Effect of Dietary Arginine Supplementation on Some Hormones and Its Relation to Performance of Silver Montazah Chicken. 2- The Effect on Laying Duration.

Abstract

This experiment was conducted in Inshas Poultry Research Station, Ministry of Agricultural, Egypt, A total number of 420 hens and 105 cocks from Silver Montazah chickens (SM) (Egyptian local strain) flock were used to investigate the effect of dietary supplemental of arginine (Arg) levels on plasma nitric oxide (NO) and Insulinlike growth factor (IGF-I), testosterone (Testo) and luteinizing (LH) hormones concentrations, and their relation to productive and reproductive performance during laying period (28-40 wks of age). Birds were randomly divided into 7 experimental groups (each of 3 replicates). Each replicates consisted of 20 hens and 5 cocks. The 1 st group (T1) was fed the basal diet and served as the control group with no additional Arg (15, 12.5 and 12.8 g Ar /kg diet) for the starter, grower and finisher diet, respectively. The 2 nd , 3 rd and 4 th groups were fed the basal diet supplemented with 2, 2.5 and 3 g Arg/kg diet, respectively, from one-day old to 40 wks of age (17, 17.5 and 18 g Arg /kg diet) for the starter, (14.5, 15 and 15.5 g Arg /kg diet) for the grower and (14.8, 15.3 and 15.8 g Arg /kg diet) for the finisher diet was used. However, the 5 th , 6 th and 7 th groups were fed the basal diet (15 g and12.5 Arg/kg diet) for the starter, grower diet and the basal diet supplemented with 2, 2.5 and 3 g Arg/kg diet (14.8, 15.3 and 15.8 g Arg/kg diet) for the finisher diets, respectively, only from 28 to 40 wks of age. Results indicated that hens fed Arg supplementation significantly improved feed conversion ratio (FCR) for all treatments except T2 and T3 groups in compared with control group. Egg production, egg mass and total leucocytes count was higher in treated hens from 28 to 40 wks of age than in control ones. Most semen quality parameters, fertility, hatchability and lymphocyte (L) ratio were improved by dietary treatments. However, hetrophils (H) and H/L ratio were decreased by Arg supplementation. Significant increase (P≤0.05) appear in NO trait, IGF-I, LH and Testo hormones concentrations for hens in T6 and T7 from 28 to 40 wks of age in compared with treated hens from one-day old to 40 wks of age (T2, T3 and T4) and the control group. While, there were no significant differences in live body weight, feed consumption, egg weight and egg quality traits among all treatments in compared with control group at 40 wks of age. It could be concluded that dietary Arg supplementation to SM hens from 28 to 40 might improve the egg production, reproductive performance and some semen quality parameters. Also, it might have a mediated effects on NO, IGF-I, LH and testosterone hormones levels.

Effects of dietary supplementation of herbal active ingredients promoting insulin-like growth factor-1 secretion on production performance, egg quality, blood hematology, and excreta gas emission in laying hens

“…Liu et al [19] reported that the increase of serum IGF-1 concentration in geese corresponded to the improvement of egg weight and egg production rate and the reduction of feed conversion ratio. Sabry et al [20] observed that laying hens with higher serum IGF-1 concentration had a high egg production rate and egg mass and a low feed conversion ratio. Similarly, in this study, laying hens fed the diet supplemented with YGF251 increased the egg weight, egg mass, and serum IGF-1 concentration, whereas decreased the feed conversion ratio, in a dose-dependent manner.…”

Semen Production, Testosterone Profile, and Testicular Histology of Heat Stressed Egyptian Geese Administrated with L-Arginine

“…Under in vitro conditions, AR stimulate sperm motility in different animal species (Radany et al, 1981;Patel et al, 1998) by increasing sperm metabolism (Srivastava et al, 2006). Dietary AR supplementation significantly increased semen volume, percentages of motile and live spermatozoa, and total sperm output/ ejaculate, while decreased abnormal sperm percentage in Silver Montazah cock (Sabry et al, 2016) and Fayoumi and Golden Montazah cockerels (Youssef et al, 2015) as compared to controls.…”

“…In chicken, level of testosterone and LH increased as affected by dietary AR supplementation (Sabry et al, 2016). In mice, AR had a role in testosterone anabolic action (Cremades et al, (2004) and AR supplementations improved the testicular function and semen quality in aged cocks (Abbaspour et al, 2019).…”

“…In mice, AR had a role in testosterone anabolic action (Cremades et al, (2004) and AR supplementations improved the testicular function and semen quality in aged cocks (Abbaspour et al, 2019). Significant improvements in semen quality of Silver Montazah cock (Sabry et al, 2016), Fayoumi and Golden Montazah cockere (Youssef et al, 2015) were reported. Many reports cleared the role of AR in eliminating the negative impact of stress especially in hot climate (Mendes et al, 1997;Tong and Barbul, 2004).…”

Effects of amylin on egg quality traits of hens during the early laying period

“…For example, it increases the transport of tyrosine and Trp to the brain (Banks, 2019). Tryptophan is not only an essential aminoacid for chickens, mainly used for protein synthesis, but also has various metabolic functions in the brain, such as the precursor of serotonin and melatonin (El-Slamoney et al, 2010;Khattak and Helmbrecht, 2019). Serotonin plays an important role in oocyte maturation, embryonic development, laying behavior, and improving intracellular Ca levels (Khattak and Helmbrecht, 2019;Alhajeri et al, 2022).…”