Comparing growth and condition in post release juvenile common pheasants on different diets (original) (raw)
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Early Nutrition Causes Persistent Effects on Pheasant Morphology
Physiological and Biochemical Zoology, 2001
Differences in growth conditions during early ontogeny have been suggested to cause permanent effects on the morphology and quality of birds. Yearly variation in growth conditions could thus result in morphological and quality differences between cohorts. In this study, we investigated the effect of small differences in the dietary protein content of captive ring-necked pheasants (Phasianus colchicus) during their first 8 wk posthatching. An experimental increase of the proportion of dietary protein during the first 3 wk of life accelerated growth, whereas a similar manipulation during the following 5 wk had only a limited effect. Compensatory growth during the postexperimental period equalized the size of chicks from different experimental treatments. However, a difference in tarsus length resulting from experimental treatment during the first 3 wk remained into adulthood. Furthermore, the protein content of the diet during the first 3 wk had an effect on the degree of fluctuating asymmetry in tarsus length, suggesting persistent effects on the quality of birds. The results of this study may explain size differences between cohorts that exist in pheasants and may also provide a link between the use of pesticides in agriculture and population effects on pheasants.
Captive rearing technologies and survival of pheasants (Phasianus colchicus L.) after release
Italian Journal of Animal Science, 2012
Studies have repeatedly emphasized the limited survival of pheasants reared using traditional methods compared to the wild one. For this reason we performed a field trial to compare survival rates, home ranges and habitat uses of pheasants artificial hatched and reared (traditional method) with pheasants artificial hatched and reared by fostering mothers (hens). A total of 117 artificially hatched pheasants, 57 artificially brooded after hatch and 60 brooded by fostering hens, were equipped with a radio necklace tag or a poncho tag. Both groups were localized two-three times a week after their release in the wild. The survival rates of the brooded-byhen pheasants showed an improvement of survival rates, either poncho or radio tagged (P<0.05), 90.0% vs 57.1% and 35.0% vs 21.1%, respectively. The average maximum dispersion was 390 and 426 m and the home range were 12.0 and 11.6 ha in artificially brooded and brooded-by-hen pheasants, respectively. The land use showed that the woods were less represented than the available in the home range of every pheasant. For this reason the woods can be reduced in the agricultural areas interspersed with natural Mediterranean vegetation. Figure 2. Land uses in the pheasant (bars with SEM). Least square means >1 show larger uses; Least square means <1 show smaller uses.
Folia Biologica, 2012
Body weight and some biometrical traits of ring-necked pheasants (Phasianus colchicus) at different ages. Folia biologica (Kraków) 60: 79-84. Although the growth of pheasants is an important issue, there are few publications providing information on body weight and morphometrics of pheasants at different ages. The aim of this study was to investigate body weight, tarsus length, wing length and wingspan in farmed pheasants aged 3-16 weeks. The study was carried out on 50 pheasants (31 females and 19 males). All one-day old birds were marked and kept until the 16 JD week of life. In the 3 H@ , 8 JD , 12 JD and 16 JD weeks of life all pheasants were weighted and tarsus length, wing length and wingspan were measured. Male chicks appeared to be significantly heavier than females (P#0.01) already in the third week of life. Also their wings were longer and their wingspan attained higher values (P#0.05). Absolute gains of the majority of traits also differed between sexes (being larger in males) in all studied periods. Values of body weight, tarsus length and wingspan noted in the third week of life were significantly correlated with all later measurements. Thus body weight and some biometrical traits of pheasant chicks measured already at the 3 H@ week of life could be applied as predictors of future body weight and size.
Ciência e Técnica Vitivinícola
The aim of this research was to evaluate the growth rate of body weight and wing length of green and ring-necked pheasants reared up to 14th week of life and fed with allmash mixture. In every successive week of life the birds were weighed and their wing length was measured. It was found that the body weight of green and ring-necked pheasants of both sexes was increasing with bird age. In all successive weeks, except of the 3rd week of rearing, sexual dimorphism of body weight was observed, that was significant (P≤0.05). Males have body weight greater than females. Like body weight, wing length of pheasants was increasing with age and sexual dimorphism of wing length was also observed. Males have wing length more than females. The highest growth rate of body weight was observed up to 9th week of life.
Journal of Central European Agriculture, 2009
The mean body weight of pheasant cocks (1226 g) and hens (946.9 g) receiving feed mixtures was lower than that of birds fed diets with wheat (♂ 1421.4 g, ♀ 953.2 g). The dressing percentage of both sexes pheasants fed wheat grain also (69.9%) was only 0.3% lower than in birds receiving feed mixtures only (70.2%). The carcasses of birds (♂♀) fed the diet with whole wheat grain contained more breast muscles (251.2 g), leg muscles (198.8 g) and other carcass components. The carcass percentage of breast muscles, leg muscles, wings and skin with fat was lower, and that of remainders of carcass higher in pheasants receiving wheat grain. In addition, the carcasses of pheasants (♂♀) fed the wheat diets were characterized by a higher weight of meat and fat and lower carcass meat and fat percentage.
2017
A study was conducted to know the relation between temperature, growth and feed consumption rate in Korean Ring-Necked Pheasants. Three cages of same size (7.25 x 4.15 m ‘’30 m area, per bird space 10 m), were selected for a pair of pheasants in each cage. Six chicks of 15 days old were selected (3 males and 3 females) for three cages i.e. C1, C2 and C3 having 1 male chick and 1 female chick in each cage. It was observed that feed consumption rate was also decreased, decline in feed consumption rate 6.62, 8.23 and 8.74 respectively of three groups 1, 2 and 3. Maximum feed conversion rate was recorded during 1 week of study and minimum during last week of study in all groups. In the present study week wise feed conversion ratio (FCR) was statistically significantly different (p<0.01) whereas no difference (p>0.01) was observed among the three groups.