School of Engineering and Engineering Technology, Federal University of Technology Owerri, P.M.B 1526 Owerri, Imo State, Nigeria
3Department of Crop Science, Faculty of Agriculture, Adamawa State University, P.M.B 25 Mubi, Adamawa State, Nigeria

(Manuscript received 9 July 2018; accepted for publication 8 January 2019)

Abstract. The effect of storage duration and bulb sizes on physiological losses of the Agrifound light red onion bulbs stored in an Improved Naturally Ventilated Storage Structure-INVSS (constructed using locally available materials like; sand, cement, wood, corn stalks, wire mesh and grasses) under room condition was studied in 2012. Dry and wet bulb thermometers were installed to measure ambient temperature and relative humidity. Wind velocity was measurement by hand held Anemometer. The onion bulb samples were sorted and graded into three standard size categories (small: <50mm; medium: 50-70mm and jumbo: >70mm in diameter) and kept in the INVSS at the Department of Agricultural and Environmental Engineering Research Farm of Modibbo Adama University of Technology (MAUTECH), Yola. The samples were monitored and data taken on a daily basis for a period of twenty (20) weeks. The data were analyzed with ANOVA in CRD and the means were separated using LSD at p<0.05. The results indicated that storage duration had significant effects (p≤0.05) on weight, rot and sprout losses. Jumbo size onion bulbs had the highest Storage Weight Loss (SWL) by a mean of 5.1%, followed by medium and small size onion bulbs with means of 4.8% and 4.2%, respectively. Storage Sprout Losses (SSL) studied in the three of onion bulb sizes showed higher SSL among the small size Agrifound light red variety than the medium size onion bulbs with respective mean values of 5.0% and 3.8%, while the least value of SSL (2.6%) was observed in Jumbo size onion bulbs. Similar comparison was also made in terms of Storage Rot Losses (SRL) and it showed that relatively higher SRL among the Jumbo size onions (3.3%), followed by medium sizes (3.1%) while the least was observed from the small sizes (2.3%). The findings recommend that the INVSS should be used to store Jumbo and small size onion bulbs for at least 5 months to achieve minimum storage losses. Though, it is not cost effective to store medium size onion bulbs in the INVSS for more than 4 months.

Effect of the diet with commercial dry yeast (Saccharomyces cerevisiae) on organoleptic qualities, chemical and biological parameters of common carp (Cyprinus carpio L.)

N.M. Abdulrahman1*, I.H. Al-Refaiee2, H. Ali Mutter3

1College of veterinary medicine, University of Sulaimani, Sulaimaniya, Iraq
2Ministry of Agriculture, Al- Anbar province, Iraq
3College of Agriculture, University of Anbar, Al- Anbar province, Iraq

(Manuscript received 9 July 2018; accepted for publication 31 January 2019)

Abstract. The purpose of the present study was to evaluate the replacement of different levels of animal protein concentrate (APC) with a commercial dry yeast Saccharomyces cerevisiae in diets on common carp performance. The experiment was conducted in the fish laboratory of the Department of Animal Production, College of Agricultural Sciences, University of Sulaimani in Kurdistan region of Iraq for the period from 25.07.2015 to 15.10.2015. Starting with a period of acclimatization for 21 days, to test the efficiency of using commercial dry yeast S. cerevisiae as alternative protein source to APC used in the manufacturing of diets for common carp (Cyprinus carpio L.) by using 90 fish at weights ranged 22-42g divided into 15 groups distributed randomly on 15 plastic containers by five treatments with three replicates per each variant. The treatments contain different levels of APC and yeast S. cerevisiae as follows: first treatment (Control T1): 100% APC / 0.00% yeast S. cerevisiae; second treatment (T2): 75% APC / 25% yeast S. cerevisiae; third treatment (T3): 50% APC / 50% yeast S. cerevisiae; fourth treatment (T4): 25% APC / 75% yeast S. cerevisiae and fifth treatment (T5): 0.00% APC / 100% yeast S. cerevisiae. There was no significant difference observed in the value of biological indices for some physiological organs, spleen and Hepatic pancreases and also in the value of the condition factor (CF) between carps from different treatments. The results of the chemical composition of the fish flesh showed significant difference in the moisture of individuals from T4 as compared with these from T2 and T5, T2 was significantly increased in crude protein as compared with other treatments, T5 had significant differences in fat crude as compared with other treatments, T1 and T2 were significantly different in ash as compared with other treatments, T1 was significantly different in carbohydrates as compared with other treatments. The results showed no significant differences observed among experimental treatments in Panel test of tenderness, color, juiciness, flavor and overall acceptance for fish meat.

Colour and rehydration properties of bay leaves dried by convective and microwave methods

A. Polat, N. Izli

Department of Biosystems Engineering, Agriculture Faculty, Bursa Uludag University, Gorukle Campus, 16059 Nilüfer, Bursa, Turkey

(Manuscript received 26 July 2018; accepted for publication 30 November 2018)

Abstract. This study aims to evaluate the effect of the convective and microwave dying methods on the colour parameters (L*, a*, b*, C,  and ΔE) and rehydration ratio of bay leaves. Drying experiments were conducted using 350 and 460W of microwave powers and air temperatures of 50, 60 and 70C. Different microwave powers show significant effect on colour of dried bay leaves. Increasing microwave power, a* (redness/greenness),  (hue angle) and ΔE (total colour changes) values increased whereas L* (lightness), b* (yellowness/blueness) and C (Chroma) values decreased. For the convective drying, although there are changes in the values of the colour parameters (L*, a*, b*, C and ), there are no significant differences in the values of the total colour changes (ΔE) statistically (P>0.05). The effect of microwave power levels and air temperature on rehydration characteristics was determined. It was found that the rehydration ratio values decreased with an increasing temperature and increasing power levels. The highest rehydration ratio was recorded for the samples dried at 350W and the lowest ratio was seen in a sample dried at 70°C. Microwave drying can be a practical drying process, an alternative to convective drying for drying bay leaves.

Quantity and quality of wool yolk in Caucasian Merino rams

D. Pamukova1*, G. Staykova2, N. Stancheva2

1Department of Animal Husbandry- Ruminant Animals and Dairy Science, Faculty of Agriculture, Trakia University, 6000 Stara Zagora, Bulgaria 2Agricultural Institute, 9700 Shumen, Bulgaria

(Manuscript received 2 September 2018; accepted for publication 5 November 2018)

Abstract. The aim of this study was to determine the quality and quantity of the wool yolk of the rams from Caucasian merino breed in order to improve their technological features. The analyses included seven rams at 2.5 years of age and eleven male lambs at the age of 18 months. Thirty-six individual wool samples from two parts of the body (side and thigh) were studied. The following wool parameters were investigated: percentage of the dirty areas of the wool (on the side and the thigh), fat amount, sweat amount, pH of sweat, laboratory wool yield, and color of greasy wool on the side. Percentage of the dirty areas of the wool by categories and topographic ranges varied from 30.79% to 41.52%, indicating that the wool yolk of Caucasian rams was of sufficient quantity and good quality. The percentage of the fats in wool yolk to the greasy wool was relatively high (23.25% in the male lambs at the age of 18 months and 25% in the rams) and had a negative impact on the wool yield. The ratio of fat/sweat was 1.91:1 in rams at 2.5 years of age and 1.44:1 in male lambs at the age of 18 months). The higher relative part of the fat compared to the sweat was an indicator of good protective properties of the wool yolk. That allowed to protect the technological properties of the wool.

Proximate composition, lipid quality and heavy metals content in the muscle of two carp species

A. Merdzhanova*, V. Panayotova, D.A. Dobreva, K. Peycheva

Department of Chemistry, Faculty of Pharmacy, Medical University, 9000 Varna, Bulgaria (Manuscript received 2 August 2018; accepted for publication 12 October 2018)

Abstract. The aim of the presented study was to characterize the quality of edible tissue of freshwater common carp (Cyprinus carpio) and bighead carp (Aristichthys nobilis), based on their proximate and lipid composition (lipid classes, fatty acid profile, fat soluble vitamins, carotenoids and cholesterol). Health risk assessment was evaluated based on the analysis of some toxic elements (As, Cd, Ni, Pb and total Hg). Proximate composition (moisture, crude protein and total lipid) was determined using standard procedures. Lipids were subsequently separated into neutral (NL) and polar lipids: Phospho- (PL) and Glycolipids (GL) by means of column and thin-layer chromatography. Lipid classes were derivatized into fatty acid methyl esters (FAMEs) which were analysed by gas chromatography–mass spectrometry (GC-MS). Vitamins A, D3 and E, beta-carotene, astaxanthin and cholesterol were analysed simultaneously using high performance liquid chromatography (HPLC). Heavy metals (As, Pb, Cd, Hg and Ni) were determined by optical emission spectrometry with inductively coupled plasma (ICP-OES) following a microwave digestion procedure. Protein content was higher in bighead carp (18.5%) and lower for common carp (15.5%), whereas lipid content showed opposite trend. Similarities in lipid classes distribution were observed for both species: NL>GL>PL. Neutral lipids constituted approximately 70% of TL in both species, as FAs profile was dominated by monounsaturated fatty acids (MUFA), whereas polyunsaturated FAs (PUFA) prevailed in polar fractions. Omega-3 PUFAs were higher in all lipid classes compared to omega-6 PUFAs. Cholesterol content was low (17-24 mg.100-1g ww). Astaxanthin was detected only in bighead carp, whereas beta-carotene, vitamin D3 and vitamin A showed similar concentrations in both samples. Vitamin E content was higher in bighead carp (10.4 mg.100 g-1 w.w.). Trace elements content was higher in bighead carp showing a maximum value of As (0.312 mg.kg-1 w.w). All determined toxic elements were found below the recommended value in carp muscle. The results of the present study confirmed the high quality and safety of common carp and bighead carp meat. These freshwater species are valuable sources of essential nutrients such as proteins, vitamin D3 and long chain omega-3 PUFAs. Together with the nutrients, the information for low concentrations of toxic elements makes them valuable components of a healthy human diet.