Impacts of thyme and/or garlic oils on growth, immunity, antioxidant and net farm income in Damascus goats.

This study aimed to evaluate the impact of thyme and/or garlic oil administration on growth performance, immunity, antioxidant, biochemical parameters, and net farm income of Damascus goats. Forty weaned Damascus goats were allocated into four groups. The first group was the control without oral administration, while the 2nd (Th), 3rd (Gr), and 4th (ThGr) groups were orally administrated by (2 ml/goat/day) of thyme oil, garlic oil and their mixture (1:1), respectively during the whole experiment period.

Genetic parameters of production and reproduction traits of Egyptian buffaloes under subtropical conditions.

This research was aimed to investigate the production and reproduction traits and their genetic parameters of Egyptian buffaloes under subtropical environment. Heritability, phenotypic, and genetic parameters were estimated for productive and reproduction traits of first parity This study revealed the averages TMY, 305-dMY, LL, BW, DP, SP, CI, and AFC were 2260, 2150 kg, 271 days, 38.63 kg, 210.

Growth, carcass parameters, biochemical and oxidative stress indices, and meat traits of duck breeds under different stocking densities.

This investigation was aimed to inspect if there is an influence of various stocking density on growth, carcass parameters, blood indices, and meat traits of Muscovy and Mallard ducks. One hundred twenty-six 1-day-old of each Muscovy and Mallard ducks were randomly allocated into three experimental groups with different stocking density. Group one (SD) was 5 ducks/m, while group 2 (SD) was 7 ducks/m and group 3 (SD) was 9 ducks/m.

Reproductive Performance and Culling Rate of Purebred Holstein Cows and Their Crosses With Fleckvieh and Brown Swiss Cows Under Subtropical Conditions.

This study aimed to elucidate the reproductive performance of purebred Holstein (HO) cows with their crosses with Fleckvieh (FV) and Brown Swiss (BS) cows under subtropical conditions. A total of 677 cows [487 HO, 104 HO × FV (HFV); 50% FV and 50% HO and 86 HO × BS (HB); 50% BS and 50% HO] were enrolled in this study. Pure HO cows had significantly greater service per conception (S/C; 3.

Potential impact of stocking density on growth, carcass traits, indicators of biochemical and oxidative stress and meat quality of different broiler breeds.

The aim of the current study to investigate the potential impact of different stocking densities on growth performance, carcass traits, indicators of biochemical and oxidative stress and meat quality of Arbor Acres and Ross-308 broiler breeds to recommend the better stocking density with low production cost simultaneously with high quality. A total of 312 one-day old of each Arbor Acres broiler and Ross-308 were randomly classified into 3 experimental groups with different stocking density, each of 6 replicates. The first group (SD) was 14 birds/m (28 kg/m), while the second group (SD) was 18 birds/m (36 kg/m) and the third group (SD) was 20 birds/m (40 kg/m).

Immunological Responses and the Antioxidant Status in African Catfish () Following Replacement of Dietary Fish Meal with Plant Protein.

African catfish () were subjected to a 30-day feeding trial to determine the appropriateness of using plant protein (PP) (soybean and sunflower meal) as a fishmeal (FM) replacement in the diet and its effects on immune status, antioxidant activity, pituitary adenylate cyclase-activating polypeptide () gene expression, and disease resistance. A total of 150 (51.01 ± 0.

Growth, Hemato-Biochemical Parameters, Body Composition, and Myostatin Gene Expression of Fed by Replacing Fishmeal with Plant Protein.

In this study, we evaluated the consequences of replacement of fishmeal with plant protein sources (soybean and sunflower meal) on fish growth parameters, haemato-biochemical factors, body composition, and myostatin gene expression of . A total of 150 were organized in glass aquaria into five investigational groups, with each group in triplicate (30 fish/group; 10 fish/replicate). Group 1 was fed a control diet (15% fishmeal).

Principal component analysis of breeding values for birth weight milk and reproductive traits of the Egyptian buffalo.

This study was conducted to estimate the genetic parameters and breeding values for birth weight (BW) and reproductive and milk traits of the Egyptian buffalo. Moreover, the relationship among the estimated breeding values was analyzed using the principal component analysis, and selection index was constructed to improve performance. A total of 65,734 records of 2426 buffalo cows calved from 1980 to 2018 were collected from five buffalo experimental herds to estimate the genetic parameters and breeding values and then standardized for use in the principal component analysis with covariance matrix.

Does light intensity affect the behavior, welfare, performance, meat quality, amino acid profile, and egg quality of Japanese quails?

The current study aimed to explore the impact of different light intensities on behavior, welfare, performance, meat quality, amino acid content, and egg quality of Japanese quails. A total of 600 1-day-old Japanese quail chicks were used (300/batch). Chicks were homogeneously classified into 3 groups (each of 100); low (10 lux), moderate (50 lux).

The effect of rosemary extract and lactic acid on the quality of refrigerated broiler fillets.

The current study investigated the effect of rosemary extract (0.2% RE) and lactic acid (1% LA) on some freshness, bacterial parameters and formation of biogenic amines during refrigeration of broiler fillets. Ninety broiler fillet samples were divided into three groups (each 30).

Performance, carcass traits, meat quality and amino acid profile of different Japanese quails strains.

Poultry production is considered one of the prospective opportunities to accomplish sustainable and quick production of superior protein to challenge the growing mandate for animal protein. Therefore, this study was aimed to explore the difference on growth performance, carcass traits, meat quality and amino acid profile of different Japanese quails strains. A total of 480 quail chicks of four different plumage colors (120 of each white, golden, gray and brown) were collected after hatching.

Growth performance, carcass characteristics, meat quality and muscle amino-acid profile of different rabbits breeds and their crosses.

Meat production efficiency can be enhanced by crossbreeding to capture heterosis. This study aimed to investigate the impact of rabbit genotype on growth performance, carcass traits, meat quality and amino acids profile. A total of 504 weaned rabbits from nine genotypes of full factorial crossing of New Zealand White (NZW), Californian (CA) and Rex (RX) were used.

The effect of stillbirth on reproductive and productive performance of pure Egyptian buffaloes and their crosses with Italian buffaloes.

High rates of stillbirth in buffaloes are not only emotionally and economically undesirable but also contrary to animal welfare practices. Thus, this study was aimed to investigate risk factors for stillbirth and analyze its effects on the productive and reproductive performance of pure Egyptian buffaloes (PE) and their crossing with the Italian buffaloes (F crosses 50%PE and 50%Italian buffaloes and Back cross (BC) 75%PE and 25%Italian buffaloes) under subtropical environmental conditions. Records of a total of 8388 (5169PE, 1494F and 1725BC) were used in this study with 1965 actual first parity records (489, 621 and 855, respectively).

Maternal and non-maternal factors associated with late embryonic and early fetal losses in dairy cows.

Defining factors associated with embryonic and/or fetal losses will be helpful in overcoming such problem, either by adjusting conditions or applying therapeutic approaches to high-risk cows. The objective of this study was to investigate the association between a number of maternal and non-maternal factors and the risk of late embryonic (LED) and early fetal death (EFD) in dairy herds. Additionally, we investigated the effect of treating pregnant cows either with GnRH on day 26 post-insemination, or GnRH on day 26 plus CIDR insertion between days 26 and 33 post-insemination, on the risk of LED/EFD.

The potential effect of temperature-humidity index on productive and reproductive performance of buffaloes with different genotypes under hot conditions.

The current study was aimed to investigate the impact of THI on productive and reproductive indices of PE and F crosses (50% PE and 50% Italian buffaloes) and back crosses (BC) (75% PE and 25% Italian buffaloes) under hot conditions. In this study, 8385 records used PE (1914, 1518, and 1737), F (387, 447, and 657), and BC (495, 585, and 645) for low, medium, and high THI, respectively. The high THI reduced the conception rate after first insemination in PE, F, and BC ((odds ratio, OR) = 1.

Impact of three THI levels on somatic cell count, milk yield and composition of multiparous Holstein cows in a subtropical region.

In Egypt, cow's milk represents 52.11% of the total milk production. Climatic condition is mainly expected to impact the welfare and productive performance of livestock animals.

The impact of cross-breeding Egyptian and Italian buffalo on reproductive and productive performance under a subtropical environment.

The aim of this study was to investigate the reproductive and productive performance of pure Egyptian (PE) buffaloes and their crosses with Italian buffaloes. In this study, 2969 dairy buffaloes were used (1599 PE; 615 F crosses, 50% PE and 50% Italian buffaloes; and 755 backcross [BC], 75% PE and 25% Italian buffaloes). When compared to PE, the BC and F had a significantly lower incidence of calving difficulty (odds ratio [OR] = 0.

Associations of Leptin and Pituitary-Specific Transcription Factor Genes' Polymorphisms with Reproduction and Production Traits in Dairy Buffalo.

This study aimed to detect the genetic variability in Leptin and Pit-1 genes using polymerase chain reaction-restriction fragment length polymorphism and DNA sequencing also to explore their possible associations with reproductive and productive traits of Egyptian buffaloes. Regarding Leptin gene, three genotypes (AA, AG and GG) were identified with frequency of 0.54, 0.

Reproductive performance of Brown Swiss, Holstein and their crosses under subtropical environmental conditions.

Selection has been emphasized for increasing production traits with ignoring the fertility traits, which leads to a general loss of reproductive fitness. The aim of this study was to evaluate the reproductive performance of the pure Brown Swiss (BS), Holstein (HO), their first-generation crossbred (F1), and backcross (BC) cows under subtropical Egyptian conditions. The reproductive performance and health traits were measured in the pure BS, HO, their F1, and BC crossbred, in addition to investigating the impact of temperature-humidity index level (THI) on reproductive traits.

Correlation between broiler lameness and anatomical measurements of bone using radiographical projections with assessments of consistency across and within radiographs.

Lameness represents a major welfare and production issue in the poultry industry with a recent survey estimating 27% of birds lame and 3% unable to walk by 40 d of age. A variety of factors may induce lameness and are typically grouped into 2 broad classes on the basis of being infectious or skeletal in nature with the latter accounting for the majority of cases. The current work sought to build upon a large body of literature assessing the anatomical properties of bone in lame birds.

The effect of keel fractures on egg production, feed and water consumption in individual laying hens.

The impact of keel bone fractures on egg production, egg weight and feed and water consumption in individual laying hens. A total of 165 Lohmann brown laying hens were obtained from a commercial farm that consisted of 105 with keel fractures and 60 without keel fractures. 2.

Prevalence of nematode infection and faecal egg counts in free-range laying hens: relations to housing and husbandry.

1. Faecal samples from 19 commercial, 65 week old free-range egg laying flocks were examined to assess the prevalence and number of parasitic nematode eggs. Data were collected to characterise the housing, husbandry, behaviour and welfare of the flocks to examine possible relationships with the egg counts.

Do laying hens with keel bone fractures experience pain?

The European ban on battery cages has forced a change towards the use of non-cage or furnished cage systems, but unexpectedly this has been associated with an increased prevalence of keel bone fractures in laying hens. Bone fractures are acutely painful in mammals, but the effect of fractures on bird welfare is unclear. We recently reported that keel bone fractures have an effect on bird mobility.