Effect of Protein Levels in Diet on Production and Emissions in WLH Layer

Kumari, K. Nalini; Chandra, Kondapalli Ravi; Kumar, Dhulipalla Srinivas

doi:10.14737/journal.aavs/2016/4.7.357.362

Cited by 5 publications

(3 citation statements)

References 20 publications

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“…Neither DFI nor daily energy intake were been affected by dietary CP levels studied (Table , 2). This result was agreed with the findings by Kumari et al (2016) who found that increasing protein content of the diet resulted in increases in the body weight. In the same trend Yakout (2010) indicated that the best value of body weight gain was obtained by layers fed high-CP diets.…”

Section: Resultssupporting

confidence: 93%

Performance of Sinai Laying Hens Fed Tow Levels of Energy in Diets Containing Three Levels of Protein

Alderey

El-Weshahy

2019

Journal of Animal and Poultry Production

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This experiment aimed to study effects of metabolizable energy and protein levels on the productive and reproductive performance of Sinai laying hens from 24 to 40 wk. A total of 180 Sinai laying hens was randomly assigned to six experimental diets of 2,850 (H ME = high ME), or 2,700 = low ME) kcal of ME/kg, each containing CP levels of 18% (H CP = high CP), 16% (M CP = medium CP), or 14% (L CP = low CP) in a 2× 3 factorial arrangement of treatments. Each dietary treatment contained 30 single-caged birds. The results were obtained as follows: final body weight (FBW), change in body weight (CBW), daily protein intake, daily energy intake, protein efficiency ratio (PER), energy efficiency ratio (EER), feed conversion ratio (FCR), egg number (EN), egg weight (EW), daily egg mass (EM), hen-day egg production rate (HDEP), were significantly improved in birds fed the high-energy-diets (P<0.01) compared with those fed the low-energy-diets. However, birds fed the low-ME diets consumed more feed compared with fed on high-energy-diets. Birds fed the diets termed as (H CP or M CP ) displayed significantly higher (P≤0.01) final body weight (FBW) and change in body weight, egg number and hen-day egg production rate than those received the low-CP diet (P<0.01). Increasing dietary protein level led to a gradual improvement in FBW (g), CBW, daily protein intake, EER, FCR, egg number, egg weight, daily egg mass and hen-day egg production rate. Interactions between ME and CP levels in the previously mentioned criteria were significant (P<0.05). Plasma cholesterol was significantly increased as a result of feeding on the high-ME diets compared with those given the low-ME diets. The same trend was also observed in respect of protein levels where there were significant differences on plasma activity of ALT which significantly increased (P≤0.01) when hens were fed on the high-CP diets compared with those fed on the diets containing L CP and M CP . Plasma cholesterol was significantly increased (P≤0.01) by increasing ME level in the diet with any dietary protein level compared with other treatment groups.The present results revealed that the diets containing ME level of 2,850 kcal/kg with 18 or 16% protein can improve egg production characteristics of Sinai laying hens. From the economic view point it can be suggested that a diet containing 16% protein with 2850 kcal/kg is optimal for Sinai laying hens to achieve the highest profitability compared with other treatments during studied period from 28-40 weeks of age.

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Section: Resultssupporting

confidence: 93%

Performance of Sinai Laying Hens Fed Tow Levels of Energy in Diets Containing Three Levels of Protein

Alderey

El-Weshahy

2019

Journal of Animal and Poultry Production

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“…In respect of protein, our results were consistent with those of Kumari et al (2016), who noticed that a diet high in protein increased body weight. Also, Alagawany et al (2020) found that the hens fed an 18% CP diet had the best final BW and BWC values compared with those fed 16% protein content.…”

Section: Table (2): Effect Of Dietary Energy Levels Protein Levels An...supporting

confidence: 92%

Productive Performance of Silver Montazh Laying Hens Fed Diets Containing Different Levels of Protein and Energy

Alderey,

Dorgham

2024

Egyptian Journal of Nutrition and Feeds

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he energy and protein content of the diet play an important role in adjusting the bird's consumption to meet its needs for growth and to begin producing eggs. The purpose of this study was to look into how energy and protein levels affected laying performance, egg quality, fertility, hatchability rate and some blood parameters. A total of 144 Silver Montazah laying hens 24-weeks-old were randomly divided into six treatments in a 2 × 3 factorial design using two metabolizable energy levels (2700 and 2850 Kcal ME/kg) and three protein levels: low (14%), medium (16%), and high (18%). The birds were kept individually in cages, with 24 hens for each treatment. The results can be summarized as follows: Birds fed on higher energy content exhibited significantly (P≤ 0.01) increased in final body weight (FBW), change in body weight (CBW), feed conversion ratio (FCR), egg production (EP) parameters and cholesterol level compared to low-energy diets. However, hens provided with low-energy diets had an increased significant (P≤0.1) in daily feed intake (DFI), daily protein intake (DPI), protein efficiency ratio (PER), and metabolizable energy efficiency (MEE). Birds fed 18%-protein diets exhibited significant increases in FBW, CBW, DPI, PER, FCR, EP, MEE, and alanine amino transferees than those fed on 14% -protein diets. Birds fed 16 or 18% protein with a high energy level showed improvements in FBW, CBW, FCR, and EP. In addition, blood cholesterol levels significantly increased compared to other treatments. Furthermore, hens received 16% -protein diet with the low-energy level scored the greatest values in aspartate transaminase, but the same energy level with 18% protein resulted in a significant (P≤0.01) increase in ALT compared to other treatments. Hens fed a diet of 16% protein with a 2850 Kcal/kg diet achieved the highest economic efficiency compared to other groups.From an economic point of view, it is clear that a diet of 16% protein and 2850 Kcal/Kg is the most optimal for Silver Montazah laying hens to maximize productive performance during the 24 -to -39 -week study period.

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“…Among other reasons, this is driving the urge to find alternatives for imported soybean meal in poultry diets. Besides that, the emission of nutrients such as nitrogen and phosphorus via the poultry manure contributes to the environmental impact of the poultry production (Kumari et al, 2016).…”

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confidence: 99%

Low crude protein diets supplemented with free amino acids in laying hens : effects on performance, egg quality, N-efficiency, N-excretion, economics and diet carbon footprint

Harn¹,

Far²,

Krimpen³

et al. 2021

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Effect of Protein Levels in Diet on Production and Emissions in WLH Layer

Cited by 5 publications

References 20 publications

Performance of Sinai Laying Hens Fed Tow Levels of Energy in Diets Containing Three Levels of Protein

Performance of Sinai Laying Hens Fed Tow Levels of Energy in Diets Containing Three Levels of Protein

Productive Performance of Silver Montazh Laying Hens Fed Diets Containing Different Levels of Protein and Energy

Low crude protein diets supplemented with free amino acids in laying hens : effects on performance, egg quality, N-efficiency, N-excretion, economics and diet carbon footprint

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