Ali Khalaj Hedayati; Yadollah Chashnidel; Mahdi Dehghan banadaki; Asadollah Teimori Yansari
Abstract
Three Non-lactating Holstein cows equipped with ruminal cannulas were used to determine the impact of different methods of treating soybean meal (SBM) on the ruminal degradability and intestinal digestibility of crude protein and amino acids (AA). Solvent-extracted SBM (Control), Meal processed by adding ...
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Three Non-lactating Holstein cows equipped with ruminal cannulas were used to determine the impact of different methods of treating soybean meal (SBM) on the ruminal degradability and intestinal digestibility of crude protein and amino acids (AA). Solvent-extracted SBM (Control), Meal processed by adding 25% (w/w) water and heated at 150 °C for 30 minutes (treatment 2), Meal heated at 150 °C for 30 minutes (treatment 3), and meal melted xylose by adding 3 moles per mole of lysine and heated at 150 °C for 30 minutes (treatment 4), were incubated in the rumen in nylon bags for 0, 2, 4, 8, 16, 24, and 48 h according to National Research Council (2001) guidelines. Processing of SBM caused the rapidly degradable CP fraction, slowly degradable CP fraction and the constant degradation rate of crude protein was reduce, increase and decreased, respectively (P <0.05). There has a significant differences between treatment on the ruminal disappearance of amino acids except threonine and glycine (P<0.05). Intestinal disappearance of crude protein had no difference between treatments. However, the rate of disappearance of essential amino acids except threonine had differences between treatments (P <0.05). Processing with xylose improved bioavailability of the lysine (P <0.05). Results had shown that there have differences between RUP amino acid profile of original SBM and processed products.
Seyyed Saeid Mousavi; Hamid Amanlou; Ali Nikkhah; Ali Moustafa Tehrani; Hamid Reza Mirzaei Alamouti
Abstract
The aim of this study was to investigate the effect of reducing metabolizable protein with rumen-protected Lysine and Methionine in diet during the last 5 weeks of gestation on performance and blood parameters of Afshari ewes and lambs. Twenty five mature (once lambing) ewes in a Unbalanced complete ...
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The aim of this study was to investigate the effect of reducing metabolizable protein with rumen-protected Lysine and Methionine in diet during the last 5 weeks of gestation on performance and blood parameters of Afshari ewes and lambs. Twenty five mature (once lambing) ewes in a Unbalanced complete randomized design fed with diets containing low metabolizable protein but containing rumen-protected lysine and methionine (LMP + LMRP) and high (HMP), respectively, 20 percent less than and equal to recommendations of NRC (2007), The results showed no difference between the treatments regarding dry matter intake, body weight of ewes at the end of gestation, body weight changes from start of the experiment until the birth, body weight after lambing and 20 days post lambing (p>0.05). Decline changes in Body weight at lambing was increased in the HMP group rather than LMP+LMRP group and the difference was tend to significant (p
Negin Amiri; Mohammad Salarmoini; Shima Tasharrofi; Mohadeseh Eslami
Abstract
This study was conducted to evaluate the effects of in ovo feeding of different nutrients on hatchability, initial weight after hatch, growth performance, blood parameters, immune organs and intestinal morphology of broiler chicks. The experiment was conducted in a completely randomized design with 5 ...
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This study was conducted to evaluate the effects of in ovo feeding of different nutrients on hatchability, initial weight after hatch, growth performance, blood parameters, immune organs and intestinal morphology of broiler chicks. The experiment was conducted in a completely randomized design with 5 treatments, 3 replicates and 16 fertile eggs from Ross 308 breeders (28 Week old) in each replicate. Experimental treatments Included: without injection (control) and injection of 0.7 ml of different nutrients into the yolk sac of fertile eggs on 14.5 d of incubation period, including: distilled water (sham), amino acids, dextrin 10% and dextrin 20%. Chicks were fasted for 36 hours after hatch.The results showed that in ovo injection of amino acids can led to heavier birth weight, in compare to sham and control treatments. Chicks hatched from eggs treated with dextrose 10% showed significantly the highest weight gain in 22- 42 d priod. Also, at the same time, chicks hatched from egges injected with distilled water (sham) showed significantly the highest feed intake and FCR. Blood glucose level after hatch were significantly lower in control and shame treatments than other treatment. Blood cholesterol level was significantly lower in shame treatment. In ovo injection of dextrin 10% led to higher relative weight of thymus (at 7 d of age). Also, the lowest relative weight of bursa at 42 d was for control treatment.Jejunal villus highet in chicks aged 3 d was significantly higher for those hatched from eggs treated with dextrin 10%.In conclusion, it seems that in ovo injection of nutrients especially dextrin 10% and 20% can be helpful to improve the performance of broilers.
Hossein Janmohammadi; Hassan Nassiri Moghadam; Abolgasem Golian; Javad Pour Reza; Mohsen Danesh Mesgaran
Abstract
Amino acid (AA) content of six meat and bone meal (MBM) samples was determined by ion-exchange chromatography. True AA digestibility of amino acids were determined of using precise sibbald's feeding method. Metionin and Lucien, with averages of 0.35 and 2.29 percent, had the lowest and highest values ...
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Amino acid (AA) content of six meat and bone meal (MBM) samples was determined by ion-exchange chromatography. True AA digestibility of amino acids were determined of using precise sibbald's feeding method. Metionin and Lucien, with averages of 0.35 and 2.29 percent, had the lowest and highest values among essential AA of MBM samples. Average content of individual AA, sum of essential and non-essential AA and sum of AA values were lower than the corresponding values in NRC (1994). Individual digestibility values of AA, sum of essential and non-essential AA, Sulfur AA and sum of AA were not significant different among MBM samples Except Met and Pro (p<0.05). Average digestibility values of Cys and Arg were 73.7 and 89.4 percent which were respectively the lowest and highest AA digestibility values among MBM samples. It was concluded that AA digestibility values of MBM samples were at high levels but due to their low content MBM samples, their digestible AA content values were at low levels.
Kazem Yussefi Kelarikikolaee; Hossein Moravej; Seyyed Abdollah Hosseini; Abbas Pakdel
Abstract
The objective of this study was to investigate the effects of different levels of amino acid and feeding methods on performance and immune system of broiler chickens. Experimental design was based on completely randomized design in a factorial arrangement with 3 feeding methods [control (ad libitum feed ...
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The objective of this study was to investigate the effects of different levels of amino acid and feeding methods on performance and immune system of broiler chickens. Experimental design was based on completely randomized design in a factorial arrangement with 3 feeding methods [control (ad libitum feed intake), intermittent feeding (IF) and continuous feed withdrawal (FW)), and 2 amino acid levels (level recommended by Arian and 8 % more). Each treatment was replicated 6 times with 23 male broilers per replicate. The CFW method was associated with a decreased mortality rate (P<0.05). The IF and FW methods improved feed conversion ratio (P<0.05). In CFW and IF feeding programs, the relative weight of spleen was increased (P<0.05). At higher amino acid level, the percentage of circulatory lymphocyte was decreased and that of heterophil and heterophil to lymphocyte ratio were increased (P<0.05). In conclusion, it seems that the FW feeding regimen with Arian recommended amino acid level might have a positive effect on the cellular but not the humeral immune system with no adverse effect on growth performance.
Seyed Naser Mousavi; Mahmoud Shivazad; Mohammad Chamani; Housahang Lotfolahian; Ali Asghar Sadeghi
Volume 42, Issue 2 , October 2011, , Pages 153-160
Abstract
In this research 400 Ross 308 breeder fertile eggs were weighed At day 16 of incubation and evenly distributed into 4 treatments with 4 replicates per treatment and 25 eggs per replicate in a CRD design. On day 18 of incubation, 1 ml of an in ovo feed solution including: I) Carbohydrate (CHO), II) Amino ...
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In this research 400 Ross 308 breeder fertile eggs were weighed At day 16 of incubation and evenly distributed into 4 treatments with 4 replicates per treatment and 25 eggs per replicate in a CRD design. On day 18 of incubation, 1 ml of an in ovo feed solution including: I) Carbohydrate (CHO), II) Amino acid (AA), and III) Butyric acid solution in 0.5% saline was injected into amniotic fluid of eggs. The control group remained non-injected. After injection eggs were transferred to hatcher. Upon hatch, chicks were weighed, sexed and transferred to the experimental house and reared to 42 days. At day two the midpoint of the jejunum was sampled for intestinal morphometric examination. The hatchability didn't differ significantly between treatments. Body weight and body weight to egg weight ratio of all in ovo injected hatchlings was greater than in controls (P
