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Laying characteristics of one- and twoyear old pheasants (Phasianus colchicus, L.)

100%

Krystianiak S., Kontecka H., Nowaczewski S., Rosinski A.

2007

vol. 55

issue 1-2

65-72

The aim of the study was to assess laying traits, the weight of eggs and characters of the laying rhythm of pheasants in the first and second years of reproduction. Pheasants (10 cockerels and 50 hens) were kept in aviaries. Daily, individual control of laying was performed beginning with the day of the first laying and ending with the last egg. The following parameters were evaluated: age at first laying, length of the laying period, number of laid eggs and the average weight of the egg in the 8th week of laying. The laying rhythm was also assessed and comprised: the number of egg clutches, the number of eggs in a clutch, the number of eggs in the longest clutch, the number of intervals, the length of intervals and the longest interval between clutches. During the first period of reproduction, in comparison with the second, pheasants laid slightly more eggs of similar average weight. The first laying period was longer than the second and was characterised by a greater number of egg clutches and greater number of intervals between clutches. The greatest number of eggs was laid in 10-egg and longer clutches, although the 1-egg clutches were the most numerous. A positive correlation was found between the number of eggs and the number of clutches, the greatest number of eggs in a clutch and the number of intervals between clutches. The similar values of the reproductive characters of one- and two-year old pheasants point to the possibility of longer utilization of these birds than only for one laying period. On the other hand, the considerable variability between the experimental hens with regard to the number and the length of egg clutches, as well as the intervals between them, indicate the possibility to carry out selection taking into account traits characterising the laying rhythm.

The effect of using whole wheat grain in diet of game pheasants on their body weight, dimensions and development of some internal organs

75%

Kokoszynski D., Bernacki Z., Cisowska A.

Folia Biologica

2010

vol. 58

issue 1-2

101-106

The supplementation of game pheasant diet from 5 weeks of age with 30%whole wheat grain instead of feed mixture did not significantly affect their body weight nor most body dimensions. Female and male pheasants fed a diet containing wheat grain had smaller body and trunk lengths, greater chest circumference and greater length of breastbone, and lower thigh and shank size. Female pheasants were characterized by higher indices of compactness and long-leggedness, whereas male pheasants had higher indices of massiveness, compactness and long-leggedness than pheasants fed only feed mixtures. Cock pheasants receiving the wheat diet also had a statistically shorter trunk, however, hens possessed a statistically longer lower thigh. Length of intestine (174.2 cm) and individual parts of the intestine (small intestine 119.9 cm; caeca 43 cm; rectum 11.3 cm) was greater in cocks fed whole wheat grain compared to cocks receiving only feed mixtures (156.1; 107.6; 38.8; 9.7 cm, respectively). An opposite cocks was found in hens. Supplementation of whole wheat grain in the diets significantly (P#0.05) increased liver weight and percentage in females and significantly decreased testicular weight and percentage in males. It was also found that females of both feed-treatment groups had significantly lower weights of heart, liver and spleen, and hens fed only feed mixtures were also characterized by a significantly lower weight of the proventriculus.

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2 Folia Biologica

1 2010

1 2007

1 Bernacki Z.

1 Cisowska A.

1 Kokoszynski D.

1 Kontecka H.

1 Krystianiak S.

1 Nowaczewski S.

1 Rosinski A.

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Laying characteristics of one- and twoyear old pheasants (Phasianus colchicus, L.)

The effect of using whole wheat grain in diet of game pheasants on their body weight, dimensions and development of some internal organs