Effect of Dietary Lysine and Sex on Performance and Immunity Parameters of Japanese Quails
نویسندگان
چکیده
The present study was conducted to investigate the effects of dietary lysine (Lys) and sex on growing quail performance and immunity parameters. The six dietary Lys: 10, 11.5, 13.0 (NRC 1994 recommendation), 14.5, 16.0 and 17.5 gr/kg were provided. The other essential amino acids except lysine were provided to meet or exceed NRC 1994 recommendation for growing quail. This experiment was carried out in a complete randomized design arrangement from 3 to 24 days of age. Each treatment was consisted of 5 floor pens (50 quail chicks). Body weight (BW), body weight gain (BWG) increased significantly (P< 0.05) with dietary Lys supplementation up to 14.5 gr/kg Lys. The quails that consumed 14.5 gr/kg dietary Lys had the best feed conversion ratio (FCR). The carcass weight, breast weight and yield, thigh weight and yield, mortality and humoral immunity (response to sheep red blood cell) were significantly (P< 0.05) affected by dietary Lys. The breast yield, thigh weight and yield, white blood cells count, monocyte percentage and response to SRBC significantly (P < 0.05) influenced by sex. Neither age nor sex had any significant effect on lymphocyte percentage, heterophile percentage and heterophile to lymphocyte ratio at 24 d of age. In this study an interaction of sex with Lys were not significant (P > 0.05) for any traits. it concluded that optimum BW, BWG, FCR, immunity status at 24 day of age could be obtained with a 14.5 gr/kg Lys diet, so these level is more than, NRC 1994 recommendation. Furthermore, humeral immune system functions of quails were improved numerically by fortifying diets with Lys in excess of NRC 1994 recommendation, although it did not differ statistically with NRC 1994 recommendation level. Future research, however, should compare dietary Lys effects on immune system functions of quails reared in conventional environments or during an infectious challenge.
منابع مشابه
Lysine Requirements of Female Japanese Quails Base on Performance and Carcass Variables from Twenty-One to Forty-Two Days of Age
The present research was conducted to estimate the dietary lysine (Lys) requirement of growing female quail base on performance and carcass constitutes at 24 to 42 d of age. A dose-response diet mainly based on corn, corn gluten and soybean meal was used. Lys content was minimized in dose-response diet (10 g/kg) while assuring the minimum levels of all other essential amino acids in a manner th...
متن کاملEffect of Vegetable Oil Source and L-Carnitine Supplements on Growth Performance, Carcass Characteristics and Blood Biochemical Parameters of Japanese Quails (Coturnix japonica)
An experiment was conducted to study the effects of soybean, linseed and sunflower oil (various sources of fatty acids) with and without L-carnitine supplements (0 and 50 mg kg-1) on performance, blood biochemical parameters and carcass traits of Japanese quail. One hundred and ninety-two of 7-day old female Japanese quail were randomly assigned to 6 dietary treatments with 4 replicates and fed...
متن کاملEffects of Spirulina platensis on Growth Performance, Carcass Characteristics, Egg Traits and Immunity Response of Japanese Quails
In present study, two trials had been conducted to evaluate the effects of Spirulina platensis (SP) on growth performance, carcass characteristics, egg quantity and quality traits, and immunity response of Japanese quails. In trial 1, a total number of 180 one-day-old Japanese quails were randomly assigned into 6 groups, 3 replicates with 10 quail chicks per replicate. Experimental die...
متن کاملEffect of Dietary Electrolyte Balance and Probiotic on Performance and Carcass Characteristics of Japanese Quails Under Heat Stress Conditions
The present study was performed to investigate the effects of dietary electrolyte balance and probiotic on the performance and carcass characteristics in Japanese quail under heat stress conditions. A total of 672 quail chicks (20-day old) were studied in a three-factor, factorial experiment with 4 replicates and in each replication of 14 birds during 20 to 37 and 20 to 41 days Factors included...
متن کاملInfluence of Different Dietary Levels of Energy and Protein on Reproductive and Post Hatch Growth Performance in Japanese Quails
The response of laying Japanese quails to dietary levels of energy and protein on performance, egg quality, hatchability, fertility and their effect on subsequent offspring live body weight was investigated. A total of 432 Japanese quails (13 weeks old) were divided into nine treatments. Each treatment comprised of four replicates of twelve birds (9 females and 3 males). Nine diets including th...
متن کامل