Soheila Ebrahimi; Mohammad Hassan Fathi Nasri; Homayoun Farhangfar
Abstract
Introduction: Today, animal nutritionists and experts are looking for solutions to produce high quality animal products. In lamb meat, post-mortem biochemical changes, such as lipid oxidation, lead to off-odours and flavour development that have negative impact on the shelf life of these products. Therefore, ...
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Introduction: Today, animal nutritionists and experts are looking for solutions to produce high quality animal products. In lamb meat, post-mortem biochemical changes, such as lipid oxidation, lead to off-odours and flavour development that have negative impact on the shelf life of these products. Therefore, the possibility to extend the shelf life of lamb meat is a primary objective of the meat industry. Some of plant compounds are excellent source of natural antioxidants that can improve the shelf life and quality of meat mainly by inhibiting fat oxidation and microbial growth. Saffron petal (SP) is one of the by-products of saffron, which is a plant source rich in flavonoid compounds and anthocyanins, and annually large amounts of it discard as a waste product. Also, the use of these residues in animal feed, cause the reduction of environmental pollution. Therefore, the aim of this research was to investigate the effect of feeding of SP on performance, blood parameters and antioxidant status of blood and meat of Afshari fattening lambs.
Materials and methods: Eighteen male Afshari lambs aged four to five months with an average initial weight of 17±2.5 kg in a completely randomized design were used. Experimental treatments were included: 1) control (basal diet without SP), 2) basal diet supplemented with 1.5% SP and 3) basal diet supplemented with 3% SP (DM basis). The experimental period was 84 days and lambs were slaughtered at the end of the experiment.
Results and discussion: The results showed that the addition of SP to the diet had no effect on feed intake, daily weight gain and nutrient digestibility. The amount of plasma urea in lambs fed with both levels of SP and the concentration of plasma glucose, cholesterol and triglyceride in lambs fed with 3% of SP significantly decreased (P<0.05). In lambs fed with 3% SP, the total antioxidant capacity and activity of glutathione peroxidase enzyme in blood and longissimus lumborum (LL) muscle was increased and the amount of malondialdehyde in the blood and LL muscle was decreased (P<0.05). But the activity of superoxide dismutase in the blood was not affected.
Conclusion: Overall, the results of this research showed that adding 3% of SP to the diet of fattening lambs without affecting the performance, improved the antioxidant status of the blood and increased the shelf-life durability of meat.
Reza Khodaverdi; Mohammad Hassan Fathi Nasri; Hassan Fazaeli; seysd homayoon farhangfar
Abstract
Introduction: The use of agricultural plants resistant to environmental stresses, such as fodder beet, is inevitable in water shortage conditions. Such products have high moisture, which makes it difficult to store them. Total mixed ration (TMR) silage can be a good solution for this problem. This research ...
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Introduction: The use of agricultural plants resistant to environmental stresses, such as fodder beet, is inevitable in water shortage conditions. Such products have high moisture, which makes it difficult to store them. Total mixed ration (TMR) silage can be a good solution for this problem. This research was carried out in order to evaluate the feasibility of using of using TMR silage containing 25 or 35% of fodder beet (DM basis) in the feeding of fattening lambs by in vitro and in vivo methods. Material and Methods: In the in vitro experiment, diets containing two levels of fodder beet (25% and 35%, DM basis) were ensiled as TMR silage for 60 days and some important silage fermentation properties were evaluated. In the in vivo study, diet containing 25% fodder beet was used in the feeding of fattening lambs in two forms of TMR silage (60-days silage) and TMR for 70 days.Results and Discussion: The amount of dry matter, crude protein (CP), neutral detergent fiber, acid detergent fiber , water-soluble carbohydrates, crude fat and ash in the whole plant (aerial organ and root) of fodder beet were 17.1, 11.1, 35.9, 19.6, 50.1, 0.59 and 8.1 percent, respectively. Silage fermentation properties and aerobic stability were significantly affected by diet and time (P<0.05). Increasing the level of dietary fodder beet, decreased pH and concentrations of CP, true protein and starch of experimental silages. The pH value of silage containing 25% fodder beet on the 15th day and the pH value of silage containing 35% fodder beet on the ninth day of the aerobic stability test compared to the concentration on the first day of reopening suffered aerobic spoilage with an increase of half a unit (4.73 vs. 4.17 and 4.53 vs. 3.94, respectively) which indicates the weaker aerobic stability of silage containing 35% fodder beet. Lambs fed with TMR silage, consumed more (P<0.05) dry matter than the control group (1914.7 vs. 1756.9 g/day), and other performance indices did not show significant differences. The concentration of all blood parameters in the experimental lambs was in the normal range, which shows that the lambs did not suffer from metabolic problems or special complications by feeding the experimental diets.Conclusion: Based on the results obtained from this research, feeding TMR silage containing 25% fodder beet caused better fermentation characteristics and aerobic stability compared to 35% level, and it seems that it can be used for feeding fattening lambs, without any adverse effect on performance and health.
Mehran Takekhalaf; Mohammad Hassan Fathi Nasri; Ladan Rashidi; Seyyed Homayoun Farhangfar
Abstract
The effect of using different levels of olive cake on production, milk composition and antioxidant atatus of dromedary camels, an experiment using 9 Turkmen dromedary camels with milk production of 5 ± 0.7 kg/day and average weight of 500 ± 30 kg a 3 three-week periods (14 days of adaptation ...
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The effect of using different levels of olive cake on production, milk composition and antioxidant atatus of dromedary camels, an experiment using 9 Turkmen dromedary camels with milk production of 5 ± 0.7 kg/day and average weight of 500 ± 30 kg a 3 three-week periods (14 days of adaptation and 7 days of sampling) was investigated in the form of a change over design with 3 treatments and 9 replications. The experimental treatments were included: 1- control group, 2- treatment containing 15 percent olive cake and 3- treatment containing 30 percent olive cake. Feed intake and milk production were not affected by experimental treatments. Milk fat percent a nd yield and milk protein percent (2.5, 0.11 kg and 2.66, respectively) decreased due to use of olive cake in the diet (P<0.05). There was no difference in the concentration of most of fatty acids and the ratio of omega-6 to omega-3 fatty acids in the milk of camels fed experimental diets, but concentration of palmitic acid in camels that consumed 30 percent olive cake was lower than control group (P<0.05). According to the results of this research, the use of olive cake (in the level of 30 percent of ration DM) in camel feeding, may have positive effects on increasing the nutritional value of dairy products especially in arid and semi-arid areas.
Seyyed Ahmad Hosseini; Mohammad Hassan Fathi Nasri; Homayoon farhangfar; masood didarkhah
Abstract
In this study, the nutritional value of four camel rangeland plants, including Alhaghi Sp (AS), Haloxylon persicum (HP), Seidlitzia rosmarinous (SR) and Tamarix Gallica (TG) in different phenological growth stages including vegetating, flowering and seeding were evaluated. Rangeland species were ...
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In this study, the nutritional value of four camel rangeland plants, including Alhaghi Sp (AS), Haloxylon persicum (HP), Seidlitzia rosmarinous (SR) and Tamarix Gallica (TG) in different phenological growth stages including vegetating, flowering and seeding were evaluated. Rangeland species were randomly sampled and their chemical composition were measured. Rumen digestibility of dry matter was assessed using a fistulated camel. The results showed that the amount of crude protein of AS and SR was higher than that of other species, Also, the lowest levels of natural detergent fibers, acid detergent fibers and tannins were observed in SR (P <0/05). Slowly degradable fraction, degradation rate and effective degradability of SR was significantly higher than other species (P <0/05). Results of this study showed that SR was better than other rangeland species due to its high crude protein content and lower acid detergent fiber and phenolic compounds, so it was used instead of alfalfa at three levels of zero, 50 and %100 in camel’s diet. Feeding SR did not affect milk yield and its components including fat, lactose and total solids. Dry matter intake of dairy camels decreased with increasing of SR in diet, but milk protein and urea nitrogen increased (P <0/05). The results of this study indicated that replacement of alfalfa hay with SR in feeding dairy camels while maintaining camel production performance, reduce the cost of feeding camel and made it more economical to rear this valuable livestock.
Rana Delkash Taleshmekail; mohammad hassan fathi nasari; homayoun farhangfar; mohsen mojtahedi
Abstract
The aim of this study was to investigate the effect of bentonite, kaolin and activated carbon on the absorption of Cu, Fe and Mn by in vitro and in vivo methods in Baluchi lambs. In vitro experiment, the binders effect on the minerals absorption was investigated in a completely randomized design ...
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The aim of this study was to investigate the effect of bentonite, kaolin and activated carbon on the absorption of Cu, Fe and Mn by in vitro and in vivo methods in Baluchi lambs. In vitro experiment, the binders effect on the minerals absorption was investigated in a completely randomized design with factor arrangement with standard solutions of Cu, Fe and Mn with concentrations of 7, 20 and 30 mg/l, respectively, four levels of binders (no binders, 10, 20 and 40 g/l) and three pHs 5.5, 6.4 and 7.5 and incubation for 60 min. In vivo experiment, bentonite, kaolin and activated carbon including 0, 10 and 20 g/kg DM were added to diet of 36 fattening lambs (6-7 months) for 90d in a completely randomized design. Feed intake, weight gain and blood and wool concentration of Cu, Fe and Mn were measured on 0, 45 and 90d. In vitro experiment, activated carbon had the highest and kaolin had the lowest mineral absorption by increasing binders levels and pH (P<0.05). In vivo experiment, the effect of treatments on feed intake, body weight, weight gain, feed conversion ratio and blood and wool concentration of Fe were not significant.The concentration of Cu and Mn in the blood and wool in lambs fed with binder were lower than control treatment (P<0.05). In general, the use of binders, especially activated carbon at low concentrations, causes less absorption of minerals. In vitro methods can be used to select binders instead of animal experiments.
Ghasem Motaghinia; Homayoun Farhangfar; Mohsen Ahmadi Shahrakht; Abdolahad Shadparvar; Majid Jafari
Abstract
Effects of lamb and parents coefficient of inbreeding (CI) on wool weight were studied using 10,868 wool records belonging to 3,244 Iran Black lambs (1,633 males and 1,611 females) representing 96 rams and 995 ewes collected during 1983-2006 from Animal Breeding Station of Abbas Abad. Year and month ...
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Effects of lamb and parents coefficient of inbreeding (CI) on wool weight were studied using 10,868 wool records belonging to 3,244 Iran Black lambs (1,633 males and 1,611 females) representing 96 rams and 995 ewes collected during 1983-2006 from Animal Breeding Station of Abbas Abad. Year and month of shearing, CI of lamb and dam, sex and birth type had significant affect on wool weight Among 3,244 pedigree animals, 3,005 heads (92.6 percent) were found to be inbred. Mean and standard deviation of CI of lamb, sire and dam in whole population were 8.1±6.1, 6.5±6.1 and 5.3±5.8 percent, respectively. The corresponding figures in inbred population were 9.0±5.7, 7.0±6.1 and 5.7±5.8 percent, respectively. Minimum and maximum CI of lamb was 0 and 36.4 percent, respectively. Increase of CI by one percent was accompanied with a decrease of 26.9 g (quadruplet male), 4.8 g (twin female), 4.3 g (triple female) and 13.1 g (quadruplet female) in wool weight. A decrease of 1.4 g in wool weight of lamb was observed as the CI of dam was increased by one percent. Statistically significant annual change trend were estimated to be 0.2±0.02 percent and 0.1±0.02 percent for whole and inbred populations, respectively. A controlled mating is needed to reduce deleterious effects of inbreeding.
Maryam Moghadam Mousaabadi; Homayoun Farhangfar; Moslem Bashtani; AliReza Eghbal
Abstract
The objective of the present research was to apply logistic analysis for investigating some factorsaffecting incidence probability of milk fat depression (MFD) in early lactation of Iranian Holstein cows.The data set was comprised 80381 test day records (milk, fat and protein traits) belonging to 80254 ...
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The objective of the present research was to apply logistic analysis for investigating some factorsaffecting incidence probability of milk fat depression (MFD) in early lactation of Iranian Holstein cows.The data set was comprised 80381 test day records (milk, fat and protein traits) belonging to 80254 firstparity cows in 427 herds with calving year between 1995 and 2009. Based on fat to protein percentagesfor the first month of the lactation and also with respect to threshold point of -0.12, dependent variablewas defined as a dichotomous (zero code for lack of MFD and unit code for MFD) variable. A logisticmixed generalized linear model was fitted on the data using GLIMMIX procedure of SAS software. Inthe model, fixed effects of sperm type (local or exotic), production season, first calving age, cow type(grade or pure Holstein) and random effect of animal’s sire were included. Cow type had no significantaffect on MFD. Estimation of odds ratio for comparing different ages was found to be 1.112 indicatingthat cows calving at lower age of 25 months are expected to show MFD by 11.2 percent smore than thecows calving at the greater ages. The estimate of odds ratio for comparing of spring with summer, autumnand winter seasons were 0.73, 0.722 and 1.182, respectively. The corresponding figures for summer ascompared to autumn and winter seasons were 0.987 and 1.615, respectively, and autumn as compared towinter was found to be 1.636. Daughters of the local bulls are expected to show MFD by 10.8 percentmore than that of the daughters of the foreign bulls.