74 research outputs found
Artificial Insemination in Farm Animals
No full textArtificial insemination is used instead of natural mating for reproduction purposes and its chief priority is that the desirable characteristics of a bull or other male livestock animal can be passed on more quickly and to more progeny than if that animal is mated with females in a natural fashion. This book contains under one cover 16 chapters of concise, up-to-date information on artificial insemination in buffalos, ewes, pigs, swine, sheep, goats, pigs and dogs. Cryopreservation effect on sperm quality and fertility, new method and diagnostic test in semen analysis, management factors affecting fertility after cervical insemination, factors of non-infectious nature affecting the fertility, fatty acids effects on reproductive performance of ruminants, particularities of bovine artificial insemination, sperm preparation techniques and reproductive endocrinology diseases are described. This book will explain the advantages and disadvantages of using AI, the various methodologies used in different species, and how AI can be used to improve reproductive efficiency in farm animals
Poultry Science
No full textWhen it comes to life science and specially by considering animal-origin protein, one of the main topics to gain importance with respect to human nutrition and health is poultry science. This book presents an introductory overview to the different fields/branches of poultry science with four main divisions: different feed resources for poultry, biofilms of salmonella and campylobacter in the poultry industry, prevention of different contaminants in modern poultry farms, and mycotoxins in poultry feed. This book will be beneficial for the graduate students, teachers, researchers, farmers, and other professionals, who are interested to fortify and expand their knowledge about chicken products in fields of poultry science, biotechnology, plant science, and agriculture
ORIGINAL ARTICLE Corresponding Author Effect of Feeding Different levels of Aflatoxin in the Diets on Production Performance of Broiler Breeders
No full textABSTRACT A study was conducted to investigate the effect of feeding diets containing different levels of aflatoxin B 1 (AF) viz., 0, 300, 400 and 500ppb on the performance of broiler breeders. The breeder hens aged 28 weeks were fed with four treatment diets: Control (0ppm), (300 ppb), (400 ppb) and (500 ppb) for three periods, each with a duration of three weeks from 28 to 36 weeks of age. Feeding of AFB 1 at 300 and 400ppb did not reveal any significant changes in the performance. However, Inclusion of 500ppb AF in the diet significantly (P≤0.05) reduced feed consumption, feed efficiency, egg production, fertility and hatchability. The results indicated no significant (P≥0.05) effect of AF on body weight of breeders
Soil plasticity determination using manafi method and apparatus
No full textDetermination of soil plasticity is of great importance in geotechnical engineering projects. Consistency of soil can be expressed in terms of Atterberg limits of soils. Liquid limit and plastic limit tests are among the two most regular tests for determination of index properties of fine grain soils. Soil classification of fine grain soils is based on results of Atterberg limit tests. In addition, many engineering properties of soils can be correlated to the results of soil plasticity determination tests. Current standard methods for determination of soil plasticity have several issues that make their results unreliable in many cases. In this research, it is tried to address problems of conventional methods regarding soil plasticity determination, design a new apparatus for determination of liquid limit and plastic limit of soils, and standardise a new test method for determination of soil plasticity with more accuracy and reliability in comparison to conventional methods. Soil consistency is a qualitative phenomenon. In this regard, author?s suggestion for solving the problems related to the determination of soil plasticity is utilisation of qualitative research approach. Accordingly, the author has proposed a new test method and designed a new apparatus (Manafi Apparatus) for determination of soil consistency based on the nature of soil deformation utilising qualitative research approach, referred to as Manafi Method. In this technique, it is possible to determine the workability of soil at Atterberg limits and specify the consistency state of the soil. Ten different soils were selected carefully to cover a wide range of soils plasticity with plastic limits range from 18.64% to 30.78%, and the liquid limits range from 30.25% to 61.77%. The most differences between the results obtained by proposed method and standard methods were 2.38% and 1.94% of water content for liquid and plastic limits correspondingly. The experimental results obtained by designed apparatus confirmed the proposed method and provided more consistent results in soil plasticity determination in comparison to current standard methods (fall cone and thread rolling methods)
ORIGINAL ARTICLES Counteractive Effects of Mycotoxin Adsorbent and Aspergillus parasiticus on Broilers Performance Traits
No full textABSTRACT Aflatoxin (AF) (0.5ppm) and a commercial Mycotoxcin Adsorbent (0.5, 0.75 and 1%) were tested in an in vivo study forming 8 dietary treatments each with three replicates on a total of 336 on broiler chicks up to five weeks. Results showed that chicks receiving AF contaminated feed had suppressed body weight, which significantly improved with inclusion of Adsorbent. Supplementation of Adsorbent at 0.75 and 1% to the diets containing AF significantly (9.97 and 9.15%, respectively) improved feed consumption. Efficiency of feed utilization decreased significantly with addition of 0.5 pm AF, improved with inclusion of Adsorbent. The serum antibody titers against ND and IBD vaccination which were significantly depressed by AF, were restored with the inclusion of 1% Adsorbent. The serum concentration of total protein (38.37%) uric acid and albumin were not affected either in AF fed or Adsorbent supplemented groups. The activity of serum GGT significantly increased in AF fed group and the addition of Adsorbent did not show significant reduction in activity of serum GGT. Compared with control, activity of serum ALT was not affected either in AF, control or Adsorbent supplemented groups
Comparison Study of a Natural Non-Antibiotic Growth Promoter and a Commercial Probiotic on Growth Performance, Immune Response and Biochemical Parameters of Broiler Chicks
No full textThe objective of the present study was to investigate the effectiveness of a non-antibiotic growth promoter (Non-AGP) which is a combination of phytomolecules, direct-fed microbials (DFMs) and organic acids on performance, serum enzyme activities, immune response and visceral organ weights of commercial broiler chickens. A total of 375 day-old Ross 308 broiler chickens (mixed sex) were obtained from a local hatchery, weighed, and randomly allotted to 5 treatment groups with 5 replicates of 15 birds each. They received different treatments as basal diet (control); control plus 400 mg/kg bacitracin methylene disalicylate (BMD); control plus 0.05% Non-AGP (Non-AGP1); control plus 0.1% Non-AGP (Non-AGP2) and control plus 0.1% commercial probiotic (PRO). Chicks fed BMD resulted in maximum feed efficiency and a significant (P≤0.05) increase in the body weight, relative weights of liver, kidney and pancreas and Newcastle disease (ND), Infectious Bursal Disease (IBD) and Avian Influenza (AI) titers at d 42. Dietary inclusion of Non-AGP at the level of 0.1% into the basal diet proved its efficiency equal to BMD fed chicks, whereas addition of a probiotic at the level of 0.1% showed its applicability similar to the control group. It is concluded that the tested Non-AGP product at 0.1% but not 0.05% in the current study may be a suitable replacement for BMD in poultry diets
Toxicity of aflatoxin B1 on laying Japanese quails (Coturnix coturnix japonica)
No full textThis study was performed to evaluate the efficacy of a herbal mycotoxin binder to overcome the adverse effects of 1.5 mg/kg of aflatoxin fed to laying quails. Results showed that addition of aflatoxin altered the performance indices of quails in terms of feed intake, FCR, egg production, and egg weight. Intestinal morphology of quails was also manipulated by inclusion of aflatoxin into the diet. The immunity of quails fed aflatoxin declined significantly. However, it could increase the population of harmful bacteria collected from the ileum of quails. The results of this study established that using herbal mycotoxin binder could bypass these adverse effects significantly and can be used in laying quails as a suitable binder when mycotoxin is present in their feed
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