Results 61 to 70 of about 100,197 (349)
Poultry Science, 1935 Abstract KENTUCKY marls or calcareous clays are usually soft, calcareous-magnesian shales or soft, clay-containing magnesian limestone which breaks down on weathering into finely divided particles. In recent years marl has been used extensively because of its cheapness and easy accessibility, as a source of lime for soils.
G. Davis Buckner +2 more
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Development of prevention and treatment strategies for parasites in poultry [PDF]
, 2007 Parasitic infections are likely to be more important in organic and other free-range hens than in birds kept indoors. Several workpackages of QLIF aim at improving prevention and therapy of helminth (Ascaridia galli and Heterakis gallinarum) and ...
Amsler, Zivile +3 more
core
Salmonella and campylobacter in organic egg production - with special reference to the Finnish situation [PDF]
, 2005 In Finland, an ongoing (2003-2005) research project on organic egg production, animal welfare and food safety is examining campylobacter and salmonella contamination of approximately 20 organic layer farms.
Hänninen, M. L.
core
Effect of body weight of laying hens on production traits of broiler parents [PDF]
Biotechnology in Animal Husbandry, 2017 Certain investigations have been conducted in two broiler breeder flocks of Ross 308 and Cobb 500 hybrids. At the beginning of the production cycle (24 weeks of age), an average laying hens' body weight of 2680.40 g was found in the case of Ross 308 ...
Đermanović Vladan +2 more
doaj
Italian Journal of Animal Science, 2020 This study was conducted to determine the effects of diet supplementation of laying hens with Ligustrum lucidum (LL) on egg production, egg quality and caecal microbiota. A total of 360 72-week-old Hy-Line Brown laying hens were divided into three groups
Xiaochen Chen +3 more
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Shennong 1 Chicken 40K Liquid Chip: Advancing Genetic Research in Chinese Indigenous Chickens
Animal Research and One Health, EarlyView.Based on comprehensive genomic data of Chinese indigenous chickens, we developed a specialized genotyping array for this population. Comparative analyses with published mainstream arrays and evaluations, including genetic assessment of diverse chicken types and gene mining analyses, demonstrated its superior applicability to Chinese indigenous chickens.
Chaoqun Gao +14 more
wiley +1 more source
AgricultureThis study aimed to verify the potential of calcium lactate for the performance, blood index, shinbone quality, jejunal immunity, and egg quality of aged laying hens.
Kai Qiu +4 more
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Journal of the Indonesian Tropical Animal Agriculture, 2017 The objective of this study was to obtain enriched eggs with low cholesterol content. Forty-eight laying hens (strain Dekalb Warren) aged 72 weeks were distributed into six treatment groups as follows: 1) Laying hens fed diet without Sauropus androgynus ...
U. Santoso, Y. Fenita, E. Sulistyowati
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Morphological particulars of the liver of laying hens of cross “Lohmann Brown” under hepatosis
Науковий вісник Львівського національного університету ветеринарної медицини та біотехнологій імені С.З. Ґжицького: Серія Ветеринарні науки, 2020 The article presents the results of histological examinations of the liver of laying hens at age 166, 300 and 530 days, in which according to the results of biochemical analysis of blood serum revealed a subclinical course of hepatosis.
V. Y. Yaremchuk +2 more
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Magnesium Requirement of the Laying Hen ,
Poultry Science, 1968 Abstract THE quantitative requirement for magnesium by laying hens has not been established. The National Research Council in 1966 listed the growing chicken's requirement as 500 mg. magnesium per kilogram of feed, but gave no estimate of the hen's requirement while Edwards et al. (1961) showed that the phosphorus level of the hen's diet had a marked
Denis Nugara, Hardy M. Edwards
openaire +3 more sources