The feed intake and heat production of the young black-tailed deer (Odocoileus hemionus columbianus)

1970 ◽  
Vol 48 (2) ◽  
pp. 275-282 ◽  
Author(s):  
H. C. Nordan ◽  
I. McT. Cowan ◽  
A. J. Wood
Keyword(s):  
Growth Rate ◽  
Heat Production ◽  
Feed Intake ◽  
Wild Species ◽  
Odocoileus Hemionus ◽  
Growth Behavior ◽  
Odocoileus Hemionus Columbianus

The feed intake, resting heat production, and growth rate of prepubertal black-tailed deer fawns of both sexes have been studied under captive conditions. Comparisons of these findings with those of other workers on domestic and other wild species are presented. The present results provide some explanation for the unusual growth behavior of this species when reared on a high plane of nutrition.

Isolation of a Poxvirus from a Black-tailed Deer (Odocoileus hemionus columbianus)

1996 ◽  
Vol 32 (3) ◽  
pp. 531-533 ◽  
Author(s):  
J. F. Patton ◽  
R. W. Nordhausen ◽  
L. W. Woods ◽  
N. J. MacLachlan
Keyword(s):  
Odocoileus Hemionus ◽  
Odocoileus Hemionus Columbianus

Effects of lasalocid and protein levels on feed intake and growth rate of Awassi lambs

1997 ◽  
Vol 1997 ◽  
pp. 187-187
Author(s):  
M. M. Muwalla ◽  
M. Y. Harb ◽  
T. F. Crosby
Keyword(s):  
Growth Rate ◽  
Feed Intake ◽  
Feed Efficiency ◽  
Published Data ◽  
Growth Promoter ◽  
Feed Conversion ◽  
Protein Levels ◽  
Feedlot Lambs ◽  
Lamb Growth ◽  
Awassi Lambs

Lasalocid is a polyether antibiotic derived from the fermentation of streptomyces lasaliensis used as a coccidiostat in sheep. There are varying literature reports on lamb growth rate and feed intake when lasalocid is included in the diet of feedlot lambs. While some reports have shown that lasalocid enhances feed efficiency in ruminants by decreasing feed intake and either maintaining or improving rate of gain others indicate that lasalocid did not have any effect on lamb growth rates or feed efficiency (Stobart et al., 1987). Also, when lasalocid was fed to Chios lambs, growth rate was increased but there was no improvement in feed conversion efficiency (Hadjipanayiotou et al., 1988). There are no published data in the literature relating to the use of lasalocid as a growth promoter in the Awassi breed of sheep fed complete diets and the purpose of this study was to investigate the effect of lasalocid with two levels of protein on the growth rate and feed efficiency of weaned male and female Awassi lambs.

Relationship between the gas production profiles of mixtures of hay and maize and the patterns of rumen fermentation observed in sheep fed those mixtures

1998 ◽  
Vol 1998 ◽  
pp. 63-63
Author(s):  
C. Rymer ◽  
D.I. Givens
Keyword(s):  
Growth Rate ◽  
Feed Intake ◽  
Rumen Fermentation ◽  
Gas Production ◽  
Post Feeding ◽  
Molar Proportion ◽  
Rumen Ph ◽  
The Mean

The gas production (GP) technique has been developed to assess dynamics of ruminant digestion. Relationships have been observed between a feed's GP profile and in vivo parameters such as digestibility (Khazaal et al., 1993), feed intake and growth rate (Blümmel and Ørskov, 1993), and in situ degradability (Sileshi et al., 1997). However, there are few studies which relate GP data to the in vivo pattern of rumen fermentation (in terms of the rate of pH decline 2 h post-feeding and the mean rumen pH, concentration of total VFA and molar proportion of individual VFA). The object of this experiment was to determine whether such a relationship existed between a feed's GP profile and the pattern of rumen fermentation observed in animals fed that feed.

Growth and seasonal weight changes as they relate to spring and autumn set points in mule deer

1991 ◽  
Vol 69 (3) ◽  
pp. 744-747 ◽  
Author(s):  
Lyle A. Renecker ◽  
W. M. Samuel
Keyword(s):  
Growth Rate ◽  
Weight Loss ◽  
Weight Gain ◽  
Mule Deer ◽  
Odocoileus Hemionus ◽  
Weight Changes ◽  
Annual Cycles ◽  
Body Weights ◽  
Compensatory Gain ◽  
Highly Correlated

Growth rate and potential, 25 hand-reared mule deer (Odocoileus hemionus hemionus) were examined. When possible, body weights of all animals were recorded weekly. Female deer matured faster than males, but males attained a larger body size. Regressions of winter weight loss of both sexes on peak autumn weight were highly correlated. Similarly, spring and summer compensatory gain in females could be predicted from the minimum spring weight. Annual cycles of intake and weight gain may have adaptations that improve reproductive success and winter survival.

Genetic variation in net feed efficiency in Hereford cattle and its association with other production traits

1999 ◽  
Vol 1999 ◽  
pp. 47-47
Author(s):  
R.M. Herd ◽  
S.C. Bishop
Keyword(s):  
Growth Rate ◽  
Genetic Variation ◽  
Feed Intake ◽  
Feed Efficiency ◽  
Genetic Correlations ◽  
Feed Consumption ◽  
Production Traits ◽  
Performance Measurements ◽  
Hereford Cattle ◽  
Rate Selection

Net feed efficiency refers to variation in feed consumption between animals net of requirements for maintenance and production, and may be measured as residual feed intake (RFI). Because RFI is independent of liveweight (LW) and growth rate, selection for improved net feed efficiency is likely to reduce feed intake with little change in growth. The purpose of this study was to establish whether there exists genetic variation in RFI in young British Hereford bulls, and to determine the phenotypic and genetic correlations of RFI with key production traits.The data consisted of performance measurements on 540 bull progeny of 154 British Hereford sires, collected over ten 200-day postweaning performance tests conducted between 1979 and 1988. The traits analysed were food intake (FI), 200 to 400-day daily gain (ADG), 400-day weight (W400), predicted carcass lean content (LEAN), lean growth rate (LGR), food conversion ratio (FI/ADG) and lean FCR (LFCR; FI/(ADG x LEAN), described by Bishop (1992).

Effects of different fresh-cut forages and their hays on feed intake, digestibility, heat production, and ruminal methane emission by Boer × Spanish goats1

2012 ◽  
Vol 90 (8) ◽  
pp. 2754-2762 ◽  
Author(s):  
R. Puchala ◽  
G. Animut ◽  
A. K. Patra ◽  
G. D. Detweiler ◽  
J. E. Wells ◽  
...  
Keyword(s):  
Heat Production ◽  
Methane Emission ◽  
Feed Intake ◽  
Fresh Cut

Black-tailed deer feeding bouts: dynamic events

1989 ◽  
Vol 67 (6) ◽  
pp. 1353-1362 ◽  
Author(s):  
Michael P. Gillingham ◽  
Fred L. Bunnell
Keyword(s):  
Food Preference ◽  
Odocoileus Hemionus ◽  
Diet Selection ◽  
Odocoileus Hemionus Columbianus ◽  
Food Items ◽  
Dynamic Events ◽  
Feeding Station ◽  
Ad Libitum ◽  
Preferred Foods ◽  
First Time

Foraging bouts of captive black-tailed deer (Odocoileus hemionus columbianus Richardson) were investigated to examine how searching for food affects diet selection. We determined food preference for three types of food under ad libitum conditions and then studied the foraging of two deer in a 0.5-ha, vegetation-free pen in which we controlled food availability and distribution of the same three types of food. Our hypotheses included the following: (i) clumping of preferred food into patches would enable animals to better exploit food distributions; (ii) the switch from preferred to lower-ranked food would be gradual as preferred food was less frequently encountered; and (iii) deer would respond to a lower abundance of preferred foods by eating more of lower-ranked food items at each feeding location. Searching for food alone did not alter diet selection from ad libitum conditions. Deer nearly exhausted their highly preferred food item before switching to lower-ranked ones. Amount of preferred food already eaten during a trial was positively correlated with the time that animals continued searching before switching to lower-ranked food items. Switching was related to amount and type of food encountered and not to amount of food in the pen. Clumping of the preferred food had no significant effect on the amount of food eaten, but did significantly influence types of food encountered by one deer. When preferred food was abundant, it was not always completely eaten the first time a feeding platform was visited. Increases in the intake rates of nonpreferred food items resulted from deer visiting more feeding stations containing nonpreferred food items and not from deer eating more food at each feeding station.

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