Abstract
ABSTRACTTwo hundred turkey breeder hens and 24 viable toms of 30-35 weeks (wk) old of small white variety were distributed into 2 treatment groups having 4 replicates First four replicates were offered diet A [National Research Council. 1994. Nutrient requirements of poultry. 8th ed. Washington, DC: National Academy Press] and other four replicates were maintained on a higher plane of nutrition – diet B for 8 wk. Five hundred and fortyeight fertile eggs on 21st embryonic day were in ovo injected with nutrients (essential amino acids - INA; linolenic acid, linoleic acid, retinol and DL-alpha-tocopherol-INFV; INA + INFV-INAFV, sham control – S and un-injected control – C). INAFV poults had significantly (P < .01) higher body weight compared to other treatment groups till 8 wk of age. Total immunoglobulins in response to 1% sheep red blood cells were significantly higher (P < .01) in the INA group compared to the C group. Cell-mediated immune response was significantly higher (P < .01) in the diet B group compared to diet A group. Thus, INAFV treatment may be carried out for better posthatch growth and breeders may be maintained on higher plane of nutrition along with INA treatment to elicit better post-hatch immunity.
Highlights
Over the past few years, a lot of changes have taken place in the modus operandi of turkey feeding, breeding and management
It has been reported that methionine supplementation in diet results in significant doserelated increases in total antibody immunoglobulin G (IgG) and responses to phytohaemagglutinin from Phaseolus vulgaris (PHA-P) (Tsiagbe et al 1987)
Percent hatchability was highest in the diet A group subjected to INFV followed by the diet B group and subjected to INA (Table 6)
Summary
Over the past few years, a lot of changes have taken place in the modus operandi of turkey feeding, breeding and management. Genetic improvements in growth have been associated with health-related problems in modern turkey. Nutrition can modulate quantitative and qualitative aspects of the immune response to pathogens. Especially in chickens, has elucidated the impact of diet on immune competence (Cook 1991; Koutsos & Klasing 2001) and the mechanisms that are responsible. Proper functioning of the immune system depends upon availability of essential nutrients, the precursors for cell growth and activity. Branched chain amino acids such as isoleucine, leucine and valine have the greatest potential to modulate immune responses among the amino acids in chickens (Konashi et al 2000). Maternal dietary regimen and in ovo nutrient administration on subgroups and weighed and were stored at 15°C for incubation the post-hatch immunocompetence traits of turkey poults
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