ISSN:
1432-0800
Source:
Springer Online Journal Archives 1860-2000
Topics:
Energy, Environment Protection, Nuclear Power Engineering
,
Medicine
Notes:
Summary Hens and cockerels that came from fertile eggs which were subjected to spray contamination with a 10x recommendation dosage of 2,4-D, 2,4,5-T and picloram either prior to incubation or after 4 and 18 days embryonic development were evaluated for various aspects of reproduction. Capacity of the hen was assessed in terms of egg production from 41 to 53 weeks of age. During the last 8 weeks egg weight as well as shell porosity and strength, were measured. Over this same period of time sperm counts were estimated from weekly collections for the cockerels and terminated with evaluating testis gross appearance and determining their weight. Pooled semen from these same cockerels was used to artificially inseminate hens which originated from the identical earlier egg treatment. Two incubation studies were performed with the subsequent eggs. The first evaluated reproductive success as a function of parental treatments while the second involved an egg retreatment with spray contamination restricted to the pre-Incubation period. In both cases the proportion of viable germs resulting from these matings and occurrence of late embryonic mortality, as well as malformations, were monitored. Measurement of weight gain and deaths of resulting chicks 0 to 4 weeks of age finalized the experiment. All data were statistically examined to evaluate the effect due to egg spraying, embryonic age upon contamination and their interactions. In every instance neither was there any effect attributable to extent of germ development when treated nor an interaction involving the herbicides to the consequences of contamination than anyother. Significant effects due to spray treatment occurred with several parameters, however, one or more of the controls was assessed to be either in the poorer or equivalent position relative to any herbicide treatments. In general, there was no definitive evidence that 2,4-D, 2,4,5-T and picloram had any repercussion of domestic fowl reproduction through one generation and into the second.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01683494
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