Effect of age of fattening and body condition of draught oxen fed teff straw (Eragrostis teff) based diets

1992 ◽  
Vol 24 (2) ◽  
pp. 103-108 ◽  
Author(s):  
P. O. Osuji ◽  
B. Capper
Keyword(s):  
Body Condition ◽  
Effect Of Age

Resumption of oestrous and ovarian cyclicity during the post-partum period in autumn-lambing ewes is not influenced by age or dietary protein content

1998 ◽  
Vol 67 (1) ◽  
pp. 65-72 ◽  
Author(s):  
L. M. Mitchell ◽  
M. E. King ◽  
F. E. Gebbie ◽  
M. J. Ranilla ◽  
J. J. Robinson
Keyword(s):  
Protein Content ◽  
Body Condition ◽  
Dietary Protein ◽  
Post Partum ◽  
Live Weight ◽  
Post Partum Period ◽  
Ovarian Cyclicity ◽  
Effect Of Age ◽  
Ovarian Cycles ◽  
Body Condition Scores

AbstractThe objective was to determine the effect of age and dietary protein content on post-partum oestrous and ovarian cyclicity in autumn-lambing ewes. Twenty-four multiparous (age 4·5 (s.e. 0·61) years) and 24 primiparous (age 1·5 years) ewes which lambed on 28 October (s.e. 0·2) and were rearing 2·0 and. 1·7 (s.e. 0·13) lambs, respectively, were equally allocated to two dietary treatments in a 2 × 2 factorial design. Diets comprised a d libitum hay supplemented with concentrate (12·5 MJ metabolizable energy per kg dry matter (DM) and either 210 or 140 g crude protein per kg DM), offered at a daily allowance of 1·2 kg per ewe from lambing to weaning (18 December) and 0·4 kg per ewe thereafter. Throughout the study (3 November to 24 May) ewes were group-housed in straw-bedded pens under natural photoperiod at 57°N and their live weights and body condition scores were assessed at 2-week intervals. A raddled vasectomized ram was continually present with each group and ewes marked by the ram were recorded thrice weekly. Blood samples were obtained thrice weekly for measurement of peripheral progesterone concentrations and ovulation rate was determined by laparoscopy during January and March. There was no significant effect of dietary protein content on any of the variables measured. For multiparous and primiparous ewes, mean live weights and body condition scores at lambing were 79·5 (s.e. 1·41) v. 58·4 (s.e. 1·54) kg (P < 0·001) and 2·5 (s.e. 0·05) v. 2·2 (s.e. 0·05) (P < 0·001) and daily live-weight losses over the suckling period were 153 (s.e. 19·3) v. 85 (s.e. 21·1) glday (P < 0·05). Intervals from parturition to first overt oestrus were 39 (s.e. 3·2) v. 33 (s.e. 2·3) days and to the onset of ovarian cyclicity were 29 (s.e. 4·9) v. 25 (s.e. 1·5) days. Durations of ovarian cyclicity were 133 (s.e. 27·1) and 110 (s.e. 5·7) days (P < 0·01) during which 7·6 (s.e. 0·32) and 6·5 (s.e. 0·34) (P < 0·05) ovarian cycles were recorded respectively. Fifteen ewes had initial short cycles (≤10 days), six had prolonged cycles (≥21 days) and 11 had extended inter-luteal phase intervals (≥8 days). All ewes had recent ovulations at the January laparoscopy but only 19 multiparous and nine primiparous ewes had ovulations in March. Mean ovulation rates were: January 2·2 (s.e. 0·14) and 1·4 (s.e. 0·13) (P < 0·001), and March 1·6 (s.e. 0·23) and 1·2 (s.e. 0·15) for multiparous and primiparous ewes, respectively. It is concluded that, for ewes lambing at their normal time of mating, (i) the strong seasonal drive for reproduction results in the resumption of oestrous and ovarian cyclicity during the early post-partum period; (ii) initial luteal phases may be of short or extended duration; (Hi) there is no effect of age or dietary protein content, within the range studied, on the onset of ovarian cyclicity; and (iv) multiparous ewes experience a greater number of ovarian cycles and achieve higher ovulation rates than primiparous ewes.

scholarly journals Effect of age, haemosporidian infection and body condition on pair composition and reproductive success in Great Tits Parus major

Ibis ◽  
2019 ◽  
Vol 162 (3) ◽  
pp. 613-626
Author(s):  
Romain Pigeault ◽  
Camille‐Sophie Cozzarolo ◽  
Olivier Glaizot ◽  
Philippe Christe
Keyword(s):  
Reproductive Success ◽  
Body Condition ◽  
Parus Major ◽  
Pair Composition ◽  
Effect Of Age

scholarly journals The Effect of Age, Stage of the Annual Production Cycle and Pregnancy-Rank on the Relationship between Liveweight and Body Condition Score in Extensively Managed Romney Ewes

Animals ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 784 ◽  
Author(s):  
Jimmy Semakula ◽  
Rene Anne Corner-Thomas ◽  
Stephen Morris ◽  
Hugh Blair ◽  
Paul Kenyon
Keyword(s):  
Linear Regression ◽  
Body Condition ◽  
Annual Cycle ◽  
Body Condition Score ◽  
Production Cycle ◽  
Pregnancy Diagnosis ◽  
Unit Change ◽  
Condition Score ◽  
The Relationship ◽  
Effect Of Age

This study determined the nature of the relationship between liveweight and body condition score (BCS) and assessed the influence of the stage of the annual cycle and pregnancy-rank on the relationship between liveweight and BCS in Romney ewes. Data were collected from the same ewes at different ages (8–18, 19–30, 31–42, 43–54, 55–66 and ≥67 months), stages of the annual cycle (pre-breeding, at pregnancy diagnosis, pre-lambing and weaning) and pregnancy-rank (non-pregnant, single or twin). Linear regression was determined as being sufficient to accurately describe the relationship between liveweight and BCS. Across all data, a one-unit change in BCS was associated with 6.2 ± 0.05 kg liveweight, however, this differed by stage of the cycle, pregnancy-rank and ewe age (p <0.05). The average liveweight per unit change in body condition score increased with the age of the ewe and was greatest at weaning and lowest pre-lambing. Among pregnancy-ranks, the average liveweight per unit change was also greater during pregnancy diagnosis than pre-lambing and was greatest among single and lowest in non-pregnant ewes. The results support the hypothesis that the relationship between liveweight and BCS is affected by the interaction between stage of the annual cycle, pregnancy-rank and ewe age.

scholarly journals Ixodid ticks of impala (Aepyceros melampus) in Swaziland: effect of age class, sex, body condition and management

1995 ◽  
Vol 30 (4) ◽  
pp. 178-186 ◽  
Author(s):  
G.J. Gallivan ◽  
J. Culverwell ◽  
R. Girdwood ◽  
G.A. Surgeoner
Keyword(s):  
Body Condition ◽  
Ixodid Ticks ◽  
Age Class ◽  
Effect Of Age ◽  
Aepyceros Melampus

scholarly journals Effect of Age, Season, Body Condition, and Endocrine Status on Serum Free Cortisol Fraction and Insulin Concentration in Horses

2016 ◽  
Vol 30 (2) ◽  
pp. 653-663 ◽  
Author(s):  
K.A. Hart ◽  
D.M. Wochele ◽  
N.A. Norton ◽  
D. McFarlane ◽  
A.A. Wooldridge ◽  
...  
Keyword(s):  
Body Condition ◽  
Insulin Concentration ◽  
Serum Free ◽  
Free Cortisol ◽  
Endocrine Status ◽  
Effect Of Age

Effect of Age in Methylphenidate-Induced Taste Avoidance and Related BDNF/Trkb in the Insular Cortex

2014 ◽  
Author(s):  
Bradley Wetzell ◽  
Mirabella M. Muller ◽  
Jennifer L. Cobuzzi ◽  
Zachary E. Hurwitz ◽  
Kathleen Decicco-Skinner ◽  
...  
Keyword(s):  
Insular Cortex ◽  
Taste Avoidance ◽  
Effect Of Age

Differential Effect of Age and Experience on Mental Abilities

1936 ◽  
Author(s):  
Herbert Sorenson
Keyword(s):  
Differential Effect ◽  
Mental Abilities ◽  
Effect Of Age

Effect of Age and Speed on Coincidence-Anticipation Timing in Soccer Pass

2003 ◽  
Author(s):  
Won-Dae Kim ◽  
Seon-Jin Kim
Keyword(s):  
Effect Of Age

Effect of age and prior knowledge on associative and item memory for brands

2012 ◽  
Author(s):  
Praggyan Mohanty ◽  
S. Ratneshwar ◽  
Moshe Naveh-Benjamin
Keyword(s):  
Prior Knowledge ◽  
Item Memory ◽  
Effect Of Age
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