Mehran Takekhalaf; Mohammad Hassan Fathi Nasri; Ladan Rashidi; Seyyed Homayoun Farhangfar
Volume 24, Issue 4 , December 2022, , Pages 463-476
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 ...
Read More
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
Volume 22, Issue 4 , December 2020, , Pages 560-569
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 ...
Read More
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
Volume 22, Issue 2 , June 2020, , Pages 249-258
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 ...
Read More
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
Volume 16, Issue 1 , May 2014, , Pages 1-9
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 ...
Read More
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
Volume 15, Issue 2 , October 2013, , Pages 79-88
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 ...
Read More
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.