Sürdürülebilir Kalkınma Amaçları
Yayınlar
- MakaleAçık Erişim2020The Effects of Boron (Orthoboric Acid) Supplementation into Diets on Serum Lipid and Protein Profiles of Hens During Late Laying Period
Kaya, Hacer; Macit, Muhlis
This study was carried out to determine the effects of boron addition into the diets on serum parameters of hens. A total of 288 Lohman laying commercial hybrid chickens of 62 weeks were fed for 12 weeks with four different rations containing basal feed 0 (B0), 50 (B50), 75 (B75) and 150 (B150) mg / kg B. Each group was replicated in 18 cages, four hens per cage. During the study, 16 hours lighting program was applied, feed and water were given as ad-libitum. The effect of boron supplementation was not significant on the rates of diacylglycerol and hydrocarbon+cholesterol esters (P>0.05) but the rates of polarlipid, triacylglycerol (P<0.05), and serum total cholesterol (P<0.01) were found significant. Lipid peroxidation values of groups fed with diets including 75 and 150 mg/kg B were determined lower than others. Addition of ration B affected different molecular weight proteins at different levels. In conclusion, it has been determined that the addition of B at different levels into the diets of laying hens during late laying period significantly influenced the serum lipid peroxidation, serum lipid and serum protein profile, but further researches are needed to clarify the changes related to the effects of B addition into diets on mentioned parameters of laying hens.
- MakaleAçık Erişim2019The Effects of Boron (Orthoboric Acid) Supplementation Into Diets of Hens During Late Laying Period on Performance and Some Serum Parameters
Kaya, Hacer; Macit, Muhlis
This study was carried out to determine the effects of boron (orthoboric acid) addition to the diets of hens in the late laying period on performance and some serum parameters. Two hundred eighty-eight Lohman commercial laying hens which are 62 weeks old were fed with 0, 50, 75, and 150 mg/kg of B for 12 weeks. The research was carried out in 18 replicates, and four laying hens were used for each replicate. During the research, 16-hour lighting was applied and feed and water were given as ad-libitum. Supplementation of different level of B did not alter the live weight change and average egg weight from performance characteristics, but egg production increased and also feed efficiency and daily feed intake reduced (P<0.01). Serum glucose, cholesterol, triglycerides, creatinine, total and direct bilirubin values were not affected by additional B. While addition of B into the diets of laying hens did not affect the outcomes of serum alkaline phosphatase (ALP), aspartate amino transaminase (AST) and gamma glutamyl transaminase (GGT) enzyme activities (P>0.05), but alanin amino transaminase (ALT) was affected by Boron (P<0.05). It is concluded that in order to have a positive effect on performance of laying hens in the late laying period, 50 mg/kg B supplementation is adequate and may be suggested.
- MakaleYalnız künye2009Effects of various ages of weaning on growth performance of morkaraman lambs
Aksakal, Vecihi; Emsen, Ebru; Ozdemir, Memis; Macit, Muhlis
This study was conducted on 46 Redkaraman lambs born at the Ataturk University, Agricultural Faculty Sheep Research Farm. The lambs were weaned at different ages such as 45, 60 and 75 days. After weaning, the lambs were sent to the pasture and fed on concentrate including 15.3% crude protein in a ratio of 1.5% of live body weight for the first 6 weeks thereafter, amount of feed was increased to 2% of the live body weight in addition to pasture at the evenings. Live body weights and daily weight gaing of lambs were determined from 45 days to end of the grazing period within 14 days intervals. Live weights at 45 days for the lambs weaned at 45, 60 and 75 days were 12.20, 11.58 and 12.47 kg and at 60 days were 14.38, 14.79 and 15.40 kg and 75 days were 15.30, 16.06 and 17.28 kg. Live weights at the end of the grazing period were 34.86, 35.11 and 38.93 kg for the lambs weaned at 45, 60 and 75 days of age, respectively. The differences among the group were found significant (p<0.05) for live weights at the end of the grazing period. Daily weight gains of lambs in the groups were found as 144.5, 145.7 and 164.0 g for the end of the grazing period; 137.3, 142.6 and 160.5g for the 46 days of age and 136.5, 135.5 and 157.0 g for 61 days of age. The differences among the group were found significant (p<0.05). The results of this research indicated that there were significant (p<0.05) differences for the live weights at the end of the grazing period in Redkaraman lambs weaned at various ages, also there were significant (p<0.05) differences for daily weight gains at the end of the grazing period, 46 and 61 days of age.
- MakaleYalnız künye2009Effects of various ages of weaning on growth characteristics, survival rate and some body measurements of Awassi lambs
Aksakal, Vecihi; Macit, Muhlis; Esenbuga, Nurinisa
This study aimed to investigate the effect of various ag es (45, 60 and 7 5 days) of weaning on growth, survival rate and some body characteristics in Awassi lambs. Following weaning, the lambs were separated from their dams and taken to the pasture and were fed with concentrate including 15.3% crude protein in the evenings in addition to the pasture. The live weights and daily weight gains of the lambs were determined by weighing at 14 days intervals starting from day 45 till the end of pasture. Five females from each group were used in the determination of body measurements. In the study, in the lambs weaned at the age of 45 (group I), 60 (group JT) and 75 (group III) days old; birth weight and live weights on days 45, 60, 75, 120 and 210 (end of pasture) were calculated on average as 4.58,11.58, 13.95, 15.95, 21.54 and 34.44 kg, respectively and in the significance checks performed, it was identified that there was no significant (p<0.05) difference between the groups except for the day 210 live weight. There was not any difference observed between the groups in terms of Daily Live Weight Gain (DLWG). It was identified that the effect of the age of dam on live weight in lambs was insignificant in all periods that the effect of type of birth was very significant (p<0.05) except for the day 120 live weight and that the effect of sex was significant (p<0.05) in birth, day 60, 75 and 210 weights and very significant (p<0.01) in day 120 live weight. On looking at the survival rate characteristics, it was observed that this was lower in the group weaned at 45 days old on days 120 and 210 at a statistically significant (p<0.05) level compared to the other two groups. Furthermore, it was identified that singletons exhibited a higher survival rate at a statistically very significant (p<0.01) level compared to twins. The effect of weaning at various ages on the body measurements was found to be insignificant except for the chest width measured on day 210. Consequently, it may be said that taking into consideration the live weight gains and survival rate characteristics of Awassi lambs, the most suitable weaning age may be arranged as 60 days old.